Contents

Notes on Using this Manual

and on the CE Symbol 1
Centralized and Distributed
Configuration of a Programma-
ble Controller 2
SIMATIC
Installation Guidelines 3
Central Controllers and
S5-135U/155U Expansion Units
4
Power Supply Units
CPUs, Memory Cards,
Memory Submodules,
Interface Submodules 5
System Manual
Multiprocessor Operation/
Coordinators 6
This manual has the
order number:
Interface Modules 7

6ES5998-0SH21 Digital Input/Output Modules 8

Analog Input/Output Modules 9

Monitoring Module 10

Connector Assignments 11

Appendices

Appendix A
Guidelines for Handling
Electrostatically-Sensitive
Devices (ESD) B
Index

12/98
C79000-G8576-C199
Release 06
 Safety Guidelines #$. ()0' *)/$). )*/$ . 2#$# 4*0 .#*0' *. -1 /* ).0- 4*0- *2) + -.*)' .! /4 . 2 '' . /*
+-*/ / /# +-*0/ ) *)) /  ,0$+( )/ # . )*/$ . - #$"#'$"#/  $) /# ()0' 4  2-)$)"
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Trademarks  R )   R )  R - - "$./ -  /- (-&. *!     
#$- +-/$ . 0.$)" !*- /# $- *2) +0-+*. . )4 */# - )( . $) /#$. *0( )/ 2#$# - ! - /* /- (-&. ($"#/
$)!-$)" 0+*) /# -$"#/. *! /# /- (-& *2) -.

Copyright E Siemens AG 1993 All rights reserved Disclaimer of Liability

The reproduction, transmission or use of this document or its We have checked the contents of this manual for agreement with the
contents is not permitted without express written authority. hardware and software described. Since deviations cannot be
Offenders will be liable for damages. All rights, including rights precluded entirely, we cannot guarantee full agreement. However,
created by patent grant or registration of a utility model or design, are the data in this manual are reviewed regularly and any necessary
reserved. corrections included in subsequent editions. Suggestions for
improvement are welcomed.
$ ( ). 
Bereich Automatisierungs- und Antriebstechnik E Siemens AG 1993
Geaschaeftsgebiet Industrie Automatisierungssysteme 0% / /* #)" 2$/#*0/ +-$*- )*/$ 
Postfach 4848, D-90327 Nuernberg

Siemens Aktiengesellschaft 6ES5998-0SH21

C7-633, C7-634 Control Systems

Contents

1 Notes on Using this Manual and on the CE Symbol . . . . . . . . . . . . . . . . . . . . . . . 1-1

Notes on Using this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Notes on the CE Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Notes for Machine Manufacturers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
2 Centralized and Distributed Configuration of a Programmable Controller . . . 2-1
2.1 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 Centralized and Distributed Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.1 Installing a PLC with Centralized Configuration . . . . . . . . . . . . . . . . . . . . . . 2-4
2.2.2 Installing a PLC with Distributed Configuration . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.3 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
3 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Principles of Installation of Systems for EMC . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.1 Overview of Possible Types of Interference . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.1.2 The Most Important Basic Rules for Ensuring EMC . . . . . . . . . . . . . . . . . . 3-6
3.2 Installation of Programmable Controllers for EMC . . . . . . . . . . . . . . . . . . . . 3-8
3.2.1 Basic Rules for Assembling and Grounding the Inactive Metal
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.2.2 Example of Cabinet Assembly for EMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.2.3 Example of Rack and Wall Mounting for EMC . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.3 Wiring of Programmable Controllers for EMC . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.3.1 Routing of Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.3.2 Equipotential Bonding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.3.3 Shielding of Cables and Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.3.4 Special Measures for Interference-Free Operation . . . . . . . . . . . . . . . . . . . 3-17
3.3.5 Checklist for the Electromagnetically Compatible Installation
of Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.4 Power Supplies for Programmable Controllers and I/Os . . . . . . . . . . . . . . 3-20
3.4.1 Power Supplies for Control Systems with SIMATIC S5 . . . . . . . . . . . . . . . 3-20
3.4.2 Connecting the Programmable Controller and Load Power . . . . . . . . . . . . 3-21
3.4.3 Connecting Non-Floating or Floating Modules . . . . . . . . . . . . . . . . . . . . . . . 3-26
3.5 Interference-Free Installation of Centralized and Distributed
Interface Circuits ................................................ 3-28
3.5.1 Interference-Free Installation of Centralized Interface Circuits . . . . . . . . . 3-28
3.5.2 Interference-Free Installation of Distributed Interface Circuits . . . . . . . . . . 3-28
3.6 Interference-Free Connection of Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

System Manual
C79000-G8576-C199-06 iii
Contents

3.6.1 Interference-Free Connection of a Monitor to the CP of the S5

Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
3.6.2 Shielding and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
3.7 Selection and Installation of Cabinets with SIMATIC S5 . . . . . . . . . . . . . . . 3-33
3.7.1 Types of Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
3.7.2 Clearances in Cabinets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
3.7.3 Removal of Power Dissipation from Cabinets . . . . . . . . . . . . . . . . . . . . . . . . 3-37
3.7.4 Examples for Determining the Type of Cabinet . . . . . . . . . . . . . . . . . . . . . . 3-38
3.7.5 Determining the Power Dissipation of Modules . . . . . . . . . . . . . . . . . . . . . . 3-39
4 Central Controllers and Expansion Units Power Supply Units . . . . . . . . . . . . . 4-1
4.1 S5-135U/155U Central Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.1.3 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.1.4 Repair Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.1.5 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.2 Expansion Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.2.1 Technical Description of the Expansion Units . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4.2.2 Installing the Expansion Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
4.2.3 Technical Specifications of the Expansion Units . . . . . . . . . . . . . . . . . . . . . 4-18
4.3 Power Supply Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4.3.1 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
4.3.2 Setting and Connecting the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . 4-23
4.3.3 Fault Indications/Fault Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
4.3.4 Maintenance and Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-40
4.3.5 Description of Internal Sequences in the Power Supply Unit . . . . . . . . . . . 4-49
4.3.6 Technical Specifications of the Power Supply Units . . . . . . . . . . . . . . . . . . 4-51
4.4 6ES5 955-3NA12 Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57
4.4.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57
4.4.2 Setting the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-60
4.4.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
4.4.4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
4.4.5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66
4.4.6 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68
4.5 Fan Submodules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
4.5.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
4.5.2 Setting and Connecting the Fan Submodule . . . . . . . . . . . . . . . . . . . . . . . . 4-72
4.5.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-74
5 CPUs, Memory Cards, Memory Submodules, Interface Submodules . . . . . . . . 5-1
5.1 CPU 948B -3UA13 or CPU 948B -3UA23 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.3 Interfaces of the CPU 948 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5.1.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.2 CPU 948 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.2.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.2.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

System Manual
iv C79000-G8576-C199-06
 Contents

5.2.3 Interfaces of the CPU 948 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

5.2.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
5.3 CPU 928B -3UB21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.3.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.3.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
5.3.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
5.4 CPU 928B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
5.4.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
5.4.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
5.4.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52
5.5 CPU 928 -3UA21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54
5.5.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54
5.5.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-56
5.5.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-61
5.6 CPU 928 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62
5.6.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62
5.6.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64
5.6.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-70
5.7 CPU 922 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-71
5.7.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-71
5.7.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-73
5.7.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-79
5.8 374 Flash EPROM Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-80
5.8.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-80
5.8.2 Notes on Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-80
5.8.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-81
5.9 376 Memory Submodules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-82
5.9.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-82
5.9.2 Notes on Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-82
5.9.3 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83
5.10 377 Memory Submodules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
5.10.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
5.10.2 Notes on Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
5.10.3 RAM Submodules with Battery Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85
5.10.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-90
5.11 Interface Submodules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-92
5.11.1 Installing and Removing the Interface Submodules . . . . . . . . . . . . . . . . . . . 5-93
5.11.2 PG Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-95
5.11.3 V.24 Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-99
5.11.4 TTY Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-106
5.11.5 RS422 A/485 Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-112
5.11.6 SINEC L1 Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-118
5.11.7 Technical Specifications of the Interface Submodules . . . . . . . . . . . . . . . . 5-122

System Manual
C79000-G8576-C199-06 v
Contents

6 Multiprocessor Operation/Coordinators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2 Starting the Multiprocessor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.3 Coordinator Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6.4 923A Coordinator Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.4.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.4.2 Settings on the Coordinator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
6.5 923C Coordinator Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
6.5.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
6.5.2 Settings on the Coordinator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
6.6 Technical Specifications of the Coordinators . . . . . . . . . . . . . . . . . . . . . . . . 6-28
7 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 The 300 and 312 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7.1.1 Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
7.1.2 Modes/Jumper Assignments of the IM 300 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7.2 The 301 and 310 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.2.1 Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
7.2.2 Modes/Jumper Assignments of the IM 301 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.3 The 304 and 314 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
7.3.1 Indicators and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
7.3.2 Modes/Jumper Assignments of the IM 304 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
7.3.3 Modes/Jumper Assignments of the IM 314 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
7.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.4.1 6ES5 721 Connecting Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.4.2 6ES5 7602 Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
8 Digital Input/Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.1.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.1.2 Function of the Enable Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.1.3 Special Features of the 432 Digital Input Module . . . . . . . . . . . . . . . . . . . . . 8-8
8.1.4 Special Features of the DI/DQ 482 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
8.2 Installation and Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8.2.1 Setting the Module Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8.2.2 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
8.2.3 Marking of Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
8.2.4 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
8.2.5 Connection of Outputs in Parallel and Switching On
the Load via a Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
8.2.6 Short-Circuit Protection and Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
8.2.7 Arc-Quenching for Inductive Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25
8.3 Common Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28
8.4 Specification Sheets for the Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
8.4.1 6ES5 420-4UA13/4UA14 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . 8-30
8.4.2 6ES5 430-4UA13/4UA14 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . 8-32

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8.4.3 6ES5 431-4UA12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-34

8.4.4 6ES5 432-4UA12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-36
8.4.5 6ES5 434-4UA12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-39
8.4.6 6ES5 435-4UA12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-42
8.4.7 6ES5 436-4UA12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44
8.4.8 6ES5 436-4UB12 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-46
8.4.9 6ES5 441-4UA13/4UA14 Digital Output Module . . . . . . . . . . . . . . . . . . . . . 8-48
8.4.10 6ES5 451-4UA13/4UA14 Digital Output Module . . . . . . . . . . . . . . . . . . . . . 8-50
8.4.11 6ES5 453-4UA12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-52
8.4.12 6ES5 454-4UA13/4UA14 Digital Output Module . . . . . . . . . . . . . . . . . . . . . 8-54
8.4.13 6ES5 455-4UA12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-56
8.4.14 6ES5 456-4UA12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-58
8.4.15 6ES5 456-4UB12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-60
8.4.16 6ES5 457-4UA12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-62
8.4.17 6ES5 458-4UA12 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-64
8.4.18 6ES5 458-4UC11 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-67
8.4.19 6ES5 482-4UA11 Digital Input/Output Module . . . . . . . . . . . . . . . . . . . . . . . 8-69
9 Analog Input/Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.1 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
9.2 Common Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
9.3 The 460 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9.3.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9.3.2 Function of the Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9.3.3 Special Features of the 460 Analog Input Module . . . . . . . . . . . . . . . . . . . . 9-8
9.3.4 Setting the Module Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
9.3.5 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
9.3.6 Marking of Modules and Front Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
9.3.7 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16
9.3.8 Connection of Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17
9.3.9 Connecting a Compensating Box for Thermal E.M.F. Measurement . . . . 9-19
9.3.10 Connecting Resistance Thermometers in the Standard Pt 100 Range . . 9-20
9.3.11 Connecting Resistance Thermometers in the Extended Pt 100 Range . . 9-21
9.3.12 Broken Wire Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
9.3.13 Connecting Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23
9.3.14 Measured-Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24
9.3.15 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
9.4 The 463 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.4.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.4.2 Function of the Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.4.3 Special Features of the 463 Analog Input Module . . . . . . . . . . . . . . . . . . . . 9-39
9.4.4 Setting the Module Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39
9.4.5 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-42
9.4.6 Marking of Modules and Front Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 9-44
9.4.7 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-45
9.4.8 Measured-Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-46
9.4.9 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-47
9.5 The 465 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-50
9.5.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-50
9.5.2 Function of the Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-50

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9.5.3 Special Features of the 465 Analog Input Module . . . . . . . . . . . . . . . . . . . . 9-54

9.5.4 Setting the Module Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-56
9.5.5 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59
9.5.6 Marking of Modules and Front Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
9.5.7 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-62
9.5.8 Connecting a Compensating Box for Thermal E.M.F. Measurement . . . . 9-63
9.5.9 Connecting Resistance Thermometers to the 465 Analog Input Module . 9-64
9.5.10 Broken Wire Signal for Resistance Thermometers . . . . . . . . . . . . . . . . . . . 9-66
9.5.11 Connecting Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-67
9.5.12 Measured-Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-68
9.5.13 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-72
9.6 The 466 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-77
9.6.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-77
9.6.2 Special Features of the 466 Analog Input Module . . . . . . . . . . . . . . . . . . . . 9-77
9.6.3 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-77
9.6.4 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-84
9.6.5 Marking of Modules and Front Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 9-86
9.6.6 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-87
9.6.7 Connecting Sensors to the 466 Analog Input Module . . . . . . . . . . . . . . . . . 9-88
9.6.8 Measured-Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-91
9.6.9 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-95
9.7 The 470 Analog Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98
9.7.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98
9.7.2 Function of the Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-98
9.7.3 Special Features of the 470 Analog Output Module . . . . . . . . . . . . . . . . . . 9-102
9.7.4 Setting the Module Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-102
9.7.5 Removing and Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-105
9.7.6 Marking of Modules and Front Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 9-107
9.7.7 Connecting the Signal Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-108
9.7.8 Connecting Loads to the 470 Analog Output Module . . . . . . . . . . . . . . . . . 9-109
9.7.9 Measured-Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-111
9.7.10 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-112
10 Monitoring Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.1 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10.1.1 Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10.1.2 Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
10.1.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
10.1.4 Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
10.1.5 Resetting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
10.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10.2.1 Possible Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10.2.2 Removing and Inserting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
10.2.3 Connecting the RESET Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7
10.2.4 Switch Positions of the Relay Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7
10.2.5 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7
10.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
10.3.1 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10
10.3.2 Setting the Address Switches S1, S2, S3, S4 . . . . . . . . . . . . . . . . . . . . . . . 10-12
10.3.3 Setting the Switch S5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13

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 Contents

10.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14

10.5 Address Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-16
11 Connector Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
A Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
B Guidelines for Handling Electrostatically Sensitive Devices (ESD) . . . . . . . . . B-1
B.1 What is ESD? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
B.2 Electrostatic Charging of Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
B.3 General Protective Measures Against Electrostatic Discharge Damage . B-4
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

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System Manual
x C79000-G8576-C199-06
Notes on Using this Manual
and on the CE Symbol 1
Notes on Using this Manual

The S5-135U/155U PLC is a member of the family of SIMATIC S5

programmable (logic) controllers. The controller can be used in single and in
multiprocessor operation with up to four CPUs. In multiprocessor operation,
each CPU processes its individual user program independently of the other
CPUs (multicomputing).

CPUs Available The following are available as CPUs:

CPU 948 for fast word and binary signal processing especially
fast double-word and floating point processing and for
large programs with a high storage requirement;
programming in STEP 5.
When you use a CPU 948 you have an S5-155U PLC.
CPU 928B for fast word and binary signal processing and for
communication; programming in STEP 5.
CPU 928 for fast binary signal processing and for word
processing; programming in STEP 5.
CPU 922 for word processing (computing controlling
(R processor) monitoring signaling); programming in STEP 5.

Slots You can combine the CPUs arbitrarily at the CPU slots in the central
controller:

CPU Slot Requirement

CPU 948/CPU 928B/CPU 928 2 slots
CPU 922/CPU 928-3UA21/ 1 slot
CPU 928B-3UB21
CPU 948B-3UA13/ -3UA23

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C79000-G8576-C199-06 1-1
Notes on Using this Manual and on the CE Symbol

How the Manual is Given as a guide in the following are pointers on how this manual is
Organized organized; they will assist you when using your S5-135U/155U
programmable controller.
At the start of this manual you will find the “Safety-Related Guidelines”
and the “ESD Guidelines.” You must observe these to the letter and
follow them during the entire time you are working with the
S5-135U/155U PLC. If your PLC requires repair, you must observe the
Repair Guidelines in Section 4.1.4.
Chapter 3 contains the Installation Guidelines with information on
interference-free installation of the S5-135U/155U PLC.
Which of the remaining chapters of this manual you may require when
working with your PLC will depend on the extent of your automation task
and on the configuration of your PLC.
For a basic configuration in single-processor operation without expansion
units, you will need the following chapters:
Chapter 4 describes the central controller (CC) in Section 4.1. Described
are the technical features, installation, startup and maintenance of the CC.
Section 4.3 describes the power supply units. You will find a separate
description of the 6ES5 955-3NA12 power supply unit in Section 4.5.
Both sections describe the installation and startup as well as the necessary
maintenance on the power supply units. The 24 V/4 A load power supply
is described in Section 4.4.
Chapter 5 contains the instructions for the individual CPUs. Described
here are the technical features, installation and startup of the individual
CPUs. The various methods of operating the CPUs are also described, as
are the CPU statuses where they can be directly indicated by the LEDs on
the module. If you use memory submodules or memory cards (CPU 948),
you can look up the necessary information in Sections 5.7 to 5.9.
Chapter 8 and Chapter 9 describe the digital and analog I/O modules.
Described here are the installation, wiring and operation of these
modules. Individual I/O modules exhibit specific features which are
discussed in separate chapters.
To configure your PLC with expansion units (EUs) you will need the
following chapters:
Chapter 2 shows how you can configure a PLC with expansion units in a
centralized or distributed arrangement.
Described in Chapter 4, Section 4.2, are the EU 183U, EU 184U, EU
185U and EU 187U. Those EUs which operate with their own power
supply unit are described in Section 4.3.
Chapter 7 describes the interface modules (IMs) which serve for data
communication between central controllers and expansion units.

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 Notes on Using this Manual and on the CE Symbol

To operate two or more CPUs in multiprocessor mode in your PLC, you will
need Chapter 6.
Chapter 6 describes multiprocessor operation. This chapter contains all
the measures you must take for startup of the PLC in multiprocessor
operation. Described in Sections 6.5 and 6.6 are the 923C and 923A
coordinators.
In Chapter 11 are the connector assignments of the individual modules and
subracks.
The Appendix contains the ordering data for the products described in this
manual, references to further reading and the index of keywords in this
manual.

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Notes on Using this Manual and on the CE Symbol

Notes on the CE Symbol

EC Directive on The following applies to the SIMATIC products described in this manual:
EMC 89/336/EEC
Products which carry the CE symbol fulfil the requirements for the EC
Directive 89/336/EEC on “electromagnetic compatibility.”
The EC declarations of conformity and the documentation relating to this are
available to the authorities concerned, according to the above EC Directive,
Article 10 (2), from:
Siemens Aktiengesellschaft
Automation Group
A&D AS E48
Postfach 1963
D-92209 Amberg
Products which do not carry the CE symbol meet the requirements and
standards given in this manual under the respective “Technical
Specifications” sections.

Fields of For SIMATIC S5, the following fields of application apply according to this
Application CE symbol:

Field of Application Requirement for

Emitted Interference Noise Immunity
Industry EN 50081-2: 1993 EN 50082-2: 1995

Observing the The installation guidelines and safety-related guidelines given in this manual
Installation must be observed during startup and when operating SIMATIC S5 devices.
Guidelines Moreover, the following rules must be observed when using certain modules.

Installing the Programmable controllers of the type SIMATIC S5-135U/S5-155U must be

Devices installed in metal cabinets according to these installation guidelines.

Working on To protect the modules from static discharge, the user must discharge his
Cabinets body’s electrostatic charge before opening a cabinet.

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 Notes on Using this Manual and on the CE Symbol

Notes on Additional measures are required when using the following modules.
Individual Modules

A shielded signal cable is required for the following modules:

Order Number Module
6ES5 432-4UA12 Digital input module 432
6ES5 453-4UA12 Digital output module 453-4
6ES5 457-4UA12 Digital output module 457-4
6ES5 482-4UA12 Digital I/O module 482-4 for IP 257
A filter (SIFI C B841213-C-B30 or equivalent) is required in the 230 V AC load voltage supply
for the following modules:
Order Number Module
6ES5 436-4UA12 Digital input module 436-4
6ES5 436-4UB12 Digital input module 436-4
6ES5 456-4UA12 Digital output module 456-4
6ES5 456-4UB12 Digital output module 456-4
A filter (SIFI C, B841213-C-B30 or equivalent) is required in the 24 V DC load voltage supply
for the following modules:
Order Number Module
6ES5 261-4UA11 Proportioning module IP 261
6ES5 432-4UA12 Digital input module 432
6ES5 453-4UA12 Digital output module 453-4
6ES5 457-4UA12 Digital output module 457-4
6ES5 465-4UA12 Analog input module 465-4
6ES5 470-4UB12 Analog output module 470-4

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Notes on Using this Manual and on the CE Symbol

Notes for Machine Manufacturers

Introduction The SIMATIC programmable controller is not a machine in the sense of the
EC Directive on machines. Therefore, there is no declaration of conformity
for SIMATIC as regards the EC Directive 89/392/EEC on machines.

EC Directive The EC Directive 89/392/EEC on machines controls machine requirements.

89/392/EEC on Here, a machine is understood to be the entire sum of devices or parts
Machines involved (see also EN 292-1, paragraph 3.1).
SIMATIC is part of the electrical equipment for a machine and must
therefore be included in the procedure for checking conformity by the
machine manufacturer.

Electrical The EN 60204-1 standard (machine safety, general requirements for the
Equipment for electrical equipment for machines) applies to the electrical equipment for
Machines to EN machines.
60204
The following table should help you with the declaration of conformity and
shows which criteria apply to EN 60204-1 (as at June 1993) for SIMATIC.

EN 60204-1 Subject/Criterion Remarks

Para. 4 General requirements Requirements are fulfilled if the machines are
assembled/installed according to the
installation guidelines.
See also the explanations on the previous
pages.
Para. 11.2 Digital I/O interfaces Requirements are fulfilled.
Para. 12.3 Programmable equipment Requirements are fulfilled if the machines are
installed in lockable cabinets to protect them
from memory modifications by unauthorized
persons.
Para. 20.4 Voltage tests Requirements are fulfilled.

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Safety Notes

Risks Involved in the Use of So-Called SIMATIC-Compatible Modules of

Non-Siemens Manufacture
“The manufacturer of a product (SIMATIC in this case) is under the general
obligation to give warning of possible risks attached to his product. This
obligation has been extended in recent court rulings to include parts supplied
by other vendors. Accordingly, the manufacturer is obliged to observe and
recognize such hazards as may arise when a product is combined with
products of other manufacture.
For this reason, we feel obliged to warn our customers who use SIMATIC
products not to install so-called SIMATIC-compatible modules of other
manufacture in the form of replacement or add-on modules in SIMATIC
systems.
Our products undergo a strict quality assurance procedure. We have no
knowledge as to whether outside manufacturers of so-called
SIMATIC-compatible modules have any quality assurance at all or one that is
nearly equivalent to ours. These so-called SIMATIC-compatible modules are
not marketed in agreement with Siemens; we have never recommended the
use of so-called SIMATIC-compatible modules of other manufacture. The
advertising of these other manufacturers for so-called SIMATIC-compatible
modules wrongly creates the impression that the subject advertised in
periodicals, catalogs, or at exhibitions had been agreed with us. Where
so-called SIMATIC-compatible modules of non-Siemens manufacture are
combined with our SIMATIC automation systems, we have a case of our
product being used contrary to recommendations. Because of the variety of
applications of our SIMATIC automation systems and the large number of
these products marketed worldwide, we cannot give a concrete description
specifically analyzing the hazards created by these so-called
SIMATIC-compatible modules. It is beyond the manufacturer’s capabilities
to have all these so-called SIMATIC-compatible modules checked for their
effect on our SIMATIC products. If the use of so-called SIMATIC-compatible
modules leads to defects in a SIMATIC automation system, no warranty for
such systems will be given by Siemens.
In the event of product liability damages due to the use of so-called
SIMATIC-compatible modules, Siemens are not liable since we took timely
action in warning users of the potential hazards involved in so-called
SIMATIC-compatible modules.”

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 2
Centralized and Distributed Configuration
of a Programmable Controller
This chapter contains an overview of the methods of configuring an
S5-135U/155U PLC. You will find a description of the types of
communication between a central controller and the expansion units, and an
overview of the interface modules required for the different types of
communication.

Chapter Section Contents Page

Overview 2.1 Application 2-2
2.2 Centralized and Distributed Configuration 2-3
2.3 Examples 2-6

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Centralized and Distributed Configuration of a Programmable Controller

2.1 Application

The S5-135U/155U programmable controllers comprise a central controller

(CC) and, if required, one or more expansion units (EUs). You need EUs
when there are insufficient slots in the CC for the modules to be used.
Various interface modules (IMs) are available for communication between
the CC and the EUs and between the EUs. It is therefore possible to install an
EU or EUs in the immediate vicinity of the CC (centralized configuration) or
at some distance (distributed configuration). A combination of both types of
configuration is also possible by connecting additional EUs in a centralized
configuration with a distributed EU (see Figure 2-5).
This is clarified on the following pages.

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 Centralized and Distributed Configuration of a Programmable Controller

2.2 Centralized and Distributed Configuration

You can install a PLC in centralized or distributed configuration according to

your application.

IF ... THEN ...

you wish to position the modules as closely as choose the
possible to the CC and can accept longer cable runs to centralized
the process, configuration
you wish to position the I/O modules as closely as choose the
possible to the process and can accept longer cable distributed
runs to the CC, configuration

With the centralized configuration, you can install the CC and EUs in the
same cabinet or in adjacent cabinets. Data transmission is parallel. Shown in
the following figure is a centralized configuration.

EU

EU

CC

Load Power Supply

Figure 2-1 Centralized Configuration

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Centralized and Distributed Configuration of a Programmable Controller

With the distributed configuration, a distinction is made between parallel and

serial communication. The main features of these types of communication
are as follows:
S Parallel fast data transmission line length of up to 600 m
S Serial slower data transmission line length of up to 3000 m

2.2.1 Installing a PLC with Centralized Configuration

The following table shows which interface modules and connecting cables
can be used for connecting the various expansion units to the CC in a
centralized configuration.

Interface Module Expansion Unit Interface Module Connecting Cable

in the CC in the EU Max. Distance

IM 300-3 EU 183U IM 312-3 2) fixed to the IM 312 module

6ES5 300-3AB11 EU 185U 6ES5 312-3AB11 0.5 m; 0.95 m
(I/O mod. only)

IM 301-3 1) EU 183U IM 312-3 2) fixed to the IM 312 module

6ES5 301-3AB13 EU 185U 6ES5 312-3AB31 0.5 m; 0.95 m
(I/O mod. only)

IM 300-5 EU 184U IM 312-5 fixed to the IM 312 module

6ES5 300-5CA11 EU 187U 6ES5 312-5CA11 0.5 m; 1.5 m

IM 301-5 1) EU 184U IM 312-5 fixed to the IM 312 module

6ES5 301-5CA12 EU 187U 6ES5 312-5CA21 0.5 m; 1.5 m

IM 300-5 ER 701-1 IM 306 6ES5 705-0xxxx

6ES5 300-5LB11 6ES5 306-7LA11 0.5 m to 2,5 m

1) This IM has a second interface for distributed communication.

2) The last IM 312-3 always requires a 6ES5 760-0AB11 terminator.

To install a PLC in a centralized configuration, you must observe the

following conditions:
S A centralized configuration is generally only suitable for connecting I/O
modules (DI, DO, AI, AO) and some intelligent I/O modules (IPs) in the
EU (see the Configuring Aids in the catalog and Chapter 4).

S The line length between the IM in the CC and the last IM in the EU must
not exceed 2 m.

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 Centralized and Distributed Configuration of a Programmable Controller

2.2.2 Installing a PLC with Distributed Configuration

To install a PLC in a distributed configuration, you have a choice of
parallel/symmetrical and serial communication. The following table shows
which interfaces and connecting cables can be used to connect the various
expansion units (EUs/ERs) to the CC in a distributed configuration.

Interface Module Expansion Unit Interface Module in Connecting Cable

in the CC the EU Max. Permiss. Line Length
IM 301-3 EU 183U IM 310 1) 6ES5 721-0xxxx
6ES5 301-3AB13 ER 701-2 6ES5 310-3AB11 1 m to 200 m
(not for S5-155H) ER 701-3

IM 301-5 EU 183U IM 310 1)

6ES5 301-5CA12 EU 185U 6ES5 310-3AB11
IM 304 ER 701-2 IM 314 1) 6ES5 721-0xxxx
6ES5 304-3UB11 ER 701-3 6ES5 314-3UA11 1 m to 600 m
EU 183U
EU 185U
IM 308 ER 701-2 IM 318-3 6ES5 707-5AA00
6ES5 308-3UA12 ER 701-3 6ES5 318-3UA11 V45551-F21-B5
EU 183U up to 3000 m
EU 185U
ET 100U IM 318-8
(Catalog ST 52.1) 6ES5 318-8MA12
ICM 560 –
IM 308-B ET 200 IM 318-B Cable connection
6ES5 308-3UB11 6ES5 318-8MB11
IM 307 ER 701-2 IM 317 6ES5 722-2xxxx
6ES5 307-3UA11 ER 701-3 6ES5 317-3UA11 Fiber optic
p cable up
p to 1500 m
EU 183U IM 317
EU 185U 6ES5 317-3UA11

1) The last IM 310 or IM 314 always requires a 6ES5 760-1AA11 terminator.

The ER 701-2 and ER 701-3 always additionally require an IM 306 for

communication via an IM 304, IM 307 or IM 308.
To install a PLC in a distributed configuration, you must observe the
following conditions:
S With the IM 301/IM 310 pair of interface modules, you can only use I/O
modules (DI, DO, AI, AO) and IPs without page addressing in the EUs.
S With the IM 304/314 pair of interface modules, you can use all IPs, CPs
and I/O modules in the EU 185U.

Note
The IM 307/317, IM 308/318 and IM 308-B/318-B each have their own
manual (see catalog).

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Centralized and Distributed Configuration of a Programmable Controller

2.3 Examples

Given in the following are some examples of centralized and distributed

configuration of various SIMATIC S5 components.

3 EUs max.

EU 184U IM 312-5

4 EUs max.
IM 312-5
EU 184U EU183U IM 312-3

6ES5 760-0AB11
IM 312-5
EU 184U
EU183U
IM 312-3

IM 300-5

IM 300-3

CC S5-135U/155U
CC S5-135U/155U

Figure 2-2 Centralized Configuration of an S5-135U/155U with the IM 300

and IM 312

3 ERs max.

ER 701-1 IM 306

ER 701-1 IM 306

ER 701-1 IM 306

IM 300-5LB

CC S5-135U/155U

Figure 2-3 Centralized Configuration of an S5-135U/155U with ER 701s

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 Centralized and Distributed Configuration of a Programmable Controller

6ES5 721-0xxx0
EU185U EU 185U
4 EUs max.
IM 314 IM 314

6ES5 760-1AA11
IM 304 600m max.

CC S5-135U/155U

EU185U EU 185U
4 EUs max.
IM314 IM 314

6ES5 721-0xxx0
6ES5 760-1AA11

Figure 2-4 Distributed Configuration of an S5-135U/155U with the IM 304 and IM 314

6ES5 760-0AB11 IM 312-3 6ES5 760-0AB11 IM 312-3 6ES5760-0AB11 IM312-3

EU 183U EU 183U EU 183U

EU 183U EU 183U EU 183U

EU 183U EU 183U EU 183U

IM 300-3 IM 300-3
IM 301-3
EU 183U EU 183U

CC S5-135U/155U IM 310-3 IM 310-3 6ES5 760-0AA11

6ES5 721-0xxx0

Figure 2-5 Distributed Configuration of an S5-135U/155U with Expansion Units in Centralized Configuration

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Centralized and Distributed Configuration of a Programmable Controller

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Installation Guidelines 3
The Installation Guidelines provide you with information for the
interference-free installation of the SIMATIC S5-135U/155U programmable
controllers.
This chapter describes the following:
Paths which serve for interference pickup in programmable controllers,
and five rules for ensuring electromagnetic compatibility (EMC)
Interference-free installation of the programmable controllers
Cable routing, the connecting of cable shields and equipotential bonding
between equipment
The power supplies for control and load circuits, and the different
grounding concepts
Shielding and grounding for the connection of centralized and distributed
expansions and monitors to programmable controllers
The selection and design of cabinets

Chapter Section Description Page

Overview 3.1 Principles of Installation of Systems for EMC 3-2
3.2 Installation of Programmable Controllers for EMC 3-8
3.3 Wiring of Programmable Controllers for EMC 3-12
3.4 Power Supplies for Programmable Controllers and I/Os 3-20
3.5 Interference-Free Installation of Centralized and 3-28
Distributed Interface Circuits
3.6 Interference-Free Connection of Monitors 3-30
3.7 Selection and Installation of Cabinets with SIMATIC S5 3-33

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Installation Guidelines

3.1 Principles of Installation of Systems for EMC

What Does EMC Electromagnetic compatibility (EMC) is understood to mean the capability of
Mean? electrical equipment to operate correctly in a defined electromagnetic
environment, without being affected by the environment and without
affecting the environment to an unacceptable degree.
All SIMATIC S5 products have been developed for applications in harsh
industrial environments and meet high requirements for EMC. Before
installing the control system, however, you should still carry out EMC
planning and involve possible interference sources in the assessment.
Described in the following chapter are
the various paths over which interference can be picked up in the PLC,
typical interference sources and their coupling mechanisms,
basic rules for ensuring EMC.

3.1.1 Overview of Possible Types of Interference

Electromagnetic interference can be picked up over different paths by the

programmable controller:

Fields

SINEC Bus System Programmable I/O Signal Lines

Controller

Power Supply
Protective Conductor

Figure 3-1 Electromagnetic Interference with Programmable Controllers

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 Installation Guidelines

Depending on the propagation medium (conducted or non-conducted

interference) and distance from the source, interference can be picked up by
the programmable controller via different coupling mechanisms.
A distinction is made between the following:
Direct coupling
Capacitive coupling
Inductive coupling
Radiated interference

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Installation Guidelines

Coupling Shown in the following table are the four different coupling mechanisms,
Mechanisms and their causes, and possible interference sources.
Typical
Interference
Sources at a
Glance

Coupling Mechanism Cause Typical Interference Sources

Direct Coupling Direct or metallic coupling Switched devices (supply
always
l occurs when
h two circuits
i i affected
ff d bby iinverters and
d
have a common conductor external power supply units)
Interference
Motors being started
Different potentials of
component cases with a
Direct Coupling
Path
common power supplys
Static discharges

SIMATIC S5

Capacitive Coupling Capacitive or electrical coupling Interference pickup via

occurs bbetween conductors
d parallel
ll l signal
i l cables
bl
which are at different potentials.
Interference Static discharge of the
The degree of coupling is operator
proportional to the voltage Contactors
variation as a function of time.
Capacitive Coupling
Path

SIMATIC S5

Inductive Coupling Inductive or magnetic coupling Transformers, motors,

occurs bbetween two conductor
d electric
l i welders
ld
Interference loops through which current is Parallel AC supply cables
flowing. Interference voltages Cables whose currents are
are induced by the magnetic switched⁄
fluxes associated with the Signal cables with a high
currents. The degree of coupling frequency
Inductive
Coupling Path is proportional to the current Unconnected coils
Signal variation as a function of time.
SIMATIC S5

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 Installation Guidelines

Coupling Mechanism Cause Typical Interference Sources

Radiated Interference There is a radiation path when a Local transmitters
conductor
d iis subjected
bj d to an (
(e.g. two-way radios)
di )
electromagnetic wave. Spark gaps (spark plugs,
Interference Impinging of the wave results in collectors in electric motors,
induced currents and voltages. welders)

Radiation Path

SIMATIC S5

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Installation Guidelines

3.1.2 The Most Important Basic Rules for Ensuring EMC

It is often sufficient to comply with a few elementary rules for ensuring

EMC. When installing the control system, therefore, observe the following
five basic rules.
When installing the programmable controllers, provide large-area good
quality grounding of the inactive metal parts (see Section 3.2).
Make a large-area low-impedance interconnection of all inactive metal
parts.
For screw connections on painted and anodized metal parts, either use
special contact washers or remove the insulating protective layers.
If possible, do not use aluminum parts. Aluminum oxidizes easily and is
therefore less suitable for grounding.
Make a central connection between the chassis ground and the
ground/protective ground conductor system.

Ensure proper routing of lines when wiring (see Sections 3.3.1 and 3.3.2).
Arrange the cabling in line groups. (AC power cable, power supply lines,
signal lines, data lines)
Always install AC power cables and signal or data lines in separate ducts
or bunches.
Route the signal and data lines as closely as possible to grounded surfaces
such as cabinet elements, metal bars and cabinet panels.

Ensure that cable shields are properly secured (see Section 3.3.3).
Data lines must be shielded. The shield should be connected at both ends.
Analog lines must be shielded. For the transfer of signals with low
amplitudes, it may be advisable to connect the shield at only one end.
Provide the line shields with a large-area connection to a shield/protective
conductor bar immediately after the cabinet inlet, and secure the shields
with cable clamps. Route the grounded shield as far as the module
without interruption, but do not connect the shield there again.
Ensure that the shield/protective ground bar has a low-impedance
connection to the cabinet.
Use metal or metallized connector cases for shielded data lines.

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 Installation Guidelines

Employ special EMC measures for particular applications (see

Section 3.3.4).
Fit quenching elements to all inductances which are not controlled by
SIMATIC S5 modules.
Use incandescent bulbs for illuminating cabinets, and avoid fluorescent
lamps.

Create a standard reference potential; ground all electrical apparatus if

possible (see Sections 3.4 and 3.5).
Use specific grounding measures. Grounding of the control system is a
protective and functional measure.
System parts and cabinets with central controllers and expansion units
should be connected to the ground/protective conductor system in star
configuration. This serves to avoid the creation of ground loops.
In the case of potential differences between system parts and cabinets,
install equipotential bonding conductors of sufficient rating.

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Installation Guidelines

3.2 Installation of Programmable Controllers for EMC

Measures for suppressing interference voltages are often applied only when
the control system is already operational and proper reception of a useful
signal is impaired. The reason for such interference is usually inadequate
reference potentials caused by mistakes in equipment assembly. Described in
the following sections are:
Basic rules for grounding the inactive metal parts
Examples of cabinet assembly for EMC
Example of rack and wall mounting for EMC

3.2.1 Basic Rules for Assembling and Grounding the Inactive Metal
Parts

Ensure wide-area chassis grounding of the inactive metal parts when

mounting the equipment. Properly implemented grounding creates a uniform
reference potential for the control system, and reduces the effects of
picked-up interference.
Chassis grounding is understood to mean the electrical connection of all
inactive parts. The entirety of all interconnected inactive parts is the chassis
ground.
Inactive parts are conductive parts which are electrically isolated from active
parts by basic insulation, and can only develop a voltage in the event of a
fault.
The chassis ground must not develop a dangerous touch voltage, even in
the event of a fault. The ground must therefore be connected to the protective
ground conductor. To prevent ground loops, locally separated ground
elements such as cabinets, structural and machine parts, must always be
connected to the protective ground system in star configuration.
Ensure the following when chassis grounding:
Connect the inactive metal parts with the same degree of care as the
active parts.
Ensure low-impedance metal-to-metal connections, e.g. with large-area
good quality contact.
When you are incorporating painted or anodized metal parts in the
grounding, these insulating protective layers must be penetrated. Use
special contact washers or remove the insulating layer.
Protect the connection points from corrosion, e.g. with grease.
Movable grounded parts such as cabinet doors must be connected via
flexible grounding strips. The grounding strips should be short and have a
large surface because the surface is decisive in providing a path to ground
for high-frequency interference.

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3.2.2 Example of Cabinet Assembly for EMC

The example of cabinet assembly in the figure shows the various measures,
the grounding of inactive metal parts and the connection of shielded cables.
This example applies only to grounded operation. Follow the points
numbered in the figure during assembly.

1 2

4
5
6
7

8
Figure 3-2 Example of Cabinet Assembly for EMC

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Installation Guidelines

À Grounding strips
If there are no large-area metal-to-metal connections, you must
connect inactive metal parts such as cabinet doors and supports
with grounding strips. These should be short and have a large surface.

Á Cabinet members
The cabinet members should have a large-area connection to the
cabinet housing (metal-to-metal connection).

 Mounting bracket for subrack

There must be a large-area metal-to-metal connection between
cabinet member and mounting bracket.

à Signal lines
With shielded signal lines, the shield must be secured to the
protective conductor bar or an additionally fitted shield bar using
large-area cable clamps.

Ä Cable clamp
The cable clamp must enclose and make contact with the shield braid
over a large area.

Å Shield bar
This bar must have a large-area connection to the cabinet members
(metal-to-metal connection). It serves for grounding the cable shields.

Æ Protective conductor bar

The protective conductor bar must have a large-area connection to
the cabinet members (metal-to-metal connection). The protective
conductor bar must be connected to the protective conductor system
via an external conductor (at least 10 mm2 ). This is essential for
providing a reliable path to ground for fault currents and interference
currents.

Ç Conductor to the protective conductor system (ground point)

The conductor must have a large-area connection to the protective
conductor system (ground point).

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 Installation Guidelines

3.2.3 Example of Rack and Wall Mounting for EMC

To operate your control system in a low-interference environment whilst

observing the permissible ambient conditions (see “Technical
Specifications”), you can mount the programmable controllers on racks or
directly on walls.
Picked-up interference should be given a path to large metal surfaces. You
should therefore secure standard sectional rails, shield and protective
conductor bars to metal structural elements. For wall mounting in particular,
installation on reference potential surfaces made of sheet steel has proved
advantageous.
When installing shielded cables, provide a shield bar for connecting the cable
shields. The shield bar can also be the protective conductor bar.
Ensure the following for rack and wall mounting:
S Suitable contacting aids should be used on painted and anodized metal
parts. Use special contact washers or remove the insulating protective
layers.
S Provide large-area, low-impedance metal-to-metal connections when
securing the shield/protective conductor bar.
S AC conductors must be covered.

Reference Potential
Surface

Shielded Signal
Line
Cable Clamp for
Shield Contact

Shield/Protective
Conductor Bar

Connection to
P. Ground: 10 mm@

Figure 3-3 Wall Mounting of an S5-135/155U PLC

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Installation Guidelines

3.3 Wiring of Programmable Controllers for EMC

The following section describes:
Routing of cables within and outside cabinets
Equipotential bonding between devices
Single and double-ended connection of cable shields
Checklist for electromagnetically compatible installation

3.3.1 Routing of Cables

This section covers the routing of bus, signal and supply lines. The purpose
cable routing is to suppress crosstalk between cables laid in parallel.

Routing of Cables For electromagnetically compatible routing of cables and lines, it is

Within and expedient to subdivide the lines into the following line groups and lay the
Outside Cabinets groups separately.

Group A
Shielded bus and data lines (for programmer, OP, SINEC L1, SINEC L2,
printer, etc.)
Shielded analog lines
Unshielded lines for DC voltage v 60 V
Unshielded lines for AC voltage v 25 V
Coaxial cables for monitors
Group B
Unshielded lines for DC voltage > 60V and v 400V
Unshielded lines for AC voltage > 25V and v 400V
Group C
Unshielded lines for DC and AC voltage > 400V
Group D
Lines for SINEC H1

From the combination of individual groups in the following table, you can
read off the conditions for laying the line groups.

Group A Group B Group C Group D

Group A
 
Group B
 
Group C   
Group D   

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Legend for the table

Lines can be laid in common bundles or cable ducts.

Lines must be laid in separate bundles or cable ducts (without

minimum clearance).

 Lines within cabinets must be laid in separate bundles or cable

ducts; outside the cabinets but within buildings, they must be laid
over separate cable routes with a clearance of at least 10 cm.

 Lines must be laid in separate bundles or cable ducts with a

clearance of at least 50 cm.

Routing of Cables Outside buildings, lay the lines on metal cable trays if possible. Provide the
Outside Buildings joints between cable trays with an electrical connection and ground the cable
trays.
When laying lines outside buildings, you must observe the valid lightning
protection and grounding measures. The following applies in general:

Lightning
Protection
Caution
! Where cables and lines for SIMATIC S5 controllers are to be laid
outside buildings, you must apply measures for internal and external
lightning protection.

Outside the buildings, lay your lines either

in metal conduit grounded at both ends,
or
in concreted cable ducts with continuously connected reinforcement.
Protect the signal lines from overvoltages by means of
varistors
or
inert gas-filled surge diverters.

Fit these protective devices at the cable entry into the building.

Note
Lightning protection measures always require an individual assessment of
the entire installation. For clarification, please consult your Siemens regional
office or a company specializing in lightning protection.

Equipotential Ensure adequate equipotential bonding between the connected equipment

Bonding (see Section 3.3.2).

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Installation Guidelines

3.3.2 Equipotential Bonding

Between separate sections of an installation, potential differences can

develop if
S programmable controllers and I/O devices are connected via a
non-floating link, or
S cable shields are connected at both ends and are grounded at different
parts of the system.
Different AC supplies, for example, can cause potential differences. These
differences must be reduced by installing equipotential bonding conductors to
ensure functioning of the electronic components.
The following points must be observed for equipotential bonding:
S The lower the impedance of the equipotential bonding conductor, the
greater is the effectiveness of equipotential bonding.
S Where shielded signal lines are laid between the relevant sections of the
system and connected at both ends to the ground/protective conductor, the
impedance of the additional equipotential bonding conductor must not
exceed 10 % of the shield impedance.
S The cross-section of the equipotential bonding conductor must be rated
for the maximum circulating current. The following cross-sections of
copper have proved to be satisfactory in practice:
–16 mm@ of copper for equipotential bonding conductors
of up to 200 m in length
–25 mm@ of copper for equipotential bonding conductors
of more than 200 m in length.
S Use copper or zinc-plated steel for equipotential bonding conductors.
They must be given a large-area connection to the ground/protective
conductor and protect it from corrosion.
S The equipotential bonding conductor should be laid so that the smallest
possible areas are enclosed between the equipotential bonding conductor
and signal lines.

Signal Line

EquipotentialBonding Conductor

Figure 3-4 Routing of Equipotential Bonding Conductor and Signal Line

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3.3.3 Shielding of Cables and Lines

Shielding is a method of attenuating magnetic, electrical or electro-magnetic

interference fields. Interference currents on cable shields are given a path to
ground via the shield bar which is electrically connected to the housing. A
low-impedance connection to the protective conductor is particularly
important so that these interference currents themselves do not become an
interference source.
Where possible, only use lines with a braided shield. The coverage density of
the shield should be more than 80 %. Avoid lines with a foil shield because
the foil can be very easily damaged by tensile strain and compression during
fitting; this results in reduced effectiveness of the shield.
As a rule, line shields should always be connected at both ends. This is the
only way to achieve a good degree of interference suppression in the higher
frequency region.
Only in exceptional cases should the shield be connected at one end only, as
this only achieves attenuation of the low frequencies. Single-ended shield
connection may be more advantageous when:
an equipotential bonding conductor cannot be laid;
analog signals (of a few mV or mA) are to be transmitted;
foil (static) shields are used.
With data lines for serial communication, always use metal or metallized
connectors. Secure the shield of the data line to the connector case. Do not
connect the shield to Pin 1 of the connector.
For stationary operation, it is advisable to fully strip the insulation from the
shielded cable and connect it to the shield/protective conductor bar.

Note
In the event of potential differences between ground points, a circulating
current may flow through the shield connected at both ends. In this case,
install an additional equipotential bonding conductor (see Section 3.3.2).

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Installation Guidelines

Please observe the following points when connecting the shield:

Use metal cable clamps for securing the braided shield. The clamps must
enclose the shield over a large area and provide a good contact.
Connect the shield to a shield bar immediately after the cable entry into
the cabinet. Route the shield as far as the module but do not connect it
there again.

ÎÎÎÎ
ÎÎ Î ÎÎ Î
Î ÎÎ Î
ÎÎÎÎ Î
ÎÎ Î Î ÎÎ
ÎÎ

Figure 3-5 Example of Securing Shielded Lines with Cable Clamps

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 Installation Guidelines

3.3.4 Special Measures for Interference-Free Operation

Fitting Quenching As a rule, inductances such as contactor or relay coils controlled by

Elements to SIMATIC S5 do not require external quenching elements in the circuit,
Inductances because the quenching elements are already integrated in the modules.
Inductances should only be fitted with quenching elements
when SIMATIC S5 output currents can be switched off by additionally
fitted contacts, such as relay contacts. In this case the integrated
quenching elements in the modules are no longer effective;
if they are not controlled by SIMATIC S5 modules.
You can place freewheel diodes, varistors or RC networks in circuit with
inductances.

Circuitry for DC-Operated Circuitry for AC-Operated

Inductances Inductances

With Diode With Zener Diode With Varistor With RC Network

Figure 3-6 Quenching Circuits for Inductances

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Installation Guidelines

AC Power A power socket should be fitted in each cabinet for the AC supply to
Connection for programmers. The sockets should be powered from the distribution system to
Programmers which the protective conductor for the cabinet is also connected.

Cabinet Lighting Use incandescent bulbs, such as LINESTRA lamps, for cabinet lighting.
Avoid using fluorescent lamps because they generate interference fields. If
the use of fluorescent lamps cannot be avoided, apply the measures shown in
the following figure.

Screen Over the Lamp

Shielded Cable
Metal-Enclosed Switch

AC Filter or
Shielded Power Cable

Figure 3-7 Measures for Interference Suppression of Fluorescent Lamps in a

Cabinet

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 Installation Guidelines

3.3.5 Checklist for the Electromagnetically Compatible Installation of

Control Systems

EMC Measures Notes

Connection of inactive parts (Section 3.2)
Check, in particular, the connections on:
Subracks
Cabinet members
Shield and protective conductor bars
Do all inactive metal parts have a large-area, low-impedance
interconnection and ground?
Is there a satisfactory connection to the ground/protective conductor
system?
Have insulating layers on painted and anodized surfaces been
removed, or have special contact washers been used for the
connections?
Are connections protected from corrosion, e.g. by grease?
Are cabinet doors connected to the cabinet element with grounding
strips?
Routing of cables (Section 3.3.1)
Cabling subdivided into line groups?
Supply cables (230 to 400 V) and signal lines laid in separate ducts or
bundles?
Equipotential bonding (Section 3.3.2)
With a separate arrangement, check that the equipotential bonding
conductor has been correctly laid.
Shielding of cables (Section 3.3.3)
Have metal connectors been used throughout?
Are all analog and data lines shielded?
Are line shields connected to the shield or protective conductor bar at
the cabinet entry?
Are line shields secured with cable clamps over a large area and at
low impedance?
Are line shields connected at both ends where possible?
Inductances (Section 3.3.4)
Are contactor coils which are switched via contacts, fitted with
quenching elements?

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Installation Guidelines

3.4 Power Supplies for Programmable Controllers and I/Os

This section describes:

Which circuits you must distinguish in the control system and which
demands are made on the power supply.
Connection and grounding concept with higher-level infeed from
grounded, centrally grounded and ungrounded supplies.
Connecting the power supply to non-isolated and isolated modules.

3.4.1 Power Supplies for Control Systems with SIMATIC S5

For control systems with SIMATIC S5, you will need:

A power supply for the internal PLC circuits (control power supply)
and a load power supply for the input and output circuits.

Power Supply for The power supply for the internal PLC circuits powers the CPU and the
the PLC Circuits modules used.

Note
Ensure that the control power supply is not overloaded. Make a current
addition and estimate the current drawn by all modules.

Load Power The load power supply feeds the input and output circuits (load circuits) as
Supply for the I/Os well as sensors and actuators. Only a power supply which offers safe
electrical isolation from the AC system may be used for the 24 V DC supply.

Caution
! Only safety-separated low voltage DC v 60 V may be used for the 24 V DC
supply. The safety separation can be implemented according to the
requirements of, amongst other sources, VDE 0100, Part 410/HD
384-4-41/IEC 364-4-41 (functional extra-low voltage with safety separation)
or VDE 0805/EN 60950/IEC 950 (safety extra-low voltage SELV) or VDE
0106, Part 101.

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Ratings of Load The electronic short-circuit protection of digital output modules only
Power Supplies responds when 3-times the rated current is exceeded. You should therefore so
design the load power supply units that the unit can supply the current
required for shutting down in the event of a short-circuit at one output.
In the event of short-circuits at digital outputs, if the load power supply is not
adequately rated, a current which is higher than the rated current can flow for
a longer period without responding of the electronic short-circuit protection
of the DQ module. Operation in the overload region can destroy the module.

Load Power If you use non-floating modules, you must create a common reference
Supply for potential for the internal control circuits of the PLC and for the load circuits.
Non-Floating The reference potential of the load power supply should therefore be
Modules connected to the ground terminal of the PLC (PE or protective conductor
terminal). The ground terminal is permanently connected to the internal
reference potential of the controller.
Load Power
Supply for
Floating Modules Note
If you use switched-mode power supply units for floating analog modules
and BEROs, you must fit an AC system filter to the input of the power
supply.

3.4.2 Connecting the Programmable Controller and Load Power

Each of the following figures shows a circuit example for connecting the
control and load power supplies as well as the grounding concept for
operation from:
Grounded supplies
Centrally grounded supplies
Ungrounded supplies
When assembling the control system, observe the following explanations.
The text contains identification numbers relating to Figures 3-8 to 3-10.

Main Switch and

Protection For the programmable controller, sensors and actuators, you must fit a
main switch to DIN VDE 0113, Part 1, or an isolating device to DIN
VDE 0100, Part 460. If an AC plug is used as the isolating device, the
socket must be in the vicinity of the central controller and must be easily
accessible (VDE 0805, 1.7.2). These devices are not required in the case
of a subsystem where the appropriate devices are fitted at a higher level.
The circuits for sensors and actuators can be given group protection for
short-circuit and/or overload
. According to VDE 0100, Part 725,
single-phase protection is required; and all-phase protection to DIN VDE
0113, Part 1.

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Installation Guidelines

Load Power
Supply For 24 V DC load circuits, you require a load power supply unit with
safety separation. If an AC plug is used as the isolating device, the socket
must be in the vicinity of the central controller and easily accessible
(VDE 0805, 1.7.2).
Unregulated load power supply units require a reservoir capacitor
(rated at 200 mF per 1 A load current). Connect the capacitor in parallel
with the output terminals of the load power supply.
According to DIN VDE 0113, Part 1, control systems with more than five
items of electromagnetic apparatus require isolation by a transformer;
according to DIN VDE 0100, Part 725, it is recommended
.

Grounding
Load power supplies should be grounded if possible . Provide a
detachable connection to the protective conductor at the load power
supply unit (terminal L- or M) or on the secondary side of the isolating
transformer.

Caution
! For ungrounded power supplies, you must provide insulation monitoring if⁄
hazardous system states can be caused by double faults;
there is no safety separation;
circuits are operated with voltages of more than 120 V DC;
circuits are operated with voltages of more than 50 V AC.

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Operating a Operation from grounded power supplies offers the best rejection of
Programmable interference.
Controller with
Process I/Os from
a Grounded
Supply

Low-Voltage Distribution
e.g. TN-S System
L1
L2
L3
N
PE

Cabinet Programmable Controller

Control Power Supply

AC L+ L+/L1
DC L–
L–/N Uint CPU
L1 Floating
PS Non-Float- Non-Float- Floating
N Output
PE 0V ing Input ing Output Input

PE
Protective Conductor Bar
in Cabinet



AC Process I/Os
AC
 24 to 230 V AC Load Supply
for AC Modules
 

AC
DC
5 to 60 V DC Load Supply for
Non-Floating DC Modules
 

AC
DC
5 to 60 V DC Load Supply
for Floating DC Modules

Figure 3-8 Operating a Programmable Controller with Process I/Os from a Grounded Supply

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Installation Guidelines

Operating a In systems with their own transformers or generators, the PLC is connected
Programmable to the central ground. A detachable connection should be provided so that
Controller with ground faults can be measured.
Process I/Os from
The PLC should be insulated from cabinet/protective conductor potential. To
a Centrally
maintain this isolated arrangement, all connected devices must be operated
Grounded Supply
with capacitive grounding or ungrounded. For this reason, programmers
should only be powered via an isolating transformer.

Higher-Level Supply
L1
L2
L3

Detachable Con-
nection for
Measurement Cabinet Programmable Controller, Insulated Arrangement
Purposes
Central Ground,
e.g. Foundation
Ground

Control Power Supply

AC
L+ L+/L1
DC
L-
L–/N U int CPU
L1 PS
N 0V Non-Float- Non-Float- Floating Floating
PE ing Input ing Output Input Output

PE

Protective Conductor Bar in Cabinet,

Insulated Arrangement



AC
Process I/Os

AC

24 to 230 V AC Load Supply for AC Modules

 

AC

DC

5 to 60 V DC Load Supply for Non-Floating DC Modules

 

AC
DC

5 to 60 V DC Load Supply for Floating DC Modules

L1 L2 L3 N

Figure 3-9 Operating a Programmable Controller with Process I/Os from a Centrally Grounded Supply

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 Installation Guidelines

Operating a In cases in which the higher-level power supply is not grounded, you must
Programmable connect the programmable controller to a separate protective
Controller with conductor/ground (e.g. foundation ground). Operation of the PLC with
Process I/Os from non-floating power supplies is not allowed.
an Ungrounded
When connecting the power supplies, please note:
Supply
In 3 x 230 V systems, you may connect the power supply directly to two
phases.

Low-Voltage Distribution,
L1 e.g. IT System (3 X 230V)
L2
L3
PE

Schrank ProgrammableController

Control Power Supply

AC L+ L+/L1
DC L–
L–/L2
Uint CPU
L1
L2 PS 0V Non-Float- Non-Float- Floating Floating
PE ing Input ing Output Input Output

PE

Protective Conductor Bar

Protective in Cabinet
Conductor
Grounding

AC


Process I/Os
AC
 24 to 230 V AC Load Supply
for AC Modules
 

AC
DC
5 to 60 V DC Load Supply
for Non-Floating DC Modules
 

AC
DC
5 to 60 V DC Load Supply
for Floating DC Modules

Figure 3-10 Operating a Programmable Controller with Process I/Os from an Ungrounded Supply

In 3 x 400 V systems, a connection between phase and neutral conductor is

not allowed (excessively high voltage in the event of a ground fault).
Intermediate transformers should be used in these systems.

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Installation Guidelines

3.4.3 Connecting Non-Floating or Floating Modules

Shown in the following sections are the specical features when installing
non-floating and floating modules.

Installation with In an installation with non-floating modules, the reference potentials of the
Non-Floating control circuit (0 Vint) and load circuits (0 Vext) are electrically connected.
Modules
The reference potential of the control circuit (0 Vint) is given by the PE or
protective conductor terminal and must be connected to the reference
potential of the load circuit via an externally laid conductor.
Shown in the following figure is a simplified installation with non-floating
modules. The arrangement is independent of the grounding concept. The
connections for grounding are therefore not drawn.

Uint
Data
0V

PS CPU DI DQ

1L+
1L–
PE
Control Power External Connection for a
Supply Standard Reference Potential

2L+
2L–
DC 24 V Load Power Supply

Figure 3-11 Simplified Representation of an Installation with Non-Floating Modules

The voltage drop on line must not exceed 1 V. Otherwise there will be a
shift in reference potentials resulting in module malfunctions.

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Note
For 24 V DC digital output modules with electronic short-circuit protection,
you must ensure that the reference potential of the load power supply is
connected to terminal L- of the module. If this connection is missing (e.g.
open-circuit), a typical current of 15 mA can flow at the outputs. This output
circuit is sufficient
to prevent energized contactors or relays from being released
and to energize high-resistance loads (e.g. miniature relays).

Installation with With floating modules the control circuit and load circuit are metallically
Floating Modules isolated.
An arrangement with floating modules is required
for all AC load circuits and
for DC load circuits which cannot be coupled. The reasons are, for
example, different reference potentials of the sensors or grounding of the
positive terminal of a battery.
Shown in the following figure is a simplified installation with floating
modules. The arrangement is independent of the grounding concept. The
connections for grounding are therefore not drawn.

Uint
Data
0V

PS CPU DI DQ

1L+
1L–
PE
24 V DC Control Power Supply

2L+ L1
2L– N
24 V DC Load Power Supply 230 V AC Load Power Supply

Figure 3-12 Simplified Representation of an Arrangement with Floating Modules

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Installation Guidelines

3.5 Interference-Free Installation of Centralized and Distributed

Interface Circuits

Subjects described in the following sections are the shielding and grounding
concept with centralized and distributed interface circuits.
Information on component selection, the mechanical arrangement and wiring
can be found in the appropriate reference manuals for the interface modules.

Note
If you use components which are not approved for the installation of a
centralized or distributed interface circuit, interference rejection may be
impaired.

3.5.1 Interference-Free Installation of Centralized Interface Circuits

When you connect the central controller and expansion unit centrally via
suitable interface modules, no particular shielding and grounding measures
are required. Ensure, however, that
all subracks are interconnected at a low resistance;
the subracks in a grounded arrangement have star-configuration
grounding;
the contact springs of the modules are clean and not bent, which could
affect the path to ground for interference currents.

3.5.2 Interference-Free Installation of Distributed Interface Circuits

If you interconnect the central controller and expansion unit in a distributed

arrangement using suitable interface modules, no particular shielding and
grounding measures are usually required. Only in industrial environments
with an extremely high level of interference is there a need for special
shielding and grounding.
In these cases, please observe the following points:
Cable shields should be connected to the shield bar in the cabinet,
immediately after the cable inlet;
- insulation is fully stripped from the cable for the purpose;
- braided shields are secured to the shield bar with as large an area as
possible (e.g. with metal ties which enclose the shield over a large
area).
Shield bars should be connected to the frame or cabinet panel over a large
area.
Cable shields should be connected to the cabinet conductor.

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With distributed interfacing (IM 304/IM 314 and IM 301/IM 310), ensure
that the VDE specifications for laying the protective ground are complied
with; distributed interfacing is non-floating.
The measures described above are shown in the following figure. If the
permissible potential difference between ground points can be exceeded, you
must install an equipotential bonding conductor (cross-section w 16 mm2 of
copper).

CC EU
IM 304 IM 314

Shield/Protective
Conductor Bar

<7V

Figure 3-13 Shielding and Grounding the Connecting Cable

Special Features With distributed interfacing, you must use the prefabricated connecting
cables. You may have excess lengths of up to 100 m when installing the
connecting cable. These excess lengths must be bifilar-wound and deposited
at a point which is protected from electromagnetic interference.

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Installation Guidelines

3.6 Interference-Free Connection of Monitors

These sections cover the following topics:

Floating connection of cables at video inputs
Shielding and grounding concept
Information on selecting the components can be found in Catalog ST80.

3.6.1 Interference-Free Connection of a Monitor to the CP of the S5

Controller

Operator control and process monitoring systems from the COROS product
family can be used with monitor connections. The physical arrangement of
apparatus and the interference level of the environment are important for the
interference-free connection of monitors to SIMATIC S5 control systems.
The choice of monitor and video cables is governed by the following:
Whether the monitor and PLC are to be operated under low-interference
conditions or
under industrial conditions.

Operation of the Where the monitor and PLC are installed under low-interference
Monitor and PLC environmental conditions and operated over short distances, the monitor and
under PLC are at almost the same ground potentials. Interference and ground loop
Low-Interference disturbances are therefore not expected.
Conditions
In these cases, you can drive the monitor both via TTL signals and via analog
signals. Digital cables or single-shielded coaxial cables can be used to
transmit the video signals. Note that the braided shield of the coaxial cable
serves as the return conductor and must not be connected to the shield bar.
The monitor and communication processor (CP) are interconnected without
additional shielding and grounding.

Operation of the Where the monitor and PLC are installed under harsh industrial conditions
Monitor and PLC and operated over great distances, the devices may be at different ground
under Industrial potentials. These different ground potentials may cause interference and
Conditions ground loop disturbances.

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In these cases, double-shielded coaxial cables (triaxial cables) must be used

to transmit the video signals. The inner braided shield of the coaxial cable
serves as the return conductor and must not be connected to the shield bar.
The outer braided shield provides a path to ground for interference currents
and must be incorporated in the shielding and grounding measures.
To avoid ground loops, the electronics ground and housing ground of the
monitor must be independent. This requirement is met when:
The electronics and housing grounds of the monitor are metallically
isolated,
or the electronics and housing grounds are connected via a
voltage-dependent resistor (VDR) fitted by the manufacturer of the
monitor.

3.6.2 Shielding and Grounding

If the monitor and PLC are used under harsh industrial conditions, you must
ensure the following at the PLC end:
Cables shields should be connected to the shield bar in the cabinet,
immediately after the cable inlet;
- the video cables should be fully stripped;
- the outer braided shield should be secured to the shield bar of the
PLC over as large an area as possible (e.g. with metal ties which
enclose the shield or with cable clamps).
Shield bars should be connected to the frame or cabinet panel over a large
area.
Shield bars should be connected to the ground point of the cabinet.

You must ensure the following at the monitor end:

Separate the electronics ground and housing ground.
- Remove the jumper at the monitor to separate the two grounds.
- Fit touch protection at the video sockets because hazardous touch
voltages of more than 40 V may be present at the sockets after
separation of the grounds.
Connect the ground clamp of the monitor to the protective conductor.
Connect the cable shields to the ground clamp of the monitor;
- fully strip the video cables;
- secure the outer braided shield to the ground clamp of the
monitor over a large area.

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Installation Guidelines

Shown in the following figure is a simplified representation of the shielding

and grounding measures for installing the monitor and PLC.

CP
Monitor with
Separate
Electronics and
Housing Grounds

External Shield
Shield/ Connected to
Ground Clamp
Protective
Conductor
Bar

Figure 3-14 Shielding and Grounding for a Distributed Arrangement of Monitor and PLC

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3.7 Selection and Installation of Cabinets with SIMATIC S5

The following criteria must be observed when selecting and dimensioning a

cabinet:
Ambient conditions at the point of installation of the cabinet
Clearances for power supplies and subracks
Total power dissipation of components in the cabinet
The ambient conditions at the point of installation of the cabinet
(temperature, humidity, dust, effects of chemicals) govern the required
degree of protection of the cabinet (IP XX) as shown in the following figure.
Further information on types of protection can be found in IEC 529.

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Installation Guidelines

3.7.1 Types of Cabinet

The following table provides on overview of the most common types of
cabinet. It also shows the principle of heat removal, as well as the estimated,
maximum achievable power loss removal and the type of protection* .

Open Cabinets Closed Cabinets

Through-ventilation by Increased Natural convection Forced circulation Forced circulation
natural convection through-ventilation using fan assembly, using heat exchanger,
enhanced natural external ventilation
convection inside and outside

Heat removal primarily Increased heat removal Heat removal only Heat removal only via Heat removal through
by natural thermal through increased air through the cabinet the cabinet wall. Forced exchange between
convection, small movement wall; only low power ventilation of the heated internal air and
portion via the cabinet dissipation permissible. internal air results in cool outside air. The
wall Heat accumulation improved heat removal increased surface of the
usually occurs in the and prevention of heat folded-area sectional
top of the cabinet. accumulation. wall of the heat
exchanger and forced
circulation of internal
and external air permit
good heat output.
Type of protect. IP 20 Type of protect. IP 20 Type of protect. IP 54 Type of protect. IP 54 Type of protect. IP 54
Typical removable power dissipation under the following boundary conditions:
Cabinet size 2200 x 600 x 600 mm
Temperature difference between external and internal temperature of the cabinet: 20 °C**
Up to 700 W Up to 2700 W (1400 W Up to 260 W Up to 360 W Up to 1700 W
with very fine filter)
* The location and ambient conditions are decisive for selection of the type of cabinet protection
(
see IEC 529 and DIN 40050).
** For other temperature differences, refer to the temperature characteristics of the cabinet
manufacturer.

3.7.2 Clearances in Cabinets

You must first define the components to be fitted in the cabinet. Then
calculate the total power dissipation of the individual components. The
following stipulations must be observed:
The expansion units can be accommodated with the respective central
controller in one cabinet, or in two or more cabinets (centralized or
distributed).
On account of the required clearances and maximum permissible
installation height for control elements, a maximum of three SIMATIC S5
devices can be arranged one above the other.

System Manual
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 Installation Guidelines

! !(# &""*

 % #

)&$%
#
&#


 

  !# # $

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)&$%
#
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  !# # $

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)&$% 
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&#


+

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75 mm min., smaller clearances are possible with a closed cabinet roof and an additional, separate ventilation
roof.
A maximum clearance of 400 mm is possible (50 mm min.) when devices are connected next to one another.
75 mm min. from obstructions (large apparatus) in the air inlet area.
400 mm minimum installation height above access level for control elements, 200 mm for connections.
Maximum installation height for control elements: 2100 mm to DIN VDE 0106, Part 100,
2000 mm to DIN VDE 0113.
Space for air circulation (400 mm deep cabinets are sufficient).
Baffles are recommended to improve the air supply.

Figure 3-15 Clearances in the Cabinet

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Installation Guidelines

Where subracks (CC and EU) are arranged one above the other, the
installation clearances in the following table must be observed.

Upper Subrack Lower Subrack Min. Clearances Max. Clearances

S5-135U/ 155U S5-135U 75 mm The maximum clearance
or 87 mm if baffle is limited by the lengths
S5-115U is used of connectingg cables for
or S5-115U with fan 60 mm the
h interface
i f modules.
d l
S5-90U/ 95U/ 100U
S5-115U without fan 100 mm
S5-90U/ 95U/ 100U 75 mm

The following two points should be observed to improve the air circulation
within the cabinet:
The expansion unit with the greatest power dissipation to be removed
should be the upper unit.
If subracks of the S5-135U/155U series are installed together with
subracks of the S5-90U to 115U series in one cabinet, the rear panels of
all subracks must be at the same distance from the rear wall of the
cabinet.

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 Installation Guidelines

3.7.3 Removal of Power Dissipation from Cabinets

The power dissipation that can be removed from a cabinet is governed by the
cabinet design, its ambient temperature and the arrangement of equipment in
the cabinet.
Shown in the following figure is a diagram with guide values for the
permissible ambient temperature of a cabinet measuring 600 x 600 x 2200
mm, as a function of power dissipation. These values only apply to the
arrangement of equipment in the cabinet as given in Section 3.6.2. Further
details can be found in Catalogs NV21 and ET1.

Ambient Temperature
o
in C
55

50

40
1

30
2

3
20
200 400 600 800 1000 1200 1400 W
Power Dissipation
1 Closed cabinet with heat exchanger of size 11/6 (920 x 460 x 111 mm)
2 Cabinet with through-ventilation by natural convection
3 Closed cabinet with natural convection and forced circulation using fan

Figure 3-16 Maximum Cabinet Ambient Temperature as a Function of Power Dissipation

Note
When fitting the subracks of the S5-135U/155U series, the maximum power
dissipation which can be removed by the fans must not be exceeded. The
maximum removable power dissipation per unit with a supply air
temperature of 55 °C is 250 W. This value is increased by 20 W for each
reduction in supply air temperature by 1 °C.

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Installation Guidelines

Caution
! Modules with a hard disk drive can only be used at an ambient temperature
of up to 50 °C.

3.7.4 Examples for Determining the Type of Cabinet

The following example shows the maximum permissible ambient

temperature with various cabinet types and the same power dissipation.

Example
The following equipment configuration is given:
1 Central controller 200 W
2 Expansion units, 250 W power dissipation each 500 W
1 Load PS, 24 V/40 A, 6EV1 362-5BK00 (full load) 200 W
Total power disspation 900 W

From Figure 3-16, with a total power dissipation of 900 W, the maximum
ambient temperatures given by the table are as follows:

Cabinet Design Max. Permissible Ambient

Temperature
Closed, with natural convection and forced (Operation not possible)
circulation (Curve 3)
Open with through-ventilation (Curve 2) Approx. 33 °C
Closed, with heat exchanger (Curve 1) Approx. 42 °C

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 Installation Guidelines

3.7.5 Determining the Power Dissipation of Modules

The power dissipation of the modules can be found in the technical

specifications of the catalogs or manuals. If these values are not yet
incorporated in the technical specifications, they can be easily calculated
from the current consumption. The value of current consumption must be
multiplied by the corresponding voltage value.
Examples

CPU 928B Current 5A/5V

consumption Power dissipation = 25 W
CP 143 Current 4A/5V
consumption 0.5A/15V Power dissipation
0.04A/24V approx. 21 W
IM 304 Current 1.5A/5V
consumption Power dissipation = 7.5 W

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Installation Guidelines

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Central Controllers and Expansion Units
Power Supply Units 4
The S5-135U/155U programmable controller comprises a central controller
(CC) and, depending on the configuration, one or more expansion units
(EUs). Expansion units are connected when there are unsufficient central
controller slots, or when you wish to position I/O modules as closely to the
process as possible (see also Chapter 2).
With the central controllers and some expansion units, the modules are
directly powered and cooled via the integrated power supply plug-in module.
With all other expansion units, power is supplied via the IMs from the CC
(see also Chapter 7).

Chapter Section Description Page

Overview 4.1 S5-135U/155U Central Controller 4-2
4.2 Expansion Units 4-15
4.3 Power Supply Units 4-19
4.4 6ES5 955-3NA12 Power Supply Unit 4-57
4.5 Fan Submodules 4-70

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Central Controllers and Expansion Units Power Supply Units

4.1 S5-135U/155U Central Controller

This description applies to the S5-135U/155U CC with the following power
supply units.
Order No. of the CC With Power Supply Unit Input Voltage
6ES5 188-3UA12 6ES5 955-3LC42 120 V/230 V AC, 18 A
6ES5 188-3UA22 6ES5 955-3LF42 120 V/230 V AC, 40 A
6ES5 188-3UA32 6ES5 955-3NC42 24 V DC, 18 A
6ES5 188-3UA52 6ES5 955-3NF42 24 V DC, 40 A
6ES5 135-3UA42 6ES5 955-3NA12 24 V DC, 10 A

4.1.1 Technical Description

Assembly of a The S5-135U/155U CC consists of a housing with backplane bus to accept

Central Controller the individual modules, and a power supply unit with fans to power and cool
the modules. Shown in the following figure are the most important parts of a
central controller.

1)

5) 8)

6)

4) 7)

9)
2) 3)
10)

Figure 4-1 Assembly of a Central Controller

1. Housing with 21 slots for modules
2. Power supply unit with fans
3. Battery compartment
4. Cable duct
5. Locking bar
6. Mounting bracket
7. Sectional rail for individually locking the modules
8. Backplane bus
9. Filter subdrawer (optional)
10. Rechargeable battery

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Housing The housing consists of bolted sheet-steel sections with ventilation openings
at the top and bottom. The housing contains the bus PCB for electrical and
logical interconnection of the modules. All the slots have guiderails which
accept the modules. Male and female connectors are thus precisely
positioned. There is a locking bar at the top of the housing to prevent the
modules from becoming accidentally detached. Modules with individual
locking are secured in the lower sectional rail. There is a cable duct for
incoming and outgoing cables at the front of the housing.
Power Supply Unit The power supply unit with the fans is situated in the lower part of the central
controller frame. Depending on the type of power supply, the input voltage is
either 24 V DC or 230/120 V AC. The AC version can be adjusted to the
required AC voltage with a selector switch.
Modules and Slot The following table shows which modules can be inserted at which slots.
Assignments in
the S5-135U/155U
CC
Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163

Module Type
923 coordinator

CPU 922/
CPU 928-3UA21/
CPU 928B-3UB21
CPU 928, CPU 928B
CPU 948
CP 5XX, CP 143,
CP 5430, CP 5431 1)
IM 300-5
IM 301-5 2)
IM 300-3, IM 301-3
IM 304, IM 308, IM 308B
IM 307 1) 3)

DI, DQ,
AI, AQ 1)
IP 241USW, IP 244,
IP 246, IP 247, IP 252 1)
IP 240, IP 241, IP 242,
IP 242A, IP 242B, IP 243,
IP 281 1) 4) 5)
IP 245
IP 257 6)
IP 260,
IP 261
Load power supply
-951 1)
Electrical connection Mechanical width

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Central Controllers and Expansion Units Power Supply Units

1) Allow for particular module widths; additional slots to the right may be occupied (see Catalog ST 54.1).
2) In the CC with Order No. 6ES5 135-3UA41, only at Slot 163
3) Observe jumper setting on the IM 307; interrupt transmission is only possible at Slots 107 to 131.
4) Operation at Slots 27, 43, 59, 139, 147 is only possible with severely restricted functions, because no interrupts are wired.
5) IP 243 without D/A or A/D converter can be used at Slots 27, 43, 59, 139 and 147.
6) Allow 1 to 4 slots for the DI/DQ 482 to the right of the IP 257.

Caution
! Do not insert modules at slots which are not intended for them, otherwise
these or other modules may be destroyed.

The following table shows which slots have particular characteristics. The
manuals for the individual modules explain how these characteristics can be
utilized.

Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163

Characteristic
PG Mux
possible 1) 0 1 2 3 4 5 6 7

Interrupt source
(process interrupt)

Battery backup
24 V supply
15 V supply

1) The numbers indicate the station numbers for programmer (PG) communication via PG multiplexers
of the COR 923C.

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The modular packaging technique allows variable configuration of a CC with

modules and its adaptation to the particular automation task.
The various modules carry out the following tasks:
S CPU
The CPU processes the input signals of the PLC according to the user
program, and emits the results as output signals. The following CPUs can
be used in the S5-135U/155U PLC
– CPU 948
– CPU 928B
– CPU 928
– CPU 922
S Coordinators
By using a coordinator, you can configure the S5-135U/155U as a
multiprocessor controller with up to four task-oriented CPUs in different
combinations. Each CPU processes its program independently of the
others.
S I/O modules
The I/O modules provide the link to the process.
S IP module
The intelligent I/O modules (signal pre-processing modules) off-load the
CPU by independently executing compute-intensive tasks such as
controlling, counting and positioning.
S Interface modules (IMs)
If your CC has insufficient slots to insert all the modules required for your
automation task, you can increase the number of modules with expansion
units. The IM modules provide the link between central controller and
expansion units.
S CP module
CP modules allow point-to-point communication for data interchange
between two PLCs, between one PLC and an external unit, between one
PLC and a SINEC bus system or between one PLC and the COROS
operator control and process monitoring system. You can use additional
CP modules, such as the CP 581, CP 516, for the acquisition, storage,
administration and preprocessing of large volumes of data.
S VP module
VP modules enable the local acquisition and displaying (visualization) of
process data of a PLC of the SIMATIC S5.

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Central Controllers and Expansion Units Power Supply Units

4.1.2 Installation

Installing the The S5-135U/155U CC is designed for installation in cabinets, on racks and
Central Controller walls. The S5-135/155U CC must only be accessible from the front for
connection and maintenance work.
Consult the Installation Guidelines in Chapter 4 for planning and
implementing the installation with respect to EMC.
Shown in the following figures are the important dimensions in mm for
installation of a CC.

482.6
465
310 440
225
SIMATICS5135U
0
5

44

127.5
266.35

138.4
328

221.8
432

260.9
459

265.9

SIMATICS5 SIEMENS

Filter Subdrawer

Figure 4-2 Mounting Dimensions of an S5-135U/155U Central Controller

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An air supply as shown in the following illustration must be ensured.

Locking Bar
Exhaust Exhaust
air air

ÈÈ ÈÈÈ
È
ÈÈ ÈÈÈ
È
ÈÈÈÈÈÈÈÈÈ
+

ÈÈ
ÈÈ
ÈÈ
ÈÈ
Rear Panel +
Shield

ÈÈ
+
Guide Rail
Bus Connector

Bus PCB
ÈÈÈÈÈÈÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈÈ
Cable
Duct
+

ÈÈ
ÈÈ
ÈÈ
ÈÈ Fan

ÈÈ ÈÈÈÈÈ
ÈÈ ÈÈÈÈÈ
ÈÈÈÈÈ
ÈÈÈÈÈÈÈÈÈÈÈÈÈÈÈ
Heat Sink
ÈÈÈÈÈÈÈÈÈÈÈÈÈÈÈ Supply air Filter Subdrawer
1)
d
Exhaust air

Additional PLC or EU
Baffle

Figure 4-3 Air Supply to the Central Controller

1) d: Clearance > 87 mm when a baffle is used

d: Clearance > 89 mm when a filter subdrawer is fitted
d: Clearance > 75 mm without filter subdrawer

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Central Controllers and Expansion Units Power Supply Units

You can use the mounting brackets on the subrack for installation in cabinets,
on racks and walls. Use M6 bolts or, for wall mounting, screws of suitable
size.
One person can carry out the installation work.
The mounting brackets can be fitted to the housing in the following ways:

32 5

Flush 16

Figure 4-4 Methods of Fitting the Mounting Brackets

Fitting the The dimensions of the modules for the S5-135U/155U PLC comply with the
Modules double-height Eurocard format (h x d = 233.4 x 160 mm).
There are modules with different mounting width. For example:

Slots Occupied SPS 1) Front Plate Width in mm Example

1 1 1/3 20.3 CPU 922
2 2 2/3 40.6 CPU 948
4 5 1/3 81.3 CP 580

1) SPS standard-plug-in station: 1 SPS = 15.24 mm

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Proceed as follows to fit the modules:

Step Action
1 Disconnect the CC from system power.
2 Slacken the two screws with which the locking bar is fixed to the subrack.
3 Pull the locking bar forward to its end stop.
– The rail swivels up.
4 If there is a locking pin on the lower part of the module, turn it to the
horizontal position.
5 Grasp the module at the front plate, insert it into the lower and upper
guide rails and push it in.
– The connectors at the rear will engage in the sockets on the
backplane bus, and the release lever on the lower part of the
module will be horizontal.
6 If a locking pin is fitted, push it in and rotate it 90 degrees.
– If you have correctly fitted the module so far, it should no longer
be possible to pull it out of the subrack.
7 Swivel the locking bar down and push it back into the subrack.
8 Retighten the two screws on the locking bar.

Some I/O modules can also be fitted or removed during operation. Consult
the reference manuals for the I/O modules, under “Release circuit.”
Free slots can be covered with dummy front plates. This improves the flow of
cooling air in the unit. See the ordering information for order numbers.

Connections of The connecting cables of CPUs, communication processors and EU interface

CPUs, CPs and modules are connected with metal front connectors.
IMs
There are two types of metal front connector:
A metal front connector with slide lock is secured after plugging it in,
by sliding the lock downward.
A metal front connector with milled screws is secured to the unit with
the screws.

Note
Ensure that the connectors are assigned to the correct modules to avoid
damage.

The connection of signal lines for the I/O modules is described in Chapters 8
and 9.

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Central Controllers and Expansion Units Power Supply Units

4.1.3 Startup

Start up the CC in the sequence of steps given here. This will take you up to
the first trial run of the CPU. Given in parentheses are references to the
chapters of the manual in which the subject is explained in detail.
To ensure a straightforward sequence for the startup, commence with one
CPU and no EUs.
Proceed according to the following steps to place the CC in operation:

Step Action
1 Install the PLC so that the supply of air and exhaust air are unimpeded. If
you fit two or more units (CC and EU) in one cabinet, observe the
clearances and use baffles where necessary (see Chapter 3).
2 Fit a lithium battery (see Sections 4.3 and 4.4) or connect an external
backup battery and connect the rechargeable battery.
3 Fit the CPU and set the mode switch to STOP.

4 Connect the power supply and connect the 24 V DC load supply to the
monitoring input. Check the setting of the voltage selector switch (on 230/
120 VAC power supplies). Fit a protective cover over the AC terminals.
5 Switch on the power and, if present, the 24 V load supply.
Position the “Power” switch I.
Reaction: Green LED “Power Supply ok” in the “DC 5 V” field and in the
“DC 15/24 V” field light up.
6 Hold the CPU switch in the OVERALL RESET position and move the
switch from STOP to RUN.
Reaction: The “Stop” LED flashes rapidly.
7 Repeat Step 6.
Reaction: The “Stop” LED lights up constantly.
8 Keep the pushbutton in the RESET position and move the switch from
STOP to RUN.
Reaction: Green “Run” LED lights up, “BASP” LED (output inhibit) goes
off.

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Startup and The following flowchart provides an overview of the sequence for startup
Validity Check and validity check of a CC with CPU inserted and with no user program. For
the CPU 948, all steps relating to the memory submodule are skipped.

Insert memory submodule in

CPU (not with the CPU 948)

CPU at “STOP”

Connect power supply unit

Switch on supply voltage

PS:
PS:
LED “DC5V” No
No Correctly wired?
and “DC 24V” on, all Voltage Present?
others off
Replace bty
compartment
Yes
Yes Yes

CPU: No
LED “RB Press Replace
No LED “BASP” on
Low” on RESET rechargeable
LED “STOP” flashing fast
LED off battery
all others off
Yes
Yes
No
LED “MB Press No
Yes Check backup bty Fault
Low” on RESET corrected
and replace
LED off
if necessary
CPU general reset
Yes
LED “Fan
Check
Fault” on Fan No
Fault
corrected Replace PS
LED Check load
“Voltage voltage
Low” on connection

CPU: CPU:
LED ”BASP” on No Replace CPU
LED “STOP” on No
LED “BASP” on LED “STOP” flashing fast or
all others off all others repeat startup
off

Yes Yes

Memory
No
Reset CPU: Set to “Reset,” submodule: Insert memory
switch from “STOP” to “RUN” correctly inserted? submodule correctly

Yes

CPU: Replace memory submodule

LED “RUN” on, No
LED “BASP” off

Yes

Unit O.K.

Figure 4-5 Startup

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Central Controllers and Expansion Units Power Supply Units

4.1.4 Repair Guidelines

If measurements or testing become necessary whilst the unit is operational,

accident prevention regulations VBG 4.0 must be observed, especially the
permissible actions when working on active parts.
Only use tools that are suitable and approved for working on electrical
equipment.
S Repair of an automation system may only be carried out by the
SIEMENS customer service or by qualified personnel (see above).
S Always disconnect the AC power plug or open the isolating switch before
opening the unit. Wait at least 8 minutes before pulling out and opening a
power supply unit (see Section 4.2.3).
S Parts or components of a central controller may only be replaced by types
listed in Catalog ST 54.1 or in the appendix to this manual.
S Fuses may only be replaced by the same type.
S Instructions for maintenance of the individual components can be found
in the relevant chapters of this manual.

Warning
! Unauthorized opening and improper repairs can result in death or serious
personal injury as well as considerable damage.

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4.1.5 Technical Specifications

Important for the USA and Canada

The following approvals have been granted for the central controllers and
expansion units:
S UL Listing Mark
Underwriters Laboratories (UL) to
Standard UL 508, Report E85972

S CSA Certification Mark

Canadian Standards Association (CSA) to Standard
C 22.2 No. 142, Report LR 63533C

Unit safety
The unit complies with: VDE 0160, IEC 1131-2
Protection against overvoltage
Overvoltage Class 2 (not with PS -3NA12) VDE 0160 A1
Class of protection I
Type of protection IP 20 to IEC 529/DIN 40050
(when empty slots are covered by dummy front plates)
Climatic ambient conditions (tested to DIN IEC 68-2/-1/2/3)
Ambient temperature in operation 0 to 55 °C
(supply air measured at lower air inlet of the unit)
Transportation and storage temperature - 40 to 70 °C
Temperature variation:
in operation 10 K/h max.
during transportation and storage 20 K/h max.
(when delivered at less than 0 oC, at least 3 h

acclimatization because of possible

condensation)
Relative humidity: 95% max. at 25 °C, no condensation
in operation, during transportation and
storage
Altitude:
in operation - 1000 m to + 1500 m above sea level
(1080 hPa to 860 hPa)

during transportation and storage - 1000 m bis + 3500 m above sea level
(1080 hPa to 660 hPa)
Pollutants:
SO2 0,5 cm 3 / m 3, 4 days

H2S 0,1 cm 3 / m 3, 4 days

Mechanical ambient conditions (tested to DIN IEC 68-2-6)
Vibration during operation 10 to58 Hz (const. amplitude 0.075 mm)
58 to 500 HZ (const. acceleration 1g)

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Central Controllers and Expansion Units Power Supply Units

Noise immunity, electromagnetic compatibility (EMC)

RFI suppression To EN 55011
Limit value class A 2)
Conducted interference on AC supply lines (230 V AC)
to EN 61000-4-4 / IEC 1000-4-4 (burst) 2 kV
to IEC 1000-4-5
1 kV
between two lines (ms pulses) 2 kV

between line and ground (ms pulses)

DC supply lines (24 V supply) to EN 61000-4-4 / IEC 1000-4-4
(burst) 2 kV
Signal lines to EN 61000-4-4 / IEC 1000-4-4 (burst) 2 kV 1)
Immunity to discharge of static electricity to EN 61000-4-2 / Immunity of 4 kV contact discharge
IEC 1000-4-2 (ESD) 2) (8 kV air discharge) is ensured with proper
installation (see Chapter 3).
Immunity to electromagnetic RF field 2) 80 to 1000 MHz
amplitude modulated to ENV 50140 / IEC 1004-4-3 10 V/m
80% AM (1 kHz)
Immunity to electromagnetic RF field 2) 900 MHz
pulse-modulated to ENV 50204 10 V/m
50% ED
Immunity to high-frequency sinusoidal to ENV 50141 0.15 to 80 MHz
10 V
80% AM
Mechanical data
Mechanical requirements Installation in stationary equipment, subject to
vibration; installation on ships and in vehicles if
special installation rules are observed, but not on
the engine.
Weight approx. 14 kg

Dimensions (W x H x D) 482.6 x 432 x 310 mm

1) Signal lines which do not serve to control the process, for example connections to the external I/O etc.: 1 kV
2) When cabinet door is closed.

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4.2 Expansion Units

This chapter contains information on the application, installation and

operation of the following expansion units.

Order No. of Expansion Unit Power Supply or Fan Subassembly

6ES5 183-3UA13 6ES5 955-3LC42
6ES5 183-3UA22 6ES5 955-3NC42
6ES5 184-3UA11 230/120 V AC fan subassembly
6ES5 184-3UA21 24 V DC fan subassembly
6ES5 185-3UA13 6ES5 955-3LC42
6ES5 185-3UA23 6ES5 955-3NC42
6ES5 185-3UA33 6ES5 955-3LF42
6ES5 185-3UA43 6ES5 955-3NF42
6ES5 187-5UA11 –

Interface Modules Various interface modules (IMs) are available for communication between
the CC and EUs and between EUs. Data transmission between CC and EU,
and therefore between CPU and I/O module, is governed by the IM. A
description of interface modules is given in Chapter 7.
The following table contains information on available types of expansion unit
with their main features.

EU Type EU 183 EU 184 EU 185 EU 187

Version
Own power supply yes no yes no
With fan yes yes yes no
With cable duct yes yes yes no
Number of slots 21 21 21 11
Pluggable modules:
DI/DQ yes yes yes yes
AI/AQ yes yes yes yes
IP without page yes yes yes no
IP with page no no yes no
CP no no yes no
With interrupt processing no no no no

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Central Controllers and Expansion Units Power Supply Units

4.2.1 Technical Description of the Expansion Units

The design of the EUs is comparable to that of the CC: they comprise a
compact housing with a type-dependant number of slots for modules and,
according to the type of EU, a cable duct, an integral power supply unit or
fan subassembly.
The mounting dimensions of the EU 183U, EU 184U and EU 185U are the
same as those of the 135U/155U CC (see Figs. 4-3 and 4-4). The EU 187U
has neither power supply unit nor cable duct. Its overall height and depth are
therefore different from those mounting dimensions of the other EUs.

440
225
SIMATICS5135U
266

Figure 4-6 Mounting Dimensions of the EU 187U

Modules and Slot The following tables show which modules can be inserted at which slots.
Assignments of
the Expansion
Units
Modules and slot assignments of the EU 183U
Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163
Module type
IM 300

IM 310, IM 314,
IM 318
IM 317

IM 312-3

DI, DQ,
AI, AQ
Signal pre-processing
See current Catalog ST 54.1 for slot numbers
modules (IPs)
Monitoring
module 313

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Modules and slot assignments of the EU 184U

Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163
Module type
IM 312-5

DI, DQ,
AI, AQ
Signal pre-processing
See current catalog ST 54.1 for slot numbers
modules (IPs)
Monitoring
module 313

Modules and slot assignments of the EU 185U

Slot No. 3 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163
Module type
Coordinator 923 C

Communikation
processors (CPs)
IM 314 R

IM 300

IM 310, IM 134
IM 318
IM 317

IM 308

DI, DQ,
AI, AQ
Signal pre-processing
See current catalog ST 54.1 for slot numbers
modules (IPs)
Monitoring
module 313
Slots 19 to 75 are programmer MUX-capable

Modules and slot assignments of the EU 187U

Slot No. 3 19 35 51 67 83 99 115 131 147 163
Module type
IM 312-5

DI, DQ,
AI, AQ
Monitoring
module 313

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Central Controllers and Expansion Units Power Supply Units

4.2.2 Installing the Expansion Units

Like a CC, the EUs are designed for installation in cabinets, in racks and on
walls. To install an expansion unit, therefore, refer to the description for the
CC and Chapter 3.

4.2.3 Technical Specifications of the Expansion Units

S The technical specifications of the expansion units are the same as those
of the central controller except for the following (see Section 4.1.5).
S Weight EU 183U: approx. 14 kg
EU 184U: approx. 13 kg
EU 185U: approx. 14 kg
EU 187U: approx. 11 kg
S Dimensions: EU 187U: 440 x 266 x 225 mm

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4.3 Power Supply Units

Power supply units are part of the S5-135U/155U central controllers and of
the EU 183 and EU 185 expansion units.

4.3.1 Product Overview

The following section provides an overview of power supply types, their

functions, LEDs and controls and their inputs and outputs.

Power Supply Your CC/EU contains one of the following power supply units (PSUs):
Types

Type of PSU Input

Output Voltage Application
(Designation) Voltage
6ES5 955-3LC42 120 V AC 5V/18A DC Central controller
230 V AC 15V/0.5A DC 6ES5 188-3UA12
(selectable) 24V/1A DC Expansion units
6ES5 183-3UA13
6ES5 185-3UA13
6ES5 955-3LF42 120 V AC 5V/40A DC Central controller
230 V AC 15V/2A DC 6ES5 188-3UA22
(selectable) 24V/2.8A DC Expansion units
6ES5 185-3UA33
6ES5 955-3NC42 24 V DC 5V/18A DC Central controller
15V/0.5A DC 6ES5 188-3UA32
24V/1A DC Expansion units
6ES5 183-3UA22
6ES5 185-3UA23
6ES5 955-3NF42 24 V DC 5V/40A DC Central controller
15V/2A DC 6ES5 188-3UA52
24V/2.8A DC Expansion units
6ES5 185-3UA43

The 5 V and 15 V output voltages are regulated; the 24 V output voltage has
coarse stabilization.
All four power supply units have safe electrical separation according to
VDE 0805/EN 60950.

Note
Power supply units are exclusively adapted to operation with CCs/EUs.

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Central Controllers and Expansion Units Power Supply Units

Basic Functions The power supply units offer the following functions:
S System power supply
All the system voltages required for operation of the modules in a CC or
EU are supplied.
S Power supply for backup (in the CC and EU 185):
A lithium battery or an external battery ensure data backup when the
system voltage is switched off or fails.
– The lithium battery remains in the CC/EU and ensures backup, even
during replacement of the power supply unit
– Instead of the lithium battery, an external battery can be connected for
data backup purposes. Situated on the front plate of the power supply
unit are two sockets to connect an external battery.
The rechargeable battery (in the power supply) continues to back up while
either the lithium battery or external battery is being replaced or fails,
ensuring that no data are lost.
S Heat removal
Three independent fans which are individually replaceable during
operation remove the dissipated power. If a fan fails, the supply voltage
for this fan is switched off and the other two fans continue operation at
increased speed.

Monitoring The power supply units contain monitoring functions to detect the following
Functions faults:
S Failure of system voltage
S Failure of output voltages
S Failure of an externally applied 24 V DC load voltage (voltage monitor)
S Fan failure or inadequate air flow
S Lithium battery failure
S Rechargeable battery failure
In this context, a voltage failure is equivalent to a drop of the monitored
voltage below a preset limit (see Section 4.3.6 of the Technical
Specifications).

Signaling The failure of a monitored function is signaled by the power supply units:
Functions
S via LED indicators on the front plate;
S via relays with which signaling circuits can be switched;
S via signals to the S5 bus.

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Inputs and Based on the example of the 6ES5 955-3LF41 power supply unit, the
Outputs following figure shows the arrangement of inputs and outputs on the front
plate of the power supply units:
SIEMENS
Enable Ext.Batt.
AC line 50/60 Hz Voltage Monitor Fan DC 5/15/24V DC 4,5V
Power supply Battery Internal
Output +
1 2 3 4 5 6 7 8 9 10

AC120V4,5A Input Warning Alarm Warning

Fault DC 24V 2,8A
AC230V2,6A DC 24V Ext. max. AC 250 V/ 3A –

Voltage low
EN UH max. AC 250V/3A

Batt.+Fan
3V=40A
6ES5955-3LF42

CAUTION!

5Vo.k.
Voltage

RB low

15Vo.k.
24Vo.k.
MB low
Disconnect

Fan1
Fan2
Fan3
before selector
removing Power
Alarm +
power supply! –
+ – + – Batt. 3,6V/5Ah

Reset
L1 N I
4 5 I 6 7 8 9 10 11 12 13 14 15 16 17 18 Use battery holder
1 2 3 C98100-A1155-B21
only!
Unlock Unlock Unlock
Fan 1 Fan2 Fan3/Res.Batt Replace by
. trained personnel
only!

The following table provides an overview of the labelling and purpose of the
inputs and outputs:

ID Label Element Purpose

A AC 120V 4.5A Screw terminals AC connection and protective conductor
AC 230V 2.6A 1, 2, 3
B EN Screw terminal 4 Enable Power Supply
Control input for power supply
C UH Screw terminal 5 Supply for EN
D Input Screw terminals Voltage Monitor
DC 24V Ext. 6 and 7 Monitors 24 V load voltage for > 16 V
E Fan Warning Screw terminals Indicates failure of a fan
max. 250V/3A 8, 9, 10 (relay)
F Fan Alarm Screw terminals Indicates failure of at least two fans and
max. 250V/3A 11, 12, 13 inadequate air flow; if jumper set
(relay) accordingly, output enable is the second
signal source
G Battery Screw terminals Indicates that lithium battery or
Warning 14, 15, 16 rechargeable battery has dropped below
max. 250V/3A (relay) limit
H 3V = 40A 2 test sockets Current measurement sockets for test
purposes only; no continuous operation;
linearity range 0.5 V/6.6 A to 3 V/40 A
I Output Screw terminals Enable voltage for I/O modules
DC 24V 2.8A 17, 18
J Ext.Batt. 2 input sockets Input for an external 4.5 V backup
DC 4.5V voltage

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Central Controllers and Expansion Units Power Supply Units

LEDs and Controls Apart from the jumpers, the LEDs and controls of the power supply unit are
fitted on the front plate. The following figure shows their locations:

SIEMENS
Enable Ext.Batt.
AC line 50/60 Hz Voltage Monitor Fan DC 5/15/24V DC 4,5V
Power supply Battery Internal
Output +
1 2 3 4 5 6 7 8 9 10

AC120V4,5A Input Warning Alarm Warning

Fault max. AC 250 V/ 3A DC 24V 2,8A
AC230V2,6A DC 24V Ext. –

Voltage low
EN UH max. AC 250V/3A

Batt.+Fan
3V=40A
6ES5955-3LF42

CAUTION!

5Vo.k.
Voltage

RB low

15Vo.k.
24Vo.k.
MB low
Disconnect

Fan1
Fan2
Fan3
before selector
removing Power
Alarm +
power supply! –
+ – + – Batt. 3,6V/5Ah

Reset
L1 N I
4 5 I 6 7 8 9 10 11 12 13 14 15 16 17 18 Use battery holder
1 2 3 C98100-A1155-B21
only!
Unlock Unlock Unlock
Fan 1 Fan2 Fan3/Res.Batt Replace by
. trained personnel
only!

D F I K M
A B C E G H J L

The labelling and purpose of the LEDs and controls are given in the
following table:

ID Label Element Purpose

A Voltage Switch Voltage selector switch:
selector 1) choice of 120 V or 230 V
B Power Switch Standby On/Off switch (not system
On/Off switch)
C Voltage low Red LED Low voltage at load voltage monitor input
D Fan 1 Red LED Failure of Fan 1
E Fan 2 Red LED Failure of Fan 2
F Fan 3 Red LED Failure of Fan 3
G Alarm Red LED Indicates failure of at least two fans of
insufficient air flow
H MB low Yellow LED Lithium battery/external battery voltage
below preset limit (3V)
I RB low Yellow LED Rechargeable battery voltage below preset
limit (3V)
J Reset Batt.+Fan Pushbutton Reset of LEDs D, E, F, G, H, I when fault
cleared
K 5V o.k. Green LED Lights up to indicate output voltage
within permissible range
L 15V o.k. Green LED Lights up to indicate output voltage
within permissible range
M 24V o.k. Green LED Lights up to indicate output voltage
within permissible range
1) Only on the 6ES5 955-3LC42 and 6ES5 955-3LF42

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4.3.2 Setting and Connecting the Power Supply Unit

Before starting up your power supply unit, you must carry out certain steps
according to your requirements with respect to power supply behavior in the
event of a fault.
Power supply units are delivered in the following state:
S Fitted in the CC or EU frame which you ordered
S With preset jumpers
S AC line voltage set to 230 V (-3LC42, -3LF42)
If you wish to retain this setting, you can skip Steps 2 to 4 and 9.
If you do not wish to fit a filter subdrawer, skip step 8.

Step Action
1 Check the setting and cabling
2 Remove the power supply unit If required
3 Set the jumpers If required
4 Fit the power supply unit If required
5 Wire the power supply unit to the installation (including
fitting an isolating device to disconnect the AC line
voltage)
6 Fit the lithium battery
7 Remove the right-hand fan and connect the rechargeable
battery
8 Fit the filter subdrawer If required
9 Set the voltage selector switch If required
10 Switch the PSU on for the first time

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Central Controllers and Expansion Units Power Supply Units

Brief Instructions The following table shows the procedure for placing the power supply unit
for Startup (PSU) in operation without changing the jumper setting:

Stage Description
1 Fit the PLC, allowing for clearances for access in the event of repairs
and for adequate ventilation. Observe chassis grounding.
2 Fit the lithium battery (if available) in the battery compartment on the
right front of the power supply unit (ensure correct polarity).
Hinweis: Die Lithium-Batterie müssen Sie getrennt bestellen (siehe
Bestellhinweise).
3 Remove the right-hand fan subassembly, plug in the red positive lead of
its rechargeable battery and reinsert the fan.
4 Check that the voltage selector switch is set to your desired voltage.
5 Connect the 24 V load voltage leads to the “Voltage Monitor” terminals.
6 When connecting the AC leads, fit an isolating device to isolate the
power supply unit from the AC line voltage.
7 Connect the primary voltage leads and the protective conductor.
8 Switch on the primary voltage and the 24 V load voltage.
9 Use the “Power” switch to switch on the power supply unit.
10 If the required basic load is in circuit, no red LED lights up and the
power supply unit is operational.

All activities relating to startup of the power supply units are described in
detail on the following pages.

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Establishing the The power supply unit is delivered with the settings shown in bold print in
Jumper Settings the following table.
Mark your chosen settings in the right-hand column and use this chart for the
subsequent implementation.

Function Selection Jumper Setting Application/Note (X)

Battery monitor
– switched on for MM - NN closed Redundant backup
rechargeable battery and battery MA - NA closed
– switched on for battery and MM - NN closed If, for example, no redundance is
off for rechargeable battery MA - NA open required in backup, i.e. the rechargeable
battery is missing
– switched off MM - NN open For example, monitoring is not needed
MA - NA irrelevant for EU without backup
Reaction of battery monitoring
following battery failure
– /BAU signal active following MB - NB open
return of line voltage
– /BAU signal active following MB - NB closed The possibility of evaluating the battery
return of line voltage and during monitoring during operation is
operation dependent on the CPU in use
After failure of more than one fan or
inadequate air flow
– PSU shutdown F-R closed
– No PSU shutdown F-R open Caution: To prevent overheating of
modules, the PSU must be shut down
after 60 s at the latest (for example, by
time relay)
Voltage monitor
– switched off BA-EX closed Monitoring of load voltage input
switched off
– switched on BA-EX open Monitoring of load voltage input
switched on
Relay alarm Fault message
g initiated by y fan
– driven by fan monitor and BB-AA closed f il /
failure/output iinhibit
hibi active;
i can bbe
output inhibit signaled to control room, for example.

– driven only by fan monitor BB-AA open Fault message initiated by fan failure;
can be signaled to control room, for
example.

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Central Controllers and Expansion Units Power Supply Units

Function Selection Jumper Setting Application/Note (X)

Mains buffering
FX-VA closed A stored energy time of 5 to 10 ms is
6-22 closed guaranteed in the event of a power
failure.
The stored energy time is dependent on
the input voltage and the load.
FX-VA closed A stored energy time of 20 to 30 ms is
6-22 open guaranteed in the event of a power
failure.
The stored energy time is not dependent
on the input voltage and the load.
FX-VA open A stored energy time of w 20 ms is
6-22 irrelevant guaranteed in the event of a power
failure.
The stored energy time is dependent on
the input voltage and the load.

If your selection is the same as all the settings marked in bold print, you need
not change the jumper settings.

Establishing the Wiring of the power supply unit must be planned within the scope of wiring
Wiring of the entire control system. The information required for the purpose and
decision-making aids, for example, for local or central grounding, can be
found in Chapter 3: Installation Guidelines.

Establishing the Three relay outputs allow you to install additional external signaling circuits
Signaling Circuits for fault states, for example, to connect a cabinet lamp or horn.
The following table contains the information required on the relay states:

Relay

(Normal Operational State) (Fault State/Idle State)

Warning All fans are in order. One or more fans have failed.

Alarm Adequate air flow, at least two fans are running. Inadequate air flow or at least two fans have
failed.

BatteryWarn Lithium battery and rechargeable battery are in Lithium battery or rechargeable battery has failed
ing order (Ubatt ext not connected). (no Ubatt ext ).

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Setting up the The following applies to input EN (Enable Power Supply):

Control Input for
S Input EN monitors the voltage for < 3.6 V; it enables the output voltage at
the Power Supply
3.2 V.
S If two or more units are to be controlled jointly, connect input EN of the
PSU in the central controller to the EN inputs of the PSUs in the
expansion unit. Connect the auxiliary voltage UH, for example, to these
inputs. In the event of failure of the PSU in the central controller, all units
will then be switched off with the appropriate jumper settings.
Not more than 7 EN inputs may be connected to one UH output (front
terminal).

Establishing the The following applies to selecting the cables for the terminals:
Cables

Terminals Cabling Max. Permissible Conductor Cross-Sections

Power supply
AC line Phase L1 4 mm2 solid or 2.5 mm2 flexible

Neutral N 4 mm2 solid or 2.5 mm2 flexible

Protective cond. PE 4 mm2 solid or 2.5 mm2 flexible

DC line Positive L+ 4 mm2 solid or 2.5 mm2 flexible

Chassis 0 V M 4 mm2 solid or 2.5 mm2 flexible

Protective cond. PE 4 mm2 solid or 2.5 mm2 flexible

Load voltage input (Voltage 24 V input (may be omitted if jumper 4 mm2 solid or 2.5 mm2 flexible
monitor, Ext. 24 V DC) BA-EX is closed)
Enable power supply Set jumper from EN-UH or apply 4 mm2 solid or 2.5 mm2 flexible
w 3.2 V voltage at EN, with respect
to output chassis ground
Relay terminals, also 4 mm2 solid or 2.5 mm2 flexible
suitable to 230 V AC / 3 A
Monitor output for 24 V 4 mm2 solid or 2.5 mm2 flexible

Note
A voltage of more than 50 V must not develop between the output voltages
and the protective conductor potential.

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Central Controllers and Expansion Units Power Supply Units

Removing the
Power Supply Unit

When to Remove You must remove the power supply unit if you:
the PSU
S change the jumper settings
S send the power supply unit in for repair.

Caution
! Power supply units may only be removed when power is switched off.
If 230 V I/O modules are fitted, you must ensure before removing the power
supply unit that the subrack is grounded when the PSU is removed, or the
230 V supply for these modules is switched off.

When the power supply unit is removed, the connection between backup
battery and backplane bus remains; this ensures backup of the user program.

How to Remove Proceed according to the following steps to remove the power supply unit:
the PSU

Step Action

1 Switch the Power switch off

(standby On/Off).

2 Disconnect the power supply unit form the AC line voltage.

3 Detach the connections of all leads from the front terminals.

4 Important
p
Before pulling out the PSU, wait at least 8 minutes after switching off the
power so that the electrolytic capacitors can discharge.
!
5 Slacken the fixing screws on the left and right of the PSU.

6 Pull the PSU out.

There are grips to pull it out under the unlock fan openings.

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Setting the
Jumpers

Locations of The jumper locations are given in the following figure:

Jumpers

NB MB
F
MA NA
R
NN MM

BB
BB AA
AA

6 FX EX
EX BA

22 VA

Setting the To change the jumper settings, it is best to use pincers or a fine screwdriver.
Jumpers
Proceed as follows to change the jumper settings:

IF... THEN...
You wish to open the jumper, press the flexible jumper wire down and
pull it out.
You wish to close the jumper, press the flexible jumper wire down and
insert it.

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Central Controllers and Expansion Units Power Supply Units

Fitting the Power

Supply Unit

Caution
! For safety reasons, the power supply unit may only be operated in the
housing provided for the purpose.
The protective conductor must always be connected.

How to Fit the PSU After carrying out setting, installation and repair work, proceed according to
the following steps to refit the power supply unit in the frame:

Step Action
1 Push the PSU into the guide rails until it locks in place. You can use one
hand to support the PSU from below; this facilitates fitting in the guide
rails.
2 Secure the PSU with the fixing screws on the left and right of the unit.
Caution
Since the fixing screws also provide the protective conductor connection to
! the subrack, they must be tightened before the power cable is connected.

Wiring the Power

Supply Unit

How to Wire Wiring of the PSU is carried out within the scope of overall wiring for your
the PSU controller, according to your requirements and the section entitled
“Establishing the settings and cabling.”
Terminals with dangerous touch-voltages must be covered with caps. Use
only the original self-tapping screws provided when you fit the caps for the
first time.

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Starting up with a
Lithium Battery

When do you Whether or not you require a lithium battery depends on what type of backup
Require a Lithium you require for your system. The following table will help you to decide.
Battery?
IF... THEN...
You require long backup times and do not want to you need a lithium battery.
supply an external backup voltage,
You require redundant backup and do not want to you need a lithium battery.
supply an external backup voltage,
Short backup times are sufficient, you do not need a lithium
battery.
You do not require redundant backup, you do not need a lithium
battery.

The lithium battery must be ordered separately (see Ordering Information).

Notes Relating to The backup battery (type C) contains lithium (more than 0.5 g) and is
the Lithium Battery delivered separately from the power supply unit, because of special shipping
regulations.
Depending on the manufacturer, the battery’s plus pole may have a protective
cover. You must remove this cover before you place the battery in the battery
compartment.

Caution
! Improper replacement of the battery can result in the danger of explosion.
If should only be replaced by the same type or an equivalent one
recommended by the manufacturer. Used batteries should be disposed of
according to the manufacturer’s instructions.

The backup battery must be fitted before the programmable controller is

started up. Without a backup voltage, the PLC will remain in the Stop state
after system voltage is switched on.
Only use battery compartments marked -A1155-B21 (red label).
How to Fit the Fit the lithium battery in the following steps:
Lithium Battery
Step Action
1 Slide the battery compartment cover (A) downwards.

2 Pull the battery compartment (B) out.

3 Insert the lithium battery in the battery compartment.

Important: Ensure correct polarity.
4 Slide the battery compartment in.

5 Close the cover.

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Central Controllers and Expansion Units Power Supply Units

Battery Compartment (B)

*

Cover (A)

Warning
! Risk of danger to persons and property, danger of giving off harmful
substances.
If handled incorrectly, a lithium battery can explode. If disposed of
incorrectly, old lithium batteries can release harmful substances. You must
therefore observe the following guidelines:
S Do not throw new or discharged batteries onto a fire and do not solder
onto the body of the cell (max. temperature 100 °C (212 5F)). Do not
recharge them. Order your replacement battery from Siemens only (for
order number see ordering instructions). This ensures that you only use a
short-circuit-protected type.
S The lithium battery is subject to regulations for hazardous materials. You
should observe these regulations when you ship the battery, for example,
by using the original packaging.
Used batteries should be returned to the manufacturer or a recycling
station if possible or disposed of as hazardous waste. The guidelines for
transporting hazardous materials should be observed.

Starting Up If you want to start up one of the central controllers or expansion units
without a Lithium without a battery, you can do either of the following:
Battery
S You can connect only the rechargeable battery, or
S You can supply an external backup voltage.

Supplying an Apply a backup voltage of 4.5 V DC via the input sockets labelled “Ext.Batt.
External Backup DC 4.5 V.” The input sockets are situated on the front panel of the power
Voltage supply. Ensure that you have the correct polarity.

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Removing the
Right-Hand Fan
and Connecting
the Rechargeable
Battery
Location of Fans The three fans are situated under the power supply unit. The rechargeable
and Rechargeable battery is fitted in the right-hand fan subassembly.
Battery
How to Connect Proceed according to the following steps:
the Rechargeable
Battery Step Action Result
1 Place one hand under the right-hand When the screwdriver is pulled
fan; with the other hand, insert a out, the snap hook is released. By
screwdriver (DIN 5265, blade width pulling on the round hole on the
3.5-6.5 mm) into the right-hand unlock underside of the fan subassembly
fan opening. it swings down and can be pulled
out.
2 Connect the red connecting cable to the The battery is connected.
battery.
3 Insert the fan subassembly in the The fan subassembly locks in
housing with the tab situated at the rear, place.
and swivel it up.

Releasing the Fan The following figure shows how to release the fan lock:
Lock

SIEMENS
3 4 5 6 7 8 910

Batt.3,6V/5Ah
Use battery holder
1 2

C98100-A1155-B21
only!
Unlock Unlock
Unlockfan Replace by
fan fan
trained personnel
only!

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Fitting the Filter

Subdrawer

Option The filter subdrawer with fixing grid, two plug-in guide rails and the
corresponding filter mats are available as an option (see the ordering
instructions for the order numbers).

Where to Fit the To insert a filter, you must secure the filter subdrawer to the lower side of the
Filter Subdrawer power supply unit housing.

How to Fit the Proceed as follows:

Filter Subdrawer

Step Action
1 Install the guide rails in such a way that the round tabs fit into the
corresponding openings on the lower side of the PSU.
2 Insert a filter mat in the filter subdrawer and secure it with the enclosed
fixing grid.
3 Position the filter subdrawer in the guide rails, push it back and swivel it up
so that it locks in place.

Setting the Voltage

Selector Switch

How to Set the On the AC power supply units, the voltage selector switch is situated on the
Voltage Selector front plate and marked Voltage Selector. You can select a voltage of 120 V or
Switch 230 V. The factory setting is 230 V.
Set the voltage according to your requirements

Step Action
1 Disconnect the power supply unit from the line voltage.

2 Use a screwdriver to remove the transparent cover.

3 Set the voltage selector switch to your required voltage.

4 Refit the transparent cover.

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Switching on the
Power Supply Unit
for the First Time

Caution
! If you have set the voltage selector switch to 120 V, but the actual voltage
value is 230 V, the power supply unit may be damaged when line voltage is
switched on.

How to Switch On When you have made all the settings, switch the power supply unit on as
the Power Supply follows:
Unit

Step Action Result

1 Switch the power supply unit
on with the Power switch.
2 Switch the system voltage on. If the required basic load (see Section
4.4.6, Technical Specifications) is in
circuit, the power supply unit will start.
The green LEDs “5V o.k.”
“15V o.k.”
“24V o.k.” light up.
The fans run.

After a maximum of 6 minutes, the rechargeable battery has been charged

sufficiently for you to be able to start up the central controller or the
expansion unit.
The charge time for the rechargeable battery can be up to 46 hours,
depending on how low the battery was. Note that during this time, backup
using the rechargeable battery is restricted.
Once the rechargeable battery is fully charged, the following load-dependent
backup times apply:

Ibackup mA 0.25 1 2 3 4 5
Backup time in weeks 18.8 6.3 3.4 2.3 1.7 1.4

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4.3.3 Fault Indications/Fault Diagnostics

This section explains where and how faults are indicated, and how to
interpret the LEDs.

Where are Faults Faults of the system power supply, load power supply, battery supply and
Indicated? fans are indicated by LEDs on the front plate of the power supply unit.

How are Faults When all monitoring circuits are switched on (jumper settings), the following
Indicated and indications can appear:
Interpreted?

LED Indication Cause Action

“Voltage low” LED lights The voltage at the voltage monitor is
up. less than 14 V.
“MB low” LED lights up. The lithium battery has failed or the Replace backup
battery compartment is faulty. battery or battery
(Precondition: no external bty voltage compartment
is present).
“RB low” LED lights up. The rechargeable battery has failed. Replace
rechargeable
battery
“Fan 1” LED lights up. The speed of Fan 1 has dropped or Replace fan
Fan 1 has stopped.
“Fan 2” LED lights up. The speed of Fan 2 has dropped or Replace fan
Fan 2 has stopped.
“Fan 3” LED lights up. The speed of Fan 3 has dropped or Replace fan
Fan 3 has stopped.
At least 2 “Fan” LEDs light At least 2 fans have failed. Replace fan
up as well as the “Alarm”
LED.
All 3 “Fan” LEDs flash and The air flow is inadequate. Replace filter
the “Alarm” LED lights up. mat

The fan error is indicated approximately 6 s after the monitoring circuits are
switched on or 6 s after a reset is performed.

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Other Faults Other faults can be indicated by the green LEDs on the front plate going off.

LEDs Possible Cause Action

Green LEDs go off The Enable jumper is Check the jumper.
and the power out of place
supply
l ffails.
il
Latching Off-switching Switch the supply voltage off and on
by overvoltage at again. If this does not clear the fault,
output there is an internal fault.
Internal fault in the Send in the PSU for repair.
PSU
Base load too low Increase the base load

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Fans and Fan The following table contains several examples.

Monitoring
Requirement:
Enable EN present, jumper F - R closed

Causes LED Indication Relay Reaction

Air filter/ Fan Fan
Fans air flow Fan1 to Fan3 Alarm Warning Alarm

All fans in In order All LEDs dark Dark - – 5 V, 15 V, 24 V present,

order fans 1 to 3 running

One fan In order Corresponding Dark Active – 5 V, 15 V, 24 V present,

failed LED lit faulty fan switched off, the other two
fans running at increased speed

Two fans In order Corresponding Lit Active Active Power supply switches off
failed LEDs lit

All fans in Dirty/halved All LEDs Lit – Active Power supply switches off
order flashing

Requirement:
Enable EN present, jumper F - R open

Causes LED Indication Relay Reaction

Air filter/ Fan Fan
Fans air flow Fan1 to Fan3 Alarm Warning Alarm

All fans in In order All LEDs dark Dark – – 5 V, 15 V, 24 V present,

order fans 1 to 3 running

One fan In order Corresponding Dark Active – 5 V, 15 V, 24 V present,

failed LED lit faulty fan switched off, the other two
fans running at increased speed

Two fans In order Corresponding Lit Active Active 5 V, 15 V, 24 V present,

failed LEDs lit faulty fans switched off, one fan
running at increased speed

All fans in Dirty/halved All LEDs Lit – Active 5 V, 15 V, 24 V present,

order flashing fans 1 to 3 running

Note:
When the jumper “BB - AA” is closed the relay “Fan Alarm” is also
activated by the “output inhibit” signal (BASP via BASPA).

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Rechargeable The following table contains several examples.

Battery and
Battery Monitoring

Causes Relay LED Indication

Rechargeable Battery or external Battery
Battery supply Jumpers Warning RB MB /BAU

In Order In Order MA-NA closed – Dark Dark Inactive

MM-NN closed
MB-NB open

Faulty In Order MA-NA closed Active Lit Dark Inactive

MM-NN closed
MB-NB open

In Order Faulty MA-NA closed Active Dark Lit Inactive

MM-NN closed
MB-NB open

Faulty Faulty MA-NA offen Active Lit Lit Active

MM-NN closed
MB-NB open

Not monitored In Order MA-NA open – Dark Dark Inactive

MM-NN closed
MB-NB open

Not monitored Faulty MA-NA open Active Dark Lit Active

MM-NN closed
MB-NB open

Not monitored Not monitored MA-NA irrelevant – Dark Dark Inactive

MM-NN open
MB-NB open

Note:
Jumper MB - NB open: when line voltage returns the signal /BAU (battery
failure) is activated by a corresponding error.
Jumper MB - NB closed: when line voltage returns and during operation the
signal /BAU (battery failure) is activated by a corresponding error.

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4.3.4 Maintenance and Repairs

Lithium Battery The lithium battery should be replaced when a battery failure is indicated.
The backup times of the lithium battery are given in the following table:

Ibackup mA 0.25 1 2 3 4 5
New battery,
backup time in weeks 81.5 27.4 14.5 9.9 7.5 6.0
Battery 3 years old,
backup time in weeks 64.2 21.6 11.5 7.8 5.9 4.8

Fans If a fan fails, replace it as quickly as possible. The behavior of the power
supply in the event of fan failure is described in Section 4.3.5.

Rechargeable The rechargeable battery should be replaced at regular intervals (service life
Battery of 6 years at 40 oC (104 oF) ambient temperature). With a failed power
supply and failed battery, the backup times of the rechargeable battery are as
follows:

Ibackup mA 0.25 1 2 3 4 5
Backup time in weeks 18.8 6.3 3.4 2.3 1.7 1.4

Filter Mat The replacement intervals for the filter mat (with the air filter option) depend
on the ambient conditions under which the power supply unit is in operation.

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Replacing the The lithium battery can be replaced without memory loss if the PSU is
Lithium Battery switched on, the rechargeable battery is in order or you apply an external
(4.5 V) voltage to the “Ext.Batt.” terminals.

How to Replace Replace the lithium battery in the following steps:

the Lithium Battery

Step Action
1 Slide the battery compartment cover down.

2 Pull the battery compartment out.

3 Remove the old lithium battery from the battery compartment by inserting a
screwdriver through a hole in the compartment base to push the battery
upwards.
4 Insert the new lithium battery in the battery compartment
Important:
Ensure correct polarity.
5 Slide the battery compartment in.

6 Close the cover.

7 Press the Reset button.

Result (only with PSU on):
– “MB low” LED goes off.
– Contacts 14 and 15 of the
Battery Warning relay are bridged.

Replacing a Fan

Location of the The three fans are situated at the bottom of the power supply unit and can be
Fans individually replaced during operation.

Before If you operate your power supply with a filter, you must first release the filter
Replacement subdrawer and pull it out before you can replace a fan (see Section entitled
“Replacing the Filter Mat”).

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How to Replace a The following steps are necessary to replace a fan:

Fan

Step Action Result

1 Place one hand under the fan When the screwdriver is pulled
you wish to replace, and use the out, the snap hook is released.
other hand to insert a By pulling on the round hole on
screwdriver (DIN 5265, blade the underside of the fan sub-
width 3.5-6.5 mm) into the assembly it swings down and
unlock fan opening. can be pulled out.
2 – If this is not the right-hand fan subassembly, go directly to
Step 3 after removing the old fan subassembly.
– If this is the right-hand fan subassembly, proceed as follows:
Step Action
2a Unscrew the rechargeable bty from below.
2b Disconnect the connecting cable.
2c Insert the rechargeable bty in the new fan
subassembly (see section entitled “Replacing the
rechargeable battery”) and reconnect the
connecting cable.
Important:
Ensure correct polarity.

3 Insert the new fan subassembly The fan subassembly locks in

with the tab at the rear into the place.
housing, and swivel it up.

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Releasing the Fan The following figure shows how to release the fan lock:
Lock

SIEMENS
3 4 5 6 7 8 910

Batt.3,6V/5Ah
Use battery holder
1 2

C98100-A1155-B21
only!
Unlock Unlock
Unlockfan Replace by
fan fan
trained personnel
only!

After Replacement After replacement, press the Reset button, the monitor will become active 6
secs after the Reset button is pressed.

IF... THEN...
the relevant “Fan” LED goes off, the fan is correctly installed.
the relevant “Fan” LED does not go off, the fan is incorrectly installed. Make a
step-by-step check to ensure correct
replacement.
the relevant “Fan” LED goes off but the another fan has failed and another “Fan”
“Warning” relay does not pick up, LED lights up. Replace the second fan
also.

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Replacing the
Rechargeable
Battery

Location of the The rechargeable battery is situated in the right-hand fan subassembly.
Rechargeable
Battery
Caution
! Do not place the rechargeable battery in contact with fire or heat and do not
short-circuit it.
The rechargeable battery must not be destroyed or disassembled!
Nickel-cadmium batteries contain an alkali electrolyte which can harm the
skin and damage clothing.
If your skin or your eyes make contact with the electrolyte, rinse
immediately with clean water and consult a doctor.

Before If you operate your power supply with a filter, you must first release the filter
Replacement subdrawer and pull it out before dismantling the right-hand fan and replacing
the rechargeable battery (see section entitled “Replacing the Filter Mat.”

How to Replace The rechargeable battery can be replaced during operation. Proceed as
the Rechargeable follows:
Battery

Step Action
1 Insert a screwdriver (DIN 5265, blade width 3.5-6.5 mm) into the
right-hand unlock fan opening.
2 Swing the right-hand fan subassembly out (by placing your finger in the
round opening on the underside at the front and pulling downwards).
Result: “Fan 3” LED indicates failure of the right-hand fan and
the other two fans operate at increased speed.
3 Slacken the screws on the bottom of the fan subassembly and pull out the
rechargeable battery.
4 Disconnect the connecting cable of the rechargeable battery.

5 Connect the cable to the new rechargeable battery.

Important:
Ensure correct polarity (red terminal on plus, black terminal on minus, see
figure “Replacing the rechargeable battery in the fan subassembly”).
6 Insert the new rechargeable battery pack in the left-front part of the fan
subassembly (plus pole to the right). Ensure that the black connecting cable
is lying on the floor of the battery compartment when you insert the battery.
Secure it with the screws from below.
7 Insert the fan subassembly with the tab at the rear into the housing and
swivel it up until it locks in place.
8 Press the Reset button.
With a fully discharged battery, the message can only be acknowledged
after at least 6 minutes.

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After Replacement The recharging time for the battery may be up to 46 hours, depending on its
state of charge. Please note that backup via the battery is only possible within
limits during this time.
If the rechargeable battery does not work after replacement, there may be the
following faults:

IF... THEN...
“RB low” LED does not go off after the rechargeable battery is incorrectly connected
6 minutes, or faulty or the charging circuit in the PSU is
faulty.
“RB low” LED goes off but the the battery has failed and the yellow “MB low”
relay does not pick up, LED lights up or the battery compartment is
faulty.

Replacing the
Rechargeable
Battery in the Fan
Subassembly

Fan
red sub-
assembly
Rechargeable Hole
battery
black

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Replacing the
Filter Mat

Inadequate Air If the filter mat is clogged and the power supply unit no longer receives
Flow sufficient air, the “Alarm” LED lights up, LEDs for “Fan 1,” “Fan 2” and
“Fan 3” flash and the “Alarm” relay picks up. The fault can be cleared by
replacing the filter mat (see ordering information for the order number).

How to Replace Correct the fault in the following steps:

the Filter Mat

Step Action
1 Release the filter subdrawer.

2 Swivel the filter subdrawer downwards and pull it forwards and out.

3 Remove the old filter mat.

4 Insert a new filter mat in the filter subdrawer.

5 Place the distance grid on the new filter mat.

6 Insert the filter subdrawer in the guide rails, slide it back and swivel it up so
that it locks in place.
7 Press the Reset button.
Result: – Fault LEDs for “Alarm,” “Fan 1,” “Fan 2” and
“Fan 3” go off.
– Contacts 11 and 12 are closed in the “Alarm” relay.

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Replacing a Power If it should be necessary to replace the power supply unit in a system during
Supply Unit commissioning or during operation, we recommend you proceed as follows:
Requirement:
Redundant backup, “Spare power supply” without rechargeable battery
(standard spare part).
The lithium battery in the rack is in full working order.

Step Action
1 Disconnect the faulty power supply from the system voltage and remove it.

2 Set the jumpers on the spare power supply according to your needs.

3 Push the spare power supply into the rack and screw it in place.

4 Remove the right-hand fan subassembly from the defective power supply.

5 Remove the rechargeable battery from the fan sub- assembly.

6 Replace the right-hand fan subassembly in the defective power supply.

7 Remove the right-hand fan subassembly from the spare power supply.

8 Connect up the spare power supply.

9 Switch on the system voltage and the power supply in any order.
Reaction:
– The system runs up
– Both fans run at an increased speed
– The LEDs “Fan 3” and “RB low” light up.
10 Insert the rechargeable battery in the fan subassembly and connect it up.

11 Reinsert the right-hand fan subassembly.

12 After the system has run up, press the reset switch on the spare power
supply.
Reaction:
– The LED “Fan 3” goes out
– The fans run at their normal speed again
– The LED “RB low” shows the charge state of the rechargeable battery.

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Requirement:
Redundant backup, “Spare power supply” with rechargeable battery. The
lithium battery in the rack in in full working order.

Step Action
1 Disconnect the faulty power supply from the system voltage and remove it.

2 Set the jumpers on the spare power supply according to your needs.

3 Push the spare power supply into the rack and screw it in place.

4 Remove the right-hand fan subassembly from the spare power supply.

5 Connect up the replacement power supply.

6 Switch on the system voltage and the power supply in any order.
Reaction:
– The system runs up
– Both fans run at an increased speed
– The LEDs “Fan 3” and “RB low” light up.
7 Reinsert the right-hand fan subassembly.

8 After the system has run up, press the reset switch on the spare power
supply.
Reaction:
– The LED “Fan 3” goes out
– The fans run at their normal speed again
– The LED “RB low” shows the battery charge state.

Requirement:
No backup

Step Action
1 Disconnect the faulty power supply from the system voltage and remove it.

2 Set the jumpers on the spare power supply according to your needs.

3 Push the spare power supply into the rack and screw it in place.

4 Connect up the spare power supply.

5 Switch on the system voltage and the power supply in any order.
Reaction:
– The system runs up.

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4.3.5 Description of Internal Sequences in the Power Supply Unit

Given in this section is background information on internal sequences in the

power supply unit.

Behavior Upon
Failure of the
System Supply

When the System The behavior of the power supply unit after a system supply failure is
Supply Fails governed by the duration of the failure:

IF the system supply failure... THEN...

is shorter than the stored energy time the PSU output voltages are within tolerance
for power failure ranges; no indication appears on the front plate
and no signal is sent to the S5 bus.
is longer than the stored energy time a data save routine is initiated on the
for power failure CPU/CPUs and an output inhibit is issued.

Redundant Data To ensure data backup, your CC and EU 185 are provided with a lithium
Backup battery, and the power supply unit with a rechargeable battery.
In the event of system supply failure or switch-off, data backup is provided
by the lithium battery and, in the event of battery failure, by the rechargeable
battery which is permanently recharged to remain constantly operative.
After replacement of a defective lithium battery, the new one resumes data
backup and you must acknowledge the fault LED on the front panel.
As the rechargeable battery is withdrawn during the replacement of a power
supply unit, data backup is temporarily performed by the lithium battery.

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Behavior Upon
Failure of Fans

Failure Indication If a fan fails (its speed decreases) a fault is indicated, i.e. the red LED
assigned to the fan lights up:
“Fan 1” LED = left fan failed
“Fan 2” LED = middle fan failed
“Fan 3” LED = right fan failed

If a Fan Fails If a fan fails, the following takes place:

Stage Description
1 A fan fails.
Result: – The red LED assigned to the fan lights up.
2 Contacts 9 and 10 in the “Warning” relay are closed.
3 The faulty fan is switched off.
4 The other two fans operate at increased voltage and an audibly higher
speed.

If Another Fan If another fan fails, the following takes place:

Fails
Stage Description
5 Another fan fails.
Result: – The red LED assigned to the fan lights up.
6 Contacts 12 and 13 in the “Alarm” relay are closed.
Result: – “Alarm” LED lights up.
– Two “Fan”-red LEDs light up.
7 A data save routine is started and, with the appropriate jumper setting, an
output inhibit is issued.
8 The power supply switches off, with the appropriate jumper setting.

Resetting the Fault When the fault has been cleared (faulty fan replaced, filter mat replaced),
Message you can reset the fault messages by pressing the Reset button.

Caution
! You can suppress the shutdown of the power supply by opening jumper F-R.
In this case, you must ensure that the power supply is switched off after 60
secs at the latest. This can be achieved with a time relay, for example. This
prevents modules from overheating and being damaged.

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4.3.6 Technical Specifications of the Power Supply Units

Important for the USA and Canada

The following approval has been obtained:
UL-Recognition-Mark (for USA)
Underwriters Laboratories (UL) to
Standard UL 508, Report E 143289
CUL-Recognition-Mark (for Canada) to
Canadian National Standard C 22.2, No. 142, Report E 143289

6ES5 955-3LC42 6ES5 955-3LF42

Safety Specifications The power supply units comply with safety specifications VDE 0805 /
EN 60950 / IEC 950 / VDE 0160 and VDE 0106 Part 101.
Shock protection only insured in the installed state
Data for EMC in the installed state see technical specifications of the S5-135U/155U CC
Safe isolation is ensured.
Input
Rated input voltage 120 V (93-132 V) AC 120 V (93-132 V) AC
230 V (187-264 V) AC 230 V (187-264 V) AC
Rated input frequency 50/60 Hz (47-63 Hz) 50/60 Hz (47-63 Hz)
Input current Ii/p
at rated loed and rated Vi/p = 120V 2.5 Arms 4.5 Arms
= 230V 1.5 Arms 2.6 Arms
Peak inrush current I i/p max 26 A for 2 s, otherwise < 5 A 25 A for 2 ms
(repetition rate 100 secs) (repetition rate 100 secs)
I@t value of inrush current 4 A@s 5.2 A@s
Efficiency at rated load (with fans) and Vi/p > 0.63 > 0.68
¢ 230/120 V AC
Max. heat dissipation at rated load at 80 W 147 W
Vo/p1, Vo/p2, Vo/p3 (with fans)
Efficiency at rated load (without fans) and 0.70 0.71
Vi/p ¢ 230/120 V AC
Max. heat dissipation (without fans) 53 W 123 W
Stored energy time during power failure at >20 ms >20 ms
rated load and 20 ms 20 ms
Vi/p ¢ 187/93 V AC (adjustable) 5 ms 5 ms
Input fuse Wickmann G 19343-T4A/250V, Wickmann G 19340-8A/250V,
500 A@s 200 A@s
External battery supply 4.5 V 4.5 V

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6ES5 955-3LC42 6ES5 955-3LF42

Output 1
Rated output voltage Vo/pN1 5.1 V DC $ 1.2% 5.1 V DC $ 1.2%
Rated output current Io/pN1 18 A 40 A
Basic load 0.5 A 1.6 A (typical)
3.1 A (worst case)
Ripple v 1% of Vo/p1 v 1% of Vo/p1
Spikes v 4% of Vo/p1 v 4% of Vo/p1
Static voltage tolerances
– at 95% load variation v 0.005% of Vo/p1 v 0.08% of Vo/p1
– at 15% variation of Vi/p v 0.0005% of Vo/p1 v 0.0005% of Vo/p1
– at temperature variation / 1K v 0.02% of Vo/p1 v 0.02% of Vo/p1
Dynamic voltage tolerances
at load surge 50% to 100% Ii/oN
– overshoot v 3% of Vo/p1 v 3% of Vo/p1
– settling time v 5 ms v 5 ms
Maximum permitted capacity 100 mF 750 mF
Protection and monitoring
Voltage Monitor Monitors voltage for Monitors voltage for
< 14 V and > 16 V < 14 V and > 16 V
Overvoltage shutdown Vo/p1 6V $ 5% 6V $ 5%
Undervoltage signal Vo/p1 4.75 V + 3% 4.75 V + 3%
Current limiting for overload 1.0 to 1.2 Io/pN1 1.0 to 1.2 Io/pN1
Test sockets for Io/p1 On front plate (3 V ¢ 18 A) On front plate (3 V ¢ 40 A)
linearity range: linearity range:
0.5 V/2.8 A to 3 V/18 A 0.5 V/6.6 A bis 3 V/40 A
Signaling section Signals for SIMATIC S5, Signals for SIMATIC S5,
relays “Fan Warning, Fan Alarm, relays “Fan Warning, Fan Alarm,
Warning” 250V/3A Warning” 250V/3A
Green LED: “5V o.k.” for Vo/p1 LED lights up if LED lights up if
4.75 V < Vo/p1 4.75 V < Vo/p1
Output 2
Rated output voltage Vo/pN2 DC 24 V (+ 25%, -12.5%) DC 24 V (+ 25%, -12.5%)
Rated output current Io/pN2 1A 2.8 A
Total current X2 and front terminals 1 A max. 2.8 A max.
Ripple v 1% of Vo/p2 v 1% of Vo/p2
Spikes v 2% of Vo/p2 v 2% of Vo/p2
Protection and monitoring
Current limiting for overload 1 to 1.3 Io/pN2 1 to 1.3 Io/pN2
Green LED “24V o.k.” for Vo/p2 LED lights up if LED lights up if
Vo/p2 > 19.9 V to 21.1 V Vo/p2 > 19.9 V to 21.1 V
Maximum permitted capacity 0.2 mF 0.8 mF

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6ES5 955-3LC42 6ES5 955-3LF42

Output 3
Rated output voltage Vo/pN3 15 V DC ($ 5%) 15 V DC ($ 5%)
Rated output current Io/pN3 0.5 A 2A
Ripple v 1% of Vo/p3 v 1% of Vo/p3
Spikes v 3% of Vo/p2 v 3% of Vo/p2
Protection and monitoring
Overvoltage shutdown Vo/p3 17 V $ 5% 17 V $ 5%
Current limiting for overload 1 to 1.5 Io/pN3 1 to 1.5 Io/pN3
During startup 4 IAN3 for 40 ms
Green LED “15V o.k.” for Vo/p3 LED lights up if LED lights up if 14.2 to 14.7 V <
14.2 to 14.7 V < UA3< 16.1 to UA3< 16.1 to 17.9 V
17.9 V
Maximum permitted capacity 10 mF 10 mF
Backup battery
Type Lithium thionyl chloride
Capacity 5 Ah
No-load voltage 3.6 V
Voltage under load 3.4 V
Storage life approx. 10 years
Service life in operation 3 years max.
(see Section 4.3.4 for backup times)
Rechargeable battery
Type Nickel cadmium
Capacity 1.2 Ah
Rated voltage 3.6 V
Service life in operation 6 years at 40°C (104 °F)
(see Section 4.3.4 for backup times)
Protection against exhaustive discharge yes
Service life of fans approx. 50.000 h at 40°C approx. 50.000 h at 40°C
Weight approx. 5.8 kg approx. 5.8 kg
Noise emission 58 dBA 58 dBA
Environmental data See technical specifications of the S5-135U/155U CC

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6ES5 955-3NC42 6ES5 955-3NF42

Safety Specifications The power supply units comply with safety specifications VDE 0805 /
EN 60950 / IEC 950 / VDE 0160 and VDE 0106 Part 101.
Shock protection only ensured in the installed state.
Data for EMC in the installed state See technical specifications of the S5-135U/155U CC
Safe electrical separation is ensured. 1)
Input
Rated input voltage 24 V DC (19.2 - 33 V) 24 V DC (19.2 - 33 V)
(including ripple)
Input current Ii/p
at rated load and rated Vi/p = 24 V 9.5 A 20 A
Polarity reversal protection yes yes
Reak inrush current I i/pmax 100 A for 1 ms 200 A for 1 ms

I@t value of inrush current 2.7 A@s 18 A@s

Efficiency at rated load (with fans) and 0.60 0.67
Vi/p ¢ 24V
Max. heat dissipation at rated load 90 W 153 W
(with fans) at Vo/p1, Vo/p2, Vo/p3
Efficiency at rated load (without fans) and 0.65 0.70
Vi/p ¢ 230/120 V AC
Max. heat dissipation (without fans) 66 W 129 W
Stored energy time during power failure >20 ms >20 ms
at rated load and Vi/p ¢ 19.2 V DC 20 ms 20 ms
(adjustable) 5 ms 5 ms
Input fuse Littlefuse 322020, 220 A@s Littlefuse 322030, 620 A@s
Extenal battery supply 4.5 V 4.5 V
Output 1
Rated output voltage Vo/pN1 5.1 V DC $ 1.2% 5.1 V DC $ 1.2%
Rated output current Io/pN 18 A 40 A
Basic load 0.5 A 1.6 A (typical)
3.1 A (worst case)
Ripple v 1% of Vo/p1 v 1% of Vo/p1
Spikes v 4% of Vo/p1 v 4% of Vo/p1
Static voltage tolerances
– at 95% load variation v 0.08% of Vo/p1 v 0.08% of Vo/p1
– at 15% variation of Vi/p v 0.0005% of Vo/p1 v 0.0005% of Vo/p1
– at temperature variation / 1K v 0.02% of Vo/p1 v 0.02% of Vo/p1
Dynamic voltage tolerances
at load surge from 50% to 100% Io/pN
– overshoot v 3% of Vo/p1 v 3% of Vo/p1
– settling time* v 5 ms v 5 ms
1) These power supply units have a separation between the input circuit (24 VDC) and the secondary circuit which fulfills the
requirements for 230 VAC.

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6ES5 955-3NC42 6ES5 955-3NF42

Protection and monitoring
Voltage Monitor Monitors voltage for Monitors voltage for
<14 V and >16 V <14 V and >16 V
Overvoltage shutdown Vo/p1 6 V $ 5% 6 V $ 5%
Undervoltage signal Vo/p1 4.75 V + 3% 4.75 V + 3%
Current limiting for overload 1.0 to 1.2 Io/pN1 1.0 to 1.2 Io/pN1
Test sockets for Io/p1 on front plate (3 V ¢ 18 A) (3 V ¢ 40 A)
linearity range 0.5 V/2.8 A linearity range 0.5 V/6.6 A
to 3 V/18 A to 3 V/40 A
Signaling section Signals for SIMATIC S5, Signals for SIMATIC S5,
relays “Fan Warning, Fan Alarm, relays “Fan Warning, Fan Alarm,
Warning” 250 V/3 A Warning” 250 V/3 A
Green LED: “5V o.k.” for Vo/p1 LED lights up if LED lights up if
4.75 V < Vo/p1 4.75 V < Vo/p1
Output 2
Rated output voltage Vo/pN2 DC 24 V (+ 25%, -12.5%) DC 24 V (+ 25%, -12.5%)
Rated output current Io/pN2 1A 2.8 A
Total current X2 and front terminals 1 A max. 2.8 A max.
Ripple v 1% of Vo/p2 v 1% of Vo/p2
Spikes v 2% of Vo/p2 v 2% of Vo/p2
Protection and monitoring
Current limiting for overload 1 to 1.3 Io/pN2 1 to 1.3 Io/pN2
Green LED: “24V o.k.” for Vo/p2 LED lights up if LED lights up if
Vo/p2 > 19.9 V to 21.1 V Vo/p2 > 19.9 V to 21.1 V
Maximum permitted capacity 0.2 mF 0.8 mF
Output 3
Rated output voltage Vo/pN3 DC 15 V ($ 5%) DC 15 V ($ 5%)
Rated output current Io/pN3 0.5 A 2A
Ripple v 1% of Vo/p3 v 1% of Vo/p3
Spikes v 3% of Vo/p2 v 3% of Vo/p2
Maximum permitted capacity 100 mF 750 mF
Protection and monitoring
Overvoltage shutdown Vo/p1 17 V $ 5% 17 V $ 5%
Current limiting for overload 1 to 1.5 IAN3 1 to 1.5 IAN3
During startup 4 IAN3 for 40 ms
Green LED: “15V o.k.” for Vo/p3 LED lights up if 14.2 to 14.7 V < LED lights up if 14.2 to 14.7 V <
Vo/p3 < 16.1 to 17.9 V Vo/p3 < 16.1 to 17.9 V
Maximum permitted capacity 10 mF 10 mF

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6ES5 955-3NC42 6ES5 955-3NF42

Backup battery
Type Lithium thionyl chloride
Capacity 5 Ah
No-load voltage 3.6 V
Voltage under load 3.4 V
Storage life approx. 10 years
Service life in operation 3 years max.
(see Section 4.3.4 for backup times)
Rechargeable battery
Type Nickel cadmium
Capacity 1.2 Ah
Rated voltage 3.6 V
Service life in operation 6 years at 40 °C (104 °F)
(see Section 4.3.4 for backup times)
Protection against exhaustive discharge yes
Service life of fans approx. 50.000 h at 40 °C approx. 50.000 h at 40 °C
Weight approx. 5.8 kg approx. 5.8 kg
Noise emission 58 dBA 58 dBA
Environmental data See technical specifications of the S5-135U/155U CC

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4.4 6ES5 955-3NA12 Power Supply Unit

Your 135U central controller (6ES5 135-3UA41) contains the following

power supply unit (PSU):

Type of PSU Input Voltage Output Voltage

Designation
6ES5 955-3NA12 24 V DC 5 V/10 A DC
(primary/secondary, permissible range 0 to 10 A
non-floating) 24 V/0.8 A DC
permissible range 0 to 0.8 A

4.4.1 Technical Description

The power supply unit offers the following functions:

S System power supply
All system voltages needed to operate the CC are supplied. The 15 V
supply needed to operate the SINEC H1 system can be incorporated in the
power supply unit by fitting an auxiliary submodule.
S Data backup
A lithium battery ensures data backup when power is switched off or
fails.
S Heat dissipation
The power dissipation is removed by fans.

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LEDs and Controls The following indicators and controls are arranged on the front plate:

DC Line Monitor Output

24V DC
+ -

Disconnect
before removing
L+ M power supply!

1 2 3 4 5 6 78 9 10

ID Label Element Purpose

1 Fan Fault Red LED The LED lights up to indicate a fan fault. The PSU then switches off (jumper
F-R closed). If, for technical reasons, you cannot immediately switch off the
PLC, you must open jumper F-R. However, switch off the PLC after 60 s at
the latest (overheating of modules).
2 Batt. Low Yellow The LED lights up if the battery voltage has dropped below 2.7 V; the data
LED stored in the RAM may be lost after “Power OFF/ON.”
3 Reset Button If the PLC is in the “Power OFF” state, the battery must be replaced after
“Power ON” when the “Batt. Low” LED is lit. You must press the Reset
button after changing the battery.
4 Power Supply Green The LED lights up when the 5 V output voltage is present.
o.k. LED
5 Test 5 V Test socket To measure output voltage Vo/p1
(standard setting: 5.1 V DC $ 0.5%)
6 3 V = 10 A Test socket To measure output Io/p1
(3 V = max. output current of the PSU)
linearity range 0.5 V/1.6 A to 3 V/40 A
7 Power Supply Green The LED lights up to indicate presence of the 15 V output voltage (if the 15
o.k. (Bus) LED V auxiliary submodule is fitted) and 24 V output voltage
8 DC 15V/24V Test a) To measure output voltage Vo/p2
(Bus) sockets (24 V DC +25 %/-24 %)
b) To measure output voltage Vo/p3
(15 V DC $ 5 %, provided that 15 V aux. submodule is fitted)
9 Power Supply LED The green LED lights up to indicate presence of the output voltage at the “DC
o.k. (terminal) 24 V” terminal for the enable supply.
10 Batt. 3.4V/5Ah Battery The backup battery is arranged so that it can be replaced during operation and
drawer the PSU can be replaced during battery backup without the backup voltage
being interrupted.

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Terminals

DC Line Monitor Output

24V DC
+ -

Disconnect
before removing
power supply!
L+M

12 3 4 2 52 62 7

ID Label Element Purpose

1 Protective conductor terminal for PSU module and housing.
2 Strain reliefs for connecting cables, with metal contact surface for cable
shields.
3 DC Line Screw System connection, 24 V input voltage
terminals
4 Monitor Output Relay Standstill of one or both fans is signaled via LED and relay contact, and
output results in shutdown of output voltages (can be shut down via jumper F-R of
the PSU; then only relay signal and LED indication).
5 Enable Power Input/ No voltage at the EN input results in shutdown of the PSU. Not more than
supply output 7 EN inputs may be driven with one UH output (front terminal).
6 DC 24 V; 0.4 A Output This output can be used to power the enable inputs of the U Periphery.
7 Ext.Batt. 3.4 V Sockets Sockets for external 3.4 V backup voltage.

Caution
! Observe the appropriate VDE specifications, especially VDE 0100. The
terminals at the front are suitable for a conductor cross-section of up to
4 mm2, solid, or 2.5 mm2, flexible. Ensure adequate strain relief of the
connections.

15 V Auxiliary You can add a 15 V auxiliary submodule to the 6ES5 955-3NA12 power
Submodule supply unit (for example, if you wish to use SINEC H1). The auxiliary
submodule produces a stabilized 15 V output voltage from the 24 V output
voltage. The auxiliary submodule is short-circuit protected. The output
voltage is monitored. If the voltage is too low, the green “15/24 V o.k.” LED
on the front plate goes off. If the voltage is too high, the output is
short-circuited by a thyristor.

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4.4.2 Setting the Power Supply Unit

Locations of The figure shows the jumper settings when the unit is delivered.
Jumpers

Connector Connector
X1 X2

F NN

R MM
RR
LL

Front Plate

Functions of the The jumper settings in bold print indicate the status when the unit is
Jumpers delivered.

Function Jumpers

Battery monitor (BAU) On NN-MM closed

Battery monitor (BAU) Off NN-MM open

PSU shutdown after fan fault F-R closed

No PSU shutdown after fan fault (only LED F-R open

indication, relay signal)
Battery fault will be indicated by fault state of the RR-LL closed
signaling relay (contacts 2-3 closed).

Battery undervoltage (< 2.7V)

results in
battery fault signal (jumper
MM-NN).
Apart from “Batt. Low” LED
and output
of signal BAU, the signaling RR-LL open
relay can be activated as of Version 6 of the
PSU

Battery fault will not be indicated by fault state of the

signaling relay

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Setting the Fan You can set jumper F-R on the power supply units to choose whether or not
Monitor the air flow monitor should switch off the internal supply voltage Vo/p (5 V)
when a fan fails.
S Jumper F-R closed: Vo/p shutdown (signaled by contact)
S Jumper F-R open: no Vo/p shutdown (signaled by contact)
If one or both fans are at standstill, the signaling relay drops out (monitor
output). The “Fan Fault” LED lights up simultaneously.
S Relay contacts 2-1 closed: fan running
S Relay contacts 2-3 closed: fan failure
Relay contacts 2-3 closed; this is also the normally closed contact during
power OFF (failsafe).

Caution
! If an immediate shutdown is not possible, jumper F-R must be opened. In
this case you must ensure that the power supply is switched off after 60 s at
the latest. This can be achieved with a time relay, for example. It avoids
overheating and destruction of modules.

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Setting the Backup As of Version 6 of PSU 6ES5 955-3NA12, you can set jumper RR-LL to
Battery Monitor choose whether the signaling relay (monitor output) should switch in the
event of battery failure as well as fan failure:
S Jumper RR-LL open (state when delivered): relay will signal only a fan
failure
S Jumper RR-LL closed: relay will signal a fan and battery failure.
If the backup voltage fails or a fan is at standstill, or in both cases, the
signaling relay will drop out (monitor output). The “Batt. Low” LED will
also light up.
S Relay contacts 2-1 closed: battery backup voltage in order and fan
running
S Relay contacts 2-3 closed: backup voltage under 2.7 V or fan failure

Note
The signaling relay in the power supply unit will drop out in the event of a
fan fault or backup battery fault. The user’s circuitry for the signaling relay
must therefore be suitable for both types of fault.
If the signaling relay drops out because of a backup battery fault and the
programmable controller is therefore switched off, the program in the main
memory may be lost. Loss of program can be avoided if an external backup
voltage (3.4 V) is present at the sockets on the front plate of the power
supply unit during shutdown of the programmable controller.

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4.4.3 Installation

To install the power supply unit, push it into the rack. Press it in firmly until
the front plate is at the rack. The spring pressure of the contact elements must
be overcome. Then tighten the two screws to the left and right of the front
plate in the rack. The protective conductor jumper on the left must be
permanently connected to the front plate terminal and the central rack.

Caution
! Power supply units may only be removed when no power is applied.

When the power supply unit is pulled out, the connection between backup
battery and backplane bus is retained; the backup supply for the modules is
thus ensured.

Installing the 15 V The auxiliary submodule (see ordering information for order number) may
Auxiliary only be inserted when the power is off.
Submodule
Remove the power supply unit, fit the 15 V auxiliary submodule at the
location shown in the following figure.

Connector Connector
X1 X2
Trans-
former

AA BB
Space for
LL RR
Auxiliary
Submodule

Front Plate

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4.4.4 Operation

Before placing the power supply unit in operation, please comply with the
following.

General Notes on
the Power Supply
S This power supply unit does not have potential isolation between its
Unit
primary and secondary circuits.
S No voltage of more than 50 V may develop between the power supply
outputs and the protective conductor of the power supply unit.
S The protective conductor must always be connected, as must the jumper
between CC rack and front plate of the power supply unit.
S In the event of overvoltage of the internal DC supply voltages
Vo/p1 = +5 V and Vo/p3 = +15 V, the power supply unit is switched off
retentively. There is a voltage of v0.5 V at Vo/p1 and Vo/p3 in the Off
state (see Section 4.4.6, Technical Specifications, for overvoltage
shutdown).
The storage flip-flop is reset by switching the external supply voltage off
and on again, and the power supply unit is again operational if the
overvoltage was not the result of an internal fault.
S You can insert an air filter with filter holder in the bottom of the housing
of the power supply unit.
S Observe the voltage level of 3.4 V and correct polarity when applying an
external backup voltage.
S Before startup, a lithium backup battery must be fitted or an external
backup battery with a voltage level of 3.4 V DC must be connected.
Without a backup battery, the programmable controller will remain in the
Stop state when system voltage has been switched on. The backup battery
must be fitted for startup. Press the RESET button, then perform an
OVERALL RESET.
S The jumper from terminals UH to EN will enable the power supply. You
can lock out the PLC in the event of a fault by means of suitable circuitry
between the monitoring outputs and the EN inputs.

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Fault Indications/ Power supply faults are indicated via relay contacts and LEDs.
Diagnostics
The following table shows when the relay contacts are open or closed:

Power Supply Relay Contacts 1-2 Relay Contacts 2-3

Switched off Open Closed
In normal operation Closed Open
During fault Open Closed

The LEDs indicate the following faults:

LED Cause Action

“Fan Fault” LED A fan fault has occurred. Replace fan
lights up.
“Batt. low” LED The battery voltage has dropped below Replace backup
lights up. 2.7 V. battery

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4.4.5 Maintenance
Replacing the
Lithium Battery

Caution
! Incorrect replacement of the battery can result in the danger of explosion.
It should only be replaced by the same type or an equivalent type
recommended by the manufacturer. Used batteries should be disposed of
according to the manufacturer’s instructions.

You can replace the backup battery without loss of data if the power supply
unit is switched on, or if you apply an external voltage (3.4 V) at the “Ext.
Batt.” sockets. The backup battery must be replaced every 3 years at the
latest, irrespective of memory configuration and backup operation. Replace
the battery as follows:

Step Action
1 Pull the cover downwards.

2 Pull the battery submodule forwards and out, and remove it.

3 Replace the battery.

4 Ensure correct polarity.

5 Once the new battery is fitted and system voltage is On, press the Reset
button on the power supply unit.

Battery
Submodule

+
Sockets for External
Backup Voltage

Battery Submodule
*

Cover

Only use battery submodules with the order number 6XG3 400-2CK00.

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Caution
! Ensure correct polarity when inserting the battery or applying backup
voltage.

Warning
! Risk of danger to persons and property, danger of giving off harmful
substances.
If handled incorrectly, a lithium battery can explode. If disposed of
incorrectly, old lithium batteries can release harmful substances. You must
therefore observe the following guidelines:
S Do not throw new or discharged batteries onto a fire and do not solder
onto the body of the cell (max. temperature 100 °C (212 °F)). Do not
recharge them. Order your replacement battery from Siemens only (for
order number see ordering instructions). This ensures that you only use a
short-circuit-protected type.
S The lithium battery is subject to regulations for hazardous materials. You
should observe these regulations when you shipthe battery, for example,
by using the original packaging. Used batteries should be returned to the
manufacturer or a recycling station if possible or disposed of as
hazardous waste. The guidelines for transporting hazardous materials
should be observed.

Replacing the The expected service life of the fans (see Technical Specifications) depends
Fans on their operating time, ambient temperature and ambient conditions. In the
event of fan failure during operation, subsequent damage to modules, for
example, is avoided by the activated fan monitor (jumper F-R closed); the
power supply unit is switched off.
In individual cases, a preventive replacement of fans at suitable intervals may
be advisable. Proceed as follows to replace the fans:

Step Action
1 Disconnect power from the power supply.
2 Remove the power supply.
3 Slacken the fixing screws of the fans.
4 Pull off the plug-in contacts of the fan supply.
5 Connect the plug-in contacts of the new fans.
6 Tighten the fixing screws of the fans.
7 Refit the power supply.
8 Switch the power supply on.

The order numbers for the backup battery and fan unit can be found in the
ordering information.

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4.4.6 Technical Specifications

Important for the USA and Canada
The following approvals habe been obtained:
S UL-Recognition-Mark
Underwriters Laboratories (UL) to
Standard UL 508, Report E 116536
S CSA-Certification-Mark
Canadian Standard Association (CSA) to
Standard C 22.2 No. 142, Report LR 63534

Safety Specifications The power supply unit complies with safety specifications
VDE 0805 / EN 60950 / IEC 950 / VDE 0160 and VDE
0106 Part 101.
Input
Rated input voltageVi/pN DC 24 V +25% / -16.66%
Undervoltage signal Vi/p v 20 V DC
Input current Ii/pN 4.8 A
at rated load and Vi/pN = 24 V DC
Inrush current peak Ii/pmax 100 A
I@t value of inrush current 20 A@s
Efficiency at rated load and Vi/pN = 20 V
without fan 0.71 typical
with fan 0.60 typical
Stored energy time for power failure > 5 ms
Input fuse 6 A fast; 250 V; 6.3 x 32 mm
Output 1
Rated output voltage Vo/pN1 5.1 V DC $ 0.5%
Rated output current Io/pN1 10 A
Ripple v 1% of Vo/p1
Static voltage tolerances
at 10% load variation v 0.02% of Vo/p1
at 5% variation of UE v 0.04% of Vo/p1
at temperature variation /1 K v 0.02% of Vo/p1
Dynamic voltage tolerances
at load surge from 50 % to 100 %
overshoot v 5% of Vo/p1
settling time v 5 ms
Protection and monitoring
Overvoltage shutdown Vo/p1 6 V $ 5%
Undervoltage signal Vo/p1 4.75 V + 5%
Current limiting for overload 1.05 to 1.15 Io/pN1
Test sockets for On front plate
Vo/p1 On front plate (3 V ¢ 10 A)
Linearity range 0.5 V/1.6 A to 3 V/10 A

Io/p1
Signaling section Signals for SIMATIC S5

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Output 2 (bus)
Rated output voltage Vo/p2 24 V DC +25% / -20%
Rated output current Io/p2 0.8 A
Total current rating v 0.8 A
24V-/ 15V output
Ripple Input voltage ripple
Protection and monitoring
Fuse for overcurrent protection 1.5 A fast; 250 V; 6.3 x 32 mm
Test sockets for Vo/p2 on front plate (24 V test)
– green LED 15V/24V o.k. for Vo/p2 (fuse monitor) The LED lights up when Vo/p2 > 17.9 to 18.5 V
Output 2 (front)
Rated output voltage Vo/pN4 24 V DC +25% / -24%
Rated output current Io/pN4 0.4 A
– Capacitive load < 100 nF
Protection and monitoring
Overcurrent protection by current limiting Io/p4 > 0.44 A
Test sockets for Vo/p2 on front plate (24 V test)
– green LED 24V o.k. for Vo/p4 The LED lights up when Vo/p4 > 16 V $ 20%
Total current rating of 24 V voltages (bus and front) must not exceed 0.8 A
Output 3 with 15 V auxiliary submodule
Rated output voltage Vo/pN3 15 V DC $ 5%
Rated output current Io/pN3 0.5 A
Ripple v 5% of Vo/pN3
Protection and monitoring
Overvoltage protection (output is short-circuited w 18.5 V
at Vo/p3)
Undervoltage signal (LED 15V/24V o.k.
on front plate goes off at) v 14 V $ 3%
Overcurrent protection Io/p3 by current limiting > 0.5 to 1.5 A

Test socket for Vo/p3 on front plate (15 V test)

Fans
Fan type 2 axial fans
Input voltage 24 V DC
Flow rate per fan 160 m3/h (no-load value)
Fan monitoring Air flow monitoring with PTC thermistors as sensors;
stoppage of one or both fans is detected and signaled to the
exterior via Fan Fault LED and relay contacts, and results
in shutdown of output voltage (switched off via jumper
F-R).
Expected service life of a fan 30 000 to 40 000 h typical at 55 oC;
40 000 to 50 000 h typical at 30 oC;
Isolation primary/sekondary No
and test voltages
Weight 3.75 kg
Environmental data See technical specifications of the S5-135U/155U CC
RFI suppression DIN VDE 0871, A

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4.5 Fan Submodules

4.5.1 Technical Description

The fan submodule variants 6ES5 988-3LA11 (230 V AC) and

6ES5 988-3NA11 (24 V DC) are described in the following section.
A fan submodule has the following function:
S Heat dissipation
The fan submodule dissipates any excess heat created in the central
controller or expansion unit.

Connections and The following terminals and LEDs are fitted on the front plate (the front
LEDs plate of the -3LA11 is shown as an example):

SIEMENS
AC line Monitor Output
9 10

Relay max.
AC 230V 250V AC/3A
7 8

CAUTION!
6ES5 988-3LA11

Disconnect Fan
5 6

before
removing Fault
power supply!
Voltage selector
4

inside the unit!

3

L1 N 1 23
1 2

Use copper wire 60/75° C only!

Tightening torque: terminals 0,8Nm/ 1,8 Nm

ID Label Element Purpose

1 Protective conductor terminal for fan submodule and housing.
2 ZStrain reliefs for connecting cables, with metal contact surface for cable
shields.
3 230V AC Screw AC connection
terminals
L1, N (details for -3LA11)
24V DC Screw 24 V DC supply
terminals + –
(details for -3NA11)
4 Monitor Output Relay output Standstill of one or both fans is signaled via LED and relay contact.
5 Fan Fault Red LED The LED lights up to indicate a fan fault.

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Caution
! Observe the appropriate VDE specifications, especially VDE 0100. The
terminals at the front are suitable for a conductor cross-section of 4 mm2
solid or 2.5 mm2 flexible. Ensure adequate strain relief for the connections.

Position of the DThe figure shows the setting of the voltage selector switch when delivered
Voltage Selector (230 V).
Switch and the
Fuse

230V

S13
F12

Front plate
1 2

ID Element Purpose
1 Fuse F12 Protecting the fan submodule against overload
2 Voltage selector switch Setting the fan submodule -3LA11 for the
S13 (-3LA11 only) available line voltage: (115 V or 120 V or 230 V)

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4.5.2 Setting and Connecting the Fan Submodule

Before starting up your fan submodule, you must perform certain steps
according to your requirements with respect to fan submodule behavior in the
event of a fault.
The fan submodule is delivered in the following state:
S Fitted in the CC or EU frame you ordered
S AC line voltage set to 230 V
If you wish to retain this setting, you can skip Steps 2 to 5.

Step Action
1 Check the setting and cabling

2 Remove the fan submodule If required

3 Fit the fan submodule If required

4 Wire the fan submodule to the installation (including fitting

an isolating device to disconnect the AC line voltage)
5 On the -3LA11 set the voltage selector switch (factory If required
setting 230 V)
6 Switch on the fan submodule for the first time

Establishing the Wiring of the fan submodule must be planned within the scope of wiring the
Wiring entire control system. The information required for the purpose and
decision-making aids (for example, for local or central grounding) can be
found in Chapter 3, Installation Guidelines.

Establishing the Two relay outputs allow you to install additional external signaling circuits
Signaling Circuits for fault states, for example, to connect a cabinet lamp or horn.

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Selecting Cables The following applies to selecting the cables for the terminals:

Terminals Cabling Max. Permissible Cable

Cross-Sections

Power supply AC line Phase L1 4 mm2 solid or 2.5 mm2

flexible

Neutral N 4 mm2 solid or 2.5 mm2

flexible

Protective conductor 4 mm2 solid or 2.5 mm2

flexible

Relay terminals, also suitable 4 mm2 solid or 2.5 mm2

to 230 V AC / 3 A flexible

Installing and For installing and removing the fan submodule, refer to the instructions in
Removing the Fan Section 4.3.2 on the power supply unit. These also apply in principle here.
Submodule

Wiring up the Fan FFor wiring up the fan submodule, refer to the instructions in Section 4.3.2
Submodule on the power supply unit. These also apply in principle here.

Switching on the The fan submodule is switched on when the line voltage for the central
Fan Submodule controller or expansion unit is switched on.
for the First Time

Caution
! If you have set the voltage selector switch on the -3LA11 to 120 V, but the
actual voltage value is 230 V, the fan submodule may be damaged when line
voltage is switched on.

Fault Indications/ Fan submodule faults are indicated via relay contacts (“Monitor Output”) and
Fault Diagnostics an LED.
The following table shows when the relay contacts are open or closed:

Fan Submodule Relay Contact 1-2 Relay contact 2-3

Switched off open closed
In normal operation closed open
During fault open closed

In the case of a fault, the red LED “Fan Fault” lights up.

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4.5.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL-Recognition-Mark
Underwriters Laboratories (UL) to
Standard UL 508, Report E 116536
S CSA-Certification-Mark
Canadian Standard Association (CSA) to
Standard C 22.2 No. 142, Report LR 63534

6ES5 988-3LA11 6ES5 988-3NA11

Safety Specifications The power supply units comply with safety specifications
VDE 0805 / EN 60950 / IEC 950 / VDE 0160 and VDE
0106 Part 101.
Shock protection Only ensured in the installed state.
Data for EMC in the installed state See technical specifications of the S5-135U/155U CC
Safe isolation Is ensured.
Input
Rated input voltage 110 V AC (93.5-121 V), 24 V DC (20 - 30 V)
220 V AC (187-242 V)
Input frequency 50/60 Hz (48-63 Hz) –
Input current Ii/pN approx. 0.48 A approx. 1 A
(and Vi/pN = 120 V)
approx. 0.24 A
(and Vi/pN = 230 V)
Peak inrush current Ii/pmax <5A < 10 A
Max. heat dissipation at rated load (with fans) approx. 52 W approx. 24 W
Max. heat dissipation at rated load (without fans) approx. 12 W approx. 9 W
Stored energy time during power failure > 20 ms
Input fuse 1.5 A fast; 250 V; 2.4 A2s
Service life approx. 42.000 h at 40 oC
Weight approx. 4 kg
Environmental data See technical specifications of the S5-135U/155U CC

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Submodules, Interface Submodules 5
This chapter contains information on the CPUs, memory cards, modules and
submodules which you can use in your programmable controller.
The following CPUs may be fitted in an S5-135U/155U central controller:
CPU 948
CPU 928B
CPU 928
CPU 922.
A programmable controller containing a CPU 948 is known as an S5-155U
PLC. A programmable controller containing CPUs 928B, 928 and/or 922
(and not the CPU 948) is known as an S5-135U PLC.
You can fit a flash EPROM memory card containing your user program in the
CPU 948, 928B -3UA21 and 928 -3UA21. For the CPUs 928B, 928 and 922,
there are RAM or EPROM submodules for the purpose.
CPUs 948 and 928B have, apart from the programmer interface, a second
serial interface. An interface submodule is required for physical adaptation.

Chapter Section Description Page

Contents 5.1 CPU 948B -3UA13 or CPU 948B -3UA23 5-2
5.2 CPU 948 5-17
5.3 CPU 928B -3UB21 5-30
5.4 CPU 928B 5-42
5.5 CPU 928 -3UA21 5-54
5.6 CPU 928 5-62
5.7 CPU 922 5-71
5.8 374 Flash EPROM Cards 5-80
5.9 376 Memory Submodules 5-82
5.10 377 Memory Submodules 5-84
5.11 Interface Submodules 5-92

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5.1 CPU 948B -3UA13 or CPU 948B -3UA23

This section contains the hardware description and technical specifications of

the CPU 948B -3UA13 or the CPU 948B -3UA23.
Details on programming the CPU 948 can be found in the CPU 948
Programming Guide.

5.1.1 Technical Description

This section contains information on the application, design and structure of

the CPU 948.

Application You can use the CPU 948 in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6).
There are two versions of CPU 948:
The CPU 948-1 offers 640 Kbytes of internal user memory (RAM).
The CPU 948-2 offers 1664 Kbytes of internal user memory (RAM).

As an external memory medium, you can use a memory card 374.

The following program processing levels are possible:

Cyclic
Time-controlled (9 different timebases, real-time controlled, timeout)
Interrupt-driven from the S5 bus (8 process interrupts at block boundaries
via IB0 or, alternatively, 4 system interrupts)
Soft STOP.

Design The electronic circuitry of the CPU 948B is on one PCB in the double
Eurocard format. The front plate width is 1 1/3 standard plug-in stations, i.e.
20 mm. In the central controller rack, the CPU 948B -3UA13 or the
CPU 948B -3UA23 occupies one slot.

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5.1.2 Installation and Startup

Jumper Settings There are four system interrupts for interrupt-driven program processing with
the CPU 948:
INTA/B/C/D (depending on the CPU slot, see also Section 4.1.1)
INTE
INTF
INTG.
The interrupts you wish to use must be enabled by inserting the jumper plugs
provided. The jumper socket is situated on the basic board above the
receptacle for the memory card. The exact location is given in Figure 5-1:

Figure 5-1 Location of Jumper Socket

If you want to operate an IM308C in the IM3/IM4 area and additional digital
or analog modules in the central controller, you must insert the jumper shown
in Figure 5-1.

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Note
All other jumpers on the CPU 948B -3UA13 or the CPU 948B -3UA23 are
required for quality testing by the manufacturer. You must not change these
jumper settings.

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U CC from slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90 clockwise.
5 Secure the upper locking bar.

Note
If you install the CPU 948 -3UA13 or the CPU 948 -3UA23 as the
replacement for a double-width CPU 948, you must cover the slot which has
been freed up with a blanking plate.

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Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

Note
Only operate the CPU 948 -3UA13 or the CPU 948 -3UA23 with the
submodule receptacle closed. You close it either by fitting an interface
submodule or with the cover supplied.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

CPU 948U
Fault Indicator LED (red)

QVZ

ADF

Receptacle for
ZYK User Memory Submodule

BASP
SI1 Interface Fault Indicator LED (red)
SI1
SI2 Interface Fault Indicator LED (red)
SI2
RUN RUN LED (green)

Mode Switch
STOP STOP LED (red)
S–F SYS FAULT LED (red)
RESET
Momentary-Contact Mode Switch
OV-
RESET

PG Interface, 15-Pin
Interface SI1

Order Number and Version

6ES5948-3UA13
SIEMENS

Release Lever

Locking Pin

Figure 5-2 Front Plate of the CPU 948-3UA13 or the CPU 948-3UA23

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 948 processes the user program when the green
RUN LED is lit.

STOP The CPU 948 goes to the stop state when you switch from RUN to STOP.
The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized (both on the
CPU and on a RAM submodule).

RESET Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters, and the process image
are retained during stoppage of the CPU.

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Status Indicators Given in the following overview are the functions of the RUN, STOP and
SYS FAULT status LEDs.
The STOP LED indicates a soft stop; the SYS FAULT LED indicates a hard
STOP.
The CPU 948 can process a user program (OB 39) cyclically at the soft
STOP, but the digital outputs remain inhibited. At the hard STOP, no program
can run and the CPU has “stopped.” This state can only be exited by
switching the system voltage off and on again.

RUN STOP SYS Status

LED LED FAULT
LED
on off off The CPU is in the RUN state (cyclic
operation).
on on on Appears briefly after power-up of the unit.
off off off CPU is in the initial start or program check
state.
off on off CPU is in the soft STOP state.
off rapid off CPU is in the soft STOP state.
flashing Overall reset has been requested by switch or
from the operating system.
off slow off CPU is in the soft STOP state. An error has
flashing occurred; see the CPU 948 Programming
Guide for possible causes.
off off on CPU is in the hard STOP state. No program
processing is taking place. You can only exit
from this state by switching the system
voltage off and on again.

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LEDs for Fault Given in the following overview are the causes for LEDs lighting up:
Indication and
Signaling
QVZ LED
on A module addressed by the program no longer acknowledges
although/because
it either acknowledged in single-processor operation upon
restart of the CPU 948 in the area of the process image
(IB0 to 127, QB0 to 127) and has been entered as present
in the so-called 9th track;
or it has been entered in multi or single-processor
operation in DB 1 (address list) and has been recognized
as present during the restart;
or it was addressed in direct access by operations LPY,
LPW, TPY, TPW, LOY, LOW, TOY, TOW;
or the data handling blocks cannot access the module.
Possible causes:
Module failure
Module removed during operation, in the STOP state or in
the Off state without subsequent restart.
A timeout occurred during access to the user memory.
ADF LED
on The user program has referred to an address in the process
image under which no module was inserted in the I/Os or was
not entered in DB 1 during the last restart.
ZYK LED
on The preset cycle time monitor has responded and cyclic
program processing is interrupted.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state (0).

A detailed description of interrupt and error handling can be found in the

CPU 948 Programming Guide.

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Fault LEDs SI1 LEDs SI1 and SI2 indicate faults in communication via interfaces SI1
and SI2 and SI2:

LED SI1 LED SI2 Cause

on on Communication is not possible at both interfaces.
Internal fault.
on off SI1:
No communication possible.
Internal fault.
SI2:
Interface is initialized and ready.
LED SI2 is always off if no interface module is
inserted.
off on SI1:
Interface is initialized and ready.
SI2:
No communication possible. Wrong module
inserted or internal fault.
off off Both interfaces are initialized and ready.
LED SI2 is always off if no interface module is
inserted.

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Startup The module must be inserted at the correct slot in the central controller. The
backup battery must be fitted and in order for the CPU to start.

Overall Reset Proceed as follows:

Step Action Result

1 Set the mode switch to STOP
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED
(flashing rapidly)
– Red BASP 2) LED
3 Hold the MC 1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact
2) BASP: Command output inhibit

If the red SYS FAULT LED also lights up, an error has occurred during
overall reset. In this case the measures described must be repeated. If
necessary, switch the system voltage off and on again. If the LED is still lit,
the module is faulty.

Reset Continue as follows:

Step Action Result

1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

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Restart You can also carry out a manual restart of the CPU 948 with the mode
switch. The CPU 948 Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

1 Set the mode switch from – Red STOP LED goes off
STOP to RUN – RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.1.3 Interfaces of the CPU 948

This section contains information on the interfaces of the CPU 948.

PG interface SI1 You can use the PG interface on the CPU 948 either via the front connector
or via the 923C coordinator module and the S5 bus.

Note
Simultaneous operation of the PG interface via the front connector of the
CPU 948 and via the 923C coordinator is not possible. Switching the PG
online without a job request is already sufficient to operate the interface.
Electrically, it is merely a PG interface which can be operated via two
different terminals.

The connection to the PG can be established in every operational state of the

CPU.

Second Interface You can optionally use the second interface of the CPU 948 -3UA13 or the
SI2 CPU 948 -3UA23 as:
A PG interface (for PG and operator panels)
Interface for the RK 512 computer link
Interface for data transmission with procedures 3964/3964R
Interface for data transmission with the “open driver”
Interface for data transmission via the SINEC L1 bus.
To utilize the second interface as the PG interface, you need the
PG submodule.
You need one of the following interface submodules for the RK 512
computer link, for data transmission with procedures 3964/3964R and for
data transmission with the “open driver”:
V.24 submodule (RS 232C)
TTY submodule
RS422 A/485 submodule (only in the RS422 A module).
To utilize the second interface for data transmission via the SINEC L1 bus,
you need the
SINEC L1 submodule.
The CPU 948 -3UA13 or the CPU 948 -3UA23 is delivered without an
interface submodule. You can operate the CPU 948 -3UA13 or the CPU 948
-3UA23 without an integral interface submodule. The opening to accept a
submodule in the front plate is closed by a cover. Only remove the cover to
fit an interface submodule.
A description of interface submodules can be found in Section 5.11, and the
order numbers in the ordering information.
A detailed description of the second interface can be found in the
CPU 928B/CPU 948 Communication Manual.

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Communication A PG-PLC link via SINEC H1 allows very advanced communication

via Backplane Bus between the partners. For example, the user software can be loaded into the
with SINEC H1 CPU 948 up to eight-times faster than with serial communication.
For this link you will need, in addition to the CPU 948, a CPU 143 (Version
w 2.1) in the PLC and a PG7xx with SINEC H1 connection and the STEP 5
single-tasking software from Version 6.0 or multi-tasking from Version 2.0.

Note
You cannot implement communication via SINEC H1 in parallel with the
serial interfaces.

Communication via SINEC H1 is described in detail in the CPU 948

Programming Guide.

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5.1.4 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
24 V + 25 %/ –17 %
Current consumption at 5 V 1.5 A typical
Backup voltage 3.4 V
Backup current 20 mA typical (at 25 _C)
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
S flags 32768
Timers 256
Counters 256
Size of user memory 64 x 2!) bytes max., RAM
Transmission rate of the serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256

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Data blocks DB 256, of which 253 are freely available

Data blocks DX 256, of which 253 are freely available
Organization blocks OB OB 1 to 39 (interfaces for operating system)
Integrated special function organization OB 121, 122, 124-126, 131-133, 141-143, 150, 151, 153, 200,
blocks OB 202-205, 222, 223, 254, 255
Integrated serial interface PG interface
Optional serial interface Via interface submodules, optionally as V.24, TTY, RS422 A/485
submodule, SINEC L1 or PG interface
Backplane bus S5 bus
Dimensions (w x h x d) 20.32 x 233.4 x 160 mm
Weight Approx. 0.6 kg

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5.2 CPU 948

This section contains the hardware description and the technical

specifications of the CPU 948.
Details on programming the CPU 948 can be found in the CPU 948
Programming Guide.

5.2.1 Technical Description

This section contains information on the application, design and structure of

the CPU 948.

Application You can use the CPU 948 in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6).
There are two versions of CPU 948:
The CPU 948-1 offers 640 Kbytes of internal user memory (RAM).
The CPU 948-2 offers 1664 Kbytes of internal user memory (RAM).
A SIMATIC S5 flash EPROM memory card (known as a memory card for
short in the following) can be inserted in the CPU 948 as the storage medium
for user program and user data. The contents of the memory card are copied
into the internal RAM of the CPU upon overall reset.
The programming language is STEP 5 (LAD, CSF, STL, SCL). The CPU 948
processes all STEP 5 operations at very high speed, and uses fast
floating-point arithmetic.
The following program processing levels are possible:
Cyclic
Time-controlled (9 different timebases, real-time controlled, timeout)
Interrupt-driven from the S5 bus (8 process interrupts at block boundaries
via IB0 or, alternatively, 4 system interrupts)
Soft STOP.

Design The electronic circuitry of the CPU 948, including the RAM, is on two PCBs
of double Eurocard format which are screwed to each other. The two PCBs
must not be separated. The front plate width of the module is 2 2/3 standard
plug-in stations, i.e. 40 mm. In the central controller rack, the CPU 948
occupies two slots.

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5.2.2 Installation and Startup

This section explains the installation and removal of the module in the CC,
controls and indicators on the front plate of the CPU, and the procedure for
module startup.

Jumper Settings There are four system interrupts for interrupt-driven program processing with
the CPU 948:
INTA/B/C/D (depending on the CPU slot, see also Section 4.1.1)
INTE
INTF
INTG.
The interrupts you wish to use must be enabled by inserting the jumper plugs
provided. The jumper socket is situated on the basic board above the
receptacle for the memory card. The exact location is given in Figure 5-3:

INTG
INTF
INTE
INTA/B/C/D

View of underside of module

Front panel

Jumper

Figure 5-3 Location of Jumper Socket Location of an Additional Jumper for the
Functions Described Below

If you want to operate an IM308C in the IM3/IM4 area and additional digital
or analog modules in the central controller, you must insert the jumper shown
in Figure 5-3.

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Note
All other jumpers are required for quality testing by the manufacturer. You
must not change these jumper settings.

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.
The basic board and expansion board of the CPU 948 are one unit and must
not be separated.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U PLC from the extreme left
at slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90 clockwise.
5 Secure the upper locking bar.

Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

S5-155U CPU948

Receptacle for
Memory Card

RUN
STOP Mode Switch
RUN LED (green)
STOP LED (red)
SYS FAULT LED (red)
RÜCKSETZEN
RESET

Momentary-Contact Mode Switch

URLÖSCHEN
OVERALL
RESET
Fault Indicator LEDs (red)
QVZ INIT Fault Indicator LED (red)
ADF SI1 Interface Fault Indicator LEDs (red)
ZYK SI2
BASP Interface SI1
PG Interface, 15-Pin
6ES5948–3UA11

SI1 SI2

Second Serial Interface SI2

Receptacle for Interface Module
SIEMENS

Oder Number and Version

Release Lever

Locking Pin

Figure 5-4 Controls and Indicators of the CPU 948

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 948 processes the user program when the green
RUN LED is lit.

STOP The CPU 948 will go to a soft STOP when you switch over from RUN to
STOP. The red STOP LED will then light up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch and the mode changeover switch:
Switch

OVERALL RESET Momentary-contact switch down

During an overall reset, the internal RAM is re-initialized, i.e. existing data
will be erased and the contents of the memory card, if present, will be copied
into the internal RAM.

Reset Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

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Status Indicators Given in the following overview are the functions of the RUN, STOP and
SYS FAULT status LEDs.
The STOP LED indicates a soft stop; the SYS FAULT LED indicates a hard
STOP.
The CPU 948 can process a user program (OB 39) cyclically at the soft
STOP, but the digital outputs remain inhibited. At the hard STOP, no program
can run and the CPU has “stopped.” This state can only be exited by
switching the system voltage off and on again.

RUN STOP SYS Status

LED LED FAULT
LED
on off off The CPU is in the RUN state (cyclic
operation).
on on on Appears briefly after power-up of the unit.
off off off CPU is in the initial start or program check
state.
off on off CPU is in the soft STOP state.
off rapid off CPU is in the soft STOP state.
flashing Overall reset has been requested by switch or
from the operating system.
off slow off CPU is in the soft STOP state. An error has
flashing occurred; see the CPU 948 Programming
Guide for possible causes.
off off on CPU is in the hard STOP state. No program
processing is taking place. You can only exit
from this state by switching the system
voltage off and on again.

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LEDs for Fault Given in the following overview are the causes for LEDs lighting up:
Indication and
Signaling
QVZ LED
on A module addressed by the program no longer acknowledges
although/because
it either acknowledged in single-processor operation upon
restart of the CPU 948 in the area of the process image
(IB0 to 127, QB0 to 127) and has been entered as present
in the so-called 9th track;
or it has been entered in multi or single-processor
operation in DB 1 (address list) and has been recognized
as present during the restart;
or it was addressed in direct access by operations LPY,
LPW, TPY, TPW, LOY, LOW, TOY, TOW;
or the data handling blocks cannot access the module.
Possible causes:
Module failure
Module removed during operation, in the STOP state or in
the Off state without subsequent restart.
A timeout occurred during access to the user memory.
ADF LED
on The user program has referred to an address in the process
image under which no module was inserted in the I/Os or was
not entered in DB 1 during the last restart.
ZYK LED
on The preset cycle time monitor has responded and cyclic
program processing is interrupted.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state (0).
INIT LED
on This LED is continuously lit for a short time during
initialization after power ON and during operation in the
event of system faults.

A detailed description of interrupt and error handling can be found in the

CPU 948 Programming Guide.

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Fault LEDs SI1 LEDs SI1 and SI2 indicate faults in communication via interfaces SI1
and SI2 and SI2:

LED SI1 LED SI2 Cause

on on Communication is not possible at both interfaces.
Internal fault.
on off SI1:
No communication possible.
Internal fault.

SI2:
Interface is initialized and ready.
LED SI2 is always off if no interface module is
inserted.
off on SI1:
Interface is initialized and ready.

SI2:
No communication possible. Wrong module
inserted or internal fault.
off off Both interfaces are initialized and ready. LED SI2
is always off if no interface module is inserted.

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Startup The modules must be inserted at the correct slots in the central controller.
The backup battery must be fitted and in order for the CPU to start.

Overall Reset Proceed as follows:

Step Action Resultat

1 Set the mode switch to STOP.
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED (flashing
rapidly)
– Red INIT LED, briefly
– Red BASP 2) LED
3 Hold the MC 1) switch in the Die rote LED “STOP” zeigt nun
OVERALL RESET setting Dauerlicht.
and simultaneously set the
mode switch from STOP to
RUN.

1) MC: Momentary-contact
2) BASP: Command output inhibit

If the red SYS FAULT LED also lights up, an error has occurred during
overall reset. In this case the measures described must be repeated. If
necessary, switch the system voltage off and on again.
If the LED is still lit, the module is faulty.

Reset Continue as follows:

Step Action Result

4 Set the mode switch to STOP.
5 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

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Restart You can also carry out a manual restart of the CPU 948 with the mode
switch. The CPU 948 Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

1 Set the mode switch from – Red STOP LED goes off
STOP to RUN – RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.2.3 Interfaces of the CPU 948

This section contains information on the interfaces of the CPU 948.

PG Interface SI1 You can use the PG interface on the CPU 948 either via the front connector
or via the 923C coordinator module and the S5 bus.

Note
Simultaneous operation of the PG interface via the front connector of the
CPU 948 and via the 923C coordinator is not possible. Switching the PG
online without a job request is already sufficient to operate the interface.
Electrically, it is merely a PG interface which can be operated via two
different terminals.

The connection to the PG can be established in every operational state of the

CPU.

Interface SI2 You can also use the second interface of the CPU 948 as a PG interface.
Physical adaptation is achieved with a PG module (see also Section 5.9,
Interface Submodules).
A detailed description of PG interfaces can be found in the CPU 948
Programming Guide.

Communication A PG-PLC link via SINEC H1 allows very advanced communication

via Parallel between the partners. For example, the user software can be loaded into the
Backplane Bus CPU 948 up to eight-times faster than with serial communication.
with SINEC H1
For this link you will need, in addition to the CPU 948, a CPU 143 (Version
w 2.1) in the PLC and a PG7xx with SINEC H1 connection and the STEP 5
single-tasking software from Version 6.0 or multi-tasking from Version 2.0.

Note
You cannot implement communication via SINEC H1 in parallel with the
serial interfaces.

Communication via SINEC H1 is described in detail in the CPU 948

Programming Guide.

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5.2.4 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V"5%
Current consumption at 5 V 3.6 A typical
Backup voltage 3.4 V
Backup current 10 mA typical (at 25 °C)

P area O area IM3 area IM4 area Total

Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image or 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image or 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
S flags 32768
Timers 256
Counters 256
Size of user memory 640 or 1664 Kbyte RAM
Transmission rate of serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256

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Data blocks DB 256, of which 253 are freely available

Data blocks DX 256, of which 253 are freely available
Organization blocks OB OB 1 to 39
(interfaces for operating system)
Integrated special function organization OB 121, 122, 124-126, 131-133, 141-143, 150, 151, 153, 200,
blocks OB 202-205, 222, 223, 254, 255
Integrated serial interface PG interface
Optional serial interface PG interface with PG submodule
Backplane bus S5 bus
Dimensions (w x h x d) 40.6 x 233.4 x 160 mm
Weight Approx. 1 kg

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5.3 CPU 928B -3UB21

This section contains the hardware description and technical specifications of

the CPU 928B -3UB21.
Details on programming the CPU 928B -3UB21 can be found in the
CPU 928B -3UB21 Programming Guide.

5.3.1 Technical Description

Application You can use the CPU 928B in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6). Up to four CPUs can be
used.
The CPU 928B is universally applicable, ensuring both very fast bit
processing and very fast word processing.
The following program processing levels are possible:
Cyclic
Time-controlled (9 different timebases)
Real-time controlled
Interrupt-driven (hardware interrupt)
Delayed
The programming language is STEP 5.

Design The electronic circuitry of the CPU 928B is on one PCB in the double
Eurocard format. The board provides the connection to the S5 bus via two
backplane connectors.
The front plate width is 1 1/3 standard plug-in stations.

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User Memory For storage of your program, user memory in the form of RAM is integrated
on the board. You can store up to 64 x 210 bytes of code and data blocks here.
For data blocks, the CPU 928B additionally has an integrated DB RAM of
46 3/4 x 210 bytes.

Memory Card As an external memory medium for user programs and user data, you can use
a memory card 374 with Flash EPROM.

PG Interface SI1 There are two independent interfaces on the front of the CPU 928B.
You can connect programmers and OPs to the first interface. This PG
interface SI1 is permanently installed on the CPU.
You can use PG interface SI1 either via the front connector of the CPU 928B
or via the front connector of the 923C coordinator module.

Note
Simultaneous operation of PG interface SI1 via the front connector of the
CPU 928B and of the coordinator is not possible. Electrically, it is merely a
PG interface which can be operated via two different terminals. Switching
the programmer online without a job request is already sufficient to operate
the interface. If you wish to utilize a second PG interface for connection of a
PG or OP, the connection must be made via the second PG interface with the
PG submodule.

Apart from PG interface SI1, the second interface SI2 can also be used as a
PG interface in parallel with the first one. You can only use the second PG
interface via the front connector of the PG submodule on the CPU 928B.
A detailed description of operations with the two PG interfaces can be found
in the CPU 928B -3UB21 Programming Guide.
The connection to the PG can be established with the CPU in any operational
state.

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Second Interface You can optionally use the second interface of the CPU 928B as:
SI2
A PG interface (for PG and operator panels)
Interface for the RK 512 computer link
Interface for data transmission with procedures 3964/3964R
Interface for data transmission with the “open driver”
Interface for data transmission via the SINEC L1 bus (from Version 6ES5
928-3UB12).
To utilize the second interface as the PG interface, you need the
RG submodule
You need one of the following interface submodules for the RK 512
computer link, for data transmission with procedures 3964/3964R and for
data transmission with the “open driver”:
V.24 submodule (RS 232C)
TTY submodule
RS422 A/485 submodule (only in the RS422 A mode).
To utilize the second interface for data transmission via the SINEC L1 bus,
you need the
SINEC L1 submodule (from Version 6ES5 928-3UB12).
The CPU 928B is delivered without an interface submodule. You can operate
the CPU 928B without an integral interface submodule. The opening to
accept a submodule in the front plate is closed by a cover. Only remove the
cover to fit an interface submodule.
A description of interface submodules can be found in Section 5.11, and the
order numbers in the ordering information.
A detailed description of the second interface can be found in the
CPU 928B/CPU 948 Communication Manual.

Process Interrupt There is an interrupt line in the PLC for each CPU. It can be used when the
Processing reaction to an event must occur with higher priority than the reaction to other
events.
To process an interrupt, cyclic program processing is interrupted and the
program stored in OB 2 (OB for interrupt processing) is inserted (refer to the
CPU 928B -3UB21 Programming Guide for further details).
This interrupt-driven program processing is only possible using an
interrupt-capable digital input module or a suitable operating CP/IP module.
No jumper setting on the CPU 928B is required. Please note, however, that
the usable interrupt line on the backplane bus depends on the CPU slot and
must be set accordingly on the I/O module (see Section 4.1).

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5.3.2 Installation and Startup

Jumper Settings

Note
All jumpers on the CPU 928B are required by the manufacturer for quality
testing. You must not change the jumper settings.

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90 clockwise.
5 Secure the upper locking bar.

Note
If you install the CPU 928B -3UB21 as the replacement for a double-width
CPU 928 or 928B, you must cover the slot which has been freed up with a
blanking plate.

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Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

Note
Only operate the CPU 928B with the submodule receptacle closed. You
close it either by fitting an interface submodule or with the cover supplied.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

CPU 928B
Fault Indicator LEDs (red)

QVZ

ADF
Receptacle for
ZYK User Memory Submodule

BASP

RUN LEDs (green)

Mode Switch

STOP LED (red)

RESET

Momentary-Contact Mode Switch

OVERALL
RESET
Interface Fault Indicator LED (red)
Interface 1

PG Interface, 15-Pin
Interface SI 1

Interface Fault Indicator LED (red)

SI2 Interface 2
Order Number and Version
6ES5928-3UB21

Receptacle for Interface Submodule

Interface SI 2
SIEMENS

Release Lever
Locking Pin

Figure 5-5 Front Plate of the CPU 928B-3UB21

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 928B processes the user program when the
green RUN LED is lit.

STOP The CPU 928B goes to the stop state when you switch from RUN to STOP.
The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized (both on the
CPU and on a RAM submodule).

Reset Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

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Status Indicators

RUN STOP Status

LED LED
on off The CPU is in the RUN state.
off on The CPU is in the STOP state. After a stop
request by switch or PG function, the STOP LED
is continuously lit because the transition to the
STOP state was requested by the user or, in
multiprocessor operation, by another CPU, and
was not caused by the CPU itself.
off off The CPU is in the INITIAL START or program
check state.
off slow The CPU is in the STOP state. The CPU has
flashing caused a transition to the STOP state (possibly
also for the other CPUs). If you set the mode
switch to STOP, the flashing LED becomes
continuously lit.
off rapid The CPU is in the STOP state. An overall reset
flashing has been requested. This request can be initiated
by the CPU itself or by operator action.

LEDs for Fault

Indication and
Signaling
QVZ LED
on During direct access or process image update, a module
addressed by the program no longer acknowledges although
either it has acknowledged in single-processor operation
upon reset of the CPU 928B in the area of the process
image (IB 0 to 127, QB 0 to 127) and has been entered as
present in the “9th track” (see Programming Guide,
CPU 928B -3UB21),
or it has
h been
b entered
t d iin DB 1 ((address
dd li
list)
t) iin
multiprocessor or single-processor operation and has been
recognized as present during the reset.
Possible causes
Module failure.
Module was pulled out during operation, in the STOP
state or in the Off state without a subsequent reset.

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ADF LED
on The user program has referenced an I/O address in the
process image under which no module is inserted.
ZYK LED
on The maximum cycle monitoring time has been exceeded.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state.

A detailed description of interrupt and error handling can be found in the

CPU 928B -3UB21 Programming Guide.

LED SI1 LED SI2 Cause

on on No communication possible at both interfaces.
Internal error.
on off SI1:
No communication possible.
Internal error.

SI2:
If used, interface is initialized and ready.
off on SI1:
Interface is initialized and ready.

SI2:
No communication possible.
Wrong interface submodule inserted or wrong
parameters for interface or internal error.
off off First interface and, if used, second interface are
initialized and ready.

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Startup The modules must be inserted at the correct slots in the central controller.
The backup battery must be fitted and in order for the CPU to start.

Overall Reset
Step Action Result
1 Set the mode switch to STOP
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED
(flashing rapidly)
– Red BASP2) LED
3 Hold the MC1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact
2) BASP: Command output inhibit

Reset
Step Action Result
1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

Restart You can also carry out a manual restart of the CPU 928B with the mode
switch. The CPU 928B -3UB21 Programming Guide will indicate when a
manual restart is permissible.

Step Action Result

3 Set the mode switch from – Red STOP LED goes off
STOP to RUN. – Green RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.3.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
24 V + 25 %/ –17 %
Current consumption at 5 V 0.5 A typical
Current consumption at 24 V 760 mA max.
Backup voltage 3.4 V
Backup current 20 mA typical (at 25 _C)
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
S flags 8192
Timers 256
Counters 256
Size of user memory 64 x 2!) bytes max., RAM
DB RAM 46 x 2!) bytes
Transmission rate of the serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256
Data blocks DB 256, of which 253 are freely available
Data blocks DX 256, of which 253 are freely available

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Organization blocks OB OB 1 to 39 (interfaces for operating system)

Integrated special function organization See Pocket Guide
blocks OB
Integrated serial interface PG interface
Optional serial interface Via interface submodules, optionally as V.24, TTY, RS 422A/485 or
PG interface,
SINEC L1 interface from Version 6ES5 928-3UB12
Backplane bus S5 bus
Dimensions (w x h x d) 20.32 x 233.4 x 160 mm
Weight Approx. 0.6 kg

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5.4 CPU 928B

This section contains the hardware description and technical specifications of

the CPU 928B.
Details on programming the CPU 928B can be found in the CPU 928B
Programming Guide.

5.4.1 Technical Description

Application You can use the CPU 928B in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6). Up to four CPUs can be
used.
The CPU 928B is universally applicable, ensuring both very fast bit
processing and very fast word processing:
Cyclic
Time-controlled (9 different timebases)
Real-time controlled
Interrupt-driven (hardware interrupt)
Delayed (from Version 6ES5 928-3UB12)
The programming language is STEP 5.

Design The electronic circuitry of the CPU 928B is on two PCBs (basic and
expansion boards) in the double Eurocard format. Both PCBs are screwed
together, linked via connectors, and must not be separated. The basic board
provides the connection to the S5 bus via two backplane connectors.
The front plate width is 2 2/3 standard plug-in stations.

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User Memory You require a user memory submodule (RAM or EPROM) for storage of your
program. You can store up to 64 x 210 bytes of code and data blocks here. For
data blocks, the CPU 928B additionally has an integrated DB RAM of 46 x
210 bytes.
A description of the memory submodules can be found in Sections 5.9 and
5.10; order numbers are given in the ordering information.

PG Interface SI1 There are two independent interfaces on the front of the CPU 928B.
You can connect programmers and OPs to the first interface. This PG
interface SI1 is permanently installed on the CPU.
You can use PG interface SI1 either via the front connector of the CPU 928B
or via the front connector of the 923C coordinator module.

Note
Simultaneous operation of PG interface SI1 via the front connector of the
CPU 928B and of the coordinator is not possible. Electrically, it is merely a
PG interface which can be operated via two different terminals. Switching
the programmer online without a job request is already sufficient to operate
the interface. If you wish to utilize a second PG interface for connection of a
PG or OP, the connection must be made via the second PG interface with the
PG submodule.

Apart from PG interface SI1, the second interface SI2 can also be used as a
PG interface in parallel with the first one. You can only use the second PG
interface via the front connector of the PG submodule on the CPU 928B.
A detailed description of operations with the two PG interfaces can be found
in the CPU 928B Programming Guide.
The connection to the PG can be established with the CPU in any operational
state.

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Second Interface You can optionally use the second interface of the CPU 928B as:
SI2
A PG interface (for PG and operator panels)
Interface for the RK 512 computer link
Interface for data transmission with procedures 3964/3964R
Interface for data transmission with the “open driver”
Interface for data transmission via the SINEC L1 bus (from Version 6ES5
928-3UB12).
To utilize the second interface as the PG interface, you need the
PG submodule.
You need one of the following interface submodules for the RK 512
computer link, for data transmission with procedures 3964/3964R and for
data transmission with the “open driver”:
V.24 submodule (RS 232C)
TTY submodule
RS422 A/485 submodule (only in the RS422 A module).
To utilize the second interface for data transmission via the SINEC L1 bus,
you need the
SINEC L1 submodule (from Version 6ES5 928-3UB12).
The CPU 928B is delivered without an interface submodule. You can operate
the CPU 928B without an integral interface submodule. The opening to
accept a submodule in the front plate is closed by a cover. Only remove the
cover to fit an interface submodule.
A description of interface submodules can be found in Section 5.11, and the
order numbers in the ordering information.
A detailed description of the second interface can be found in the CPU 928B
Communication Manual.

Process Interrupt There is an interrupt line in the PLC for each CPU. It can be used when the
Processing reaction to an event must occur with higher priority than the reaction to other
events.
To process an interrupt, cyclic program processing is interrupted and the
program stored in OB 2 (OB for interrupt processing) is inserted.
(Refer to the CPU 928B Programming Guide for further details.)
This interrupt-driven program processing is only possible using an
interrupt-capable digital input module or a suitable operating CP/IP module.
No jumper setting on the CPU 928B is required. Please note, however, that
the usable interrupt line on the backplane bus depends on the CPU slot and
must be set accordingly on the I/O module (see Section 4.1).

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5.4.2 Installation and Startup

Jumper Settings

Note
All jumpers on the CPU 928B are required by the manufacturer for quality
testing. You must not change the jumper settings.

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module. The
basic board and expansion board of the CPU 928B are one unit and must not
be separated.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90o clockwise.
5 Secure the upper locking bar.

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Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

Note
Only operate the CPU 928B with the submodule receptacle closed. You
close it either by fitting an interface submodule or with the cover supplied.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

CPU 928B

Receptacle for
User Memory Submodule

RUN
Mode Switch
STOP

LED (green)
RUN

STOP
LED (red)
RÜCKSETZEN
RESET

Momentary-Contact Mode Switch

URLÖSCHEN
OVERALLRESET

Fault Indicator LEDs (red)

QVZ SI1
ADF SI2 Interface Fault Indicator LEDs (red)
ZYK Interface 1
BASP Interface 2
SIEMENS 6ES5928-3UB12

SI2 Order Number and Release

SI1 Receptacle for Interface Submodule

Interface SI 2

PG Interface, 15-Pin
Interface SI 1
Release Lever
Locking Pin

Figure 5-6 Front Plate of the CPU 928B

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 928B processes the user program when the
green RUN LED is lit.

STOP The CPU 928B goes to the stop state when you switch from RUN to STOP.
The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized (both on the
CPU and on a RAM submodule).

RESET Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

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Status Indicators

RUN STOP Status

LED LED
on off The CPU is in the RUN state.
off on The CPU is in the STOP state. After a stop
request by switch or PG function, the STOP LED
is continuously lit because the transition to the
STOP state was requested by the user or, in
multiprocessor operation, by another CPU, and
was not caused by the CPU itself.
off off The CPU is in the INITIAL START or program
check state.
off slow The CPU is in the STOP state. The CPU has
flashing caused a transition to the STOP state (possibly
also for the other CPUs). If you set the mode
switch to STOP, the flashing LED becomes
continuously lit.
off rapid The CPU is in the STOP state. An overall reset
flashing has been requested. This request can be initiated
by the CPU itself or by operator action.

LEDs for Fault

Indication and
Signaling
QVZ LED
on During direct access or process image update, a module
addressed by the program no longer acknowledges although
either it has acknowledged in single-processor operation
upon reset of the CPU 928B in the area of the process
image (IB 0 to 127, QB 0 to 127) and has been entered as
present in the “9th track” (see Programming Guide, CPU
928B),
or it has
h been
b entered
t d iin DB 1 ((address
dd li
list)
t) iin
multiprocessor or single-processor operation and has been
recognized as present during the reset.
Possible causes
Module failure.
Module was pulled out during operation, in the STOP
state or in the Off state without a subsequent reset.

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ADF LED
on The user program has referenced an I/O address in the
process image under which no module is inserted.
ZYK LED
on The maximum cycle monitoring time has been exceeded.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state.

A detailed description of interrupt and error handling can be found in the

CPU 928B Programming Guide.

LED SI1 LED SI2 Cause

on on No communication possible at both interfaces.
Internal error.
on off SI1:
No communication possible. Internal error.

SI2:
If used, interface is initialized and ready.
off on SI1:
Interface is initialized and ready.

SI2:
No communication possible.
Wrong interface submodule inserted or wrong
parameters for interface or internal error.
off off First interface and, if used, second interface are
initialized and ready.

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Startup The modules must be inserted at the correct slots in the central controller.
The backup battery must be fitted and in order for the CPU to start.

Overall Reset
Step Action Result
1 Set the mode switch to STOP.
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED (flashing
rapidly)
– Red BASP2) LED
3 Hold the MC1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact
2) BASP: Command output inhibit

Reset
Step Action Result
1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

Restart You can also carry out a manual restart of the CPU 928B with the mode
switch. The CPU 928B Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

3 Set the mode switch from – Red STOP LED goes off
STOP to RUN. – Green RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.4.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
24 V + 25 %/ -17 %
Current consumption at 5 V 5 A typical
Current consumption at 24 V 760 mA max.
Backup voltage 3.4 V
Backup current 20 mA typical (at 25 _C)
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
S flags 8192
Timers 256
Counters 256
Size of user memory 64 x 2!) bytes max., EPROM or RAM
DB RAM 46 x 2!) byte
Transmission rate of the serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256
Data blocks DB 256, of which 253 are freely available
Data blocks DX 256, of which 253 are freely available

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Organization blocks OB OB 1 to 39 (interfaces for operating system)

Integrated special function organization See Pocket Guide
blocks OB
Integrated serial interface PG interface
Optional serial interface Via interface submodules, optionally as V.24, TTY, RS 422A/485 or
PG interface
SINEC L1 interface from Version 6ES5 928-3UB12
Backplane bus S5 bus
Dimensions (w x h x d) 40.64 x 233.4 x 160 mm
Weight Approx. 1 kg

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.5 CPU 928 -3UA21

This section contains the hardware description and technical specifications of

the CPU 928 -3UA21.
Details on programming the CPU 928 can be found in the CPU 928
Programming Guide.

5.5.1 Technical Description

Application You can use the CPU 928 in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6). Up to four CPUs can be
used.
The CPU 928 is universally applicable, ensuring both very fast bit processing
(optimized for open-loop tasks) and word processing (optimized for
closed-loop tasks).
The following program processing levels are possible:
Cyclical
Time-controlled (9 different timebases)
Interrupt-driven (hardware interrupt)

The programming language is STEP 5.

Design The electronic circuitry of the CPU 928 is on one PCB in the double
Eurocard format. The board provides the connection to the S5 bus via two
backplane connectors.
The front plate width is 1 1/3 standard plug-in stations.

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User Memory For storage of your program, user memory in the form of RAM is integrated
on the board. You can store up to 64 x 210 bytes of code and data blocks here.
For data blocks, the CPU 928 additionally has an integrated DB RAM of 46 x
210 bytes.

Note
The DB RAM is loaded with DB/DX blocks when the user memory is full.

Process Interrupt There is an interrupt line (IR) in the PLC for each CPU. It can be used when
Processing the reaction to one or more events must occur with higher priority than the
reaction to other events.
To process a process interrupt, cyclic program processing is interrupted and
the program stored in OB 2 (OB for interrupt processing) is inserted. (Refer
to the CPU 928 Programming Guide for further details.)
This interrupt-driven program processing is only possible using an
interrupt-capable digital input module (e.g. 6ES5 432-...) or a CP/IP module
which operates in this way.

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.5.2 Installation and Startup

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90o clockwise.
5 Secure the upper locking bar.

Note
If you install the CPU 928 -3UA21 as the replacement for a double-width
CPU, you must cover the slot which has been freed up with a blanking plate.

Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

CPU 928A
Fault Indicator LEDs (red)

QVZ

ADF
Receptacle for
ZYK User Memory Submodule

BASP

RUN LED (green)

Mode Switch

STOP LED (red)

RESET
Momentary-Contact Mode Switch
OVERALL
RESET
SI1 Interface Fault Indicator LED (red)

PG Interface, 15-Pin

Order Number and Version

SIEMENS ES5928-3UA21

Release Lever
Locking Pin

Figure 5-7 Front Plate of the CPU 928 -3UA21

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 928-3UA21 processes the user program when
the green RUN LED is lit.

STOP The CPU 928-3UA21 goes to the stop state when you switch from RUN to
STOP. The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized.

RESET Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

Status Indicators
RUN STOP Status
LED LED
on off The CPU is in the RUN state.
off on The CPU is in the STOP state. After a stop
request by switch or PG function, the STOP LED
is continuously lit because the transition to the
STOP state was requested by the user or, in
multiprocessor operation, by another CPU, and
was not caused by the CPU itself.
off off The CPU is in the INITIAL START or program
check state.
off slow The CPU is in the STOP state. The CPU has
flashing caused a transition to the STOP state (possibly
also for the other CPUs). If you set the mode
switch to STOP, the flashing LED becomes
continuously lit.
off rapid The CPU is in the STOP state. An overall reset
flashing has been requested. This request can be initiated
by the CPU itself or by operator action.

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LEDs for Fault

Indication and
Signaling
QVZ LED
on During direct access or process image update, a module
addressed by the program no longer acknowledges although
either it has acknowledged in single processor operation
upon reset of the CPU 928 in the area of the process
image (IB 0 to 127, QB 0 to 127) and has been entered as
present in the “9th track” (see Programming Guide,
CPU 928),
or it has
h been
b entered
t d iin DB 1 ((address
dd li
list)
t) iin
multiprocessor or single-processor operation and has been
recognized as present during the reset.
Possible causes
Module failure.
Module was pulled out during operation, in the stop state
or in the Off state without a subsequent reset.
ADF LED
on The user program has referenced an I/O address under which
no module is inserted.
ZYK LED
on The maximum cycle time has been exceeded.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state.

A detailed description of interrupt and error handling can be found in the

CPU 928 Programming Guide.

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

Startup The module must be inserted at the correct slot in the central controller. The
backup battery must be fitted and in order for the CPU to start.

Overall Reset
Step Action Result
1 Set the mode switch to STOP
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED (flashing
rapidly)
– Red BASP LED
3 Hold the MC1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact

Reset
Step Action Result
1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

Restart You can also carry out a manual restart of the CPU 928-3UA21 with the
mode switch. The CPU 928 Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

1 Set the mode switch from – Red STOP LED goes off
STOP to RUN. – Green RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.5.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533
Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
Current consumption at 5 V 0.5 A typical
Backup voltage 3.4 V
Backup current 20 mA typical (at 25 _C)
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
Timers 256
Counters 256
Size of user memory max. of 64 x 210 words, RAM
DB RAM 46 x 210 bytes
Transmission rate of serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256
Data blocks DB 256, of which 253 are freely available
Data blocks DX 256, of which 253 are freely available
Organization blocks OB OB 1 to 39 (interfaces for operating system)
Integrated special function organization See Pocket Guide
blocks OB
Dimensions (w x h x d) 20.32 x 233.4 x 160 mm
Weight Approx. 0.6 kg

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.6 CPU 928

This section contains the hardware description and technical specifications of

the CPU 928.
Details on programming the CPU 928 can be found in the CPU 928
Programming Guide.

5.6.1 Technical Description

Application You can use the CPU 928 in single and multiprocessor operation in the
S5-135U/155U central controller (see Chapter 6). Up to four CPUs can be
used.
The CPU 928 is universally applicable, ensuring both very fast bit processing
(optimized for open-loop tasks) and word processing (optimized for
closed-loop tasks).
The following program processing levels are possible:
Cyclical
Time-controlled (9 different timebases)
Interrupt-driven (hardware interrupt)

The programming language is STEP 5.

Design The CPU 928 comprises two PCBs (PCB 1 and PCB 2) in the double
Eurocard format, in a sandwich assembly. The two PCBs have plug-in
interconnections and are bolted together as a unit when delivered. PCB 2
serves as the basic board which provides the connection to the S5 bus via two
backplane connectors.
The front plate width is 2 2/3 standard plug-in stations.

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User Memory You require a user memory submodule (RAM or EPROM) for storage of your
program. You can store up to 64 x 210 bytes of code and data blocks here. For
data blocks, the CPU 928 additionally has an integrated DB RAM of 46 x 210
bytes.

Note
The DB RAM is loaded with DB/DX blocks when the RAM submodule is
full or an EPROM submodule is plugged in.

A description of the memory submodules can be found in Sections 5.9 and

5.10; order numbers are given in the ordering information.

Process Interrupt There is an interrupt line (IR) in the PLC for each CPU. It can be used when
Processing the reaction to one or more events must occur with higher priority than the
reaction to other events.
o process an interrupt, cyclic program processing is interrupted and the
program stored in OB 2 (OB for interrupt processing) is inserted.
(Refer to the CPU 928 Programming Guide for further details.)
This interrupt-driven program processing is only possible using an
interrupt-capable digital input module (e.g. 6ES5 432-...) or a CP/IP module
which operates in this way.

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.6.2 Installation and Startup

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.
The basic board and expansion board of the CPU 928 are one unit and must
not be separated.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.
3 Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.
4 Press the locking pin inwards on the bottom of the module and
rotate it 90o clockwise.
5 Secure the upper locking bar.

Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Release the locking pin of the module.
3 Press the release lever downwards and pull the module forwards
and out of the central controller.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

Receptacle for
User Memory Submodule

RUN Mode Switch

STOP
LED (green)
RUN
STOP LED (red)
RÜCKSETZEN
RESET
Momentary-Contact Mode Switch
URLÖSCHEN
OVERALL
RESET

Fault Indicator LEDs (red)

QVZ
ADF
ZYK
BASP
Order Number and Version
SIEMENS 6ES5928-3UA12

PG Interface, 15-Pin

Release Lever
Locking Pin

Figure 5-8 Front Plate of the CPU 928

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 928 processes the user program when the green
RUN LED is lit.

STOP The CPU 928 goes to the stop state when you switch from RUN to STOP.
The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized (both on the
CPU and on a RAM submodule).

RESET Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

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Status Indicators

RUN STOP Status

LED LED
on off The CPU is in the RUN state.
off on The CPU is in the STOP state. After a stop
request by switch or PG function, the STOP LED
is continuously lit because the transition to the
STOP state was requested by the user or, in
multiprocessor operation, by another CPU, and
was not caused by the CPU itself.
off off The CPU is in the INITIAL START or program
check state.
off slow The CPU is in the STOP state. The CPU has
flashing caused a transition to the STOP state (possibly
also for the other CPUs). If you set the mode
switch to STOP, the flashing LED becomes
continuously lit.
off rapid The CPU is in the STOP state. An overall reset
flashing has been requested. This request can be initiated
by the CPU itself or by operator action.

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

LEDs for Fault

Indication and
Signaling
QVZ LED
on During direct access or process image update, a module
addressed by the program no longer acknowledges although
either it has acknowledged in single processor operation
upon reset of the CPU 928 in the area of the process
image (IB 0 to 127, QB 0 to 127) and has been entered as
present in the “9th track” (see Programming Guide,
CPU 928),
or it has
h been
b entered
t d iin DB 1 ((address
dd li
list)
t) iin
multiprocessor or single-processor operation and has been
recognized as present during the reset.
Possible causes
Module failure.
Module was pulled out during operation, in the stop state
or in the Off state without a subsequent reset.
ADF LED
on The user program has referenced an I/O address under which
no module is inserted.
ZYK LED
on The maximum cycle time has been exceeded.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state.

A detailed description of interrupt and error handling can be found in the

CPU 928 Programming Guide.

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Startup The modules must be inserted at the correct slots in the central controller.
The backup battery must be fitted and in order for the CPU to start.

Overall Reset
Step Action Result
1 Set the mode switch to STOP
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED (flashing
rapidly)
– Red BASP LED
3 Hold the MC1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact

Reset
Step Action Result
1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

Restart You can also carry out a manual restart of the CPU 928 with the mode
switch. The CPU 928 Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

1 Set the mode switch from – Red STOP LED goes off
STOP to RUN. – Green RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.6.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
Current consumption at 5 V 3.5 A typical
Backup voltage 3.4 V
Backup current without user RAM 20 mA typical (at 25 _C)
submodule
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
Timers 256
Counters 256
Size of user memory max. of 64 x 210 words, EPROM or RAM
DB RAM 46 x 210 bytes
Transmission rate of serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256
Data blocks DB 256, of which 253 are freely available
Data blocks DX 256, of which 253 are freely available
Organization blocks OB OB 1 to 39 (interfaces for operating system)
Integrated special function Organization See Pocket Guide
blocks OB
Dimensions (w x h x d) 40.64 x 233.4 x 160 mm
Weight Approx. 1 kg

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5.7 CPU 922

This section contains the hardware description and technical specifications of

the CPU 922 (also known as the R processor).
Details on programming can be found in the CPU 922 Programming Guide.

5.7.1 Technical Description

Application You can use the CPU 922 in single and multiprocessor operation in the
S5-135U/155U CC (see Chapter 6). Up to four CPUs can be used.
The CPU 922 is particularly suitable for word processing (closed-loop
control and arithmetic calculation). Binary signal processing is also possible.
The following program processing levels are possible:
Cyclic
Time-controlled (1 timebase)
Interrupt-driven (hardware interrupt).

The programming language is STEP 5.

Design The module is designed as a plug-in PCB of double Eurocard format. The
module provides the connection to the S5 bus via two backplane connectors.

The front plate width is 1 1/3 standard plug-in stations.

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User Memory You require a user memory submodule (RAM or EPROM) for storage of your
program. You can store up to 64 x 210 bytes of code and data blocks here.
For data blocks, the CPU 922 additionally has an integrated DB RAM of
22 x 210 bytes.

Note
The DB RAM is only loaded with DB/DX blocks when the RAM submodule
is full or an EPROM submodule is inserted.

A description of the memory submodules can be found in Sections 5.9 and

5.10; order numbers are given in the ordering information.

Process Interrupt There is an interrupt line (IR) in the S5-135U/155U PLC for each CPU. It
Processing can be used when the reaction to one or more events must occur with higher
priority than the reaction to other events.
To process an interrupt, cyclic program processing is interrupted and the
program stored in OB 2 is inserted. Refer to the CPU 922 Programming
Guide for further details.
This interrupt-driven program processing is only possible using an
interrupt-capable digital input module (e.g. 6ES5 432-...) or a suitably
operating CP/IP module.

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5.7.2 Installation and Startup

Removing and
Inserting the
Module
Caution
! Switch off the power supply before removing or inserting the module.

Insertion Proceed as follows to insert the CPU in the central controller:

Step Action
1 Release the upper locking bar of the central controller.
2 Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.
3 Push the module evenly into the guide rail.
4 Secure the upper locking bar.

Removal Proceed as follows to remove the CPU:

Step Action
1 Release the upper locking bar of the central controller.
2 Use the grips and gentle upward and downward motion to pull the
CPU forwards out of the CC.

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Controls and The controls and indicators are arranged on the front plate of the CPU
Indicators module:

Grip

Receptacle for
User Memory Submodule

RUN
Mode Switch
STOP
LED (green)
RUN
STOP
LED (red)
RÜCKSETZEN
RESET

Momentary-Contact Mode Switch

URLÖSCHEN
OVERALL
RESET

Fault Indicator LEDs (red)

QVZ
ADF
ZYK
BASP
6ES5922-3UA11

Order Number and Version

SIEMENS

PG Interface, 15-Pin

Grip

Figure 5-9 Front Plate of the CPU 922

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Mode Switch The mode switch has two settings:

RUN In the RUN setting, the CPU 922 processes the user program when the green
RUN LED is lit.

STOP The CPU 922 goes to the stop state when you switch from RUN to STOP.
The red STOP LED then lights up.

Momentary- You can initiate the Overall Reset, Reset and Restart functions with the
Contact Mode momentary-contact mode switch:
Switch

OVERALL RESET Momentary-contact switch down

With an overall reset, all RAM areas are erased and initialized (both on the
CPU and on a RAM submodule).

Reset Momentary-contact switch up

During a reset, all flags, timers, counters and the process image will be
erased. OB 20 will be invoked. Processing of the user program will start from
the beginning again.

Restart Momentary-contact switch at midpoint

With a restart, processing of the user program will continue from the point of
interruption. The statuses of flags, timers, counters and the process image are
retained during stoppage of the CPU.

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Status Indicators

RUN STOP Status

LED LED
on off The CPU is in the RUN state.
off on The CPU is in the STOP state. After a stop
request by switch or PG function, the STOP LED
is continuously lit because the transition to the
STOP state was requested by the user or, in
multiprocessor operation, by another CPU, and
was not caused by the CPU itself.
off off The CPU is in the INITIAL START or program
check state.
off slow The CPU is in the STOP state. The CPU has
flashing caused a transition to the STOP state (possibly
also for the other CPUs). If you set the mode
switch to STOP, the flashing LED becomes
continuously lit.
off rapid The CPU is in the STOP state. An overall reset
flashing has been requested. This request can be initiated
by the CPU itself or by operator action.

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LEDs for Fault

Indication and
Signaling
QVZ LED
on During direct access or process image update, a module
addressed by the program no longer acknowledges although
either it has acknowledged in single processor operation
upon reset of the CPU 922 in the area of the process
image (IB 0 to 127, QB 0 to 127) and has been entered as
present in the “9th track” (see Programming Guide,
CPU 922),
or it has
h been
b entered
t d iin DB 1 ((address
dd li
list)
t) iin
multiprocessor or single-processor operation and has been
recognized as present during the reset.
Possible causes
Module failure.
Module was pulled out during operation, in the stop state
or in the Off state without a subsequent reset.
ADF LED
on The user program has referenced an I/O address under which
no module is inserted.
ZYK LED
on The maximum cycle time has been exceeded.
BASP LED
on Command output is inhibited and the digital outputs will be
directly switched to the safe state.

A detailed description of interrupt and error handling can be found in the

CPU 922 Programming Guide.

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Startup The modules must be inserted at the correct slots in the central controller.
The backup battery must be fitted and in order for the CPU to start.

Overall Reset
Step Action Result
1 Set the mode switch to STOP
2 Switch the system voltage on. The following LEDs must light
up on the CPU:
– Red STOP LED (flashing
rapidly)
– Red BASP LED
3 Hold the MC1) switch in the The red STOP LED is now
OVERALL RESET setting permanently lit.
and simultaneously set the
mode switch from STOP to
RUN.
1) MC: Momentary-contact

Reset
Step Action Result
1 Set the mode switch to STOP.
2 Hold the MC switch in the – Red STOP LED goes off
RESET setting and – Green RUN LED lights up
simultaneously set the mode – Red BASP LED goes off
switch from STOP to RUN.
The CPU is now in the RUN state
but still has no user program.

Restart You can also carry out a manual restart of the CPU 922 with the mode
switch. The CPU 922 Programming Guide will indicate when a manual
restart is permissible.

Step Action Result

1 Set the mode switch from – Red STOP LED goes off
STOP to RUN. – Green RUN LED lights up
– Red BASP LED goes off

For maintenance purposes or in the event of a fault, this startup without user
program in single-processor operation can serve to establish whether the CPU
is operating without errors.

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5.7.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533
Degree of protection IP 00
Climatic ambient conditions See Technical Specifications of the S5-135U/155U CC
Mechanical ambient conditions See Technical Specifications of the S5-135U/155U CC
Noise immunity, electromagnetic See Technical Specifications of the S5-135U/155U CC
compatibility (EMC)
Supply voltage 5V$5%
Current consumption at 5 V 2.2 A typical
Backup voltage 3.4 V
Backup current without user RAM 20 mA typical (at 25 _C)
submodule
P area O area IM3 area IM4 area Total
Digital inputs with process image 1024 max. – – – 1024 max.
Digital inputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog inputs 64 max. 128 max. 128 max. 128 max. 448 max.
Digital outputs with process image 1024 max. – – – 1024 max.
Digital outputs without process image 1024 max. 2048 max. 2048 max. 2048 max. 7168 max.
or analog outputs 64 max. 128 max. 128 max. 128 max. 448 max.
Flags 2048
Timers 128
Counters 128
Size of user memory max. of 64 x 210 words, EPROM or RAM
DB RAM 22 x 210 bytes
Transmission rate of serial PG interface 9600 bps
Program blocks PB 256
Sequence blocks SB 256
Function blocks FB 256
Function blocks FX 256
Data blocks DB 256, of which 253 are freely available
Data blocks DX 256, of which 253 are freely available
Organization blocks OB OB 1 to 39 (interfaces for operating system)
Integrated special function See Pocket Guide
Organization blocks OB
Dimensions (w x h x d) 20.32 x 233.4 x 160 mm
Weight Approx. 0.5 kg

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5.8 374 Flash EPROM Cards

This section provides a summary

of the use of the 374 flash EPROM cards (known as the 374 memory
cards in the following) in the CPU 948, CPU 928B-3UB21 and
CPU 928-3UA21
and of the technical specifications.

5.8.1 Technical Description

The 374 memory card serves as a storage medium for user programs and user
data. It contains electrically erasable flash EPROMs.
The 374 memory card is available in the following capacities:
256 Kbytes
512 Kbytes
1024 Kbytes
2048 Kbytes
4096 Kbytes

Ordering The order numbers for the SIMATIC S5 memory cards can be found in the
Information ordering information.

5.8.2 Notes on Operation

Programming a You can program and erase the 374 memory card off-line on the SIMATIC S5
Memory Card programmers. The link to the PG is provided by a special connector or
programming adapter, into which the memory card is inserted. A description
of EPROM programming can be found in the STEP 5 manual.

Inserting and Memory cards can be inserted and removed at any time, even whilst the CPU
Removing a is running, as long as they are not being accessed (see the CPU 948
Memory Card Programming Guide).

Loading Data The contents of the memory cards are only copied automatically into the
internal RAM of the CPU upon overall reset of the CPU.

Erasing a Memory Memory cards are electrically erasable.

Card

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5.8.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Supply voltage during a read operation +5 V $ 5 %

Current consumption during a read 200 mA max.
operation (at 5 V)
Access time tACC 200 ns
Operating temperature 0 to 55 °C
Storage temperature – 40 °C to 70 °C
Relative humidity Up to 95 % at 25 °C, no condensation
Number of programming cycles 10,000
Dimensions (H x D x W) 54 x 85 x 5 mm
Weight Approx. 50 g

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5.9 376 Memory Submodules

This section provides a summary

of the use of the 376 memory submodules in the 928B (up to -3UB12),
928 (up to -3UA12) and 922 CPUs,
and of the technical specifications.

Note
You cannot use the memory submodule 376 for the CPU 928B from version
3UB21, nor for the CPU 928 from version 3UA21.

5.9.1 Technical Description

The 376 memory submodules serve as a storage medium for user programs
and user data. They contain UV-erasable CMOS EPROMs. 376 memory
submodules are available in the following capacities:
16 Kbytes
32 Kbytes
64 Kbytes

Ordering The order numbers for the SIMATIC S5 memory submodules can be found in
Information the ordering information.

5.9.2 Notes on Operation

Programming You program the 376 memory submodules off-line on the SIMATIC S5
the Memory programmers. The link to the PG is provided by the EPROM programming
Submodules interface integrated in the PG.
A description of EPROM programming can be found in the STEP 5 manual.
Use an adhesive label to cover the EPROM window (erasing window) after
programming.

Caution
! CMOS memory submodules are destroyed by programming with the wrong
programming number. A list of valid order numbers (MLFBs) and
programming numbers can be found in your STEP 5 software in the EPROM
package.

Inserting a Before inserting a 376 memory submodule in the module receptacle of the
Memory CPU,
Submodule
set the CPU mode switch to STOP
and switch off the PLC (Power Off).

Erasing a Memory 376 memory submodules can be erased with a UV eraser. Before erasing,
Submodule remove the plastic cover and the adhesive label from the erasing window.

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5.9.3 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Supply voltage during a read operation +5 V " 5 %

Current consumption during a read 200 mA max.
operation (at 5 V)
Access time tACC 250 ns
Operating temperature 0 to 55 °C
Storage temperature – 40 °C to 70 °C
Relative humidity Up to 95 % at 25 °C, no condensation
Number of programming cycles 10,000
Dimensions (H x D x W) 54 x 58 x 14 mm
Weight Approx. 40 g

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5.10 377 Memory Submodules

This section provides a summary

of the use of the 377 memory submodules in the 928B (up to -3UB12),
928 (up to -3UA12) and 922 CPUs,
and of the technical specifications.

Note
You cannot use the memory submodule 377 for the CPU 928B from version
3UB21, nor for the CPU 928 from version 3UA21.

5.10.1 Technical Description

377 memory submodules (RAM submodules) are available with or without

battery backup in the following capacities:

Without Battery Backup With Battery Backup

16 Kbytes 64 Kbytes
32 Kbytes
64 Kbytes

The order numbers for the 377 memory submodules can be found in the
ordering information.

5.10.2 Notes on Operation

Loading RAM 377 memory submodules are loaded online (from the PG) in the CPU. A
Submodules description of loading the individual submodules or the entire program can
be found in the STEP 5 manual.

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5.10.3 RAM Submodules with Battery Backup

RAM submodules with battery backup are used when the contents of the
memory submodules must be retained even outside the CPU. You can then
remove the battery-backed 377 memory submodule from the CPU without
loss of data. An integral battery protects the submodule from data loss, and
ensures that the data will be retained until the RAM submodule is used again.

Note
The RAM submodule with battery backup is not a substitute for an EPROM
submodule. The contents can be overwritten by a STEP 5 program. The
battery can discharge if the submodule is at standby for a long time. This can
result in the loss of data.

To protect the battery, the 377 memory submodule has a cover on both sides.
The button cell battery with terminal lugs is secured on the submodule with
screws on two holders. When the grip is swivelled in, you can see the battery
fault LED.

Operational States There are three different operational states for the RAM submodule with
battery backup:

Normal Operation In this state

the battery-backed RAM submodule is in the CPU;
the programmable controller (PLC) is switched on (Power On);
and neither the backup battery of the PLC nor the battery of the RAM
submodule is supplying power.

Note
The RAM submodule must not be inserted or removed during the RUN state;
this can result in data corruption, loss of data or CPU malfunctions.

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Standby Operation In this standby state of the unit

the battery-backed RAM submodule is in the CPU;
the PLC is switched off (Power Off);
the backup battery of the PLC is providing backup of the RAM
submodule;
the submodule battery is not supplying power.

Note
It is only possible to insert and remove the RAM submodule in this state
without data corruption.

If the backup battery in the PLC fails in this state, the submodule battery
provides backup of the RAM submodule. This prevents loss of data.

Submodule In this standby state of the submodule

Standby
the RAM submodule has been removed from the CPU;
the submodule battery is providing backup of the RAM submodule;
the contents of the battery-backed RAM are retained.

Battery Monitoring The battery of the battery-backed RAM submodule is monitored. When the
and Battery Fault RAM submodule goes to normal operation (battery-backed RAM is in the
CPU, supply voltage of the PLC is switched on), the battery monitor on the
submodule detects the following faults:
Submodule battery is not present.
Submodule battery is faulty (voltage less than 2.6 V).
The red battery fault LED on the front of the submodule is continuously lit.

Note
A temporary voltage drop of the submodule battery in the standby state, e.g.
caused by storage below 0 oC or a battery change, is not detected by the
battery monitor if the voltage dip is corrected by plugging in the RAM
submodule and switching on the PLC. However, the voltage dip may have
led to a loss or corruption of RAM submodule data.

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Inserting or Before the RAM submodule with battery backup is started for the first time,
Replacing the you must insert the battery provided. This is delivered separately to protect it
Backup Battery from premature discharge. Proceed according to the following steps:

Step Action
1 Open the upper side of the cover by releasing the snap-on catch.
Grasp the cover within the clearance from the PCB and pull it up.
2 Insert the submodule battery and secure it with a screw on the left
and on the right. Ensure correct polarity (+/-).
3 Close the cover again.

Battery

M 2.5 Screw

Battery
Fault LED

Grip

Figure 5-10 Mounting Location for Backup Battery

Caution
! Improper replacement of the battery can result in explosion hazard.
It should only be replaced by the same type or an equivalent one
recommended by the manufacturer. Used batteries should be disposed of
according to the manufacturer’s instructions.

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Proceed as follows to replace the submodule battery:

Step Action
1 Open the upper side of the cover by releasing the snap-on catch.
2 Slacken the screws on the left and right of the battery.
3 Replace the submodule battery and secure the new battery with
screws, observing the polarity.
4 Close the cover again.

Using the RAM

Submodule with
Battery Backup

Caution
! EPROM-battery-backed RAM submodules must not be programmed via the
EPROM interface of the PG, otherwise they can be destroyed.
Before inserting or removing the RAM submodule into or out of the CPU,
switch the PLC power supply off: this is to ensure that data of the RAM
submodule are not corrupted.

Inserting Initial situation:

Unprogrammed
The CPU is in the programmable controller.
Memory
Submodules The power supply of the PLC is switched off.
The mode switch of the CPU is at STOP.

Step Action
1 First insert the battery in the RAM submodule.
2 Insert the RAM submodule in the CPU.
3 Switch the power supply of the programmable controller on.
4 Carry out an overall reset.
5 Connect your programmer (PG) to the CPU.
6 When the user program has been loaded into the RAM
submodule, reset the CPU.

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Inserting Since the contents of the inserted RAM submodule are erased with each
Programmed overall reset, proceed as follows when using programmed RAM submodules
Memory whose contents are not to be erased:
Submodules
Initial situation:
The CPU is in the programmable controller.
The power supply of the PLC is switched off.
The mode switch of the CPU is at STOP.

Step Action
1 Insert another, unprogrammed memory submodule in the CPU.
2 Switch the power supply on.
3 Carry out an overall reset.
4 Switch the power supply off.
5 Remove the unprogrammed memory submodule.
6 Insert the programmed memory submodule.
7 Switch the power supply on.
8 Carry out a reset.

Removing Memory Before removing the RAM submodule, check whether the battery is still in
Submodules order: if the battery fault LED on the RAM submodule is lit whilst the PLC
supply voltage is switched on, the contents of the RAM submodule will be
lost when it is removed.
Initial situation:
The CPU is in the RUN state.

Step Action
1 Set the CPU mode switch to STOP.
2 Switch the power supply off.
3 Remove the memory submodule.

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5.10.4 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

All 377 Memory

Submodules

Supply voltage +5 V  5 %
Operating temperature 0 to 55 °C
Storage temperature – 40 °C to 70 °C
Relative humidity Up to 95 % at 25 °C, no
condensation
Number of programming cycles 10,000
Dimensions (H x D x W) 54 x 58 x 14 mm
Weight Approx. 40 g / 60 g

Submodules
without Battery
Backup
Current consumption 100 mA max. (16/64 Kbytes)
(at 5 V) 200 mA max. (32 Kbytes)
Backup current/standby Approx. 20 mA typ. (16/64 Kbytes)
Approx. 40 mA typ. (32 Kbytes)
Backup voltage/ 2.7 V to 3.6 V
UCMOS
Access time tACC 150 ns (16/64 Kbytes)
200 ns (32 Kbytes)

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Submodules with
Battery Backup

Current consumption 140 mA max.

(at 5 V)
Backup current 13 mA typ.
Backup voltage/ 2.7 V to 3.6 V
UCMOS
Submodule battery Lithium button cell 3 V/200 mAh Type CR 2430
(LF-1/2W) from VARTA
Backup time 1 year min. at 25 oC
Access time tACC 150 ns

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5.11 Interface Submodules

The second serial interface of the CPU 928B can be optionally used as:
A PG interface (for PG and operator panels)
An interface for the RK 512 computer link
An interface for data transmission with procedures 3964/3964R
An interface for data transmission with the “open driver”
An interface for data transmission via the SINEC L1 bus (from Version
6ES5 928-3UB12)

The second serial interface of the CPU 948 can be used as:
A PG interface (for PG and operator panels)

Using the Interface

Submodules

To use the second interface as ... ... you require ...

a PG interface the PG submodule
an interface for data transmission the V.24 (RS 232C)
with or TTY
RK 512 computer link, or RS 422 A/485 submodule
procedures 3964/3964R (only in RS 422 A mode)
or “open driver”
an interface for data transmission the SINEC L1 submodule
via the SINEC L1 bus

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5.11.1 Installing and Removing the Interface Submodules

To use an interface submodule, you must first install it in the CPU (outside
the central controller).

Caution
! Switch off the power supply of the programmable controller before
removing the CPU.

Installation Install your interface submodule in the following steps:

Step Action
1 Check the jumper settings of your interface submodule:

PG submodule See Section 5.11.2

V.24 submodule See Section 5.11.3
TTY submodule See Section 5.11.4
RS422 A/485 submodule See Section 5.11.5
SINEC L1 submodule See Section 5.11.6.

When the interface submodule is delivered, the jumpers are

already set so that you can usually fit it immediately.
2 Switch off the power supply of your PLC.
3 Remove the CPU.
4 Remove both screws on the submodule slot.
5 Remove the coverplate.
6 Insert the interface submodule through the front plate into the
plug-in connector (components in the same direction as the CPU).
7 Secure the submodule with the two screws (see step 4).
8 Insert the CPU in the central rack.
9 Switch on the power supply of your PLC again.

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Removal Remove your interface submodule in the following steps:

Step Action
1 Switch off the power supply of your PLC.
2 Remove the CPU from the central controller.
3 Slacken the two locking screws of the submodule and pull it out
of the receptacle.
4 Fit another submodule (as already described) or close the
receptacle with its cover. Use the fixing screws of the submodule.
5 Insert the CPU in the central controller.
6 Switch the power supply of your PLC on again.

Note
Since the interface module is secured to the CPU with screws, interference
pulses are given a path to ground via the shield of the CPU.

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5.11.2 PG Submodule

By means of the PG submodule, you can use the second interface of the CPU
as the PG interface and equally privileged with the first interface.

Application The PG submodule can be inserted in the following CPUs:

Interface Submodule For Use With

PG submodule CPU 928B
CPU 948

Circuitry The PG submodule is equipped with a transmitter and a receiver for 20 mA

current loop signals. The loop current is always fed in from the PG. The
following figure shows the circuitry for current loop signals of the standard
cable:

+ +
Receiver
– –
–
Transmitter
+
– –
Transmitter
+ +
CPU with +
PG Module Receiver

Current Direction Arrows –

PG

Figure 5-11 PG Submodule: Loop Current Direction

Data Transmission The rate for data transmission via the PG interface is always 9600 bps.
Rate

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Pin Assignments Given in the following table are the pin assignments of the 15-pin
of the PG subminiature D-type connector in the front plate of the PG submodule:
Submodule

Pin Designation Current Remarks

Direction
1 Housing/GND/GNDext
2 – RxD ³
8 3 VPG + 5 V_
15
4 + 24 V from bus
5 0 V GND/GNDint
6 + TxD ²
7 – TxD ³
8 Housing/GND/GNDext
9
1 9 + RxD ²
10 24 V GND ² Current return
11 20 mA ³ Current source, transmitter
12 GND/GNDint
13 20 mA ³ Current source, receiver
14 VPG + 5 V_
15 0 V GND/GNDint
²: From partner to CPU
³: From CPU to partner

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Jumper Settings When the PG submodule is delivered, the jumpers are set as shown in the
on the PG following figure. As a rule, therefore, you can use the PG submodule
Submodule immediately.

Front Connector
15-Pin Sub. D-Type

J1
3
2

Backplane Connector

Figure 5-12 PG Submodule: Jumper Settings when Delivered

J1 is set to select whether the PG submodule is to be operated in the

CPU 928B/CPU 948 or in the CPU 945:

1 2 3
J1 Operation in CPU 928B/CPU 948
Operation in CPU 945

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Standard Standard cables for connecting the PG submodule in the CPU to the PG are
Connecting Cable available from Siemens in various lengths, up to 1000 m.
for the PB
Order numbers and lengths can be found in the ordering information.
Submodule

Connecting cable: CPU - PG

CPU SI1 or
PG 675/685 or
SI2 with PG Submodule Adapter to PG 7xx
9 + RxD + 20 mA 22
+12V
Receiver 2 – RxD + TxD 10

– TxD Transmitter
12
– 20 mA 23
–12V
+ 20 mA 20 +12V
+ RxD 6

8 Receiver
6 + TxD – RxD
Transmitter 21
7 – TxD – 20 mA
–12V
8 24
1 Shield 25
Housing, GND Housing, GND
K1 17

K2 4

K3 3

2
Transmission
Rate Setting

Figure 5-13 PG Submodule: Standard Connecting Cable

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5.11.3 V.24 Submodule

The V.24 submodule is used with the RK 512 computer link, data
transmission with procedures 3964/3964R, data transmission with the “open
driver.”

Application The V.24 submodule can be inserted in the following CPU:

Interface Submodule... For use With ...

V.24 submodule CPU 928B
CPU 948

Circuitry The following figure shows the circuitry for the V.24 interface (transmit and
receive lines):

Device 1 Device 2

GND GND

TxD TxD

RxD RxD

Shield Shield

Figure 5-14 V.24 Interface

Apart from the transmit and receive lines, the V.24 submodule has a number
of control and signaling lines to CCITT Recommendation V.24/V.28.
However, these control signals are not needed and not used for the standard
procedures of communication types RK 512, 3964/3964R and “open driver.”
(Exception: RTS/CTS with the “open driver”).
The following applies to V.24 signals:
Logic 0 is represented by a voltage Uw +3V
Logic 1 is represented by a voltage Uv –3V
If you fabricate the connecting cables yourself, note that unused inputs at the
partner station may have to be connected to quiescent potential. Further
details can be found in the appropriate manuals and in CCITT
Recommendations V.24/V.28.

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Data Transmission A maximum of 19200 bps is permissible for data transmission with the V.24
Rate submodule.

Pin Assignments The following table shows the pin assignments of the 25-pin subminiature
of the V.24 D-type connector in the front plate of the V.24 submodule:
Submodule

Pin Des. to Des. to Int. Abbre- Input/ Remarks

DIN CCITT viation Output
66020 V.24
13 1 Shield
25
2 D1 103 TxD Output
3 D2 104 RxD Input
4 S2 105 RTS Output
5 M2 106 CTS Input
6 M1 107 DSR Input
7 E2 102 GND
8 M5 109 DCD Input
18 PS3 141 Output Not supported
14 20 S1.2 108.2 DTR Output
1
22 M2 125 RI Input
23 S4 111 Output
25 PM1 142 Input Not supported

The signal numbering complies with DIN 66020 (V.24/RS 232C); the signal
designations are the abbreviations used internationally (RS 232C).

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Jumper Settings of When the V.24 submodule is delivered, the jumpers are set as shown in the
the V.24 following figure. As a rule, you can therefore use the V.24 submodule
Submodule immediately.

Front Connector
25-Pin Sub. D-Type

Br9
Br6
J3
Br5
J4
J2
Br8
J1
Br7

Backplane Connector

Figure 5-15 V.24 Submodule: Jumper Settings when Delivered

You can change over the polarity of the transmit and receive data with
jumpers J3 and J5.

1 2 3
J3 Transmit data in normal polarity
Transmit data negated

J5 Receive data in normal polarity

Received data negated

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With jumper J6, you can set all V.24 receivers so that you only require
positive-going signals (positive voltage region).

1 2 3
J6 All received signals must be at
V.24 signal level.
All received signals can be in the
positive voltage region.

With the submodule 0AA23, bridge 6 has no function; all signals can lie in
the positive range (corresponds to bridge setting 2-3).
With jumper J9, CTS can be set permanently to quiescent potential, i.e.
switched through from the front connector.

1 2 3
J9 CTS at quiescent potential CTS at
pin 5

Standard Connect- Standard cables for connecting the V.24 submodule of the CPU to the partner
ing Cables of the station are available from Siemens in various lengths, up to16 m.
V.24 Submodule
Order numbers and lengths can be found in the ordering information.

Connecting cable for CPU, CP 524, CP 525, CP 544

CPU, CP524/525, CP544 CPU, CP524/525, CP544

Receiver Transmitter
3 RxD TxD 2

Transmitter Receiver
2 TxD RxD 3

7 7

1 Shield 1
Housing, GND Housing, GND

Figure 5-16 V.24 Submodule: Connecting Cable for CPU, CP 524, CP 525, CP 544

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Connecting cable: CPU - N10 modem

CPU Modem N10

Receiver Transmitter
3 RxD TxD 3

Transmitter Receiver
2 TxD RxD 2

7 7

1 Shield 1
Housing,GND
RTS 4
CTS 5

Figure 5-17 V.24 Submodule: Connecting Cable for CPU - N10 Modem

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Connecting cable: CPU - DR 210/211, DR 230/231

You can use this connecting cable both with the V.24 and with the TTY
submodule. Ensure that you have the same type of interface in the CPU and
in the printer.

CPU DR 210/211, DR 230/231

13 21

14 18

10 10
TTY Assignments TTY Assignments

19 9

5 CTS Busy 25

Receiver Transmitter
3 RxD TxD 2

Transmitter Receiver
2 TxD RxD 3

7 7

1 Shield 1
Housing, GND Housing

Figure 5-18 V.24 Submodule: Connecting Cable for CPU - DR 210/211, DR 230/231

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Wiring of a connecting cable for RTS/CTS flow control

CPU CPU

Receiver Transmitter
3 RxD TxD 2

Transmitter Receiver
2 TxD RxD 3

RTS 4 4 RTS

CTS 5 5 CTS

7 7

1 Shield 1
Housing, GND Housing, GND

Figure 5-19 Example of a Connecting Cable: CPU - CPU for RTS/CTS Flow Control

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.11.4 TTY Submodule

The TTY submodule is for use with the RK 512 computer link, data
transmission with procedures 3964/3964R, data transmission with the “open
driver.”
The TTY submodule complies with DIN 66 258, Part 1.

Application The TTY submodule can be inserted in the following CPU:

Interface Submodule ... For Use With ...

TTY submodule CPU 928B
CPU 948

Circuitry The TTY submodule is equipped with a transmitter and receiver for 20 mA
current loop signals. Shown in the following figure is the typical circuitry for
current loop signals.

– +
Transmitter Receiver
+ –
+ –

– +

+
–
Receiver Transmitter
+ –

Current Direction Arrows

Figure 5-20 TTY Submodule: Loop Current Direction

The loop current can be fed in both by the TTY submodule and by the
partner station. Only the side supplying the current is non-floating.

Caution
! With longer line lengths, you should arrange your line so that the transmitter
always supplies the current.

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The TTY submodule feeds in the current (20 mA) via jumpers in the
connector of the standard connecting cable. The 24 V required for generation
of loop current is taken from the power supply of the PLC. In the quiescent
state, with a correct loop current connection, there should be a flow of 20 mA
(= logic 1). When the current is interrupted there is a logic 0.
The following applies to the TTY signals:
Logic 0 is represented by: no current
Logic 1 is represented by: current (20 mA)

Data Transmission A maximum of 9600 bps is permissible for data transmission with the TTY
Rate submodule.

Pin Assignments Shown in the figure are the pin assignments of the 25-pin subminiature
of the TTY D-type connector in the front plate of the TTY submodule:
Submodule

Pin Designa- Current Remarks

tion direction
13
25 1 Shield
9 24 V This connection is changed over between
external 24 V internal and 24 V external with
jumper J3 (see next page).
10 + TxD ²
12 + 20 mA ³ Current source, transmitter
13 + RxD ²
14 – RxD ³
14 16 + 20 mA ³ Current source, receiver
1
19 – TxD ³
21 – 20 mA ² Current return
24 – 20 mA ² Current return
² : Input
³ : Output

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Jumper Settings When the TTY submodule is delivered, the jumpers are set as shown in the
on the TTY following figure. As a rule, therefore, you can use the TTY submodule
Submodule immediately.

Front Connector
25-Pin Sub. D-Type

J3
3 2 1

J4 J2 J1
1

Backplane Connector

Figure 5-21 TTY Submodule: Jumper Settings when Delivered

The polarity of the transmit and receive data is changed over with jumpers J1
and J2:
1 2 3
J1 Transmit data negated
Transmit data in normal polarity

J2 Receive data in normal polarity

Receive data negated

The 24 V source voltage for generation of the loop current can be allocated
with jumper J3:
1 2 3
J3 24 V will be applied from Pin 9 of
the sub. D connector
24 V will be applied from the
backplane connector (internally)

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Standard Connect- Standard cables for connecting the TTY submodule in the CPU to the partner
ing Cables for the station are available from Siemens in various lengths, up to 1000 m.
TTY Submodule
Order numbers and lengths can be found in the ordering information.
Connecting cable for CPU, CP 524, CP 525, CP 544

CPU, CP 524/525, CP 544 CPU, CP 524/525, CP544

13 +RxD –TxD 19

Receiver Transmitter
14 –RxD +TxD 10

21 –20mA +20mA 12
+24V
12 +20mA –20mA 21
+24V

10 +TxD –RxD 14

Transmitter Receiver
19 –TxD +RxD 13

1 Shield 1
Housing, GND Housing, GND

Figure 5-22 TTY Submodule: Connecting cable for CPU, CP 524, CP 525, CP 544

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Connecting Cable: CPU - IM 512

To generate loop current, the IM 512 must be supplied with 24 V at the
subminiature D-type connector in the front plate.

CPU IM 512

13 + RxD – TxD 14

Receiver Transmitter
14 – RxD + TxD 2
+ 20mA 5 + 24 V

– 20mA 17

+ 20mA 6 + 24 V

– 20mA 18

10 + TxD – RxD 15

Transmitter Receiver
19 – TxD + RxD 3

1 Shield
Housing, GND Housing

23
2
2 11
24
Device ID
12
25
0
2
13

Figure 5-23 TTY Submodule: Connecting Cable CPU - IM 512

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Connecting cable: CPU - DR 210/211, DR 230/231

You can use this connecting cable with both the TTY and the V.24
submodule. Ensure that you have the same type of interface in the CPU and
in the printer.

CPU DR 210/211, DR 230/231

13 +RxD +20mA 21
+24V
Receiver
14 –RxD +TxD 18

Transmitter

10 +TxD +20mA 10

Transmitter +24V
19 –TxD +RxD 9

Receiver

5 25

3 2

V.24 Assignments V.24 Assignments

2 3

7 7

1 Shield 1
Housing,GND Housing

Figure 5-24 TTY Submodule: Connecting Cable CPU - DR 210/211, DR 230/231

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

5.11.5 RS422 A/485 Submodule

The RS422 A/485 submodule is for use exclusively in the RS422 A mode
with the RK 512 computer link, data transmission with procedures
3964/3964R, data transmission with the “open driver.”

Application The RS422 A/485 submodule can be inserted in the following CPU:

Interface Submodule ... For Use With ...

RS422 A/485 submodule CPU 928B
CPU 948

Circuitry With the above types of communication, the RS422 A/485 submodule can
only be used in full duplex operation implemented by hardware.
The electrical characteristics are governed by EIA Standard RS422 A
(CCITT Recommendation V.11).

Shown in the following figure is the circuitry for the interface (transmit and
receive lines):

Device 1 Device 2

GND GND
T(A) T(A)
T(B) T(B)

R(A) R(A)

R(B) R(B)

Shield Shield

Figure 5-25 RS422 A/485 Submodule: Full Duplex Operation

Apart from the transmit and receive lines, the RS422 A/485 submodule has a
number of control and signaling lines to CCITT Recommendation X.24 and
ISO 8481. In association with the above types of communication, however,
these control and message signals are not required and need therefore not be
wired. The RS422 A/485 is a differential voltage interface and therefore
exhibits higher rejection of interference than a TTY or V.24 interface.
The following applies to the signals to EIA Standard RS422 A (V.11):
Logic 0 (ON) corresponds to: VA > VB
Logic 1 (OFF) corresponds to: VA < VB
In the RS422 A/485 submodule, the interface signals are isolated from the
supply voltage of the PLC.

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Data Transmission A maximum of 19200 bps is permissible for data transmission with the
Rate RS422 A/485 submodule when used in a CPU.

Pin Assignments Shown in the following figure are the pin assignments of the 15-pin
of the RS422 A/485 subminiature D-type connector in the front plate of the RS422 A/485
Submodule submodule:

Pin Des. to Input/ Remarks

CCITT V.24 Output
1 Shield
2 T(A) Output
8
15 3 C(A) Output
4 R(A) Input/Output In full duplex operation, only data
can be received on this two-wire
line.
5 I(A) Input
6 S(A) Input
9
1 7 B(A) Output
8 GND
9 T(B) Output
10 C(B) Output
11 R(B) Input/Output In full duplex operation, only data
can be received on this two-wire
line.
12 I(B) Input
13 S(B) Input
14 B(B) Output
15 X(B) Input

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Jumper Settings When the submodule is delivered, the jumpers are set as shown in the
on the following figure. As a rule, therefore, you can use the RS 422 A/485
RS422 A/485 submodule immediately.
Submodule

Front Connector

19 1
X3
20 2

11 1
X4
12 2

Figure 5-26 RS422-A/485 Submodule: Jumper Settings when Delivered

With the jumpers on the switch row X3 you can remove the preset for
recognizing a break state from the two-wire line R.
When delivered, the two-wire line R is preset with the jumpers 12-14 and 4-6
so that the break state can be recognized. Pin 4 (R(A)) of the front connector
lies above a resistance on +5 V. Pin 11 (R(B)) of the front connector lies
above a resistance on ground.

If you replug the jumpers on 10-12 and 6-8, the two-wire line R is preset as
follows: pin 4 (R(A)) of the front connector lies above a resistance on
ground. Pin 11 (R(B)) of the front connector lies above a resistance on +5 V.
The break state cannot be recognized.

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If you unplug the jumpers 12-14 and 4-6, the two-wire line R is not preset
and the break state cannot be recognized clearly.

With the following jumper setting you can switch over the data direction on
the two-wire line R:

Jumper 16-18: setting for full duplex operation. Data can only be received
on the two-wire line R (default).
Jumper 18-20: setting for half duplex operation. Data can be transmitted or
received on the two-wire line R (special driver required).
With the following jumper setting you can switch the two-wire line B as an
input or an output.

Jumper 17-19: two-wire line B is switched as an output. The line X(B) can
be used as an input. X(A) is connected to ground (default).
Jumper 15-17: two-wire line B is switched as an input. The line X(B) cannot
be used.
With the following jumper setting you can either place the signal /PS3 or the
internal transmitting frequency (TxCint) on the two-wire line B. The
two-wire line B must be switched as an output.

Jumper 2-4: the signal /PS3 can be transmitted via the two-wire line B
(default).
Jumper 4-6: the internal transmitting frequency TxCint can be transmitted
via the two-wire line B.

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With the following jumper setting you can use the frequency transmitted via
the two-wire line S as the receive frequency.

Jumper 7-9 removed: frequency on input S is not used as the receive

frequency (default).
Jumper 7-9 plugged: frequency on input S is used as the receive frequency.
With the following jumper setting you can switch the transmit and receive
frequencies.

Jumpers 8-10, 1-3: the internal transmit frequency (TxCint) is used as the
transmit and receive frequency (default).
Jumpers 10-12, 1-3: the internal transmit frequency (TxCint) is used as the
transmit frequency and the internal receive frequency (RxCint) is used as the
receive frequency.
Jumpers 8-10, 3-5: the frequency transmitted via the two-wire line S is used
as the transmit and receive frequency.
Jumpers 10-12, 3-5: the frequency transmitted via the two-wire line S is
used as the transmit frequency, the internal receive frequency (RxCint) is
used as the receive frequency. With the following jumper setting you can set
the submodule for synchronous transmission with frequency control
according to the DIN draft ISO 8481. The two-wire line B (identifier X to
ISO 8481) must be switched as an output.

Jumpers 1-3, 4-6, 7-9: the internal transmit frequency (TxCint) is used as
the transmit frequency. The internal transmit frequency is simultaneously
transmitted on the two-wire line B.

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Standard Standard cables for connecting the RS422 A/485 submodule in the CPU
Connecting Cables to the partner station are available from Siemens in various lengths, up to
for the 1200 m.
RS422-A/485
The order numbers and lengths can be found in the ordering information.
Submodule

Connecting cable for CPU, CP 524, CP 544

CPU, CP 524, CP 544 CPU, CP 524, CP 544

2 T(A) R(A) 4

9 T(B) R(B) 11
Transmitter Receiver
4 R(A) T(A) 2

11 R(B) T(B) 9
Receiver Transmitter
8 G G 8
GND GND

1 Shield 1
Housing, GND Housing, GND

Figure 5-27 RS422-A/485 Submodule: Connecting Cable for CPU, CP 524, CP 544

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5.11.6 SINEC L1 Submodule

The SINEC L1 submodule is for use with data transmission via the
SINEC L1 bus.

Application The SINEC L1 submodule can be inserted in the following CPU:

Interface Submodule ... For Use With ...

SINEC L1 submodule CPU 928B, from Version 6ES5 928-3UB12
CPU 948

Circuitry The SINEC L1 submodule is equipped with a transmitter and a receiver for
20 mA current loop signals. Shown in the following figure is the circuitry for
the current loop signals:

+ +

Receiver
– –
–
Transmitter
+
– –

Transmitter
+ +
CPU with +
SINEC L1
Receiver
Submodule
Current Direction Arrows
–
Partner

Figure 5-28 SINEC L1 Submodule: Loop Current Direction

Data Transmission Data transmission via the SINEC L1 interface always takes place at
Rate 9600 bps.

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Pin Assignments Shown in the following figure are the pin assignments of the 15-pin
of the SINEC L1 subminiature D-type connector in the front plate of the SINEC L1
Submodules submodule:

Pin Designation Current Remarks

Direction
1 Housing/GND/GNDext
2 – RxD ³
8 3 VPG + 5 V_
15
4 + 24 V from bus
5 24 V ground
6 + TxD ²
7 – TxD ³
8 Housing/GND/GNDext
9 9 + RxD ²
1
10 24 V ground ² Current return
11 20 mA ³ Current source, transmitter
12 24 V ground
13 20 mA ³ Current source, receiver
14 VPG + 5 V_
15 24 V ground
²: from partner to CPU
³: from CPU to partner

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Jumper Settings When the SINEC L1 submodule is delivered, the jumpers are set as shown in
on the SINEC L1 the following figure. As a rule, therefore, you can use the SINEC L1
Submodule submodule immediately.

Front Connector
15-Pin Sub. D-Type

X8

X7

X10

X9

X6
3 2 1
Backplane Connector

Figure 5-29 SINEC L1 Submodule: Jumper Settings when Delivered

BT 777 Bus The connection to the SINEC L1 bus system is provided by the BT 777 bus
Terminal terminal. A detailed description of the bus terminal can be found in the
manual entitled “SINEC L1 Bus System,” 6ES5 998-7LA11).
The order number can be found in the ordering information.

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Connecting Cable If the CPU communicates as master in a point-to-point link with a slave, a
for Point-to-Point connecting cable can be used instead of the bus terminal.
Communication
Shown in the following figure is connecting cable for point-to-point
communication from the SINEC L1 submodule in the CPU to a partner.

Connecting cable: CPU - partner (point-to-point communication)

CPU 928B e.g. CPU 928B, 941...945

CPU 102, 103, AG 90U/95U

9 + RxD – TxD 7

Receiver Transmitter
2 – RxD + TxD 6

15 M + 20 mA 11
+ 24V
+ 24V 11 + 20 mA M 15

6 + TxD – RxD 2
Transmitter Receiver
7 – TxD + RxD 9
1 Shield 1
Housing, GND Housing, GND

Figure 5-30 SINEC L1 Submodule: Connecting Cable for Point-to-Point Communication via the SINEC L1
Submodule

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5.11.7 Technical Specifications of the Interface Submodules

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

Degree of protection IP 00
Ambient temperature
in operation 0 to +55 °C
for transporation and storage – 40 to +70 °C
Relative humidity 95% max. at 25 °C, no condensation
Supply voltage 5V $ 5%
24V + 25%/– 17%
Transmission rate
PG submodule 9 600 bps fixed
V.24 submodule 19 200 bps max.
TTY submodule 9600 bps max.
RS422-A/485 submodule 19 200 bps max.
(when submodule is used in a CPU)
SINEC L1 submodule 9600 bps fixed
Front connector, female
PG, RS422 A/485, SINEC L1 15-pin Cannon
submodule
V.24, TTY submodule 25-pin Cannon
Transmission cable Shielded four-wire line (five-wire line for
RS422 A) with braided shield and metal
housing on connector, grounding required at
both ends.
Line length
PG submodule 1000 m max.
V.24 submodule 16 m max.
TTY submodule 1000 m max.
RS422 A/485 submodule 1200 m max.
SINEC L1 submodule 1000 m max.
Current consumption at 5 V/24 V 5V 24 V
PG submodule 40 mA max. 380 mA
V.24 submodule 0.2 A max. –
TTY submodule 0.1 A max. 60 mA
RS422 A/485 submodule 0.5 A max. –
SINEC L1 submodule 170 mA max. 100 mA
Design
Dimensions (WxHxD) 16.3 mm x 60 mm x 102.7 mm
Weight
per interface submodule Approx. 0.1 kg

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Multiprocessor Operation/Coordinators 6
This chapter explains how to install multiprocessor operation in the
S5-135U/155U programmable controller and start operations.
You will require the 923A or 923C coordinator module. The technical
functions of these modules are described.

Chapter Section Description Page

Overview 6.1 Introduction 6-2
6.2 Starting the Multiprocessor Operation 6-3
6.3 Coordinator Modes 6-13
6.4 923A Coordinator Module 6-15
6.5 923C Coordinator Module 6-18
6.6 Technical Specifications of the Coordinators 6-28

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Multiprocessor Operation/Coordinators

6.1 Introduction

The S5-135U/155U is a member of the SIMATIC S5 family of programmable

(logic) controllers. The PLC can be used both in single and in multiprocessor
operation with up to four CPUs.

Slots Occupied You can arbitrarily combine the CPUs in the central controller at the CPU
slots.

CPU Slot Requirement

CPU 948/CPU 928B/CPU 928 2 slots
CPU 922 1 slot

In multiprocessor operation, each CPU processes its individual user program

independently of the other CPUs.
The common S5 bus serves for data interchange with I/O modules, CPs, IPs
and other CPUs. In multiprocessor operation, access of the CPUs to the S5
bus is controlled by a coordinator. The functioning of this module is
described in Sections 6.5 and 6.6.
For an explanation of data interchange between CPUs in multiprocessor
operation and the arrangement of your STEP 5 program, please consult the
Programming Guide for your CPU.

Coordinator A coordinator is required in multiprocessor operation. The following are

available for the S5-135U/155U PLC:
923A coordinator (COR A)

and
923C coordinator (COR C).
The coordinator allocates to the CPUs the time divisions in which they can
access the S5 bus (bus enable time), and contains the global memory for data
interchange between the CPUs via communication flags. Additionally, the
COR C contains another memory with four pages for the “multiprocessor
communication” function as well as a serial PG interface with PG
multiplexer function (PG MUX).

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6.2 Starting the Multiprocessor Operation

This section guides you through the installation and startup of multiprocessor
operation; the following is assumed:
You are familiar with the use and programming of individual modules in
single-processor operation. If this is not the case, please consult the
relevant chapters in this manual and in the appropriate Programming
Guides.

Note
As soon as a coordinator is inserted in the S5-135U/155U central controller,
all CPUs are automatically in multiprocessor operation irrespective of the
number of inserted CPUs. Even if the coordinator is only operated with one
CPU, the conditions for multiprocessor operation apply to this CPU (DB 1
required, DX 0 possibly required, etc.).

Procedure, You can use up to four CPUs in the S5-135U/155U programmable controller.
Overview The permissible slots are indicated in Chapter 4.
Startup can be subdivided into the following steps:

Step Action
1 Set the number of CPUs (inserted from the left) on the
coordinator.
2 If you use communication flags on CPs: Mask out the
communication flag areas on the coordinator.
3 Insert the CPUs and the coordinator in the slots provided in the
central controller. The CC must be disconnected from system
voltage.
4 Switch on the system voltage and Power switch on the power
supply unit.
5 Execute an OVERALL RESET on all CPUs.
6 Load your STEP 5 user programs in all CPUs (including DB 1,
additionally DX 0 for the CPU 948).
7 Execute a RESET on all CPUs.
8 Set the mode switch of the coordinator from the STOP to RUN or
TEST setting.

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Setting the Shown in Figures 6-1 and 6-2 are the locations of jumpers and switches on
Jumpers the modules, at which the settings required for startup must be made.

Note
The settings of jumpers which are not described in the following text must
not be changed.

16 9
EP 2

1 8

16 9
X1
EP 7

1 8
J2

J1
16 9
Mode Switch
(RUN,STOP,TEST) EP 43

1 8
16 9
EP 45

1 8

X2
EP 63 EP 62
16 9 16 9

1 8 1 8

Figure 6-1 Location of Jumpers on the 923A Coordinator (when Delivered)

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8 1
S1 EP 60
(JR)
S2
9 16
S3 8 1
on off
EP 61 X1
(JX)
9 16

Mode Switch
(RUN,STOP,TEST) X6

X5
off on X4
8 1

EP 64
(JU)
9 16

8 1

EP 62
(JY) X2
9 16

off on 8 1
EP 63
(JZ)
9 16
Front View
S1, S2, S3

Figure 6-2 Location of Jumper Sockets and Switches on the 923A Coordinator and Front View of Switches S1 to
S3 (when Delivered)

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The individual actions are explained in more detail in the following.

Step 1 Setting the number of occupied CPU slots on the coordinator:

923A Coordinator
Number of CPUs used Jumper(s) at EP 62
2 7 - 10; 8 - 9 1)

3 7 -10
4 8-9
923C Coordinator
Coded by inserting only one DIL switch S1.4, S1.5 or S1.6 in the front
plate recess: (see Figure 6-2)
DIL S. on off Effect
S1.1 x –
S1.2 x –
S1.3 x Enable test mode
S1.4 x No. of occupied CPU slots = 2 1)
S1.5 x No. of occupied CPU slots = 3
S1.6 x No. of occupied CPU slots = 4
1) Setting when delivered

Step 2 Setting the communication flag areas:

IF ... THEN ...

you use you must mask out these areas (blocks) on the
communication flag coordinator without fail, to avoid duplicated
areas on CPs (please addressing of the communication memory.
consult the relevant
The 256 communication flag bytes can be masked
manuals),
out in groups of 32. You do this by removing
jumpers at coding socket EP 7 on Coordinator A
(see Figure 6-1 for location) or EP 60 on
Coordinator C (see Figure 6-2).

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16 9 8 1

1 8 9 16
EP 7 EP 60

When the unit is delivered, all communication flag areas are activated
(see above):
On Coordinator A by jumpers at EP 7
On Coordinator C by jumpers at EP 60

Jumper Comm. Flag Byte Address

8-9 0 to 31 F200H to F21FH
7 - 10 32 to 63 F220H to F23FH
6 - 11 64 to 95 F240H to F25FH
5 - 12 96 to 127 F260H to F27FH
4 - 13 128 to 159 F280H to F29FH
3 - 14 160 to 191 F2A0H to F2BFH
2 - 15 192 to 223 F2C0H to F2DFH
1 - 16 224 to 255 F2E0H to F2FFH
Jumper inserted: area activated (coordinator
acknowledges in this area)
Jumper not inserted: area masked out (coordinator
does not acknowledge in this area)

Examples You wish to mask out the four communication flag areas with the highest
addresses on COR A:

16 9

EP7

1 8

Address F200H to F27FH

Activated (Jumper Inserted)

Address F280H to F2FFH

Masked Out (Jumper Open)

Figure 6-3 Example of Addressing the Communication Memory on COR A

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You wish to mask out the four communication flag areas with the highest
addresses on COR C:

Address F200H to F27FH

Activated (Jumper Inserted)

Address F280H to F2FFH

Masked Out (Jumper Open)

8 1

EP 60

9 16

Figure 6-4 Example of Addressing the Communication Memory on COR C

Step 3 Inserting CPUs and coordinator in the central controller:

Precondition: The central controller is not yet switched off.

Substep Action Reaction

3a Insert the CPUs and coordinator

none
in the relevant slots.
3b Insert all EPROM or RAM sub-
modules in the CPUs according
to the configuration. The
none
EPROM submodules must have
been previously programmed
with a PG.
3c Set all mode switches on the
CPUs and on the coordinator to none
STOP.

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Step 4
Action Reaction
Switch the supply voltage on. 1. The red STOP LEDs flash
rapidly on all CPUs to indicate:
Overall reset requested.
2. If the test mode is not set at the
coordinator (see Section 6.3)
and the mode switch is not at
the TEST setting:
The red BASP (output inhibit)
LED is permanently lit to
indicate: Digital outputs are
inhibited.

Possible Faults Symptom:

On some CPUs the STOP LED is not lit; the other CPUs are requesting
OVERALL RESET. All CPUs are emitting the BASP (output inhibit) signal.
Remedy:
Check the setting for the number of occupied CPU slots on the coordinator.
Are the CPUs inserted at suitable slots?

Step 5 Executing an OVERALL RESET on all CPUs:

Ensure that the mode switch on the coordinator is set to STOP. (Precondition:
Steps 3 and 4 have been fully executed.

Action Reaction
Execute the OVERALL RESET for The red STOP LEDs on the CPUs at
each individual CPU: which the OVERALL RESET was
executed, light up continuously.
Hold the MC 1) mode switch in the Each CPU additionally emits the
OVERALL RESET setting; simulta- output inhibit signal (BASP LED
neously set the mode switch from continuously lit).
STOP to RUN and back to STOP.

1) MC: Momentary-contact

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Step 6 Loading STEP 5 user programs in all CPUs:

Recommended precondition: The programs of the individual CPUs have
already been tested in single-processor operation.
For details of loading STEP 5 blocks and using the different types of
memory, please consult the relevant Programming Guides of the CPUs and
your PG Manual.

Prerequisites
What? Where?
Data block DB 1 must be present for I/O allocation. in all
CPUs 1)
Data block DX 0 must additionally be present at only in
CPU 948. CPU 948
The mode for “Process interrupts via IB 0 = off” must
be set in DX 0.
To start multiprocessor operation immediately with all into the
CPU programs, you must now load your programs into desired
the individual CPUs. CPU 1)
After completing these steps, however, you can load
individual programs into certain CPUs.

1. You must only load the blocks for CPUs with RAM operations; for EPROM operation, the
inserted EPROMs must contain your user program with DB 1 (DX 0).
Data blocks which you have provided for dynamic data storage must be copied after a
RESET by program into the RAM.

Reaction
There is no change in the reactions of Step 4 (each CPU still emits the
output inhibit signal: the BASP LED is continuously lit).

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Step 7 Executing a RESET at all CPUs:

Action Reaction
Execute a RESET at each individual The red STOP LED on each CPU
CPU: is continuously lit; each CPU
Hold the MC 1) mode switch at the emits the output inhibit signal.
RESET setting; simultaneously set the The CPUs are in the wait state.
mode switch from STOP to RUN.
1) MC: Momentary-contact

Possible Faults Symptom 1:

The STOP LED of one CPU flashes slowly. When the control bits of this
CPU are read out with the programmer, “DB 1 error” is marked in addition to
the usual information. There is no output of an ISTACK.

Remedy:
Check whether data block DB1 in the CPU was correctly loaded and
programmed.

Symptom 2:
After execution of a RESET:
Undefined states or faults occur at the CPUs (e.g. after a RESTART at
CPU 922, it goes to the RUN state although the other CPUs are still at
STOP).

Remedy:
Verify the following points:
Is the coordinator inserted?
Are all modules correctly inserted (engaged)?
Are all modules at the correct slots?

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Step 8 Setting the coordinator mode switch to RUN or TEST:

IF ... THEN ... Reaction

You do not wish to Set the coordinator The green RUN LEDs
work in the test mode 1) mode switch from of all CPUs are
STOP to RUN. continuously lit. All
CPUs simultaneously
go into the cycle. The
output inhibit signal is
not emitted (BASP
LED = off).
You wish to work in the Set the coordinator Set the coordinator
test mode (it must be mode switch from mode switch from
enabled on the STOP to TEST. STOP to TEST.
coordinator) 1)
1) Test mode and setting: see Section 6.3

Possible Faults Symptom:

All CPUs remain in the Stop state.
Remedy:
Check whether the mode switches of all CPUs are set to RUN.

A subsequent start of individual CPUs is not possible. Switch the coordinator

back to STOP. Execute a RESET at all CPUs and then switch the coordinator
to RUN again.

Note
During the starting phase (processing of the start OBs) the STOP and RUN
LEDs remain off at all CPUs. The RUN LED only lights up continuously
when the CPUs go over to cyclic program processing.

Notes Relating to
Multiprocessor When the coordinator is switched from STOP to TEST, only the CPUs
Start whose switches are at the RUN setting will operate in the test mode.
If the 923C coordinator is used and the PG interface on the front plate is
not connected to the PG and switched online, the IF FAULT LED lights
up on the 923C coordinator. The indicator can be ignored in this case.

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6.3 Coordinator Modes

The Stop State If, when the supply voltage is switched on, the coordinator mode switch is at
STOP or another stop request is pending, the CPUs remain in the Stop state.

Startup AUTOMATIC RESET or

AUTOMATIC RESTART
If, when the supply voltage is switched on, the coordinator mode switch is at
RUN, an AUTOMATIC RESET or AUTOMATIC RESTART (depending on
DX 0 setting) will take place as long as the mode switches of the CPUs are
also at RUN and the PLC was previously in cyclic operation.

MANUAL START
When you set the coordinator mode switch from STOP to RUN, the CPUs
will execute a start if this was already prepared at all CPUs by appropriate
switch actuation, i.e. the CPUs are in the wait state. As required by the user,
the type of start can be the same for all CPUs or arbitrarily different.
After the start synchronization by the system programs, the CPUs
simultaneously go to RUN (cyclic operation).

Normal Operation The transition of individual CPUs is synchronized - as long as the preset
and Stop in the “start synchronization” in the relevant CPUs has not been changed by DX 0
Event of Faults programming - i.e. only when each CPU has ended its start do all CPUs
jointly go to cyclic program processing.
If the coordinator mode switch is at the RUN setting and one CPU goes to
the Stop state, all the other CPUs also go to the Stop state. The red STOP
LED(s) on the CPU(s) causing the Stop state flash slowly; the STOP LEDs of
the other CPUs are continuously lit.
Apart from any indication with fault LEDs on the CPU which is the cause, all
CPUs emit the BASP (output inhibit) signal.

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Test Mode

Warning
! Since, in the test mode, no CPU can emit a BASP (output inhibit) in the
event of a fault, the test mode must be switched to the inactive state
without fail after completion of startup to avoid a critical or even
hazardous system state.

Before you can go into the test mode with the TEST switch, you have to
enable it on the module. This is achieved differently with the 923A and 923C
coordinators.

Enabling the Test Insert jumper 3 - 14 on coding socket EP 45 as shown in the following
Mode with the sketch.
923A
16 14 9

EP 45
923A Coordinator

1 3 8

Enabling the Test Set DIL switch S1.3 from Off to On (the following table shows the DIL
Mode with the switches as delivered; see also Figure 6-2).
923C

Reaction of the
CPUs DIL S. on off Effect
S1.1 x –
S1.2 x –
S1.3 x Test mode
S1.4 x No. of occupied CPU slots = 2
S1.5 x No. of occupied CPU slots = 3
S1.6 x No. of occupied CPU slots = 4

When the coordinator mode switch is set from STOP to TEST, the CPUs can
be started individually. There is therefore no synchronized transition to
cyclic program processing. The output of signal BASP is suppressed on all
CPUs, even if there is an error.
f an error occurs with a CPU switched to RUN, only this one goes to the Stop
state in the test mode. The error is indicated by slow flashing of the CPU’s
STOP LED. The error at this CPU does not affect other CPUs.
If the test mode is not activated, a changeover from STOP to TEST does not
result in any reaction of the CPUs.

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6.4 923A Coordinator Module

6.4.1 Technical Description

This section contains information on the application, design and principle of

operation of the 923A coordinator.

Application The 923A coordinator module is intended for operation in the S5-135U/155U
PLC. It is required in multiprocessor operation and has the following
functions:
Bus arbitration
To coordinate multiprocessor operation, i.e. the simultaneous use of two
to four CPUs (CPU 928B, CPU 928 or CPU 922).

Communication memory
for the interchange of data between CPUs via communication flags.

Note
The 923A coordinator module cannot be used in multiprocessor operation if
a CPU 948 is fitted in the 135U/155U PLC. If you execute global memory
access in multiprocessor operation (I/O area with addresses 0000H-EFFFH)
with the CPU 928B and/or the CPU 928, you must use the COR 923C as the
coordinator.

Design The COR 923A is designed as a plug-in PCB of double Eurocard format.
Two 48-way Series 2 blade connectors serve to connect the PCB to the S5
bus in the subrack.
The front plate width is 1 1/3 standard plug-in stations.
A three-position mode switch is fitted in the front plate for operator
functions.

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Principle of Bus arbitration

Operation
The COR 923A cyclically allocates a bus enable signal to each of the two to
four CPUs in the S5-135U/155U PLC. Only during this time can the relevant
CPU utilize the common S5 bus.
The assignment of bus enable signals takes place in time-division multiplex
operation. On the COR 923A, you set the number of CPUs with jumpers. The
enable time for access to the S5 bus is preset at 2 ms for all CPUs. If the bus
enable signal has been emitted by the coordinator for a CPU, this CPU can
extend the enable time with the bus lock signal. However, the user has no
influence on this.
The bus enable assignment sequence begins with CPU 1 after the
Reset signal is removed by the power supply, and enables the CPUs
in the following order according to the preset number of CPUs:
CPU 1, CPU 2, CPU 3, CPU 4, CPU 1, CPU 2 etc. (see Figure 6-5)

Bus Enable for:

CPU1
2 µs

CPU2

CPU3
2µ s +
Bus Lock

CPU4

Bus Lock

Reset

CPUs in Operation

Time

Figure 6-5 Timing Sequences of the Bus Signals

Communication memory
The communication memory comprises a central battery-backed RAM in the
PLC. It has two areas: the communication flags and the semaphores.
The communication flags on the COR 923A allow the cyclic interchange of
data between the CPUs. The semaphores are mainly used to coordinate the
exchange of data in the I/O area.

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Please consult the Programming Guides of the CPUs to program these

functions.

6.4.2 Settings on the Coordinator

User Control A three-stage mode switch on the front plate serves for user control; it has the
settings RUN, STOP and TEST.
The functions of the mode switch and its use are explained in Sections 6.2
and 6.3.

Mode switch for

RUN, STOP and TEST

Figure 6-6 Front Plate of the COR 923 A

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6.5 923C Coordinator Module

6.5.1 Technical Description

This section contains information on the application, design and principle of

operation of the 923C coordinator.

Application The 923C coordinator module can be used in the S5-135U/155U

programmable controller and in the EU S5-185U expansion unit. There are
three main task areas which are, to some extent, independent:
Bus arbitration (only in the central controller)

To coordinate multiprocessor operation, i.e. the simultaneous use of two

to four CPUs (CPU 948, CPU 928B, CPU 928, CPU 922).

Communication memory (only in the central controller)

For the interchange of data between CPUs via communication flags and
data blocks.

Central programmer connection (PG MUX)

For the programming and startup of up to 8 modules via one PG

connection.
To program a programmable controller via the SINEC H1 or SINEC
L1/L2 bus, connect the SINEC CP to the PG connection of the COR C
using the 725 cable (“swing” cable).

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Design The COR 923C is designed as a plug-in PCB in double Eurocard format.
Two 48-way Series 2 blade connectors serve to connect the module to the S5
bus in the subrack.
The front plate width is 1 1/3 standard plug-in stations.
A mode switch with three settings is fitted in the front plate for other
operator functions.
Faults are indicated by five small red LEDs.
There is a recess with cover in the upper third of the front plate. By removing
the cover, you can operate the DIL switches to set parameters for the module.
You can connect the COR 923C via a 15-pin front connector to a
programmer, OP, operator control panel or the CP 530 and CP 143.

Principle of The COR 923C cyclically allocates a bus enable signal to each of the two to
Operation four CPUs in the S5-135U/155U PLC. Only during this time can the relevant
CPU utilize the common S5 bus.
The assignment of bus enable signals takes place in time-division multiplex
operation. On the COR 923C, you set the number of CPUs with DIL
switches. The enable time for access to the S5 bus is preset at 2 ms for all
CPUs. If the bus enable signal has been emitted by the coordinator for a
CPU, this CPU can extend the enable time with the bus lock signal. However,
the user has no influence on this.
The bus enable assignment sequence begins with CPU 1 after the Reset
signal is removed by the power supply, and enables the CPUs in the
following order according to the preset number of CPUs:
CPU 1, CPU 2, CPU 3, CPU 4, CPU 1, CPU 2 etc. (see Figure 6-7)

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Bus Enable for:

CPU1
2µs

CPU2

CPU3
2µs +
Bus Lock

CPU4

Bus Lock

Reset

CPUs in Operation

Time

Figure 6-7 Timing Sequences of the Bus Control Signals

Monitoring for continuous bus assignment

The bus lock signal can only be emitted by the CPU which has already
received a bus enable signal from the COR 923C. The bus enable time is
extended by the duration of the bus lock signal for the CPU (see Figure 6-7).
The factory setting for monitoring of the bus lock signal is 2 ms. If the signal
remains active for a longer duration, the COR 923C emits a signal which
results in a Stop of all CPUs.
The CPU which emitted the bus lock signal for too long a duration, is marked
by the CPU in a readable register under address FEFFH (fault register, see
Figure 6-8). The assigned BUS FAULT LED in the front plate of the COR
923C lights up. The register is cleared and the LED goes off again when the
signal which led to the Stop state becomes inactive.

Communication memory
The communication memory comprises a central battery-backed RAM in the
PLC. It has three areas: 1) the communication flags (256 bytes), 2) the
semaphores (32), and 3) four memory pages.
The communication flags are located in memory area F200H to F2FFH. The
communication flags enable the cyclic interchange of small volumes of data
between the CPUs in the S5-135U/155U PLC. The four memory pages serve
for the exchange of data blocks between CPUs.
Please consult the Programming Guides of the CPUs to program these two
functions.

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The semaphores are used to coordinate the CPUs for access to the same I/O
address (see Programming Guides, operations SES and SEF).

F200H
Communication Flags

F300H
Synchronization Area
for Operating Systems
F400H

Page Memory for

Data Blocks Page Page Page Page
No. 252 No. 253 No. 254 No. 255

F7FFH

Vector Register for

Page Selection,
Fault Register FEFFH

Figure 6-8 Areas of the Communication Memory on the S5 Bus

Addressing method for the page memory (vector register)

The vector register serves to form subaddresses of several memories in a
common address area. The register is an 8-bit register which is written to
under address FEFFH. It cannot be read out.
The page memory contains four pages of 1 Kbyte. An identification number
is assigned to each page. These are the numbers 252, 253, 254 and 255.
These numbers are permanently set on the COR 923C and cannot be
changed. You must not use these numbers on other modules (CP, IP) in the
same PLC otherwise double addressing will occur.
When the supply voltage is switched on, the vector register is cleared. The
vector register then has the number 0H.
The transfer of data to and from this memory is implemented with special
functions of the CPU. You can find these functions in the appropriate
Programming Guides.

PG Multiplexer The PG interface of the COR 923C can be switched over to eight different
serial interfaces via the path selection of the PG software.
The multiplex interfaces have TTL level and are wired to the other modules
via the backplane connector and backplane.

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Selection Method Station numbers are assigned to all the modules to be served by the
for the Serial multiplexer in the unit. These numbers must be within the range 1 to 31
Interfaces (decimal). You set the lowest of these numbers, the base address, with DIL
switch S2 in binary code. The maximum of eight numbers are allocated to
the slots of the PLC (see following table).
All eight numbers or slots are assigned to switch S3: the lowest number to
switch S3.1, and the highest number to switch S3.8. The setting of station
numbers and the base address are described in more detail in Section 6.5.2.

Switch Slot Station No.

S3.1 11 Base address
S3.2 27 Base address + 1
S3.3 43 Base address + 2
S3.4 59 Base address + 3
S3.5 75 Base address + 4
S3.6 83 Base address + 5
S3.7 91 Base address + 6
S3.8 99 Base address + 7

If slots are not occupied or if you wish to operate modules via their own front
connectors, you must delete the numbers assigned to the corresponding slots
with switch S3.

Note
For a module operated via the multiplexer, the front connector of the PG
interface of the CPU must not be plugged in. With CPUs 948 and 928B,
this only applies to the integrated PG interface SI 1.

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6.5.2 Settings on the Coordinator

Indicators and Shown in Figure 6-9 are all the indicators and controls on the front plate of
Controls the COR 923C.

Setting the Coordination Section:

S1.3 to enable/lock out the “Test” mode
S1.4 to S1.6 to set the number of CPUs

Setting the PG Multiplexer:

S2.2 to S2.6: Base address
S3.1 to S3.8: Activating the slots to be served by the COR923C

Mode switch for RUN, STOP and TEST

“BUS FAULT” LEDs

These are allocated to the relevant CPUs and light up when the max. value of
monitored bus access time is exceeded.

“IF FAULT” LED

indicates fault at the serial interface.
If the interface is not in use, the LED is permanently lit.

PG interface, 15-pin

Figure 6-9 Front plate of the COR 923C

Mode Switch The mode switch on the front plate can be set to RUN, STOP and TEST.
Please refer to Sections 6.2 and 6.3 for its functions and use.

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Setting the DIL

Switches

Note
On switch S1, the On position is on the left; on switches S2 and S3, however,
it is on the right (see Figure 6-10).

on off

off on

off on

Figure 6-10 DIL Switches on the COR 923C (Settings when Delivered)

Coordination You set the number of CPUs present in the PLC with the 3 DIL switches S1.4
Section (Number to S1.6. You may only set one switch.
of CPUs)
The factory setting is “Number of CPUs = 2” (see below).
Factory setting:

Switch Setting Meaning

on off
S1.1 x –
S1.2 x –
S1.3 x Test mode (see also Sec. 6.3)
S1.4 x Number of CPUs = 2
S1.5 x Number of CPUs = 3
S1.6 x Number of CPUs = 4

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PG Multiplexer: You set a base address from 1 to 31 with DIL switch S2. You can reference
Base Address the modules selected by the multiplexer under this address and the following
seven addresses. The base address results from the sum of binary
significances activated by the On setting of the switch.
Factory setting:

Switch Setting Meaning

off on
’0’ ’1’

S2.1 x –
S2.2 x Significance 16
S2.3 x Significance 8
S2.4 x Significance 4
S2.5 x Significance 2
S2.6 x Significance 1 (base address = 1)

PG Multiplexer: You use switch S3 to activate the numbers and slots to be reached via the
Activating COR 923C.
Addesses
Factory setting:

Switch Setting Meaning Slot No. in the

S5 135U/155U
S5-135U/155U
off on
S3.1 x Base address + 0 11
S3.2 x Base address + 1 27
S3.3 x Base address + 2 43
S3.4 x Base address + 3 59
S3.5 x Base address + 4 75
S3.6 x Base address + 5 83
S3.7 x Base address + 6 91
S3.8 x Base address + 7 99

An example for setting the PG multiplexer is given on the following page.

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Example of You wish to reference modules at Slots 11, 59, 75 and 99 in the
Address Activation S5-135U/155U PLC via the COR 923C, from base address 10.
Setting the base address:

Switch Setting Meaning

off on
Base address:
S2.1 x –
S2.2 x Significance 16
S2.3 x Significance 8 8
S2.4 x Significance 4
S2.5 x Significance 2 + 2
S2.6 x Significance 1
= 10

Activating the required slots for the S5-135U/155U PLC:

Switch Setting Meaning Slot No. in the Operable Slots End

S5-135U/155U Address
off on
S3.1 x Base address + 0 11 11 10
S3.2 x Base address + 1 27
S3.3 x Base address + 2 43
S3.4 x Base address + 3 59 59 13
S3.5 x Base address + 4 75 75 14
S3.6 x Base address + 5 83
S3.7 x Base address + 6 91
S3.8 x Base address + 7 99 99 17

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Jumpers to All the output signals required for coordination (arbitration) can be
Switch off the interrupted by removing a jumper plug. This is necessary to operate the COR
Coordination 923C as a PG multiplexer in the EU S5-185U.
Signals

Coordination Section

in operation out of operation

All jumpers of EP 61 closed All jumpers of EP 61 open

8 1

EP 61

9 16

When the unit is delivered, all jumpers are closed.

Fault Register The fault register is an 8-bit register and is readable by the CPU under
address FEFFH. The register is written to by the bus monitor in the event of a
bus error. Each CPU is assigned one bit of the fault register which is set to 1
in the event of an error. The register is cleared each time the Stop signal
becomes inactive.

7 4 3 2 1 0
Not assigned Fault register FEFFH

Bit = 1: Bus error from CPU 1

Bit = 2: Bus error from CPU 2
Bit = 3: Bus error from CPU 3
Bit = 4: Bus error from CPU 4

The fault register can be read by all CPUs, allowing central functions to be
initiated.

Note
The fault register and the page register are at address FEFFH (FFEFFH with
the CPU 948). The page register is addressed by writing to FEFFH, and the
fault register is addressed by reading out FEFFH.

System Manual
C79000-G8576-C199-06 6-27
Multiprocessor Operation/Coordinators

6.6 Technical Specifications of the Coordinators

Important for the USA and Canada

The following approvals have been obtained:
S UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
S CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533

923A Coordinator 923C Coordinator

Degree of protection IP 00
Operating temperature 0 to +55 _C
Transportation and storage 40 to +70 _C
temperature
Relative humidity 95% max. at +25 _C, no condensation
Operating altitude 3500 m max. above sea level
Supply voltage 5 V $ 5% 5 V $ 5%
24 V +25%/ –15%
Current consumption at 5 V 0.5 A typical 1.1 A typical
Current consumption at 24 V – 60 mA
Minimum backup voltage 2.7 V
Backup current 100 nA typical 2 mA typical
Acknowledgement time for 320 ns typical
access to communication
memory via S5 Bus
Transmission rate of the serial – 9600 bps
interface
Transmission cable – Shielded 4-wire line, PG
connecting cable
Transmission range – 1 km max. at 9600 bps
Weight Approx. 0.3 kg
Dimensions (W x H x D) 20.32 x 233.4 x 160 mm

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Interface Modules 7
Various interface modules (IMs) are available for communication between a
central controller and expansion units, and between expansion units.
Interface modules in the central controller are known as EU interface
modules; those inserted in an EU are known as CC interface modules.
This chapter describes the EU interface modules:
IM 300-3, IM 300-5, IM 301-3, IM 301-5 and IM 304
as well as the CC interface modules:
IM 312-3, IM 312-5, IM 310 and IM 314
Other IMs such as the IM 307-IM 317 and the IM 308-IM 318 are described
in separate manuals (see Catalog ST 54.1). The IM 306 CC interface module
is described in the S5-115U PLC manual.
A general overview of the applications of individual IMs can be found in
Chapter 2: “Centralized and Distributed Configuration of a Programmable
Controller.”

Chapter Section Description Page

Overview 7.1 The 300 and 312 Interface Modules 7-2
7.2 The 301 and 310 Interface Modules 7-9
7.3 The 304 and 314 Interface Modules 7-13
7.4 Technical Specifications 7-20

System Manual
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Interface Modules

7.1 The 300 and 312 Interface Modules

The 300 and 312 interface modules are used for centralized connection of
I/O modules and signal preprocessing modules (IPs) to a CC via the
following expansion units (allowing for possible configurations):
EU 183U
EU 184U
EU 185U (only input/output modules)
EU 187U
ER 701-1
Additionally, you can utilize these IMs for secondary communication, i.e.
additional EUs can be connected in a centralized arrangement to an EU 183U
or EU 185U in distributed configuration. Up to four IM 300s can be used in
one CC, up to two of which may be IM 300-5s. You can use one IM 300 in
an EU 183U or EU 185U.

Application of the An IM 300 EU interface module is complemented by an IM 312 or

IM 300 and IM 312 IM 306 CC interface module. Use the following IMs, depending on the
connected EU:

EU Interface Module EU Type CC Interface Module

IM 300-5 C EU 184U, EU 187U IM 312-5
(6ES5 300-5CA11)
IM 300-3 EU 183U IM 312-3
(6ES5 300-3AB11) EU 185U (only I/O
modules)
IM 300-5 L ER 701-1 IM 306
(6ES5 300-5LB11)

There are two versions of IM 312-3 and IM 312-5. They differ in the length
of permanently connected cable:

Order No. Cable Length

6ES5 312-5CA1X 0.5 m

6ES5 312-5CA2X 1.5 m
6ES5 312-3AB1X 0.5 m
6ES5 312-3AB3X 0.95 m

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7-2 C79000-G8576-C199-06
 Interface Modules

Connecting the For one IM 300-5, you can connect up to three EUs to a CC or EU in
EU 184U and distributed arrangement (see Figures 7-5 and 7-6). The EUs are supplied with
EU 187U operating voltage via the IMs. Any free connections on the IM 300-5 and the
last IM 312-5 require no terminator.

Note
The maximum permissible current over each connection of the
IM 300-5CA11 is 5 A.

Connecting the You can connect up to four EUs to each IM 300-3. The last IM 312-3
EU 183U, EU 185U requires a terminator.

Connecting the You can connect up to three ERs to each IM 300-5L (-5LB11). The ERs are
ER 701-1 supplied with operating voltage via the IMs.

Note
The maximum permissible current over each connection of the
IM 300-5LB11 is 2 A.

The connection of central controller and expansion unit to the IM 300-5LB11

is provided exclusively by the 705-0 connecting cable. It is available in two
lengths: 0.5 m and 1.5 m (refer to the ordering information for order
numbers).

Addressing When the IM 300s are used in the S5-135U/155U PLC, the input/output
modules can be addressed in the normal (P) and extended (O) areas.
You may only set module addresses in the EU which are not used in the CC.
This applies to both areas.

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C79000-G8576-C199-06 7-3
Interface Modules

7.1.1 Indicators and Controls

IM 300-3:
I/O Module Failure LED
This LED lights up if the supply of power to the connected EUs has failed
and/or the connecting cable is open-circuit.
IM 300-5 (-5CA11):
I/O Module Failure LEDs
LEDs LD1 and/or LD2 light up if a module inserted in the EU no longer
responds to an access by the CPU.
The IM 312 has no indicators or controls.

34 1 34 1 34 1
18 18 18

50 33 17 50 33 17 50 33 17

I/O Module I/O Module

Failure Failure
Fault Fault

Fault

34 1
18

33
50 17

IM300-3 IM300-5 IM312

Figure 7-1 Front Plates of the IM 300 and IM 312

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7-4 C79000-G8576-C199-06
 Interface Modules

7.1.2 Modes/Jumper Assignments of the IM 300

Jumper IM 300-3
Assignments

16 9

12

1 8

X3 X1

LED 1

X2

J1

Figure 7-2 Location of Jumpers on the IM 300-3 (when Delivered)

Purpose of the You must insert an additional jumper 4-13 at location 12 for address setting
Jumpers in the extended I/O area (O area).
Jumper 1 is open and has no function for operation in the S5-135U/155U
PLC.

System Manual
C79000-G8576-C199-06 7-5
Interface Modules

Jumper IM 300-5 (-5CA11)

Assignments

16 9
4

1 8

X3 J1
X1
J2

J3
LED1
LED2

X2
X4

J8

Figure 7-3 Location of Jumpers on the IM 300-5 (-5LB11) (when Delivered)

You must insert jumper 8-9 at location 4 for address setting in the extended
I/O area (O area). All other jumpers must remain in their factory settings.

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7-6 C79000-G8576-C199-06
 Interface Modules

Jumper IM 300-5 (-LB11)

Assignments

M1

P1
X3 X1

X2
X4
Q1 Q2 Q3 Q4 Q5

Figure 7-4 Location of Jumpers on the IM 300-5 (-5LB11) (when Delivered)

You must insert jumpers Q1 to Q4 for addressing in the normal (P) area.
If you insert jumper Q5, the “I/Os not ready” message will be relayed to the
CPU.
All other jumpers must remain in their factory settings.
Shown in the following figures is the centralized communication between
central controller and expansion units, with and without supply of power via
the IM 300 and IM 312.

System Manual
C79000-G8576-C199-06 7-7
Interface Modules

Terminator

EU183U IM 312-3

IM 312-3

Total Length of Lines 2 m max.

EU183U

EU183U IM 312-3

EU183U IM 312-3

IM 300-3
S5-135U/155U
CC

Figure 7-5 Centralized Communication Between Central Controller and Expansion Units with a Power Supply
Unit

With this arrangement, the two

EU 184U IM312-5 cabinets must be electrically
EU 187U interconnected.
Total Length of Lines 2 m max.

EU 184U IM312-5
EU 187U

EU 184U EU 184U IM 312-5

IM312-5
EU 187U EU 187U
5 A max.

(0.5m)

S5-135U/155U IM300-5 EU 184U IM 312-5

CC EU 187U
5 A max.
(1.5m)

Figure 7-6 Centralized Communication Between Central Controller and Expansion Units without a Power Supply
Unit
The EU with the highest current consumption should be positioned as closely
as possible to the CC.

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7-8 C79000-G8576-C199-06
 Interface Modules

7.2 The 301 and 310 Interface Modules

The IM 301 is used to connect I/O modules and signal preprocessing modules
(IPs) to a CC in a distributed arrangement (allowing for possible
configurations) via an
EU 183U
EU 185U (only input/output modules)
expansion unit.
You can connect up to four EUs to a CC in distributed arrangement via the
IM 301. If you use the 721 connecting cable, the total cable length from the
CC to the last EU may be up to 200 m. The distributed connection is made
via the lower front connector of the module. Use the IM 310 interface
module in the EU to be connected in a distributed arrangement:

EU Interface Module EU Type CC Interface Module

IM 301 EU 183U, IM 310

EU 185U (only I/O
modules)

Apart from the distributed EUs, you can connect the following expansion
units in a centralized arrangement:
EU 183U
EU 184U
EU 187U

The centralized connection is made via the upper front connector of the
module. Use the following interface modules, according to the EU to be
connected in a centralized arrangement:

EU Interface Module EU Type CC Interface Module

IM 301-5 EU 184U, EU 187U IM 312-5

IM 301-3 EU 183U IM 312-3

Unused centralized connections of the IM 301-3 and unused distributed

connections of the IM 301-3 and IM 301-5 must be terminated with
terminators. The same applies to the last IM 310.
You may only set module addresses in the EU which you are not yet using in
the CC. This applies to the normal (P) and extended (O) areas.

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C79000-G8576-C199-06 7-9
Interface Modules

7.2.1 Indicators and Controls

IM 301:
Fault LEDs
When the CPU is restarted, the red LED 1 and/or LED 2 lights up if the
internal supply voltage (5 V DC) or external load voltage (24 V DC) fails.
The IM 310 has no indicators or controls.

34 18 1 34 18 1

Centralized
Connection

50 33 17 50 33
17
Fault

Fault

Fault

34 1 34 1
18 18

Distributed
Connection

50 33 17 50 33
17

IM 301 IM 310

Figure 7-7 Front Plate of the IM 301 and IM 310

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7-10 C79000-G8576-C199-06
 Interface Modules

7.2.2 Modes/Jumper Assignments of the IM 301

Jumper
Assignments

16 9

1 8

X3 J3
X1

16 9
LED1
27

LED2
1 8

J4 *)
X2
X4

J1

*) Not on the IM 301-5

Figure 7-8 Location of Jumpers on the IM 301 (when Delivered)

You must insert jumper 8-9 at location 7 for address setting on the extended
I/O area (O area). All other jumpers must remain in the factory settings.

System Manual
C79000-G8576-C199-06 7-11
Interface Modules

The following figures show distributed communication between central

controller and expansion units via the IM 301 and IM 310.

Additional EU 183U Additional EU 184U, EU 187U

(Centralized) (Centralized)

EU 183U EU183U IIM312–3 EU 184U IM 312–5

IIM312–3 EU 187U

760–0AB11
Terminator IM 310 IM 310

CC IM301–3
EU 183U IM300–3 EU 183U IM 300–5
S5–135U/155U

760–0AA11 Terminator

All 721 Connecting Cables

To Additional Expansion Cabinets
(up to 4 per IM 301)

200m max.

Figure 7-9 Connection of EU 183Us to the Central Controller via the IM-301-3

Additional EU 184U, EU 187U Additional EU 184U, EU187U

(Centralized) (Centralized)

EU 184U
EU 184U IM 312–5 EU 183U IM 312–3 IM 312–5
EU 187U EU 187U

IM 310 IM 310

IM 301–5 IM 300–3
S5–135U/155U EU 183U IM 300–5
EU 183U
CC

760–0AA11
Terminator 760–0AA11 Terminator

All 721 Connecting Cables

to Additional Expansion Cabinets
(up to 4 per IM 301)

Figure 7-10 Connection of EU 184/EU 187 U to the Central Controller via the M 301-5

System Manual
7-12 C79000-G8576-C199-06
 Interface Modules

7.3 The 304 and 314 Interface Modules

The IM 304 and IM 314 are used to connect I/O modules, signal
preprocessing modules (IPs) and communication processors (CPs) to a CC in
a distributed arrangement via the
EU 185U
ER 701-3
expansion units.
You can also use the IM 304 and IM 314 to connect I/O modules to a CC in a
distributed arrangement via the
EU 183U
ER 701-2
expansion units.

Line Length You can connect up to two-times four EUs in a distributed arrangement via
one IM 304. If you utilize the 721 connecting cable, the total line length from
the CC to the last EU may be 600 m per run. You can connect additional EUs
in a centralized arrangement to the distributed EUs.
You can insert up to four IM 304s in one CC.
The IM 304 EU interface module is complemented by the IM 314 CC
interface module. In fault-tolerant systems, you must use the IM 314R CC
interface module together with the IM 304 (refer to the S5-155H manual).

EU Type EU Interface Module CC Interface Module

EU 183U IM 304 IM 314

EU 185U
ER 701-2
ER 701-3

You may only set module addresses in the EU which you do not use in
the CC. This also applies when the EU is addressed in the extended (O) area,
IM3 area or IM4 area.

System Manual
C79000-G8576-C199-06 7-13
Interface Modules

7.3.1 Indicators and Controls

Fault LEDs
A FAULT LED lights up
if the power supply fails in an expansion unit;
if there is no terminator at the last IM 314;
in the event of a cable open-circuit or wrong setting of DIL switch S3 for
the IM 304;
or if an EU which is ready and operational is connected to an interface
which is switched off.

34 1 34 1
18 18

Interface (X3)

50 33 17 Fault Signal: 50 33 17

Interface (X3) Faulty

Fault

Fault

Fault Signal:
34 1
Interface (X4) Faulty 34 1
18 18

Interface(X4)

33 17 33
50 50 17

IM 304 IM 314

Figure 7-11 Front Plates of the IM 304 and IM 314

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7-14 C79000-G8576-C199-06
 Interface Modules

7.3.2 Modes/Jumper Assignments of the IM 304

You must match the IM 304 to the cable length with jumper X11.

Jumper Plug X11

9 7 5 3 1 9 7 5 3 1 9 7 5 3 1 9 7 5 3 1 9 7 5 3 1
Jumper
Location *)

10 8 6 4 2 10 8 6 4 2 10 8 6 4 2 10 8 6 4 2 10 8 6 4 2
Cable Length 10m max. 100m max. 100 to 250m 250 to 450m 450 to 600m

*) This setting is only permissible for IM 304 - IM 324R communication in the S5-155H PLC.

The longest communication path, i.e. the sum of cable lengths at interface of
X3 or X4, is governed by the location of jumper X11.

Jumper
Assignments

X1
X3

LED2 X22
OFF ON
ON
Jumper X21/X22 OFF 1
set to OFF if no ON
X13 2
3
expansion unit is OFF
connected. S3
1
X21 2
LED1 3
9 753 1
X14 X12 321

X4 X15 X2
10 8 6 4 2
X11

Figure 7-12 Location of Jumpers on the IM 304 (when Delivered)

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C79000-G8576-C199-06 7-15
Interface Modules

Purpose of the
Jumpers

Function Jumper Settings

Interface X3/X4 ON
– Switched on X22/X21 at “ON” OFF
– Switched off 1) X22/X21 at “OFF” ON
OFF

“I/Os not ready” message relayed 1

– no X15 no jumpers 2
3
– yes X15 jumper 1-2
1
2
3

“I/Os not ready” message when 1

2
– 1 interface not ready X14 jumper 1-2 3
– 2 interfaces not ready X14 jumper 2-3 1
2
3

Set cable length between 304 / 314 X11 9 7 5 3 1

– 0 to 100 m Jumper 3-4
– 100 to 250 m Jumper 5-6
– 250 to 450 m Jumper 7-8
– 450 to 600 m Jumper 9-10
10 8 6 4 2

1) Jumper X22 is assigned to interface X3.

Jumper X21 is assigned to interface X4

All other jumpers and switches must remain at the factory settings.

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 Interface Modules

7.3.3 Modes/Jumper Assignments of the IM 314

Jumper Set the jumpers according to the expansion unit in use.

Assignments

Operation in the EU 185U Operation in the EU1 83U

off off
21 321 S1 21 321 S1
on J1 J2 on
J1 J2

X1
X3 321 321 X1
J3 X3 J3

X4
X2 X4
X2

Operation in the ER 701-2, ER 701-3 (S5-115U)

21 321 off
S1
J1 J2 on

X3 X1
321
J3

X4
X2

Figure 7-13 Location of Jumpers on the IM 314

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C79000-G8576-C199-06 7-17
Interface Modules

Setting the
Addresses

I/O Area Address Switch Setting

0 = OFF, 1 = ON

P area: F000 - F0FF S1: 0000 *)

irrelevant
n
i OFF
c
O area: F100 - F1FF 0001 ON
h
t
r
e
IM3 area:FC00 - FCFF 1100 l
e-
v
a
IM4 area:FD00 - FDFF 1101 n
t

*) Factory setting

The I/O area address is set on the IM 314. This setting applies only to the
digital and analog I/O modules.
Address areas P, O, IM3 and IM4 are available. To address the digital and
analog I/O modules in these areas, set the switches by depressing the
individual rockers.
In the STEP 5 standard operation set, you only address the P and O areas.
Module addresses used in the CC cannot be used in the EU in the P area, O
area, IM3 area and IM4 area.
If you do not insert I/O modules in the central controller, an address space of
256 bytes is available in each I/O area for input/output addresses.
The following figure shows communication between the central controller
and expansion units via the IM 304 and IM 314.

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7-18 C79000-G8576-C199-06
 Interface Modules

Additional EU 184U, EU 187U

(Centralized)

IM 312–3 IM 312–3 EU 184U IM 312–5

EU 183U EU 183U
EU 187U

IIM 314
IM 314 IM 314

EU 183U EU 183U IM 300–3 EU 183U IM 300–5

IM 300–3
EU 185U EU 185U EU 185U

760–1AA11 Terminator

All 721 Connecting Cables

IM 312–3 EU 184U IM 312–5

EU 183U
EU 187U

IM314 IM 314

EU 183U EU 183U
S5–135U/155U IM 300–3 IM 300–5
CC
IM304 EU 185U EU 185U

760–1AA11 Terminator

All 721 Connecting Cables

To Additional Expansion Cabinets (Distributed)
(up to 4 per IM 304)

600m max.

Figure 7-14 Communication Between Central Controller and Expansion Units via the IM 304/IM 314

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Interface Modules

7.4 Technical Specifications

Important for the USA and Canada

The following approvals have been obtained:
UL Listing Mark
Underwriters Laboratories (UL) to
Standard UL 508, Report E85972 and E116536 for the IM 300-5LB11
CSA Certification Mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533C and LR 48323 for the IM 300-5LB11

Given in the following are the technical specifications of the IMs and pin
assignments of the connecting cable and terminator.

General Specifications

Degree of protection IP 20
Insulation class C to VDE 0160
Operating temperature 0 to 55 oC
Transportation and storage temperature – 40 to 70 oC
Relative humidity 95 % max. at 25 oC, no condensation
Mechanical requirements see description of central controllers
Supply voltage (internal) 5V+5%

Specifications for Specific IMs

Interface IM 300 IM 300 IM 300 IM 301 IM 301 IM 304 IM 310 IM 312 IM 314
module (-5CA) (-5LB) (-5CA) (-3AB)
Max. cur- 0.6 A 0.6 A 50 mA 0.75 A 0.75 A 1.2 A 0.7 A 0.2 A 1.0 A
rent con-
sumption
Max. cur- – 5A 2A 5A – – – – –
rent per in-
terface
Weight, 0.35 kg 0.35 kg 0.25 kg 0.3 kg 0.3 kg 0.35 kg 0.3 kg 0.35 kg 0.3 kg
approx.

7.4.1 6ES5 721 Connecting Cable

The 6ES5 721-xxx connecting cable is intended for interconnection of the
CC/EUs. Refer to the catalog for the SIMATIC length codes.

System Manual
7-20 C79000-G8576-C199-06
 Interface Modules

. 34 50 . . 17 1
.
. 1 . . 50 34 .
17

Connector Bundle Core Connector

50-Way Terminal ID Sheath ID Foil Color 50polig Terminal
20 wh 20
21 1 rd br 21
4 gn 4
5 ye 5
Red
18 gr 18
19 pk 19
No. 16
2 bl 2
3 rd 3
24 wh 24
25 2 gn br 25
8 gn 8
9 ye 9
Green
22 gr 22
23 pk 23
No. 17
6 bl 6
7 rd 7
26 wh 26
27 3 wh br 27
10 gn 10
11 ye 11
Yellow
42 gr 42
43 No.18 pk 43
44 bl 44
45 rd 45
28 wh 28
29 4 wh br 29
12 gn 12
13 ye 13
Brown
46 gr 46
47 pk 47
No.19
30 bl 30
31 rd 31
34 wh 34
35 5 wh br 35
36 gn 36
37 ye 37
Black
38 gr 38
39 pk 39
No.20
40 bl 40
41 rd 41
48 wh 48
49 6 rd br 49
14 gn 14
15 ye 15
Blue
32 gr 32
33 No.21 pk 33
– Shield –

Figure 7-15 Conductor Assignments of the 721 Connecting Cable

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Interface Modules

7.4.2 6ES5 7602 Terminator

The IM 314 of the last expansion unit of each run is terminated with the
6ES5 760-1AA11 terminator. The IM 312 and IM 301-3 (with a free
centralized connection) is terminated with the 6ES5 760-0AB11 terminator.
The IM 301-3 (with a free distributed connection) is terminated with the
6ES5 760-0AA11 terminator.

1 17

34 50

Connector 180-ohm-Resistor Connector Connector 180-ohm-Resistor Connector

Pin or Jumper Pin Pin or Jumper Pin

28 8 28 8
29 9 29 9

26 6 26 6

27 7 27 7
46 4 46 4

47 5 47 5
44 2 44 2

45 3 45 3

42 24 42 24

43 25 43 25
38 22 38 22

39 23 1)
39 23

34 20 34 20
35 21 35 1) 21

36 18 36 18

37 19 37 1) 19

40 12 40 12
41 13 41 1) 13

14 / 48 10 48 10

16 11 49 2) 11

50 30 15 30

15 / 49 31 16 31

14
6ES5 760–0AA11
50
Connector 180-ohm-Resistor Connector
Pin or Jumper Pin
1)100 ohms
5 6 2)200 ohms

12 22 6ES5 760–1AA11

6ES5 760–0AB11

Figure 7-16 Pin Assignments of the 760 Terminator

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Digital Input/Output Modules 8
Described in this chapter are the installation, wiring and operation of digital
input modules and digital output modules. The 432 digital input module and
the 482 digital input/output module have special features. These are
discussed in separate sections. The technical specifications and front
connector assignments for the individual modules are shown at the end of
this chapter.

Chapter Section Description Page

Overview 8.1 Technical Description 8-2
8.2 Installation and Startup 8-14
8.3 Common Technical Specifications 8-28
8.4 Specification Sheets for the Modules 8-30

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Digital Input/Output Modules

8.1 Technical Description

The description below applies to the following modules:

Type of Modules Inputs/Outputs Input/Output Isolation/ Groups *)

C
Current
t
Number Rated Voltage

Digital input modules

6ES5 420-4UA13/14 32 24 V DC 8.5 mA no –
6ES5 430-4UA13/14 32 24 V DC 7.0 mA yes 1
6ES5 431-4UA12 16 24 to 60 V DC 4.5 to 7.5 mA yes 16
6ES5 432-4UA12 32 24 V DC/alarm 8.5 mA yes 4
6ES5 434-4UA12 32 5 to 15 V DC 1.3 mA yes 1
6ES5 435-4UA12 16 24 to 60 V AC 15 to 25 mA yes 2
6ES5 436-4UA12 16 115 to 230 V AC 15 to 25 mA yes 2
6ES5 436-4UB12 8 115 to 230 V AC 15 to 25 mA yes 8
Digital output modules
6ES5 441-4UA13/14 32 24 V DC 0.5 A no –
6ES5 451-4UA13/14 32 24 V DC 0.5 A yes 1
6ES5 453-4UA12 16 24 V DC 2.0 A yes 16
6ES5 454-4UA13/14 16 24 V DC 2.0 A yes 1
6ES5 455-4UA12 16 24 to 60 V AC 2.0 A yes 2
6ES5 456-4UA12 16 115 to 230 V AC 2.0 A yes 2
6ES5 456-4UB12 8 115 to 230 V AC 2.0 A yes 8
6ES5 457-4UA12 16 24 to 60 V DC 0.5 A yes 16
6ES5 458-4UA12 16 60 V relay 0.5 A yes 16
6ES5 458-4UC11 16 250 V AC relay 5A yes 2

Digital input/output modules

6ES5 482-4UA11 16 inputs and 24 V DC 8.5 mA (inputs) yes 1
16 outputs or 0.5 A (outputs)
24 inputs and
8 outputs

*) All inputs and outputs having a common 0 V ground form a group.

Technical specifications which are common to all modules are given in

Section 8.3. The special technical specifications for all modules can be found
in Section 8.4.

I/O Modules Digital input and digital output modules are I/O modules which allow the
processing of widely differing process signals with the S5-135U/155U
programmable controller. They can also be used via an adapter casing in the
S5-115U PLC.

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 Digital Input/Output Modules

Digital Input A digital input module converts the process signals to the internal signal
Modules level in the module. Interference is suppressed by the input circuitry, and the
logic states at the inputs are indicated with LEDs on the front strip of the
module. With most digital input modules (except the 420), the signals are
isolated from the central ground point when received. Inputs relating to the
same group are isolated from inputs of another group, but not from each
other.

Digital Output The control signals processed in the PLC are output via digital output
Modules modules at a signal level suitable for the actuator, e.g. contactor, solenoid
valve, etc. For the voltages and currents required in the process, modules
with appropriate output circuitry are available.
With most digital output modules (except the 441), the signals are isolated
from the central ground point when relayed to the outputs. Outputs relating to
the same group are isolated from outputs of another group, but not from each
other.

BASP If a digital output module receives a “command output inhibit” (BASP, cf.
Programming Guide and Chapter 4) from the CPU, the outputs are set to
zero.
When the supply voltage of the central controller or expansion unit has been
switched on or when the CPU is at STOP, the outputs are set to zero.

Signal Output, Signal output H+ on digital output modules for direct voltage emits a signal
Short-Circuit when a short-circuit to ground (L-) or overcurrent has been detected at one or
Detection more outputs currently at logic 1. Only short-circuits which are effective for
more than 0.5 to 1 s are detected. Short-circuits are only detected at
connected outputs. The signal outputs are decoupled by diodes. Up to 16
outputs can be connected in parallel. Ensure that isolation is not defeated by
the parallel connection of outputs.
To ensure functioning of the signal output, you must connect terminal 1L+ to
24 V on the 441, 451 and 454 modules. On the 453 and 457 modules, the
floating signal output must be powered separately.

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Digital Input/Output Modules

8.1.1 Design
The modules are designed as plug-in PCBs for central controllers and
expansion units with backplane connector and with a blade connector to
accept a plug-in front connector. The front connector has screw or crimp
terminals and is available separately; you can connect the process signal lines
to it directly.

LED Indicators Fitted to each module is a strip with green LEDs to indicate the logic states
of inputs or outputs. The LEDs are arranged in bytes and marked bit 0 to 7.
Output modules for direct voltage additionally have red LEDs to indicate
short-circuits between output lines and ground (L-) within a group. Output
modules for alternating voltage have red LEDs to indicate a fuse failure.

Addressing Switch Fitted on each module is an addressing switch with six, seven or eight
rockers to set the module address.
The modules are protected on both sides by covers.

Addressing Switch

Blade Connector

Front Connector

LEDs

Figure 8-1 Digital Input Module

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 Digital Input/Output Modules

8.1.2 Function of the Enable Inputs

The digital input/output modules have an enable circuit. You can use the
enable inputs to implement electrical interlocks for certain modules or switch
off individual modules, whilst the PLC is in operation.
This means that:
The module can no longer be addressed by the user program.
All outputs of digital output modules are set to zero.
Modules which are switched off can be removed or inserted during operation.
If this is not necessary, operate the module with the enable input switched
off.

With an Active On digital input/output modules with DC voltage inputs or outputs, the
Enable Input enable circuit requires that enable inputs F+ and F- be wired in the front
connector. Enabling is achieved by applying an external voltage to inputs
F+/F-. Modules for AC voltage have a wire jumper in the front connector.
When the front connector is swivelled away from the front strip of the
module, the supply of power to the enable input is interrupted, i.e. the wire
jumper in the front connector is removed; the module is switched off and can
no longer be addressed by the user program.
When the front connector is swivelled away, i.e. the voltage is removed from
the enable inputs, a timeout (QVZ) occurs at the CPU (see the Programming
Guide for the particular CPU).
Apart from the 6ES5 458-4UC11 digital output module, all digital
input/output modules additionally offer the facility for changing the enable
mode. The modules have a jumper accessible from above in the vicinity of
the addressing switch (see Figure 8-2).

Enable Jumper

Figure 8-2 Location of the Enable Jumper

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Digital Input/Output Modules

Jumper inserted: Enable input (F+/F-) active (factory setting)

Jumper open: Enable input (F+/F-) switched off

With Enable Input If removal and insertion of modules during operation is not required, you
Switched Off must remove the plug-in jumper for changeover of the enable mode. Wiring
of the enable inputs (F+/F-) can then be dispensed with.

Examples of Almost power-free shutdown of individual subprocesses, i.e. outputs of

Functioning of the various modules can be operated from a common load supply and yet
Enable Inputs activated separately.
The load voltage of each individual module can be monitored without
additional circuitry. Any reactions to failure of the load voltage can be
programmed in the QVZ (timeout) organization block.
You must observe the following when configuring systems:

Switching on At the latest 100 ms after power-up of the PLC, the voltage must be
present at the enable inputs of the I/O modules.

Switching off When the PLC has been switched off, the voltage at the enable in-
puts of the I/O modules must still be present as long as voltage is
applied to the CC/EU.

You should observe the following instructions for switching off PLCs and
equipment for supplying power to the enable inputs:
24 V supply for CC/EU and I/Os

a)
Battery

I/O Modules b)

F+
CC/EU
L+

24V Power Supply L+

24 V DC

Enable supply from:

a) Battery
b) Terminals for 24 V on the front plate of the power supply

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 Digital Input/Output Modules

Separate or When there is a need to switch off the load power supply separately without
Common affecting the enabling of modules, there are the following possibilities for
Shutdown of the producing the enable voltage. These exist even when the power supply is
CC/EU and Load used without an additional capacitor and common shutdown.
Power Supply
230 V AC supply for CC/EU and load power supply

a) b) Battery

–951 I/O Modules c)

F+
CC/EU
L+

Power Supply L+
230V AC

Load Power Supply 24V

Enable supply from:

a) 6ES5 951-4LB11 load power supply
b) Battery
c) Terminals for 24 V on the front plate of the power supply

Common Proper functioning is ensured if the 24 V load power supply has an output
Shutdown of the capacitance of at least 4700 mF per 10 A of load current.
CC/EU and Load
Other units (load power supply for 20 or 40 A) which do not meet this
Power Supply with
condition can be adapted to this requirement by connecting a 10000 mF/40 V
a 230 V AC Supply
capacitor in parallel.

I/O Modules

F+
CC/EU

L+

Power Supply
230V AC 10000µF/
40V

Load Power Supply 24V

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Digital Input/Output Modules

8.1.3 Special Features of the 432 Digital Input Module

The 432 digital input module accepts 32 process signals and emits a process
alarm if the logic state at one of its inputs changes.
You can operate the module in the following modes:
Modes
without process alarm (“normal” digital input module)
with initiation of a process alarm via interrupt
with initiation of a process alarm via IB 0 (only in conjunction with
CPU 948)
To operate the module with process alarm via IB 0, you must address it in the
normal (P) area from byte 128 because
the automatic updating of the process image might acknowledge a process
alarm without the system program having detected and interpreted this
alarm;
only modules addressed in the normal (P) area can initiate a process
alarm via IB 0.
Reaction Time The time for reaction of the module to a process alarm is mainly determined
by the input circuitry. You can set the reaction time to one of the values
0.3 ms, 1 ms or 3 ms with switch S5. Note that the filtering effect decreases
with shorter reaction times, and interference may be received as useful
signals (effect of the line length, see the technical specifications).

Operation without To operate the module without process alarm, you can insert it at any slot for
Process Alarm I/O modules and address it in the entire I/O area. If you address it in the area
PB/PY 0 to PB/PY 124, it will be within the automatic updating of the
process image.
Settings on the Make the following settings on the module to operate it without process
Module alarm:

Step Action
1 Open jumpers X3 and X4
2 Set switch rows S1 and S2 to Off
S1 S2

0 IR-A 0 Bit 0
1 IR-B 1 Bit 1
2 IR-C 2 Bit 2
3 IR-D 3 Bit 3
4 IR-E 4 Bit 4
5 IR-F 5 Bit 5

:OFF 6 IR-G 6 Bit 6

:ON 7 INT 7 Bit 7

Figure 8-3 Switch Settings for Operation without Process Alarm

The setting for switch row S3 is arbitrary in this mode.

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Operation with To operate the 432 digital input module with process alarm via an interrupt,
Process Alarm via you must either operate it in the CC where only certain slots have interrupt
Interrupt lines (see Chapter 4), or in an interrupt-capable EU connected to the CC with
IM 307 - IM 317 interfacing (see also the IM 307 - IM 317 manual). In the
CC, you may only operate the module in this mode at slots with an interrupt
line (interrupt source).
So that the module can initiate a process alarm for a change of logic state, the
alarm must be processed by an alarm routine (alarm OB) in the user program,
with automatic acknowledgement of the alarm. To avoid loss of an alarm, it
must not be possible for the alarm OB to be interrupted by process alarms.
The CPU must process the process alarms with level triggering (see
Programming Guide of the CPU).

Scanning the Example:

Process Inputs Program the following operations in the corresponding alarm OB:
L PW132 (load I/O word)
T FW10 (transfer flag word)
L PW134 etc.
T FW12
Only the flag word may be accessed during the cyclic program.
Accessing the I/O bytes in the process image will result in alarm loss.
Addressing of the module must therefore be above address 127. Double
accessing of I/O bytes, even from different CPUs, is not permissible (alarm
loss).
The four I/O bytes of a module must be scanned successively and in
ascending order. The scanning of byte n inhibits all input circuits of the
module, and the scanning of byte (n + 3) enables them again.

Settings on the Make the following settings on the module to operate it with a process alarm
Module via interrupt:

Step Action
1 Open jumper X4 and close jumper X3.
2 Set the interrupt line at switch row S1: the switch relating to the
desired interrupt line should be set to On. Set all other switches
to Off. You can set the same interrupt line on several modules.
3 Set switch row S2 to Off.
4 Set switch row S3 to choose whether the interrupt is to be initi-
ated with a positive-going (leading) or negative-going (trailing)
edge. The setting of a pair of switches applies to an entire byte.

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Digital Input/Output Modules

S1 S2 S3
0 IR-A 0 Bit 0 0 } Byte 3
1 IR-B 1 Bit 1 1
2 IR-C 2 Bit 2 2 }
3 IR-D 3 Bit 3 3 Byte 2
4 IR-E 4 Bit 4 4 } Byte 1
5 IR-F 5 Bit 5 5
: OFF 6 IR-G 6 Bit 6 6 }
: ON 7 INT 7 Bit 7 7 Byte 0

Process Interrupt via IR-C

Byte 0: Positive-Going Edge
Byte 1: Negative-Going Edge-
Byte 2: Both Edges
Byte 3: No Process Interrupt

Figure 8-4 Switch Settings for Operation with Process Alarm via Interrupt (Example)

Operation with In this mode, a process alarm is initiated via input byte IB 0. This mode is
Process Alarm only possible in conjunction with a CPU 948 in single-processor operation.
via IB 0
To operate the 432 digital input module with process alarm via IB 0, you can
insert it at any I/O slot.
When you use the module in the CC, you must not set any other input
module to address 0 (i.e. neither in the normal (P) nor in the extended (O)
area).
If you use the module in an EU which is addressed in the normal area, you
must not set any other input module in the EU to address 0 in the normal
area.
So that the module can initiate a process alarm for a change of logic state, the
alarm must be processed by an alarm routine (alarm OB) in the user program,
with automatic acknowledgement of the alarm. To avoid loss of an alarm, it
must not be possible for the alarm OB to be interrupted by process alarms.
The CPU must process the process alarms with level triggering (see
Programming Guide of the CPU).

Scanning the Example:

Process Inputs Program the following in the alarm OB which you have preset with byte IB 0
and switch S2:
L PW128 (load I/O word)
T FW0 (transfer flag word)
L PW130 etc.
T FW2

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 Digital Input/Output Modules

Only the flag word (FW) may be accessed during the cyclic program.
Accessing the I/O bytes in the process image will result in alarm loss.
Addressing of the module must therefore be above address 127. Double
accessing of I/O bytes, even from different CPUs, is not permissible (alarm
loss).
The four I/O bytes of a module must be scanned successively and in
ascending order. The scanning of byte n inhibits the input circuit of the
module, and the scanning of byte (n + 3) enables them again.

Settings on the Make the following settings on the module to operate it with a process alarm
Module via IB 0:

Step Action

1 Insert jumpers X3 and X4

2 Set switch row S1 to Off.

3 Set bit 0 on switch row S2 to On, and all other switches to Off.

4 Set switch row S3 to choose whether the interrupt is to be initi-

ated with a positive-going (leading) or negative-going (trail-
ing) edge. The setting of a pair of switches applies to an entire
byte.

S1 S2 S3
0 IR-A 0 Bit 0 0 } Byte 3
1 IR-B 1 Bit 1 1
2 IR-C 2 Bit 2 2 }
Byte 2
3 IR-D 3 Bit 3 3
4 IR-E 4 Bit 4 4
} Byte 1
5 IR-F 5 Bit 5 5
:OFF 6 IR-G 6 Bit 6 6 } Byte 0
:ON 7 INT 7 Bit 7 7

Byte 0: Positive-Going Edge

Byte 1: Negative-Going Edge-
Byte 2: Both Edges
Byte 3: No Process Interrupt

Figure 8-5 Switch Settings for Operation with Process Alarm via IB 0 (Example)

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Digital Input/Output Modules

Using Two or More You can use up to eight 432 digital input modules with process alarm via
432 Digital Input IB 0 in one PLC. The modules must all be inserted in the CC or in the same
Modules with EU for error-free acknowledgement of address 0. Each module reserves one
Process Alarm bit in IB 0. You must set one module to bit 0 on switch row S2; on the other
via IB 0 modules you must remove jumper X3 and set one of the other bits 2 to 8.
The module you have set to bit 0 is known as the master, and the other
modules are slaves. On the master module, you must additionally set the
number of slave modules on switch row S2. Refer to the labeling on the
module cover.

Using the 432 You can also use the 432 digital input module with process alarm together
Digital Input with other alarm-generating modules.
Module with other
Alarm- To operate the module with process alarm via interrupt, you must observe the
Generating following:
Modules
f a process alarm is generated via an interrupt, the I/O words of all 432
digital input modules involved in this process alarm must be read in the
alarm-processing OB; with IPs, the process alarms must be acknowledged
(refer to the manuals of the IPs).
The modules must be inserted at interrupt-capable slots (see Chapter 4).
To operate the module with process alarm via IB 0, you must observe the
following:
You may use up to eight alarm-generating modules.
The modules must all be inserted in the CC or all in the same EU.
You must operate the 432 module as the master. If you use two or more
432 digital input modules with other alarm-generating modules, you must
operate one 432 as the master and all others as slaves.

8.1.4 Special Features of the DI/DQ 482

The DI/DQ 482 digital input/output module is an I/O module which allows
the processing of process signals in conjunction with the IP 257, with the
S5-135U/155U PLC and the EU 185U (see the IP 257 manual). Described in
the following is the operation of the DI/DQ 482 without IP 257.
The DI/DQ 482 has 32 channels which are jointly isolated, i.e. there is no
subdivision into groups in the module. Channels 0.0 to 0.7 are digital outputs,
Channels 2.0 to 3.7 are digital inputs; Channels 1.0 to 1.7 can be optionally
and individually operated as inputs or outputs.

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 Digital Input/Output Modules

Changeover of the The operation of Channels 1.0 to 1.7 as inputs or outputs merely depends on
I/O byte the user program. You define the byte as an input with a read access to the
DI/DQ; you define the byte as an output with a write access. The
double-function of the byte also allows the output byte to be read out.
Unused channels should not be wired nor addressed by program. When these
channels are used as inputs, it should be noted that the corresponding bits in
the output register remain at logic 0. This resetting of output registers is
executed automatically after power-up of the PLC or EU.

Note
When at least one of Channels 1.0 to 1.7 is operated as an input, the
connected sensors and the 1L+ terminal must have the same power supply. If
this is not the case, the input voltage acts on the 1L+ terminal. The resultant
supply to the output amplifiers of Channels 0.0 to 1.7 causes currents to be
drawn via the wired input terminal; these currents may assume different
values, depending on the control states of the outputs.

With the DI/DQ 482, you must set slide switch S2 to setting 1 for operation
without the IP 257.

Slide Switch S2

Local Bus Interface

Figure 8-6 Slide Switch S2 on the DI/DQ 482

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Digital Input/Output Modules

8.2 Installation and Startup

This section describes how to prepare digital input/output modules for

installation, and how to install and wire them.

8.2.1 Setting the Module Address

You set the module address on the addressing switch. This also establishes
the necessary assignments between user program and process connection.
The address of the digital input modules (input bytes IB 0 to 255 or 252 for
the DI/DQ 482) and digital output modules (output bytes QB 0 to 255 or 252
for the DI/DQ 482) is the sum of the binary significances established by
depressing the individual rockers in the On setting ( ).
The modules are addressed by the STEP 5 program under their parameters
(byte address).

Labeling Field You can affix the adhesive label with the desired module address on a
labeling field under the addressing switch. Suitable labels are supplied with
the CC.
The switch rockers with which the module address (IB n or QB n) is
specified as a decimal number, are marked by dots on the label.
Do not use a pencil to set the addressing switch.

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 Digital Input/Output Modules

On Setting Addressing Switch

(Switch Pressed)

Labeling Field for the

Module Address and
Address (Decimal) Marked Switch Settings

Binary Significance

64
32
16
128

8
4

2
1
of the Address Bit

Address Bit

ADB7
ADB6
ADB5
ADB4
ADB3
ADB2
ADB1
ADB0
Figure 8-7 Labeling of the Addressing Switch (Extract from Module Labeling)

The address byte under which the module is referenced by the STEP 5
program is independent of the slot.

Start Address For modules with 16 or 32 inputs or outputs, i.e. 2 or 4 bytes, only the lowest
address (start address) is set for the first byte. The addresses of the following
bytes of the same module are decoded on the module.
If, for example, the address 20 is set for a 16-bit module (2 bytes), the
following address 21 is decoded internally and is no longer available. The
next free address would be 22.
For a 32-bit module (4 bytes) with start address 20, addresses 21, 22 and 23
would be decoded internally. The next free address would be 24.
Addresses already assigned must not be set again.
However, digital input and output modules may be given the same address
because they are referenced by different commands in the user program.

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Digital Input/Output Modules

Example
Digital input module with 8 inputs (IB 23) or
digital output module with 8 outputs (QB 23).
The address is the sum of binary significances set with the individual coding
switches:
23 = 1 + 2 + 4 + 16 = 20 + 21 + 22 + 24

On Setting
(Switch Pressed)

IB 23 (or QB 23)

64
32
16
128

8
4

2
1
ADB5
ADB4
ADB3
ADB7
ADB6

ADB2
ADB1
ADB0
Example
Digital input module with 32 inputs (IB 80) or
digital output module with 32 outputs (QB 80).
The address is the sum of binary significances set with the individual coding
switches:
80 = 16 + 64 = 24 + 26

On Setting
(Switch Pressed)

IB 80 (or QB 80)
64
32
16
128

8
4

2
1
ADB5
ADB4
ADB3
ADB7
ADB6

ADB2
ADB1
ADB0

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 Digital Input/Output Modules

The following table is an overview of settings for addressing digital

input/output modules.

Significance Byte Address

1
2
4
8
128
64
32
16

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95

96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111

112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143

144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159

160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
1)
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223

224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255

8 Channels x x x x x x x x x x x x x x x x
16 Channels x x x x x x x x
32 Channels x x x x

1) Address range for digital input and digital output modules

whose signals are not routed via the process image.
Switch Setting
On
Significance
8
4
2
1
64
32
16
128

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Digital Input/Output Modules

8.2.2 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched. During operation, the front connector
and module must not be removed or inserted without the enable jumper or
active enable circuit.

Install a digital input/output module as follows:

Step Action

1 Release the upper locking bar on the subrack and swivel it up-
wards and out.

2 Insert the module at the desired slot in the subrack and push it
back in the guides.

3 Latch the module by rotating the locking pin by 90° at the

lower end of the module.

4 Engage the front connector on the support pin of the module

and swivel it up. The width of the support pin also provides
keying to prevent front connectors from being fitted to the
wrong modules (e.g. 230 V AC front connector on 24 V DC
modules).

5 Tighten the screw in the upper part of the front connector.

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 Digital Input/Output Modules

Remove a digital input/output module as follows:

Step Action

1 Release the upper locking bar on the subrack and swivel it up-
wards and out.

2 Slacken the screw in the upper part of the front connector.

This causes the front connector to be pressed out of the female
connector of the module. Contacts F+ and F- of the enable in-
put at the upper end of the front connector are thus opened first.

3 Swing the front connector out and lift it away from the support
pin of the module.

4 Release the module, if necessary, by rotating the locking pin by

90o. You can pull the module out of the subrack with a grip
which swivels outwards.

Module

Front Connector

Support Mount
5
Support Pin
4
2
3

Figure 8-8 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Wiring Comply with VDE Specifications 0100 and 0160 to carry out the wiring of
the supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules. Detailed information on the
supply of power, cabinet assembly, cabinet ventilation, cabinet wiring and
protective measures can be found in Chapter 3.

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Digital Input/Output Modules

8.2.3 Marking of Modules

For the marking of modules and front connectors, a set of labels is supplied
with the modules for the labeling, and a set of labels with the addresses is
supplied with the central controller. Figure 8-9 shows the locations of the
labels. The self-adhesive address label is pre-printed. You can mark the strips
to identify the signal line terminals.

1 2 4 1 5 3

Figure 8-9 Marking and Labeling of Modules

1 Address label with the module address (output byte QB n or input byte IB n) under
which the module is addressed by the STEP 5 program (address labels are supplied
with the PLC), and for marking the addressing switch settings
2 Labeling strip with the product designation which is color-coded to distinguish
between the various module types, as well as fields to mark the version and for
user-related labeling of channels.
Color codes:
Digital inputs for DC voltage blue
Digital inputs for AC voltage red
Digital outputs for DC voltage green
Digital outputs for AC voltage orange
Update the version when replacing modules!
3 Label with module address and marking of the required settings for the addressing
switch
4 Labeling strip for terminal designations or connection diagrams for the front connector
5 Name plate

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8.2.4 Connecting the Signal Lines

The modules have 20 or 42-way blade connectors with contact blades
measuring 2.4 x 0.8 mm. Front connectors for 20 and 40 mm mounting width
with crimp connection and 40 mm mounting width with screw connection are
provided to connect the signal lines (screwdriver blade width: 3.5 mm,
maximum torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector.
When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal Connector Max. Cross-Sec. of Connector for Front Module 6ES5-

Type Type 6ES5 No of
No. Signal or Sup- Rated Voltage Con-
497-
497 Con-
Con ply Conductor nector For Operation
tacts Width With Fan Without Fan
Crimp 4UA12 42 0.5 to 1.5 mm2 5 to 60 V DC 20 mm 420. 430. –
Connec- 431, 432.
tion 434, 441,
451, 454-14,
458

4UA22 42 0.5 to 1.5 mm2 5 to 60 V DC 40 mm 453, 454, 457 420. 430.

431, 432.
434, 441,
451, 453,
454, 457,
458

4UA42 20 0.5 to 1.5 mm2 24 to 230 V AC 40 mm 435, 436, 455, 456

Screw 4UB12 42 0.5 to 5 to 60 V DC 40 mm 420. 430. 431, 432. 434, 441,

Connec- 4UB32 2 x 2.5 mm2 20 mm 451, 453, 454, 457, 458
tion
4UB22 25 0.5 to 5 to 60 V DC 40 mm 454
2 x 2.5 mm2

4UB42 20 0.5 to 24 to 230 V AC 40 mm 435, 436, 455, 456

2 x 2.5 mm2

Caution
! Only extra-low voltage v 60 V DC with safety separation from system
voltage may be used for the 24 V DC supply and for the 24 V DC input
signals. Safety separation can be implemented to the requirements of,
amongst other sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41
(as functional extra-low voltage with safety separation) or
VDE 0805/EN 60950/IEC 950 (as safety extra-low voltage SELV) or
VDE 0106 Part 101.

System Manual
C79000-G8576-C199-06 8-21
Digital Input/Output Modules

8.2.5 Connection of Outputs in Parallel and Switching On the Load via

a Contact

Caution
! The parallel connection of outputs to increase the load is not permissible.

Digital Output Outputs of modules with the same load voltage supply may be connected in
Modules for DC parallel without additional circuitry.
Voltage
An external diode must be fitted to the output lines of modules fed from
different load voltage supplies (exception: 453, 457). In the case of different
logic states of the two outputs, the maximum permissible output current
corresponds to that of the lower stage.
The contact (e.g. for manual operation) is connected to one of the two L+.

Manual

2L+ A1 A2 1L+
Output 1 Output 2
2L– 1L–

Load

Figure 8-10 Parallel Connection of Outputs for DC Voltage Outputs

Digital Output Outputs can be connected in parallel without increasing the load if they are
Modules for AC connected to the same phase (L) and the same neutral conductor (N).
Voltage
The load must be at least 50 mA per output to keep to the permissible
residual voltage at logic 0. The maximum switching current of 2 A per load
must not be exceeded.

System Manual
8-22 C79000-G8576-C199-06
 Digital Input/Output Modules

The load can also be switched via a contact.

Phase (L)

ELR Manual ELR ELR = Electronic Load Relay

Output 1 Output 2

Load
Neutral (N)

Figure 8-11 Parallel Connection of Outputs for AC Voltage Outputs

Connection of Given here are two examples of the feeding of inputs and outputs of different
Input/Output modules from two power supply units.
Modules to Two
With non-floating input/output modules, the negative terminals (L-) of the
Power Supply Units
power supply units are connected to reference potential (PE) because the
inputs of the 420 module are referred to chassis ground.

Central Ground Point

or Rack or the CC/EU
Reference Potential

0V DI 0V DQ 0V DQ 0V
DI
e.g. 420 e.g. 420 e.g. 441 e.g. 441
L QQQ L Q Q L Q L Q Q and Connection
I I I I I I I I I + + + +
to Protective
Conductor (PE)

2L+

1L+

AC + AC +
230V 230V
_ _
DC DC
_
24V L 24V

Figure 8-12 Feeding of Non-Floating Input/Output Modules from Two Power Supply Units

System Manual
C79000-G8576-C199-06 8-23
Digital Input/Output Modules

With isolated input/output modules the supply voltage is applied separately

to the individual modules.

Reference Potential

e.g.430 DI 0V e.g.431 DI 0V e.g.451 DQ 0V e.g.453 DQ 0V

and Connection
LI I L
_ _ I L_ I L_
I L I L_ I L_ L Q Q Q L_ L Q Q LQ LQ LQ LQ
+ + + + + + + to Protective
Conductor (PE)

1L _
1L+

2L+

_
2L

+ +
AC AC
230V 230V
_ _
DC DC
24V 24V

Figure 8-13 Feeding of Isolated Input/Output Modules from Two Power Supply Units

With isolated modules, the inputs or outputs can be fed from two separate
power supply units in isolation groups created by the internal distribution in
the module.
Note that when inputs or outputs from two isolated groups are connected to
one power supply unit, isolation between the groups is defeated.

8.2.6 Short-Circuit Protection and Fusing

With digital output modules for DC voltage, fuses are provided on the
module, in addition to the electronic short-circuit protection, for the wiring
cables and to protect the module. The fuses also provide protection against
reversal of supply voltage connections and can only be replaced at the
factory.
The electronic short-circuit protection guaranteed in the technical
specifications applies to a resistance which is lower than the specified,
maximum permissible line resistance.
In the event of a short-circuit, two to three-times the rated output current
flows briefly at the output before the switched electronic short-circuit
protection becomes effective. When selecting the load power supply units,
therefore, allow for the increased short-circuit current as well as all
connected output loads (observe the coincidence factor). With unregulated
load power supplies, this overcurrent is generally ensured. With regulated
load power supplies, especially at low output power levels (up to 20 A), you
must allow for a corresponding overcurrent.

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 Digital Input/Output Modules

8.2.7 Arc-Quenching for Inductive Loads

Note
Digital output modules have integrated circuits on the module to quench
inductive loads (refer to the technical specifications of the output modules).

Exception: The 458 digital output module allows the switching of inductive
loads with contact protection submodules.
The integrated circuits on the modules for quenching inductive loads are
disabled if the load circuits are interrupted, either
operationally by contacts and switches,
or by fuses in the event of a fault.
This can result in excessive, inductive breaking voltages which put fault-free
operation at risk.
You can prevent this with additional, external quenching circuitry for the
inductive loads.

DC Voltage AC Voltage
L+ L

Digital Output Digital Output

ELR ELR ELR

Contact, Switch
Contactor,
Solenoid Valve, etc.

L– N

Quenching Device
(Diode, Zener Diode, R/C Network or Varistor)

Figure 8-14 Quenching of Inductive Loads when the Load Circuit is Opened

System Manual
C79000-G8576-C199-06 8-25
Digital Input/Output Modules

External External quenching circuitry is needed when

Quenching
the switching frequency of an output is greater than that specified in the
Circuitry
technical specifications (thermal stress of the integrated circuit for
quenching inductive loads);
disconnection of output lines can be expected;
disconnection of the supply line can be expected.
When selecting or designing the quenching circuitry, the technical
specifications for the digital output should be taken into account. These are:
The permissible overvoltage for the supply voltage (see Section 8.3
“Common Technical Specifications”)
Inductive breaking voltage of the output (see Section 8.4 “Description of
Individual Modules”)

Switching An external quenching circuit only provides thermal relief if its quenching
Frequency of the voltage is lower than the breaking voltage specified for the module, allowing
Output is Higher for unfavorable supply voltage conditions.
than the
Example: 453 digital output
Permissible Value
Inductive breaking voltage L+ - 47 V (tech. specifications)
Max. supply voltage L+ = 30 V
Quenching voltage referred to L- (0 V ground) is - 17 V
The quenching device must be rated at approximately 15 V and the switched
load current, e.g. 1 A.

Disconnecting the A quenching device rated for the induced breaking current must be provided
Load Circuit at the load (see Figure 8-14).
The quenching voltage at the load is independent of the module. The
quenching devices must also ensure that the overvoltages at the switch and in
the wiring do not exceed the disturbance voltage and voltage hazard limits
permissible to VDE/IEC.

Disconnecting the The following applies to digital outputs for DC voltage:

Supply Line L+ In general, load power supplies should be switched on the primary side to
and L utilize the low-resistance secondary winding and smoothing capacitors of the
power supply for energy compensation in the dropping of inductive loads.
The load power supply switch should only be considered as a circuit breaker.

Switched-Through With switched-through digital outputs and disconnection of the supply line
Outputs L+, the output current is maintained during the quenching time by capacitors
and the reverse voltage protection diode on the module. This severe electrical
stress of the module should be avoided during operations, because it can
result in a fault in the long term.

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8-26 C79000-G8576-C199-06
 Digital Input/Output Modules

Two-Wire Switches With two-wire switches and AC voltage outputs:

Disconnection of the supply voltage during operation is not permissible
without additional protective circuitry. Quenching of the inductive load is
achieved here via the load power supply unit or system. Since, as two-wire
switches, the outputs have no L-/N (0 V ground) terminal, the inductive load
cannot be quenched on the module when the supply line is disconnected.
With the 453 and 457 modules using two-wire switches, the overvoltages can
result in destruction of the module.
If the load voltage must be switched for safety reasons, you must provide
external quenching circuitry at each inductive load (see Figure 8-15).
Instead, with the 453 and 457 modules using two-wire switches, you can
insert a quenching device (diode) with adequate ratings after contact K from
the L+ line to L-.

DC Voltage AC Voltage
L+ L
Common Diode Contact, Switch
only on 453/457

Digital Output Digital Output

ELR ELR ELR

Contactor,
Solenoid Valve, etc.

L– N
Quenching Device
(Diode, Zener Diode, R/C Network or Varistor)

Figure 8-15 Quenching of Inductive Loads when Switching the Supply Line L+ and L

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C79000-G8576-C199-06 8-27
Digital Input/Output Modules

8.3 Common Technical Specifications

Important for the USA and Canada

The following approvals have been obtained for all the modules listed in this
chapter:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972
CSA Certification Mark
Canadian Standard Association (CSA) to
Standard C 22.2 No. 142, Report LR 63533

Valid safety specifications VDE 0160

Class of protection I
Degree of protection IP 20 to IEC 529/DIN 40050 when empty slots are covered
by dummy front plates
Climatic ambient conditions
Operation in equipment with fan 0 to 55 C
Operation in equipment without fan (module clear- 0 to 55 C
ance: 40 mm) Supply air measured at lower inlet of power supply; for a
cabinet assembly, note that the removable power dissipation
depends on the cabinet design, its ambient temperature and
arrangement of equipment.
Transportation and storage temperature –40 to 70 C
Temperature variation
in operation 10 K/h max.
transportation and storage 20 K/h max.
(When delivered under 0 oC, allow 3 h min. settling time on
account of possible condensation)
Relative humidity
in operation 95 % max. at 25 oC, no condensation
transportation and storage 95 % max. at 25 oC, no condensation
Site altitude
in operation –1000 m to +1500 m
transportation and storage –1000 m to +3500 m
Polluants
S02 0.5 ppm max. (rel. humidity under 60 %)
H2S 0.1 ppm max. (rel. humidity under 60 %)
Mechanical ambient conditions
Vibration in operation 10 to 58 Hz (const. amplitude 0.15 mm)
58 to 500 Hz (const. acceleration 2 g)
Mechanical requirements Installation in stationary equipment which is not free from
vibrations; installation on ships and vehicles, allowing for
special installation specifications, but not on the engine
Operand identifiers
for inputs I = Input
for outputs Q = Output
Parameters 0.0 to 255.7

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8-28 C79000-G8576-C199-06
 Digital Input/Output Modules

Terminals
Rated DC voltage of module L+
Reference potential for DC voltage L–
Rated AC voltage of module L
Reference potential for AC voltage N
Permissible line length for digital output modules Allow for the line resistance and tolerance of the supply
voltage for the relevant output current.
Enable inputs F+
F–
(Enable voltage according to the rated voltage of the mod-
ule)
Short-circuit signaling output (only when the short- H+
circuited output is at logic 1) (Supply for 1L+, referred to L- of the module)
Max. permissible supply voltage
for rated voltage 24 V DC (L+/L-) 1) 36 V DC for 100 ms
for rated voltage 60 V DC (L+/L-) 1) 90 V DC for 100 ms
for rated voltage 115 V/230 V AC (L/N) 276 V AC for 100 ms
Supply voltage ripple Vpp referred to rated DC vol-
tage 15 % max. 2)
Interference suppression at digital inputs v 1.5 ms 3)
Interference pulse length at digital outputs v 1.5 ms 3) 4)
Circuitry for inductive loads: Protective devices to limit the breaking voltage are provided
on the digital output modules. Additional protective cir-
cuitry for the load is only required in exceptional cases.
Exception: 458 digital output module
Switching of capacitive loads: 50 nF max. at full load
Safety tests
Surge voltage test to IEC 255-4 DC: Input/output to L-: Vp = 1 kV, 1.2/50 ms
AC: Input/output to L-: Vp = 2.5 kV, 1.2/50 ms
RFI test to IEC 255-4 DC: Input/output to L-: Vp = 1 kV, 1 MHz
AC: Input/output to L-: Vp = 2.5 kV, 1 MHz
Safety test for the -4UA13/-4UA14 modules
Immunity from conducted interference on signal 1 kV to IEC 801-4 (burst) for -4UA13 module
line 2 kV to IEC 801-4 (burst) for -4UA14 module
Immunity from discharge of static electricity 8 kV discharge in air to IEC 801-2, equivalent to 4 kV con-
tact discharge (see Chap. 3 and page 4-16)
6 kV contact discharge for -4UA14 module

1) Supply and signal voltages must be produced as functional voltage with safety separation.
2) The supply voltage range values are limit values. They include ripple.
3) If not otherwise specified
4) Must be bridged by the signal receiver

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C79000-G8576-C199-06 8-29
Digital Input/Output Modules

8.4 Specification Sheets for the Modules

The common technical specifications are given in Section 8.3.

8.4.1 6ES5 420-4UA13/4UA14 Digital Input Module

–4UA13 –4UA14

Rated input voltage 24 V DC

Number of inputs 32

Isolation no

Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V

Rated input current 8.5 mA

Input frequency 100 Hz max.

Delay time 3 ms typical (1.4 to 5 ms)

Input resistance 2.8 kilohms typical

Coincidence factor (total load capability) 100 %

Permissible line length 600 m max., unshielded;

1000 m max., shielded

Power supply

Digital section from system bus 5 V, 80 mA typical 5 V, 30 mA typical

Supply voltage for 2-wire BERO 22 to 33 V

Power dissipation (rated operation) 7.0 W

Enable input (F+/F–)

Rated input voltage 24 V DC

Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V

Rated input current 5 mA

Permissible line length 200 m max.

Mechanical specifications

Dimensions (W x H x D) 20 mm x 255 mm x 195 mm

Weight Approx. 0.4 kg

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8-30 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin
for an input:
x20
F+ (1) I 1.5
1 t 1)
2 2)

L+ 3 2)
1I0.0 4 g t Input 5 (5th bit);
1I0.1 5 g 0 to 7 possible
1I0.2 6 g t
1I0.3 7 g Address of input byte
1I0.4 8 g (1st byte);
1I0.5 9 g 0 to 255 possible
1I0.6 10 g
1I0.7 11 g t I = Input
12 2)
1I1.0 13 g t 1st group (not specified
1I1.1 14 g in the address)
1I1.2 15 g
1I1.3 16 g
1I1.4 17 g
1I1.5 18 g
Data Memory and S5 Bus Control

1I1.6 19 g
1I1.7 20 t
21 g 2)
22 2)
23 2)
24 2)
1I2.0 25 g t
1I2.1 26 g
1I2.2 27 g
1I2.3 28 g
1I2.4 29 g
1I2.5 30 g
1I2.6 31 g
1I2.7 32 g t
33 2)
1I3.0 34 g t
1I3.1 35 g
1I3.2 36 g
1I3.3 37 g
1I3.4 38 g
1I3.5 39 g
1I3.6 40 g
1I3.7 41 g t
42 M
ext. M
ext.
(L–)

g = Green LED (status indicator)

F+ = Enable input
Connect L- of the power supply unit to the reference potential (PE).
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. Even when this terminal is connected to input voltages, the clearances in air
and leakage paths remain adequate to UL, CSA and VDE.

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Digital Input/Output Modules

8.4.2 6ES5 430-4UA13/4UA14 Digital Input Module

–4UA13 –4UA14

Rated input voltage 24 V DC

Number of inputs 32
Isolation Yes, 1 group with 32 inputs
Input voltage
for logic 0 –3 to 7 V –33 to 7 V
for logic 1 1) 13 to 33 V 13 to 33 V
Rated input current 7.0 mA
Input frequency 100 Hz max.
Delay time 4 ms typical (2.5 to 6.5 ms) 3 ms typical (1.4 to 5.0 ms)
Input resistance 3.3 kilohms typical
Coincidence factor (total load capability) 100 %
Permissible line length 600 m max., unshielded;
1000 m max., shielded
Power supply
Digital section from system bus 5 V, 100 mA typical 5 V, 30 mA typical
Supply voltage for 2-wire BERO 22 to 33 V
Supply voltage L+/L– 24 V (20 to 30 V) L+ to terminal 3 not re-
quired
Current consumption from L+/L– Approx. 100 mA L+ not required
Power dissipation (rated operation) 8.3 W 5.6 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V
Rated input current 5 mA
Permissible line length 200 m max.
Voltage test to VDE 0160 Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.4 kg

1) Polarity reversal for up to 8 inputs per module is permissible.

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an input:
LED Pin
F+ x20
L+ 1 t (1) I 3.5
L– F– 2
1)

L+ 4) 3
L+
Input 5 (5th bit);
1I0.0 t L+
4 g 0 to 7 possible
1I0.1 5 g
1I0.2 6 g Address of input byte
1I0.3 7 g (3rd byte);
1I0.4 8 g 0 to 255 possible
1I0.5 9 g
1I0.6 10 I = Input
g
1I0.7 t
11 g
12 2)
1st group (not specified
1I1.0
13 g t in the address)
1I1.1
14 g
1I1.2
15 g
1I1.3
16 g
1I1.4
17 g Data Memory and S5 Bus Control
1I1.5
18 g
1I1.6
19 g
1I1.7 t
20
g
L– 21
22 2) L–
23 2)
24 2)
1I2.0 t
25 g
1I2.1
26 g
1I2.2
27 g
1I2.3
28 g
1I2.4
29 g
1I2.5
30 g
1I2.6
31 g
1I2.7
32 g t
33 2)
1I3.0 g t
34
1I3.1
35 g
1I3.2
36 g
1I3.3
37 g
1I3.4
38 g
1I3.5
Isolation

39 g
1I3.6
40 g
1I3.7 t
41 g
L– 42
3) L– Shield

g = Green LED (status indicator)

F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. Even when this terminal is connected to input voltages, the clearances in air and
leakage paths remain adequate to UL, CSA and VDE.
3) By connecting L- to pin 42, a leading and trailing connection to ground is established on the module when it is plugged in
and removed.
4) L+ to terminal 3 is not required for -4UA14.

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Digital Input/Output Modules

8.4.3 6ES5 431-4UA12 Digital Input Module

Rated input voltage 24 to 60 V DC

Number of inputs 16

Isolation Yes, 16 inputs

Input voltage
for logic 0 –33 to 8 V
for logic 1 13 to 72 V

Rated input current 4.5 to 7.5 mA (24 to 60 V DC)

Input frequency 100 Hz max.

Delay time 3 ms typical (1.4 to 5 ms)

Coincidence factor (total load capability) 100 %

Permissible line length 400 m max. unshielded;

1000 m max. shielded

Power supply

Digital section from system bus 5 V, 90 mA typical

Supply voltage for 2-wire BERO 22 to 72 V

Power dissipation (rated operation) 2.2 to 7.7 W (24 to 60 V)

Enable input (F+/F–)

Rated input voltage 24 to 60 V DC

Input voltage
for logic 0 –72 to 8 V
for logic 1 13 to 72 V

Rated input current 5 mA (at 48 V DC)

Permissible line length 200 m max.

Voltage test to VDE 0160 Between two groups: 1250 V AC

Between group and ground point: 1250 V AC

Mechanical specifications

Dimensions (W x H x D) 20 mm x 255 mm x 195 mm

Weight Approx. 0.4 kg

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an input:
LED Pin
L+ F+ x20
1 t (8) I 0.7
L– F– 1)
2
3 2) Input 7 (7th bit);
1L+ + 1I0.0 4 t
g 0 to 7 possible
1L– – 1I0.0 5
2L+ + 2I0.1 6 g
2L– – 2I0.1 7 Address of input byte
3L+ + 3I0.2 8 g
(byte 0);
3L– – 3I0.2 9 0 to 255 possible
4L+ + 4I0.3 10 g t
4L– – 4I0.3 I = Input
11
12 2)
5L+ + 5I0.4 t 8th group (not specified
13 g
5L– – 5l0.4
in the address)
14
6L+ + 6I0.5
15 g
6L– – 6I0.5
16
7L+ + 7I0.6
17 g
7L– – 7I0.6
Data Memory and S5 Bus Control

18
8L+ + 8I0.7
19 g t
8L– – 8I0.7
20
21 2)

22 3)
23 3)
24 2)
9L+ + 9I1.0
25 g t
9L– – 9I1.0
26
10L+ + 10I1.1
27 g
10L– –10I1.1
28
11L+ + 11I1.2
29 g
11L– –11I1.2
30
12L+ + 12I1.3
31 g t
12L– –12I1.3
32
33 2)
13L+ + 13I1.4 34 g t
13L– – 13I1.4 35
14L+ + 14I1.5
36 g
14L– – 14I1.5
37
15L+ + 15I1.6
38 g
15L– – 15I1.6
39
16L+ + 16I1.7 t
40 g
16L– – 16I1.7
41
42 2)
Shield

g = Green LED (status indicator)

F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the input voltages, the clearances in air and
leakage paths are no longer adequate to UL and CSA, but comply with VDE.
3) The terminal is not connected internally. When this terminal is connected to the input voltages, the clearances in the air and
leakage paths remain adequate to UL, CSA and VDE.

System Manual
C79000-G8576-C199-06 8-35
Digital Input/Output Modules

8.4.4 6ES5 432-4UA12 Digital Input Module

Rated input voltage 24 V DC

Number of inputs 32

Isolation Yes, 4 groups of 8 inputs

Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V

Rated input current 8.5 mA

Input frequency 100 Hz / 300 Hz / 1 kHz max.

Delay time 1) 3 ms / 1 ms / 0.3 ms typical

(1.5 to 4.8 ms/0.5 to 1.6 ms/0.15 to 0.48 ms)

Input resistance 2.8 kilohms typical

Coincidence factor (total load capability) 100 %

Permissible line length 600 m max. unshielded (3 ms);

200 m max. unshielded (1 ms);
50 m max. unshielded (0.3 ms)

Power supply

Digital section from system bus 5 V, 200 mA typical

Supply voltage for 2-wire BERO 22 to 33 V

Power dissipation (rated operation) 7.5 W

Enable input (F+/F–)

Rated input voltage 24 V DC

Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V

Rated input current 5 mA

Permissible line length 200 m max.

Voltage test to VDE 0160 Between two groups: 1250 V AC

Between group and ground point: 1250 V AC

Mechanical specifications

Dimensions (W x H x D) 20 mm x 255 mm x 195 mm

Weight Approx. 0.55 kg

1) Selectable in bytes with switch S5

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an input:
LED Pin
x20
L+ F+ t
1 (4) I 3.5
L– F– 1)
2
3 3)
1I0.0 t
Input 5 (5th bit);
1L+ 4 g
1I0.1 0 to 7 possible
5 g
1I0.2
6 g
1I0.3
7 g
Address of input byte
1I0.4
8 g
(3rd byte);
1I0.5
9 g 0 to 255 possible
1I0.6
10 g
1I0.7
g t I = Input
11
1L– 12
2L+
2I1.0
g t 4th group (not speci-
13
2I1.1
g
fied in the address)
14
2I1.2
15 g
2I1.3
16 g
2I1.4
17 g
2I1.5
18 g
Data Memory and S5 Bus Control

2I1.6
19 g
2I1.7
20 g t
2L– 21
22 3)
23 4)
24 3)
3I2.0 t
3L+ 25 g
3I2.1
26 g
3I2.2
27 g
3I2.3
28 g
3I2.4
29 g
3I2.5
30 g
3I2.6
31 g
3I2.7 t
32 g
3L– 33
4I3.0 t
4L+ 34 g
4I3.1
35 g
4I3.2
36 g
4I3.3
37 g
4I3.4
38 g
4I3.5
39 g
4I3.6
40 g
4I3.7
41 g t
4L– 42
Shield

g = Green LED (status indicator)

F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) Only 128 to 255 permissible with group signal and interrupt.
3) The terminal is not connected internally. When this terminal isconnected to the input voltages, the clearances in air and
leakage paths are no longer adequate to UL and CSA, but comply with VDE.
4) The terminal is not connected internally. When this terminal is connected to the input voltages, the clearances in air and
leakage paths remain adequate to UL, CSA and VDE.

System Manual
C79000-G8576-C199-06 8-37
Digital Input/Output Modules

Labeling for module cover:

Mark the switch settings in the free fields.

X3
Master (on)
Slave (off)

Delay-Time X4
Byte 3 ms 1 ms 0.3 ms S5 Group Signal
active (on)
3
inactive (off)

Edge Trigger S3
S1 Interrupt
3
IRA
IRB
2
IRC
IRD
1
IRE
IRF
0
IRG
Byte INT

Group Signal
Master submodule (Jumper X3 on) Slave submodule (Jumper X3 off)

Data- without 1 2 3 4 5 6 7 1.Slave 2.Slave 3.Slave 4.Slave 5.Slave 6.Slave 7.Slave

bit Slave Slave Slave Slave Slave Slave Slave Slave o.1 0.2 0.3 0.4 0.5 0.6 0.7
S2
0
1
2
3
4
5
6
7

System Manual
8-38 C79000-G8576-C199-06
 Digital Input/Output Modules

8.4.5 6ES5 434-4UA12 Digital Input Module

Rated input voltage (LH+) DC 5 to 15 V

Rated input voltage (L+) DC 12 to 24 V (NAMUR) 1)
Number of inputs 32
Isolation Yes, 1 group of 32 inputs
Input voltage TTL: for logic 0 0 to 0.8 V
for logic 1 2.4 to 5.0 V
CMOS: for logic 0 0 V to 0.3 x LH+
for logic 1 0.7 V x LH+ to 1 x LH+
Rated input current TTL: for logic 0 –1 mA
for logic 1 0.1 mA or open input
CMOS: for logic 0 –1 to –3 mA (5 to 15 V)
for logic 1 0.1 to 0.3 mA (5 to 15 V)
NAMUR: for logic 0 v 1.2 mA
for logic 1 w 2.1 mA
Internal resistance 1 kilohm typical
Line resistance 50 ohms max.
Input frequency 100 Hz max.
Delay time
for positive-going edge 3 ms typical (1.4 to 5 ms)
for negative-going edge 3 ms typical (1.4 to 5 ms)
Coincidence factor (total load capability) 100 %
Permissible line length TTL/CMOS 200 m max. unshielded
NAMUR 600 m max. unshielded
Power supply
Digital section from system bus 5 V, 80 mA typical
Supply voltage L+/L– 24 V (20 to 30 V)
Current consumption at L+/L– 100 mA each
Current consumption at LH+/LH– 150 mA each at 15 V input voltage
Current output from LH+/LH– 120 mA each at 8.5 V sensor supply (NAMUR) 2)
Power dissipation (rated operation) 5.5 W
Enable input (F+/F–)
Rated input voltage 5/ 15/ 24 V DC
Input voltage for logic 0 –15 to 2 V
for logic 1 4 to 33 V
Rated input current 5 mA
Permissible line length 100 m max.
Voltage test to VDE 0160 Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.45 kg
1) NAMUR = Sensor with current output to DIN 19234, Standards Committee for Measurement and Control.
However, the module is not intrinsically safe.
2) The current consumption from L+/L- increases accordingly.

System Manual
C79000-G8576-C199-06 8-39
Digital Input/Output Modules

Connection for supply voltage,

jumpers and sensor supply in groups of 2 bytes
(16 inputs each)

Byte 0 + 1 1L+ Terminal 3 1LH+ Terminal 12 1LH– Terminal 22

Byte
y 2+3 2L+ Terminal 24 2LH+ Terminal 33 2LH– Terminal 23

Type of
Sensor
NAMUR Connect to L+ Output for sensor Jumper to L–
(24 V supply) supply Terminal 21
CMOS open Connect to 5 to 15 V open
supply
TTL open Connect to 5 V supply open

The types of sensor can be arbitrarily mixed in groups of 16 inputs.

With CMOS TTL sensors, open inputs are at logic 1 (LED is lit).

System Manual
8-40 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of NAMUR Sensors Sensors with TTL- and/or

CMOS Outputs
Sensor Supply +/–
Sensor Supply LH+ TTL : LH+ = 5V
from L+ = 24V L– = 0V
CMOS : LH+ = 5...15V
L– = 0V
Connection of
Process Signal Connection of Front Strip Block Diagram of
Lines Process Signal Lines Module Inputs
LED Pin
L+ F+ LH+ F+ x20
1 1 t
L– F– L– F–
2 2 1)
L+ 1L+ 3
3
NAMUR 1I0.0 TTL/CMOS Q 1I0.0 t
4 +_ 4 g
. 1I0.1 1I0.1
5 . 5 g
. 1I0.2 1I0.2 6
6 . g
. 1I0.3 1I0.3 7
7 . g
. 1I0.4 1I0.4 8
8 . g
. 1I0.5 1I0.5 9
9 . g
. 1I0.6 1I0.6 10
10 . g
1I0.7 + Q 1I0.7 11 t
11 _ g
1LH+ LH+ Q 1LH+ 12
12
1I1.0 + 1I1.0 13 t
13 _ g
. 1I1.1 14 1I1.1 14
. g
. 1I1.2 15 1I1.2 15
. g
. 1I1.3 16 1I1.3 16
. g
. 1I1.4 1I1.4 17
17 . g

Data Memory and S5 Bus Control

. 1I1.5 1I1.5 18
18 . g
1I1.6 1I1.6 19
19 g
1I1.7 NAMUR– + Q 1I1.7 20
20 t
L– L–
21 L– _ L– 21
g
and
1LH– 22 22 L–
2LH– TIL/CMOS
23 23
L+ 2L+
24 Sensors 24
NAMUR 1I2.0 TTL/CMOS Q 1I2.0
25 +
_ 25 t
1I2.1 (can be 1I2.1 g
. 26 . 26
1I2.2 1I2.2 g
. 27 connected . 27
1I2.3 1I2.3 g
. 28 in groups of 16) . 28
1I2.4 1I2.4 g
. 29 . 29
1I2.5 1I2.5 g
. 30 . 30
1I2.6 1I2.6 g
. 31 . 31
1I2.7 + Q 1I2.7 g
32 _ 32 t
2LH+ g
2LH+ 33 LH+ 33
1I3.0 + Q 1I3.0 34
34 _ g t
. 1I3.1 1I3.1 35
35 . g
. 1I3.2 1I3.2 36
36 . g
1I3.3 1I3.3
Isolation

. 37 . 37
1I3.4 1I3.4 g
. 38 . 38
1I3.5 1I3.5 g
. 39 . 39
1I3.6 1I3.6 g
40 40
1I3.7 + Q 1I3.7 g
41 _ 41 t
g
L– 42 L– 42
L– Shield

Example of connection designation for an input:

g = Green LED (status indicator) (1) I 3.5 Input 5 (5th bit);
F+/F- = Enable input 0 to 7 possible
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive. Address of input byte
(1st byte);
0 to 255 possible
I = Input

1st group (not speci-

fied in the address)

System Manual
C79000-G8576-C199-06 8-41
Digital Input/Output Modules

8.4.6 6ES5 435-4UA12 Digital Input Module

Rated input voltage 24 to 60 V AC (47 to 63 Hz)

Number of inputs 16
Isolation Yes, 2 groups of 8 inputs
Input voltage
for logic 0 0 to 15 V AC
for logic 1 20 to 72 V AC
Rated input current
bei AC 48 V 15 mA typical
bei AC 60 V 20 mA typical
Input current for 2-wire BERO
for logic 0 v 5 mA
for logic 1 w 10 mA
Input frequency 20 Hz max. as pulse train
Delay time
for positive-going edge 5 ms typical (2 to 15 ms)
for negative-going edge 20 ms typical (10 to 25 ms)
Input resistance 3 kilohms typical
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 75 % at 60 V;
100 % at 35 o C;
100 % at 30 V
Permissible line length 600 m max. unshielded
1000 m max. shielded
Power supply
Digital section from system bus 5 V, 100 mA typical
Power dissipation (rated operation) 3.5 W at 24 V, 18.0 W at 60 V
Enable input (F+/F–) Jumper in front connector
Voltage test to VDE 0160 Between two groups: 2000 V AC;
Between group and ground point: 1500 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.55 kg

System Manual
8-42 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation for

Process Signal LED Pin Module Inputs
Lines an input:
F+ +5V
1 x20 (2) I 1.2
F– t
2 1)

1N 1N
4 Input 2 (2nd bit);
1I0.0 0 to 7 possible
6 g t

1I0.1 Address of input byte

8 g t
(1st byte);
1I0.2 0 to 255 possible
10 g t

1I0.3
I = Input
12 g t

1I0.4
2nd group (not specified
14 g t in the address)
1I0.5
16 g t

1I0.6
18 g t
Isolation

Data Memory and S5 Bus Control

1I0.7
20 g t

2N 2N
25
2L 2I1.0 t
27 g
2I1.1 t
29 g
2I1.2
31 g t

2I1.3 t
33 g

2I1.4 t
35 g
2I1.5
37 g t

2I1.6 t
Isolation

39 g
2I1.7 t
41 g

Shield

g = Green LED (status indicator)

F+/F- = Enable input (jumper in front connector)
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

System Manual
C79000-G8576-C199-06 8-43
Digital Input/Output Modules

8.4.7 6ES5 436-4UA12 Digital Input Module

Rated input voltage 115 to 230 V AC (47 to 63 Hz)

Number of inputs 16

Isolation Yes, 2 groups of 8 inputs

Input voltage
for logic 0 0 to 60 V AC
for logic 1 90 to 264 V AC

Rated input current

at 115 V AC 15 mA typical
at 230 V AC 25 mA typical
(2-wire-BERO can be connected)

Input frequency 20 Hz max. as pulse train

Delay time
for positive-going edge 5 ms typical (2 to 15 ms)
for negative-going edge 20 ms typical (10 to 25 ms)

Input resistance 10 kilohms typical

Coincidence factor (total load capability)

ventilated 100 %
not ventilated 75 % at 230 V AC;
100 % at 35 oC;
100 % at 115 V AC

Permissible line length 600 m max. unshielded

1000 m max. shielded

Power supply

Digital section from system bus 5 V, 100 mA typical

Power dissipation (rated operation) 3.5 W at 115 V, 17.0 W at 230 V

Enable input (F+/F–) Jumper in front connector

Voltage test to VDE 0160 Between two groups: 2000 V AC;

Between group and ground point: 1500 V AC

Mechanical specifications

Dimensions (W x H x D) 40 mm x 255 mm x 195 mm

Weight Approx. 0.55 kg

System Manual
8-44 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation for

Process Signal Module Inputs
Lines LED Pin an input:
F+ +5V (1) I 0.4
1 x20
F– 2 t 1)

1N 1N 4
Input 4 (4th bit);
0 to 7 possible
1L 1I0.0 6 g t
Address of input byte
1I0.1 8 g (byte 0);
t
0 to 255 possible
1I0.2 10 g t I = Input
1I0.3 12 g t 1st group (not speci-
fied in the address)
1I0.4 14 g t

1I0.5 16 g t

1I0.6 18 g t
Isolation

Data Memory and S5 Bus Control

1I0.7 20 g t

2N 2N 25

2L 2I1.0 27 g t

2I1.1 29 g t

2I1.2 31 g t

2I1.3 33 g t

2I1.4 35 g t

2I1.5 37 g t
Isolation

2I1.6 39 g t

2I1.7 41 g t

Shield

g = Green LED (status indicator)

F+/F- = Enable input (jumper in front connector)
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

System Manual
C79000-G8576-C199-06 8-45
Digital Input/Output Modules

8.4.8 6ES5 436-4UB12 Digital Input Module

Rated input voltage 115 to 230 V AC (47 to 63 Hz)

Number of inputs 8

Isolation Yes, 8 inputs

Input voltage
for logic 0 0 to 60 V AC
for logic 1 90 to 264 V AC

Rated input current

at 115 V AC 15 mA typical
at 230 V AC 25 mA typical
(2-wire-BERO can be connected)

Input frequency 20 Hz max. as pulse train

Delay time
for positive-going edge 5 ms typical (2 to 15 ms)
for negative-going edge 20 ms typical (10 to 25 ms)

Input resistance 10 kilohms typical

Coincidence factor (total load capability) 100 %

Permissible line length 600 m max. unshielded

1000 m max. shielded

Power supply

Digital section from system bus 5 V, 80 mA typical

Power dissipation (rated operation) 2.0 W at 115 V, 8.5 W at 230 V

Enable input (F+/F–) Jumper in front connector

Voltage test to VDE 0160 Between two groups: 2000 V AC;

Between group and ground point: 1500 V AC

Mechanical specifications

Dimensions (W x H x D) 40 mm x 255 mm x 195 mm

Weight Approx. 0.5 kg

System Manual
8-46 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation for

Process Signal Module Inputs
Lines LED Pin an input:
F+ +5V x20 (6) I 0.5
1
F– 2 t 1)

1N 1N 4 Input 5 (5th bit);

0 to 7 possible
1L 1I0.0 6 g t
Address of input byte
2N 2N 8 (byte 0);
0 to 255 possible
2L 2I0.1 10 g t
I = Input
3N 3N 12
6th group (not speci-
3L 3I0.2 g
fied in the address)
14 t

4N 4N 16

4L 4I0.3 Data Memory and S5 Bus Control

18 g t

20 2)

5N 5N 25

5L 5I0.4 27 g t

6N 6N 29

6L 6I0.5 31 g t

7N 7N 33

7L 7I0.6 35 g t

8N 8N 37

8L 8I0.7 39 g t

41 2)

Shield

g = Green LED (status indicator)

F+/F- = Enable input (jumper in front connector)
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to input voltages, the clearances in air and
leakage paths remain adequate to UL, CSA and VDE.

System Manual
C79000-G8576-C199-06 8-47
Digital Input/Output Modules

8.4.9 6ES5 441-4UA13/4UA14 Digital Output Module

–4UA13 –4UA14
Rated supply voltage L+ 24 V DC
Number of outputs 32, short-circuit protected 1)
Isolation no
Range for supply voltage 20 to 30 V DC
Fusing 6.3 A slow, 7 A, fast, 1 fuse per 8 out-
1 fuse per 8 outputs puts
Output voltage
for logic 1 L+ -1.5 V min.
for logic 0 3 V max.
Switching current (resistive, inductive load) 5 mA to 0.5 A
Residual current at logic 0 0.5 mA max.
Switching current for lamps 0.22 A max. (5 W)
Switching frequency
with resistive load 100 Hz max.
with inductive load 2 Hz max. at 0.3 A, 0.5 Hz max. at 0.5 A
Breaking voltage (inductive) Limited to L+ – 47 V Limited to L+ –55 V
Total switching current 4 A max. per 8 outputs
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 50 %; 100 % up to 35 oC
Permissible line length 400 m max. unshielded
Power supply
Digital section from system bus 5 V, 80 mA typical
Current consumption from L+/L– 24 V, 150 mA typical 24 V, 200 mA typical
Power dissipation (rated operation) 17.0 W 6.4 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage
for logic 1 13 to 33 V
for logic 0 – 33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Short-circuit monitoring
Indicator for signaling output (H+) Red LED for every 8 outputs
Output voltage
referred to L– (with feed at 1L+)
for logic 1 1L+ – 5 V min. 1L+ –1.5 V min.
for logic 0 3 V max. 3 V max.
Switching current 10 mA max., limited
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.45 kg
1) Short-circuit protection responds with line resistance v 15 ohms, irrelevant for the –4UA14 .

System Manual
8-48 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
L+ F+ x20
1 t
1)
(2) Q 2.6
2)
2 F2
L+ 1L+ F1
3 r
L– 1Q0.0 Output 6 (6th bit);
4 g
1Q0.1
5 g 0 to 7 possible
1Q0.2 g
6
1Q0.3
7 g Address of output byte
1Q0.4
8 g (2nd byte);
1Q0.5 g
0 to 255 possible
9
1Q0.6 g
10 Q = Output
1Q0.7 g
11
r 2)
12 2nd terminal L+ (not
1Q1.0 13 g specified in the ad-
1Q1.1 14 g dress)
1Q1.2 15 g
1Q1.3 16 g
1Q1.4 17 g
1Q1.5 g
18
Data Memory and S5 Bus Control

1Q1.6 g
19
1Q1.7
20
g 2)
21
H– H+ Short-
22 Circuit
23 2)
F4
L+ 2L+
24 r F3
2Q2.0 g
25
2Q2.1
26 g
2Q2.2
27 g
2Q2.3
28 g
2Q2.4
29 g
2Q2.5
30 g
2Q2.6
31 g
2Q2.7
32 g
r 2)
33
2Q3.0 34 g
2Q3.1 35 g
2Q3.2 36 g
2Q3.3 37 g
2Q3.4 g
38
2Q3.5 g
39
2Q3.6 g
40
2Q3.7 g
41
42 Mext.

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+ = Enable input, referred to 0 V ground
Connect L- of the power supply unit to the reference potential (PE).
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air
and leakage paths are no longer adequate to UL and CSA, but comply with VDE.

System Manual
C79000-G8576-C199-06 8-49
Digital Input/Output Modules

8.4.10 6ES5 451-4UA13/4UA14 Digital Output Module

–4UA13 –4UA14
Rated supply voltage L+ 24 V DC
Number of outputs 32, short-circuit protected 1)
Isolation Yes, 1 group of 32 outputs
Range for supply voltage 20 to 30 V DC
Fusing 6.3 A slow 7 A fast
1 fuse per 8 outputs 1 fuse per 8 outputs
Output voltage
for logic 1 L+ – 1,5 V min.
for logic 0 3 V max.
Switching current
(resistive, inductive load) 5 mA to 0.5 A
Residual current at logic 0 0.5 mA max.
Switching current for lamps 0.22 A max. (5 W)
Switching frequency
with resistive load 100 Hz max.
with inductive load 2 Hz max. at 0.3 A; 0.5 Hz max. at 0.5 A
Breaking voltage (inductive) Limited to L+ – 47 V Limited to L+ –55 V
Total switching current 4 A max. per 8 outputs
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 50 %; 100 % up to 35 oC
Permissible line length 400 m max. unshielded
Power supply
Digital section from system bus 5 V, 80 mA typical
Current consumption from L+/L– 24 V, 150 mA typical 24 V, 200 mA typical
Power dissipation (rated operation) 17.0 W 6.4 W
Enable input (F+/F–),
Rated input voltage 24 V DC
Input voltage
for logic 1 13 to 33 V
for logic 0 – 33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Short-circuit monitoring
Indicator for signaling output (H+) Red LED for every 8 outputs
Output voltage
referred to L– (with feed at 1L+)
for logic 1 1L+ – 5 V min. 1L+ –1,5 V min.
for logic 0 3 V max. 3 V max.
Switching current 10 mA max. limited
Voltage test to VDE 0160 Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.45 kg
1) Short-circuit protection responds with line resistance v 15 ohms, irrelevant for the –4UA14 .

System Manual
8-50 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
L+ F+ t x20
L– F–
1 (1) Q 1.6
2 1)
F2
L+ 1L+ r F1
3
1Q0.0 4 g Output 6 (6th bit);
1Q0.1 5 g 0 to 7 possible
1Q0.2 6 g
1Q0.3 7 g Address of output byte
1Q0.4 8 g (1st byte);
1Q0.5 9 g 0 to 255 possible
1Q0.6 10 g
1Q0.7 11 g Q = Output
2)
12 r
1Q1.0 13 g 1st terminal L+ (not
1Q1.1 14 g specified in the ad-
1Q1.2 15 g dress)
1Q1.3 16 g
1Q1.4 17 g
1Q1.5 18 g
1Q1.6 19 g Data Memory and S5 Bus Control
1Q1.7 20 g
L– L–
21
H– H+ 22 Short-
Circuit
23 2) F4
L+ 2L+ F3
24 r
2Q2.0 25 g
2Q2.1 26 g
2Q2.2 27 g
2Q2.3 28 g
2Q2.4 29 g
2Q2.5 30 g
2Q2.6 31 g
2Q2.7 32 g
2)
33 r
2Q3.0 34 g
2Q3.1 35 g
2Q3.2 36 g
Isolation

2Q3.3 37 g
2Q3.4 38 g
2Q3.5 39 g
2Q3.6 40 g
2Q3.7 41 g
L– L–
42
3) Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air
and leakage paths are no longer adequate to UL and CSA, but comply with VDE.
3) By connecting L- to pin 42, a leading and trailing connection to 0 V ground is created on the module when it is inserted
and removed.

System Manual
C79000-G8576-C199-06 8-51
Digital Input/Output Modules

8.4.11 6ES5 453-4UA12 Digital Output Module

Rated supply voltage L+ 24 V DC

Number of outputs (decoupled via diodes) 16, short-circuit protected 1)
Isolation Yes, 16 outputs
Range for supply voltage 20 to 30 V DC
Fusing 16 x 2.5 A, slow
Output voltage for logic 1: (L+)-Switch L+ – 2.5 V min.
(L–)-Switch 2.5 V max.
for logic 0: (L+)-Switch 3 V max.
(L–)-Switch L+ – 3 V min.
Switching current (resistive, inductive load) 10 mA to 2.0 A 2)
Residual current at logic 0 1 mA max.
Switching current for lamps 0.45 A max. (10 W)
Switching frequency with resistive load 100 Hz max.
with inductive load 0.2 Hz max. at 1 A; 0.1 Hz at 2 A
Breaking voltage (inductive) Limited to L+ – 47 V
Total switching current 4 A max. 8 outputs
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 25 %; 50 % to 20 oC
Permissible line length 400 m max., unshielded
Power supply
Digital section from system bus 5 V, 120 mA typical
Power dissipation (rated operation) 49.0 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage for logic 1 13 to 33 V
for logic 0 – 33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Short-circuit monitoring
Indicator for signaling output (H+, H–), floating Red LED for 16 outputs
Output voltage as L+ switch
for logic 1 L+ – 5 V min.
for logic 0 3 V max.
Switching current 10 mA max., short-circuit protected
Voltage test to VDE 0160 Between two groups: 1250 V AC
Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.6 kg
1) Short-circuit protection responds with line resistance v 3.6 ohms.
2) One digital input is permissible as minimum load.

System Manual
8-52 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
x20
L+ F+ t (7) Q 0.6
1 1)
L– F– 2
2)
3 r
F1 Output 6 (6th bit);
1L+ + 1Q0.0 4 g
1L– – 1Q0.0 0 to 7 possible
5
2L+ + 2Q0.1 6 g
2L– – 2Q0.1 7
Address of output byte
3L+ + 3Q0.2 8 g
(byte 0);
3L– – 3Q0.2 9
0 to 255 possible
4L+ + 4Q0.3 10 g
4L– – 4Q0.3 Q = Output
11
2)
12 7th terminal L+ (not
5L+ + 5Q0.4 F5
13 g specified in the ad-
5L– – 5Q0.4
14 dress)
6L+ + 6Q0.5 g
15
6L– – 6Q0.5
16
7L+ + 7Q0.6 g
17
7L– – 7Q0.6
18
8L+ + 8Q0.7 g
19
Data Memory and S5 Bus Control

8L– – 8Q0.7
20
2)
21
H + Short-circuit
22
H–
23
2)
24
9L+ + 9Q1.0 F9
25 g
9L– – 9Q1.0
26
10L+ + 10Q1.1 g
27
10L– – 10Q1.1
28
11L+ + 11Q1.2 g
29
11L– – 11Q1.2
30
12L+ + 12Q1.3
31 g
12L– – 12Q1.3
32 2)
33 F13
13L+ + 13Q1.4 g
34
13L– – 13Q1.4
35
14L+ + 14Q1.5 g
36
14L– – 14Q1.5
37
15L+ + 15Q1.6 g
38
15L– – 15Q1.6
39
16L+ + 16Q1.7 g
40
16L– – 16Q1.7
41
42 2)
Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air and
leakage paths are no longer adequate to UL and CSA, but comply with VDE.

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C79000-G8576-C199-06 8-53
Digital Input/Output Modules

8.4.12 6ES5 454-4UA13/4UA14 Digital Output Module

–4UA13 –4UA14
Rated supply voltage L+ 24 V DC
Number of outputs 16, short-circuit protected 1)
Isolation Yes, 1 group of 16 outputs
Range for supply voltage 20 to 30 V DC
Fusing 6.3 A, slow 7 A, fast
1 fuse per 4 outputs 1 fuse per 4 outputs
Output voltage for logic 1 L+ – 2 V min.
for logic 0 3 V max.
Switching current (resistive, inductive load) 10 mA to 2 A 2)
Residual current at logic 0 1 mA max.
Switching current for lamps 0.45 A max. (10 W)
Switching frequency with resistive load 100 Hz max.
with inductive load 0.2 Hz max. at 1 A; 0.1 Hz at 2 A
Breaking voltage (inductive) Limited to L+ – 47 V Limited to L+ –55 V
Total switching current 4 A max. per 4 outputs
Coincidence factor (total load capability) 50 %
Permissible line length 400 m max., unshielded
Power supply
Digital section from system bus 5 V, 100 mA typical
Current consumption from L+/L– 24 V, 100 mA typical 24 V, 120 mA typical
Power dissipation (rated operation) 17.5 W 10 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage for logic 1 13 to 33 V
for logic 0 – 33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Short-circuit monitoring
Indicator for signaling output (H+) Red LED for 4 outputs
Output voltage , referred to L–
(with feed at 1L+) for logic 1 1L+ – 5 V min. 1L+ –1,5 V min.
for logic 0 3 V max.
Switching current 10 mA max., limited
Voltage test to VDE 0160 Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm 20 mm x 255 mm x 195 mm
Weight Approx. 0.55 kg
1) Short-circuit protection responds with line resistance v 4,75 ohmd, irrelevant for the –4UA14.
2) One digital input is permissible as minimum load.

System Manual
8-54 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin
for an output:
x20
L+ F+ t
1 1) (4) Q 1.6
L– F–
2
L+ 1L+ F1
3 r
1Q0.0 4 g Output 6 (6th bit);
5 2)
0 to 7 possible
1Q0.1 6 g
7 2) Address of output byte
1Q0.2 8 g (1st byte);
9 2) 0 to 255 possible
1Q0.3 10 g
Q = Output
11 2)
12 r 2) 4th terminal L+ (not
2Q0.4 13 g specified in the ad-
14 2) dress)
2Q0.5 g
15
16 2)
2Q0.6 g
17
18 2) Data Memory and S5 Bus Control
2Q0.7
19 g
L+ 2L+ F2
20
L– Short-
21 Circuit
H– H+
22
23 2)
L+ 3L+ F3
24 r
3Q1.0
25 g
26 2)
3Q1.1
27 g
28 2)
3Q1.2
29 g
30 2)
3Q1.3
31 g
32 2)
33 r 2)
4Q1.4 34 g
35 2)
4Q1.5 g
36
37 2)
4Q1.6
38 g
2)
Isolation

39
4Q1.7
40 g
L+ 4L+ F4
41
L– L–
42
Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F- = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air and
leakage paths are no longer adequate to UL and CSA, but comply with VDE.

System Manual
C79000-G8576-C199-06 8-55
Digital Input/Output Modules

8.4.13 6ES5 455-4UA12 Digital Output Module

Rated supply voltage L 24 to 60 V AC (47 to 63 Hz)

Number of outputs 16, conditional short-circuit protection 1)
Isolation Yes, 2 groups of per 8 outputs
Range for supply voltage 20 to 72 V AC
Fusing 6.3 A, fast; 1 fuse per 4 outputs
Output voltage
for logic 1 L– 1.5 V min.
for logic 0 7.5 V max.
Residual current at logic 0 5 mA max.
Switching current (resistive, inductive load)
ventilated 40 mA to 2 A; 6 A max. per 4 outputs
not ventilated 40 mA to 1 A; 4 A max. per 4 outputs
Switching current for lamps
ventilated 40 mA to 2 A; 2.5 A max. per 4 outputs
not ventilated 40 mA to 1 A; 2.5 A max. per 4 outputs
Max. inrush current for
≤ 3 ms 25 A/group
≤ 20 ms 15 A/group
≤ 50 ms 13 A/group
Permissible line length 300 m max. unshielded
Power supply
Digital section from system bus 5 V, 100 mA typical
Power dissipation (rated operation) 39.0 W
Enable input (F+/F–) Jumper in front connector
Voltage test to VDE 0160 Between two groups: 2000 V AC
Between group and ground point: 1500 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.7 kg
1) Protected by a fuse.

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an output:
LED Pin
F+ 1 +5V x20 (2) Q 1.2
F– 2 t 1)
r F2 Output 2 (2nd bit);
1L 1L r
4 F1 0 to 7 possible
1N 1Q0.0 6 g Address of output byte
(1st byte);
1Q0.1 8 g 0 to 255 possible
1Q0.2 10 g Q = Output
1Q0.3 2nd terminal L+ (not
12 g
specified in the ad-
1Q0.4 g dress)
14

1Q0.5 g
16

1Q0.6
18 g
Data Memory and S5 Bus Control
Isolation

1Q0.7
20 g

r
F4
2L 2L F3
25 r

2N 2Q1.0
27 g

2Q1.1
29 g

2Q1.2
31 g
2Q1.3
33 g

2Q1.4 35 g

2Q1.5 g
37

2Q1.6
39 g
Isolation

2Q1.7
41 g

Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F– = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

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Digital Input/Output Modules

8.4.14 6ES5 456-4UA12 Digital Output Module

Rated supply voltage L 115 to 230 V AC (47 to 63 Hz)

Number of outputs 16, conditional short-circuit protection 1)
Isolation Yes, 2 groups of 8 outputs
Range for supply voltage 88 to 264 V AC
Fusing 6.3 A fast; 1 fuse per 4 outputs
Output voltage
for logic 1 L– 1.5 V min.
for logic 0 30 V max.
Residual current at logic 0 5 mA max.
Switching current (resistive, inductive load)
ventilated 40 mA to 2 A; 2) 6 A max. per 4 outputs
not ventilated 40 mA to 1 A; 2) 4 A max. per 4 outputs
Switching current for lamps
ventilated 40 mA to 2 A; 2.5 A max. per 4 outputs
not ventilated 40 mA to 1 A; 2.5 A max. per 4 outputs
Contactor size
per fuse group 0 (Type 3TB40) to 14 (Type 3TB58) at 230 V AC;
00 (Type 3TJ ..) to 10 (Type 3TB54) at 115 V AC;

for all outputs 0 (Type 3TB40) to 8 (Type 3TB52) at 230 V AC;

00 (Type 3TJ ..) to 4 (Type 3TB48) at 115 V AC;
Max. inrush current for
≤ 3 ms 25 A/group
≤ 20 ms 15 A/group
≤ 50 ms 13 A/group
Permissible line length 300 m max. unshielded
Power supply
Digital section from system bus 5 V, 100 mA typical
Power dissipation (rated operation) 39.0 W
Enable input (F+/F–) Jumper in front connector
Voltage test to VDE 0160 Between two groups: 2000 V AC
Between group and ground point: 1500 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.7 kg
1) Protected by a fuse
2) Contactors of Series 3TJ can only be operated at 115 V AC.

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8-58 C79000-G8576-C199-06
 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
F+ 1 +5V x20 (2) Q 1.6
F– 2 t 1)
r F2
1L 1L 4 r F1
Output 6 (6th bit);
0 to 7 possible
1N 1Q0.0 6 g
Address of output byte
1Q0.1 8 g (1st byte);
0 to 255 possible
1Q0.2 10 g
Q = Output
1Q0.3 12 g
2nd terminal L+ (not
1Q0.4 14 g specified in the ad-
dress)
1Q0.5 16 g

1Q0.6 18 g
Isolation

Data Memory and S5 Bus Control

1Q0.7 20 g

r F4
2L 2L 25 r F3

2N 2Q1.0 27 g

2Q1.1 29 g

2Q1.2 31 g

2Q1.3 33 g

2Q1.4 35 g

2Q1.5 37 g

2Q1.6 39 g
Isolation

2Q1.7 41 g

Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F– = Enable input
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

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Digital Input/Output Modules

8.4.15 6ES5 456-4UB12 Digital Output Module

Rated supply voltage L 115 to 230 V AC (47 to 63 Hz)

Number of outputs 8, conditional short-circuit protection 1)
Isolation Yes, 8 outputs
Range for supply voltage 88 to 264 V AC
Fusing 3.5 A fast; 1 fuse per output
Output voltage
for logic 1 L– 1.5 V min.
for logic 0 30 V max.
Residual current at logic 0 5 mA max.
Switching current (resistive, inductive load)
ventilated 40 mA to 2 A; 2)
not ventilated 40 mA to 1 A; 2)
Switching current for lamps
ventilated 40 mA to 2 A;
not ventilated 40 mA to 1 A;
Contactor size 0 (Type 3TB40) to 14 (Type 3TB58) at 230 V AC;
00 (Type 3TJ ..) to 8 (Type 3TB52) at 115 V AC;
Max. inrush current for
≤ 3 ms 16 A
≤ 20 ms 8A
≤ 50 ms 6.5 A
Switching capacity per module
for UL 1440 VA max.
for CSA 2000 VA max.
Permissible line length 300 m max. unshielded
Power supply
Digital section from system bus 5 V, 100 mA typical
Power dissipation (rated operation) 18.0 W
Enable input (F+/F–) Jumper in front connector
Voltage test to VDE 0160 Between two groups: 2000 V AC
Between group and ground point: 1500 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.6 kg
1) Protected by a fuse.
2) Contactors of Series 3TJ can only be operated at 115 V AC.

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an output:
LED Pin
F+ +5V x20
1 (3) Q 0.2
F– 2 t 1)

1L 1L F1 Output 2 (2nd bit);

4 r 0 to 7 possible
1N 1Q0.0 6 g
Address of output byte
2L 2L 8
(byte 0);
r
0 to 255 possible
2N 2Q0.1 10 g Q = Output
3L 3L
12 r 3rd terminal L+ (not
specified in the ad-
3N 3Q0.2
14 g dress)
4L 4L
16 r

4N 4Q0.3
18 g
Data Memory and S5 Bus Control

20 2)

5L 5L F5
25
r
5N 5Q0.4
27 g

6L 6L
29
r
6N 6Q0.5
31 g

7L 7L
33
r
7N 7Q0.6
35 g

8L 8L F8
37
r
8N 8Q0.7
39 g

41 2)

Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+/F– = Enable input (jumper in front connector)
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. If this terminal is connected to the output voltage, the clearances in air and
leakage paths remain adequate to UL, CSA and VDE.

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Digital Input/Output Modules

8.4.16 6ES5 457-4UA12 Digital Output Module

Rated supply voltage L+ 24 to 60 V DC

Number of outputs (decoupled via diodes) 16, short-circuit protected 1)
Isolation Yes, 16 outputs
Range for supply voltage 20 to 72 V DC
Fusing 16 x 1 A, slow
Output voltage for logic 1: (L+)-Switch L+ – 2.5 V min.
(L–)-Switch 2.5 V max.
for logic 0: (L+)-Switch 3 V max.
(L–)-Switch L+ – 3 V min.
Switching current (resistive, inductive load) 5 mA to 0.5 A 2)
Residual current at logic 0 1 mA max.
Switching current for lamps 0.22 A max. (5 W)
Switching frequency with resistive load 100 Hz max.
with inductive load 2 Hz max. at 0.5 A
Breaking voltage (inductive) Limited to L+ – 75 V 3)
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 50 %; 100 % up to 35 oC
Permissible line length 400 m max. unshielded
Power supply
Digital section from system bus 5 V, 120 mA typical
Power dissipation (rated operation) 13.0 W
Enable input (F+/F–)
Rated input voltage 24 to 60 V DC
Input voltage for logic 1 13 to 72 V
for logic 0 – 72 to 8 V
Rated input current at 24 V DC 2.5 mA
at 48 V DC 5 mA
at 60 V DC 6.5 mA
Permissible line length 200 m max.
Short-circuit monitoring
Indicator for signaling output (H+, H–) Red LED for 16 outputs
Output voltage as L+ switch
for logic 1 L+ – 5 V min.
for logic 0 3 V max.
Switching current 10 mA max., short-circuit protected
Voltage test to VDE 0160 Between two groups: 1250 V AC;
Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 40 mm x 255 mm x 195 mm
Weight Approx. 0.6 kg
1) Short-circuit protection responds with line resistance 9 ohms at 24 V DC, 30 ohms at 60 V DC.
2) One digital input is permissible as minimum load.
3) At L+ voltages of more than 72 V, the logic 0 of the output can rise to 13 V. A digital input follower will interpret this signal
as a logic 1 (possible fault).

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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
x20
L+ F+
1 t (7) Q 0.6
L– F– 1)
2
3 r 2)
1L+ + 1Q0.0 F1 Output 6 (6th bit);
4 g
1L– – 1Q0.0
0 to 7 possible
5
2L+ + 2Q0.1 g
6
2L– – 2Q0.1 Address of output byte
7
3L+ + 3Q0.2 (byte 0);
8 g
3L– – 3Q0.2 0 to 255 possible
9
4L+ + 4Q0.3 g
10 Q = Output
4L– – 4Q0.3
11
12 2) 7th terminal L+ (not
5L+ + 5Q0.4 F5
13 g specified in the ad-
5L– – 5Q0.4
14 dress)
6L+ + 6Q0.5
15 g
6L– – 6Q0.5
16
7L+ + 7Q0.6
17 g
7L– – 7Q0.6
18
Data Memory and S5 Bus Control
8L+ + 8Q0.7
19 g
8L– – 8Q0.7
20
21 2)
H+ Short-Circuit
22
H–
23
24 2)
9L+ + 9Q1.0 F9
25 g
9L– – 9Q1.0
26
10L+ + 10Q1.1
27 g
10L– – 10Q1.1
28
11L+ + 11Q1.2
29 g
11L– – 11Q1.2
30
12L+ + 12Q1.3
31 g
12L– – 12Q1.3
32
33 2)
13L+ + 13Q1.4 F13
34 g
13L– – 13Q1.4
35
14L+ + 14Q1.5
36 g
14L– – 14Q1.5
37
15L+ + 15Q1.6
38 g
15L– – 15Q1.6
39
16L+ + 16Q1.7
40 g
16L– – 16Q1.7
41
42 2)
Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+ = Enable input)
1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air
and leakage paths are no longer adequate to UL and CSA, but comply with VDE.

System Manual
C79000-G8576-C199-06 8-63
Digital Input/Output Modules

8.4.17 6ES5 458-4UA12 Digital Output Module

Rated supply voltage L 24 V DC

Number of outputs 16
Isolation Yes, 16 outputs
Range for supply voltage 20 to 30 V DC
Fusing 16 x 1 A, slow 1)
Output Relay contacts
Service life of contacts 108 cycles
Switching capacity with resistive load
with RC element module 60 V DC/48 V AC, 0.5 A 2)
without RC element module 60 V DC/48 V AC, 70 mA
Switching current with inductive load
with RC element module and external 0.5 A max.
suppressor circuit
Switching current for lamps 0.1 A max. with RC element module
Switching frequency with resistive load 100 Hz max. (pick-up 1 ms, drop-out 1 ms)
with inductive load 10 Hz max. up to 50 mA,
2 Hz max. up to 0.3 A,
0.5 Hz max. up to 0.5 A
Coincidence factor (total load capability) 100 %
Permissible line length 400 m max., unshielded
Power supply
Digital section from system bus 5 V, 80 mA typical
Current consumption from L+/L– 200 mA typical
Power dissipation (rated operation) 5.2 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage
for logic 1 13 to 33 V
for logic 0 –33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Voltage test to VDE 0160 Between two groups: 500 V AC
Between group and ground point: AC 500 V
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.45 kg
1) The fuse does not protect the contacts. The relay must be replaced after an overload.
2) 50 V/0.5 A max. resistive load for UL

System Manual
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 Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines LED Pin for an output:
L+ F+
1 (7) Q 0.6
L– F– 2
t x35
L+ L+ 3 F1 1)
+ 498
1L 1Q0.0 4 g F2 Output 6 (6th bit);
– 1Q0.0
1L 5 0 to 7 possible
2L + 2Q0.1 6 g
2L – 2Q0.1 7
+ 3Q0.2 8
Address of output byte
3L g (byte 0);
3L – 3Q0.2
9 0 to 255 possible
4L + 4Q0.3 10
g
4L – 4Q0.3
11 Q = Output
2)
12
+ 5Q0.4 F6
5L 13 g
498
7th terminal L+ (not
–
5L 5Q0.4 14 specified in the ad-
+ 6Q0.5
6L 15 g dress)
6L – 6Q0.5
16
7L +
7Q0.6 17 g
7L –
7Q0.6 18
8L +
Data Memory and S5 Bus Control
8Q0.7 19 g
8L – 8Q0.7
20
L– L–
21
22 2)

23 3)
2)
24
9L + 9Q1.0 25 F10 498
g
– 9Q1.0 498
9L 26 F
10L + 10Q1.1
27 g
10L – 10Q1.1
28
11L + 11Q1.2
29 g R
11L – 11Q1.2 47R
30
12L + 12Q1.3
31 g C
12L – 12Q1.3 47NF
32
2)
33
+ 13Q1.4 F14 498
13L 34 g
13L – 13Q1.4 4x
35
14L +
14Q1.5 36 g
14L – 14Q1.5
37
15L +
15Q1.6 38 g
15L – 15Q1.6
39
Isolation

16L +
16Q1.7 40 g
16L –
16Q1.7 41
42 2)

Shield

g = Green LED (status indicator)

r = Red LED (short-circuit indicator)
F+ = Enable input
1) Changeover of enable mode with jumper X35:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2) The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air and
leakage paths are no longer adequate to UL and CSA, but comply with VDE.
3) The terminal is not connected internally. If this terminal isconnected to the output voltages, the clearances in air and
leakage paths remain adequate to UL, CSA and VDE.

System Manual
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Digital Input/Output Modules

External Suppressor
Circuitry for
Inductive Load

Front Strip RC Element Module

498 498-1AB11
For DC Voltage: Load
L+
Current Sinking 60V DC max.
L– Diodew100V,1A

L+
Diodew100V,1A
Switching to P 60 V DC max.

L–
Load

L
Z. Diode 82V, 5W
For AC Voltage: 48 Vms max.
N
Load

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 Digital Input/Output Modules

8.4.18 6ES5 458-4UC11 Digital Output Module

Rated supply voltage L 24 V DC (pins 22, 23)

Number of outputs 16
Isolation Yes, 2 groups of 8 outputs
Range for supply voltage of the relays 20 to 30 V DC
Ausgang Relay contacts
Service life of contacts Approx. 105 cycles at 230 V AC/5A
Approx. 107 cycles mechanical
Switching capacity of the contacts
with resistive load 5.0 A at 250 V AC
5.0 A at 30 V DC
0.3 A at 115 V DC

with inductive load 1.5 A at 250 V AC

1.0 A at 30 V DC
0.08 A at 115 V DC
Max. rating per group P0/P1 8.0 A
Switching frequency
with resistive load 10 Hz max.
with inductive load 2 Hz max.
Permissible line length 400 m max., unshielded
Power supply
Digital section from system bus 5 V, 120 mA typical (all outputs active)
Current consumption from L+/L– 250 mA typical (all outputs active)
Power dissipation (rated operation) 6.6 W
Enable input (F+/F–)
Rated input voltage 24 V DC
Input voltage
for logic 1 13 to 33 V
for logic 0 –33 to 5 V
Rated input current 5 mA
Permissible line length 200 m max.
Voltage test to VDE 0160 Between two groups: 2000 V AC
Between group and ground point: 1500 V AC
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.7 kg

System Manual
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Digital Input/Output Modules

Connection of Front Strip Block Diagram of Example of connection designation

Process Signal Module Inputs
Lines for an output:
LED Pin
3 2 1
(2) Q 1.6
L+ F+ 1 x2
t
L– F– 2 1)
Output 6 (6th bit);
P0
4 0 to 7 possible
M0
1Q0.0 6 g Address of output
byte (1st byte);
1Q0.1 8 g 0 to 255 possible
1Q0.2 10 g Q = Output
1Q0.3 12 g 2nd terminal L+ (not
specified in the ad-
1Q0.4 14 g
dress)
1Q0.5 16 g

1Q0.6 18 g

Data Memory and S5 Bus Control

1Q0.7 20 g

L+
L+ 22
L–
L– 23 F1

P1
25

2Q1.0 27 g
M1

2Q1.1 29 g

2Q1.2 31 g

2Q1.3 33 g

2Q1.4 35 g

2Q1.5 37 g

2Q1.6 39 g
Isolation

2Q1.7 41 g

Shield

g = Green LED (status indicator)

F+/F- = Enable input
P0/M0 = Group of 8/load supply voltage (1st group)
P1/M1 = Group of 8/load supply voltage (2nd group)
L+/L- = Relay supply voltage (24 V DC)
1) Changeover of enable mode with jumper X2: 1 - 2
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

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 Digital Input/Output Modules

8.4.19 6ES5 482-4UA11 Digital Input/Output Module

Rated supply voltage L+ 24 V DC
Rated input voltage 24 V DC
Inputs
Number of inputs 16 min., 24 max.
Isolation Yes, 1 group of 32 inputs/outputs
Input voltage
for logic 0 –33 to 5 V
for logic 1 13 to 33 V
Rated input current 8.5 mA typical
Delay time 0.3 ms typical
Input resistance 2.8 kilohms typical
Coincidence factor (total load capability) 100 %
Permissible line length 50 m max.
Supply voltage for 2-wire BERO 22 V to 33 V
Power supply
Digital section from system bus 5 V, 80 mA typical
Outputs
Number of outputs 8 min., 16 max., short-circuit protected 1)
Isolation Yes
Fusing 6.3 A slow;
1 fuse per 8 outputs
Output voltage
for logic 1 L+ – 1.5 V min.
for logic 0 3 V max.
Switching current
(resistive, inductive load) 5 mA to 0.5 A
Switching frequency
with resistive load 120 Hz max.
with inductive load 2 Hz max. at 0.3 A; 0.5 Hz max. at 0.5 A
Breaking voltage (inductive) Limited to L+ and – 27 V
Total switching current 4 A max. per 8 outputs
Coincidence factor (total load capability)
ventilated 100 %
not ventilated 50 %; 100 % up to 35 oC
Permissible line length 400 m max.
Current consumption from L+/L– 24 V, 150 mA typical
Short-circuit monitoring
Indicator for signaling output (H+) Red LED for every 8 outputs
Output voltage referred to L– (with feed at 1L+)
for logic 1 1L+ – 5 V min.
for logic 0 3 V max.
Switching current 10 mA max. current limiting
Enable input (F+/F–) Jumper in front connector
Voltage test to VDE 0160 Between group and ground point: 1250 V AC
Mechanical specifications
Dimensions (W x H x D) 20 mm x 255 mm x 195 mm
Weight Approx. 0.4 kg
1) Short-circuit protection responds at line resistance v 15 ohms

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Digital Input/Output Modules

Connection of Process Signal Lines

Pin
x20
F+
1 1)
F–
2
L+ L+
3
1Q0.0
4
1Q0.1
5
1Q0.2
6
1Q0.3 Example of connection designation
7
1Q0.4
8 for an output:
1Q0.5
9
1Q0.6
10 (1) Q 1.6
1Q0.7 11
SYNIN 12
1Q1.0 13 Output 6 (6th bit);
1Q1.1 14 0 to 7 possible
1Q1.2 15
1Q1.3 16 Address of output byte
1Q1.4 17
(1st byte);
1Q1.5 18
19
0 to 255 possible
1Q1.6
1Q1.7 20
L– L– 21
Q = Output
H+ 22
23
1st terminal L+ (not
24 specified in the ad-
1I2.0 25 dress)
1I2.1 26
1I2.2 27
1I2.3 28
1I2.4 29
1I2.5 30
1I2.6 31
1I2.7 32
L– SYNOUT 33
1I3.0 34
1I3.1 35
1I3.2 36
1I3.3 37
1I3.4 38
1I3.5 39
1I3.6 40
1I3.7 41
42

SYSNIN, SYNOUT only relevant for operation with the IP 257

F+/F- = Enable input

1) Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.

Switch S2 must be at setting 1.

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Analog Input/Output Modules 9
Described in this chapter are the installation, wiring and operation of analog
input modules and analog output modules. The individual modules have
special features. These are discussed in separate sections.

Chapter Section Description Page

Overview 9.1 Technical Description 9-2
9.2 Common Technical Specifications 9-3
9.3 The 460 Analog Input Module 9-4
9.4 The 463 Analog Input Module 9-35
9.5 The 465 Analog Input Module 9-50
9.6 The 466 Analog Input Module 9-77
9.7 The 470 Analog Output Module 9-98

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Analog Input/Output Modules

9.1 Technical Description

The description below applies to the following modules:

Analog Input Modules and Cards

Order No. of the No. of Isolation/Groups Range Card (4 Channels) Order No. of the
Module Inputs Range Card
6ES5 460-4UA13 8 Yes/8 inputs isolated from $12.5/50/500 mV/Pt 100 6ES5 498-1AA11
0 V and from each other
$ 50/500 mV/Pt 100
6ES5 465-4UA12 16/8 No/none $1V 6ES5 498-1AA11
$10 V 6ES5 498-1AA21
$20 mA 6ES5 498-1AA31
4 to 20 mA/4-wire trans. 6ES5 498-1AA41
$5 V 6ES5 498-1AA51
4 to 20 mA/4-wire trans. 6ES5 498-1AA61
6ES5 498-1AA71
Analog Input Modules
Order No. of the No. of Isolation/Groups Measuring Range
Module Inputs
6ES5 463-4UA12 4 Yes/4 inputs isolated from 1 V, 10 V, 20 mA,
6ES5 463-4UB12, 0 V and from each other 4 to 20 mA

Yes
6ES5 466-3LA11 16/8 1.25 V, 2.5 V, 5 V, 10 V
20 mA, 4 to 20 mA
Analog Output Modules
Order No. of the No. of Isolation/Groups Output Range
Module Inputs
6ES5 470-4UA12 8 Yes/8 outputs from 0 V $10 V/0 to 20 mA

6ES5 470-4UB12 8 Yes/8 outputs from 0 V $10 V

6ES5 470-4UC12 8 Yes/8 outputs from 0 V $1 to 5 V/4 to 20 mA

I/O Modules Analog input and analog output modules are I/O modules for the input/output
of widely differing, analog process signals for the S5-135U/155U
programmable (logic) controller.
These I/O modules allow the creation of control systems which require the
processing of analog measured variables or continuous input to actuators.

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 Analog Input/Output Modules

9.2 Common Technical Specifications

Important for the USA and Canada

The following approvals have been issued:
UL Listing Mark
Underwriters Laboratories (UL) to Standard UL 508, Report E 85972 and
E116536 for the 466-7LA11 analog input module
CSA Certification Mark
Mark Canadian Standard Association (CSA) to Standard C 22.2 No. 142,
Report LR 63533C and LR 48323 for the 466-7LA11 analog input
module

Address range 128 to 255 (0 to 255)

Supply voltage L+
rated value 24 V
ripple Vpp 3.6 V
permissible range (including ripple) 20 to 30 V
reference potential L–= Mext = 0 V
Voltage for the isolated enable inputs (only required when enable F+ = + 24 V
jumper is inserted) F– = 0 V

Line lengths for

Analog input modules with rated input range of 50 m max. for shielded cables laid separately
$ 12.5 m, $ 50 mV and Pt 100 from power system cables (see Chapter 3)
Analog input modules with rated input range of $ 500 mV / 200 m max., shielded
$ 1 / $ 5 / $ 10 V / $ 20 mA, 4 to 20 mA and Pt 100
Analog output modules 200 m max., shielded
Temperature range
in operation 0 to 55 oC
for storage ans transportation – 40 to 70 oC
Relative humidity 95 % max. at 25 oC, no condensation
Site altitude 3500 m max. above sea level
Dimensions (W x H x D) 20 x 255 x 195 mm
Weight Approx. 0.4 kg

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Analog Input/Output Modules

9.3 The 460 Analog Input Module

9.3.1 Design

The modules are designed as plug-in PCBs for central controllers and
expansion units with a backplane connector and with a blade connector to
accept a plug-in front connector. You can directly connect the process signal
lines to the front connector, which is available separately, with screw or
crimp terminals.

Addressing Situated on each module is an addressing switch with six rockers to set the
Switch, Mode module address. Analog input modules also have two switches on the side
Switches with eight rockers for setting the mode, and receptacles for range cards.
The modules are protected by covers on both sides.

Addressing Switch

Blade Connector

Front Connector

Mode Switches

Range Cards
Figure 9-1 Analog Input Module

9.3.2 Function of the Enable Input

The 460 module has an enable circuit. You can use the enable inputs to
switch off individual modules whilst the PLC is in operation. This means
that:
The module can no longer be addressed by the user program.
Modules which are switched off can be removed or inserted during operation.
If this is not necessary, operate the module with the enable input switched
off.

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 Analog Input/Output Modules

Enable Input The enable circuit requires an external 24 V voltage at enable inputs F+/F- in
the front connector. If there is no voltage at F+/F-, the modules will not
acknowledge.
When the front connector is swivelled away from the front strip of the
module, the supply of power to the enable input is interrupted, i.e. the
module is switched off and can no longer be addressed by the user program: a
timeout (QVZ) occurs in the CC.

Switching Off the The 460 module additionally offers the facility for changing the enable
Enable Input mode. The module has a jumper accessible from above in the vicinity of the
addressing switch.
When the enable jumper is inserted, you can define the behaviour of the 460
analog input module as follows:
When the enable voltage and load voltage are obtained from the same
load supply, a shutdown of the 24 V load voltage will result in a timeout.
When the enable voltage and load voltage are obtained from different
load supplies, a shutdown of the 24 V load voltage will not result in a
timeout. (With the 460-4UA11/12 modules, a shutdown of the load
voltage will result in a timeout.)

Enable Jumper

Figure 9-2 Enable Input and Enable Jumper

Jumper inserted: Enable input (F+/F-) active (factory setting)

Jumper open: Enable input (F+/F-) switched off
Examples of functioning of the enable inputs:
To switch off individual subprocesses, i.e. outputs of various modules can
be operated from a common load supply and yet activated separately.
The load voltage of individual modules can be monitored without
additional circuitry. Any reactions to failure of the load voltage can be
programmed in the QVZ (timeout) organization block.

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Analog Input/Output Modules

Configuring You must observe the following when configuring systems:

Switching on At the latest 100 ms after power-up of the PLC, the voltage
must be present at the enable inputs of the I/O modules.
Switching off When the PLC has been switched off, the voltage at the
enable inputs of the I/O modules must still be present as
long as the internal 5 V voltage is present.

Switching off the You should observe the following instructions for switching off CCs and
CC equipment for supplying power to the enable inputs.

Separate or When there is a need to switch off the load power supply separately without
Common affecting the enabling of modules, there are the following possibilities for
Shutdown of the producing the enable voltage. These exist even when the load power supply
CC/EU and Load is used without an additional capacitor and common shutdown.
Power Supply
230 V AC supply for CC/EU and load power supply

b)
a) Battery
c)
–951 I/O Modules

F+
CC/EU
L+

Power Supply L+
230 V AC

Load Power Supply 24V

Supply for the enable inputs from:

a) 6ES5 951-4LB11 load power supply
b) Battery
c) Terminals for 24 V on the front plate of the power supply

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 Analog Input/Output Modules

24 V supply for CC/EU and I/Os

a)
Battery

I/O Modules b)

F+
CC/EU
L+

Power Supply 24V L+

24 V DC

Supply for the enable inputs from:

a) Battery
b) Terminals for 24 V on the front plate of the power supply

Common Proper functioning is ensured if the 24 V load power supply has an output
Shutdown of the capacitance of at least 4700 mF per 10 A of load current. Other units which
CC/EU and Load do not meet this condition can be adapted to this requirement by connecting a
Power Supply with 10000 mF / 40 V capacitor in parallel.
a 230 V AC Supply

I/O Modules

F+
CC/EU

L+

Power Supply
230 V AC 10000µF/
40V

Load Power Supply 24V

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Analog Input/Output Modules

9.3.3 Special Features of the 460 Analog Input Module

The 460 analog input module executes integrating processing of the digital
input signals; periodic system interference is thus suppressed.

You can adapt the process signals, according to the application, to the input
level of the analog-to-digital converter of the module with plug-in range
cards (resistor dividers or shunt resistors).

Broken Wire To monitor the sensors connected to the inputs, you can use the
Signal 6ES5 498-1AA11 range card (through-connection card) to implement the
“broken wire detection” mode. You can activate broken wire detection for 4
or 8 inputs.
Each time the input value is about to be encoded, a constant current is briefly
(1.6 ms) switched to the input terminals and the resultant current is checked
for a limit value. If a digital voltmeter is used to measure the signal at the
input, these current pulses may appear to indicate fluctuation of the signal.
The encoded value, however, is not affected.

Switching the If these apparent fluctuations of the signal are disturbing, e.g. during startup,
Tripping Current to you can switch the tripping current to the inactive state on the 460 analog
the Inactive State input module: apply + 24 V to pin 24 of the front connector, and 0 V to L-.
You must additionally set the mode switch to “without broken wire
detection.”
In the event of open-circuit of the sensor or its line, the voltage exceeds the
limit and a broken wire is indicated (bit 1 in data byte 1). The
analog-to-digital converter encodes the value 0.
A broken wire signal is only useful when the 6ES5 498-1AA11
through-connection card is used. With all other measurement cards, a broken
wire signal will result in incorrect reactions. Further details relating to the
broken wire signal can be found in Section 9.3.12.

Measuring Range If the measuring range is exceeded, the overflow bit (bit 2<M>0 of the low
Exceeded byte) is set.

Cyclic Sampling You have a choice of the cyclic sampling and selective sampling modes.
In the cyclic sampling mode, the module continuously encodes all measured
values. The digitized measured values are stored under the channel-related
address on the module (the high byte under this address, and the low byte
under the next higher address). The measured values can then be read by the
module at any time without waiting. When you operate the module in this
mode, you can set a module address from 0 to 255.

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 Analog Input/Output Modules

Selective Sampling In the selective sampling mode, a measured value is encoded on the central
initiative of the CPU. At the start of conversion, the module must be
addressed once with a write operation (T PW) by the user program. An active
bit (T = 1) is set during encoding.
With the transition to T = 0, the measured value becomes valid. With
non-constant cycle times, there may be non-periodic measured value
aquisition. If you operate the module in this mode, you must set a module
address from 128 to 255. You can also use the address range from 0 to 127
for selective sampling after appropriate programming in DB 1 of the user
program.

Time-Controlled Another method is that of time-controlled program processing. With this

Program method, certain program segments (e.g. FB 13) are automatically inserted
Processing into program processing at the 100 ms rate by a time-
controlled block (OB 13). A constant timebase is thus achieved.

FB 13 SPRM-B LEN=22 ABS

SHEET 1
SEGMENT 1
NAME: SELSAMPL EXAMPLE OF SELECTIVE SAMPLING

0005 :
0006 :
0007 :L PW128 READ ANALOG VALUE
0008 :T MW128 IN TO AUX: FLAG FW 128
0009 :A M 129.2 SCAN ACTIVITY =1?
000A :JC = END IF = 1, JUMP TO END
000B :T FW10 IF = 0, MEASURED VALUE IN FW 10
000C :T PB128 INITIATE SAMPLING
000D END : (1ST VALUE INVALID AFTER START)
000E
000F :
0010 :BE

Function Block You can read analog values of analog input modules with a function block
from the “basic functions” package.

BASP (Output The BASP signal is not interpreted by the 460 analog input module.
Inhibit)

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Analog Input/Output Modules

9.3.4 Setting the Module Address

You set the module address on the addressing switch. This also establishes
the necessary assignments between user program and process connection.
The module address is the sum of the decimal significances of the switch
rockers in the On setting (Ĥ).
One data word = two data bytes is required to process an input or an output.
A module with 16 inputs therefore reserves 32 byte addresses, and a module
with 8 inputs or outputs reserves 16 byte addresses.

Labeling Field You can affix the adhesive label with the desired module address on a free
labeling field under the addressing switch.
The switch rockers to be set for the module address specified as a decimal
number (address bit ADB) are marked by dots on the label.

Press the individual rockers of the addressing switch downwards with a

ballpoint pen or similar object, but not a pencil.

On Setting
Addressing Switch
(Switch Pressed)

Free Field for Label with

Module Address and
Address (Decimal) marked Switch Settngs
16
128
64

Decimal Signification of
8
32

4
2
1

the Address Bit

ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

Address Bit

ADB0 and ADB1 are not assigned

ADB2 is not connected

Figure 9-3 Labeling of the Addressing Switch

The address under which the module is referenced by the STEP 5 program is
independent of the slot.

Start Address, For analog input and analog output modules (8 inputs) only the lowest
Subaddress address (start address) is set. Other addresses (subaddresses) are decoded on
the module.

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 Analog Input/Output Modules

Note
The start address of the analog module must be a multiple of the double
channel number.
4 channels : 0, 8, 16, 24, ... 248
8 channels : 0, 16, 32, 48, ... 240

If one of the inputs or outputs (Channel 0 to 7) of a module is to be

addressed, the relevant subaddress must be specified in the program.
The subaddress of the input or output, based on the start address of the
module, is given by:
Start address + 2 x channel no. = subaddress
Example:
Analog input module with 8 inputs
The address is the sum of the significances set with the individual coding
switches.
160 = 128 + 32 = 27 + 25

On Setting
(Switch Pressed)

IB 160
16
128
64

8
32

1
2
ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

A module with 8 inputs (Channel 0 to 7) and start address 160 reserves the
address range from
160 to address 160 + 7 x 2 = 174
In this example, the next free address for another module is 176.
Addresses already assigned must not be set again.

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Analog Input/Output Modules

Addressing for However, analog input modules and analog output modules may be given the
Cyclic/Selective same address with cyclic sampling because they are distinguished by the user
Sampling program. This is not possible with selective sampling.
For cyclic sampling, you can address the module in the address range from 0
to 255, and for selective sampling from 128 to 255. For selective sampling,
you can also use the address range from 0 to 127 after appropriate
programming in DB 1 of the user program.
Example:
On an analog input module with start address 160 (IB 160 = input byte 160),
input channel 3 is to be scanned by the program.

Step Action
1 Affix the self-adhesive label with address 160 on the free field under the
addressing switch on the module. ADB 5 and ADB 7 are marked on the
label.
2 Press the appropriate rockers of the addressing switch down on the side
marked by a dot on the module cover. Set the other rockers to the opposite
setting. This way sets the start address of the module.
ADB 5 and ADB 7 results in 25 + 27 = 32 + 128 = 160
3 Enter the address 160 + 3 x 2 = 166 in the program for input channel 3.

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 Analog Input/Output Modules

9.3.5 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched.
During operation, the front connector and module must not be removed or
inserted without the enable jumper or active enable circuit.

Install an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Insert the module at the desired slot in the subrack and push it back in the
guides.
3 Latch the module by rotating the locking pin by 90o at the lower end of
the module. It must no longer be possible to pull the module forwards.
4 Engage the front connector on the support pin of the module.
The width of the support pin also provides keying to prevent front con-
nectors from being fitted to the wrong modules (e.g. front connectors with
115/230 V AC wiring cannot be plugged into analog modules).
5 Tighten the screw in the upper part of the front connector.

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Analog Input/Output Modules

Remove an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Slacken the screw in the upper part of the front connector. This causes the
front connector to be pressed out of the female connector of the module.
Contacts F+ and F- of the enable input at the upper end of the front con-
nector are thus opened first. If the enable input is active, power is removed
from the outputs and the module is isolated from the S5 bus.
3 Swing the front connector out and lift it away from the support pin of the
module.
4 Release the module by rotating the locking pin by 90o at the lower end of
the module. You can pull the module out of the subrack with a grip with
swivels outwards.

1 Module

Front
Connector

Support Mount
5
Support Pin
4
2
3

Figure 9-4 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Comply with VDE Specifications 0110 and 0160 to carry out the wiring of
supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules.
Detailed information on cabinet assembly, cabinet ventilation and protective
measures can be found in Chapter 3.

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 Analog Input/Output Modules

9.3.6 Marking of Modules and Front Connectors

For the marking of modules and front connectors, labels are supplied with the
module and central controller; they are affixed as shown in Figure 9-5.

1 2 4 1 5 3

Figure 9-5 Marking and Labeling of Modules

1 Label with the module address under which the module is referenced by the STEP 5 program
2 Labeling strip with the product designation for the module; space to mark the module version
and label the channels
3 Label with module address and marking of the required settings for the addressing switch
4 Labeling strip for terminal designations or connection diagrams (strip in the cover of the
front connector)
5 Name plate

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Analog Input/Output Modules

9.3.7 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm

mounting width with crimp connection and 40 mm mounting width with
screw connection are available (screwdriver blade width: 3.5 mm, maximum
torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector. Ferrules
are not required for screw connections, because the screw terminals are
provided with wire protection.
When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal Connector Max. Cross-Section Connector for Mounting Width

T
Type T
Type N off
No. R t dV
Rated Voltage
lt off M
Module
d l
Signal or Supply Aux. Jumper
6ES 497- Contacts
Conductor in Connector
1)

Crimp con- -4UA12 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 20 mm Operation

nection with fan
-4UA22 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 40 mm
Operation
O ti
Screw con- -4UB12 42 0.5 to 2.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 40 mm
without fan
nection
ti
-4UB31 42 0.5 to 1.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 20 mm

1) To multiply the supply and 0 V ground terminals, and to connect the enable input
2) The crimp contacts must be ordered separately for these types of connector.

Caution
! Only extra-low voltage 60 V DC with safety separation from system voltage
may be used for the 24 V DC supply and for the 24 V DC input signals.
Safety separation can be implemented to the requirements of, amongst other
sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional
extra-low voltage with safety separation) or VDE 0805/EN 60950/IEC 950
(as safety extra-low voltage SELV) or VDE 0106 Part 101.

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 Analog Input/Output Modules

9.3.8 Connection of Sensors

Observe the following information when connecting the sensors.

Connection of With isolated sensors, it is possible for the measuring circuit to develop a
Current or Voltage potential with respect to ground which exceeds the permissible potential
Sensors difference U<M>CM (see maximum values of the individual modules). To
prevent this, you must connect the negative potential of the sensor to the
reference potential of the module (0 V bus).
Example:
Temperature measurement on a busbar with insulated thermocouples

Equipotential In the worst case, the measuring circuit can develop an excessively high
Bonding potential on account of a static charge or contact resistances. This must be
prevented with an equipotential bonding conductor.
The permissible potential difference (UCM) between the inputs and the 0 V
bus must not be exceeded.
Depending on the system or type of sensor, the potential difference must be
kept in the permissible region with epuipotential bonding.

Analog Input Module

Sensor, Isolated M+

A
+ MUX
U
E
–
M– Range
Card for
4 Inputs

0 V Bus

Equipotential Bonding Conductor

Figure 9-6 Measuring Circuit with Equipotential Bonding Conductor for the 460 Analog Input Module

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Analog Input/Output Modules

Example:
(Special case) The temperature of the busbar of an electroplating bath is to be
measured with an uninsulated thermocouple.

Analog Input Module

Sensor,
Not Isolated
M+
A
+ MUX
UE
–
M– Range
Card for
4 Inputs

+ #
U CM
–

U CM 0 V Bus

Figure 9-7 Measuring Circuit without Equipotential Bonding Conductor for the 460 Analog Input Module

The potential of the busbar with respect to the reference potential of the
module is, for example, 24 V DC. A 460 analog input module with isolated
input is used (UCM = 60 V AC/75 V DC). An equipotential bonding
conductor must not be laid here because it would short-circuit the busbar.

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 Analog Input/Output Modules

9.3.9 Connecting a Compensating Box for Thermal E.M.F.

Measurement

If the room temperature fluctuations at the reference point (e.g. in the

terminal box) affect the measurement result and you do not wish to use a
thermostat, you can compensate for the effect of temperature on the reference
point with a compensating box. Between - 10 and + 70 oC, it compensates for
the change in thermal e.m.f. cause by temperature deviation (compensating
box, see Catalog MP 11). Ensure that the compensating box has thermal
contact with the terminals.
If the compensating box is aligned at 20 oC, this must be taken into account
in temperature evaluation (20 oC measuring point temperature = 0 mV).
Pins 22 and 23 are extended on analog input modules as an input for the
compensating voltage. You must select a common input loop for all inputs on
mode switch 2.
The compensating box must be connected in a floating circuit. The power
supply unit of the compensating box must have a grounded shield winding to
avoid AC system interference being picked up. A separate compensating box
with its special power supply unit is required for each analog input module.

Analog Input Module

Terminal Box
Thermocouple
M+ A
MUX
Range
M– Card for
4 Inputs
6ES5 498-
– -1AA11
#
Compen-
sating
Box
+ D
22–

23+

0 V Bus
Power =
Supply
for Com-
pensat-
ing Box ~

Figure 9-8 Connecting a Compensating Box

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Analog Input/Output Modules

9.3.10 Connecting Resistance Thermometers in the Standard Pt 100

Range
The series-connected resistance thermometers (up to 8 Pt 100s) are fed with a
current of 2.5 mA (IC+/IC-) by a constant current generator. The voltage at the
Pt 100’s is picked off at measurement inputs M+ and M-. In this mode, the
whole temperature range of the Pt 100 (-200 °C to +840 °C) is available. The
mode is printed on the cover of the module as follows:
“resistance thermometer uncompensated full range.” Other voltage sensors
can be connected in a floating circuit at the M+/M- inputs of a card which are
not assigned to resistance thermometers (voltage range 500 mV).
+

460 Analog Input Module

Pt 100 Card 1
–
M+
A
CH0 M–

Range
Pt 100 CH1 Card for MUX
4 Inputs
6ES5 498-
CH2 -1AA11
#
Pt 100
CH3 D
0...500 mV

Card 2

CH4
UCM
0...500 mV
Range
UCM 2) Card for
4 Inputs
6ES5 498-
-1AA11

1)
CH7
Pt 100
IC–
L+

L–
IC+
const.
2.5 mA

0 V Bus

Figure 9-9 Connecting Resistance Thermometers in the Standard Pt 100 Range

1) If no Pt 100 is connected to CH4 to CH7, other voltages and currents can be measured at these channels with cards
6ES5 498-1AA21, 6ES5 498-1AA31, 6ES5 498-1AA41, 6ES5 498-1AA51, 6ES5 498-1AA61, 6ES5 498-1AA71.
2) When cards 6ES5 498-1AA41, 6ES5 498-1AA51 or 6ES5 498-1AA71 are used, a short-circuit jumper is not required.

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 Analog Input/Output Modules

9.3.11 Connecting Resistance Thermometers in the Extended Pt 100

Range

The series-connected resistance thermometers (up to 8 Pt 100s) are fed with a

current of 2.5 mA (IC+/IC-) by a constant current generator. The voltage at the
Pt 100s is picked off at measurement inputs M+ and M-.
In this mode, the temperature range of approximately -100 °C to +100 °C has
a more accurate resolution. The mode is printed on the cover of the module
as follows: “resistance thermometer compensated low range.”You should
only use the 6ES5 498-1AA11 range card (" 50 mV / 500 mV).
Unused inputs must be connected in parallel to a wired input. In the
following figure, for example, these are the inputs CH4 to CH7.

M+
Ch0 6ES5498-
M– 1AA11
M+
Ch1
M–
M+
Ch2
M–
M+
Ch3
M–

M+
Ch4 6ES5498-
M– 1AA11
M+
Ch5
M–
M+
Ch6
M–
M+
Ch7
M–

Ic–

Ic+
2.5mA
24V L+

M24V L–

Figure 9-10 Connecting Resistance Thermometers in the Extended Pt 100 Range

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C79000-G8576-C199-06 9-21
Analog Input/Output Modules

9.3.12 Broken Wire Signal

Broken Wire An open-circuit in the lines to a resistance thermometer is indicated as

Signal in the follows:
Standard Pt 100
Range
Broken Wire at Module Reaction, Encoded Value Error Bit E
M+ 0 1
M– 0 1
Pt 100 0 1) 1
IC+ 0 0
IC– 0 0
1) With the 460 analog input module, the value 0 is also encoded for the intact Pt 100 resistances
because the auxiliary circuit is interrupted; the error bit will not be set for these channels.

If the mode “without broken wire signal” is selected on the module, an

open-circuit of the resistance thermometer is indicated with an overflow.
Unassigned channels can be used for voltage or current measurement.

Broken Wire If a line of the auxiliary circuit (IC+, IC-) is interrupted, the “negative range
Signal in the limit” is encoded for all inputs and the overflow bit is set to “1.” In the event
Extended Pt 100 of a sensor or measuring line open-circuit, the error bit is additionally set to
Range “1” for the relevant channel.

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 Analog Input/Output Modules

9.3.13 Connecting Transducers

Two-wire transducer (short-circuit protected supply voltage via the range
card of the analog input module)
L+ L– Analog Input Module
M+

A
+ 4...20 mA MUX

– Range
Card for
4 Inputs
6ES5-498-
M– -1AA51
#

0 V Bus

Four-wire transducer (with separate supply voltage)

M+ Analog Input Module

230 V AC

+4...20 mA A
+ MUX
Range
– Card for
4 Inputs
6ES5-498-
-1AA71
M– #

Do not exceed max. permissible potential difference! 0 V Bus

Four-wire transducer with a two-wire transducer card

M+ L+ L– Analog Input Module
230 V AC

+ 0...20 mA A
MUX

–
Range
M– Card for
4 Inputs
6ES5-498-
#
-1AA71

L– (0 Vext) 0 V Bus

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C79000-G8576-C199-06 9-23
Analog Input/Output Modules

9.3.14 Measured-Value Representation

Digital (rated input range $ 50 mV)

Measured-Value
Representation as
Two’s Complement

Units Input Volt- Byte 0 Byte 1

age iin mV
V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
212 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w4096 100.0 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 99.976 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 50.024 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 50.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 49.976 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 25.0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
1023 23.976 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.024 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated
–1 –0.024 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 range
–1023 – 24.976 1 1 1 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–1024 – 25.0 1 1 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2047 – 49.976 1 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–2048 – 50.0 1 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2049 – 50.024 1 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
–4095 – 99.976 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–4096 –100.0 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 1 Overflow

A = Active bit
E = Error bit
OV = Overflow bit

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 Analog Input/Output Modules

Digital (rated input range $ 50 mV)

Measured-Value
Representation as
Value and Sign

Units Input Volt- Byte 0 Byte 1

age iin mV
V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w4096 100.0 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 99.976 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 50.024 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 50.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 49.976 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 25.0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
1023 23.976 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.024 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated
–0 0.0 1 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 range
–1 –0.024 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–1023 – 24.976 1 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–1024 – 25.0 1 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2047 – 49.976 1 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–2048 – 50.0 1 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2049 – 50.024 1 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0 Overrange
–4095 – 99.976 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–4096 –100.0 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow

A = Active bit
E = Error bit
OV = Overflow bit

Bit 212 is interpreted as the sign.

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C79000-G8576-C199-06 9-25
Analog Input/Output Modules

Measured-Value The resolution with Pt 100 resistance thermometers is approximately 0.25 oC.
Representation for 1 ohm  10 units
Resistance
Thermometers in
the Standard Pt
100 Range

Units Resistance in Temper- Byte 0 Byte 1

ohms ature in
oC 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
4096 400.0 – 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 399.90 – 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 200.98 269.1 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 200.0 266.5 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 199.90 266.0 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 100.00 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated range
1023 99.90 –0.2 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.098 – 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 – 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0

A = Active bit
E = Error bit
OV = Overflow bit
S = Sign

When Pt 100 resistance thermometers are connected, the maximum

temperature in the rated range is 266 oC. If it can be ensured that the
temperature does not exceed 850 oC, the input value may extend into the
overrange. The resolution is then 4095 units. Unused inputs can be utilized
for voltage measurements in the 500 mV range (see front connector
assignments).

Extended Pt 100 In addition to the standard Pt 100 range, there is an extended Pt 100 range on
Range the 460 analog input module. You can select this with the mode switch.
The following is printed on the cover of the module to set the Pt 100 mode:
Standard range: “resistance thermometer uncompensated full range”
Extended range: “resistance thermometer compensated low range”
In this range, the basic resistance of the Pt 100 at 0 oC (100 ohms) is
compensated for on the module. As in the standard range, the Pt 100 is fed
with a constant current of 2.5 mA. Using the overrange (- 100 mV to + 100
mV), this results in a temperature range of approx. -100 °C to + 100 °C.
This measuring range of 200 °C is resolved to 8192 units with the correct
sign for the temperature. One unit thus corresponds to approximately 0.025
°C. If you select the extended Pt 100 range, you can use all 8 analog inputs in
this range only.
You should only use the 6ES5 498-1AA11 range card ($ 50 mV/500 mV).

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9-26 C79000-G8576-C199-06
 Analog Input/Output Modules

Measured-Value
Representation in
the Extended Pt
100 Measuring
Range (Two’s
Complement)

Units Pt 100/ohms Temperatu Byte 0 Byte 1

i oC
in
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
>4095 w 140.0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 Overflow
4095 139.99 103.74 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 Overrange
2049 120.01 51.61 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
2048 120.0 51.58 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+1 100.01 0.026 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 100.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Rated range
–1 99.99 –0.026 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
–2048 80 –50.78 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–2049 79.99 –50.81 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 Overrange
–4095 60.01 –100.60 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
<–4095 v 60 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Overflow
Broken wire
–4095 Arbitrary Arbitrary 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Broken wire
Ic+/Ic-2)
–4095 Arbitrary Arbitrary 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 Broken wire
Sensor
Measuring
line 1)
1) Only with broken wire monitor activated, error bit = 1 only for faulty
channel; for sensor broken wire, overflow bit = 1 for all channels
2) On account of the Pt 100 series circuit, this bit combination always
appears for all channels if the supply line is open-circuit.
A = Active bit
E = Error bit
OV = Overflow bit
S = Sign

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C79000-G8576-C199-06 9-27
Analog Input/Output Modules

Measured-Value Measuring range 500 mV; card with 31.25 ohm shunt
Representation for (6ES5 498-1AA51/AA71)
Current Measuring
Ranges from 4 to The 4 to 20 mA range is resolved to 2048 units at an interval of 512 to 2560.
20 mA If you require a representation from 0 to 2048, you must subtract 512 units by
software. Please note the following:
A broken wire signal cannot be emitted.
Detection of the overrange can be achieved by scanning bits 29 and 211.
A broken wire can be detected with currents < 3 mA.

Current Limiting
If you short-circuit the positive and negative terminals of the transducer
when using the 6ES5 498-1AA51 range card (for a two-wire transducer),
the current is limited to about 28 mA. Until the thermal current limiting
circuit responds in the range card (about 3 s), a short-circuit current of
approximately 250 mA flows; this sets the overflow bit for this duration
at all channels.

Units Input Cur- Byte 0 Byte 1

rentt iin mA
A
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w 4096 w 32.000 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0 1 Overflow
4095 31.992 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0 0 Overrange
3072 24.0 0 1 1 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Short-circuit with two-
3071 23.992 0 1 0 1 1 1 1 1 1 1 1 1 1 0/1 0 0 wire transducer
2561 20.008 0 1 0 1 0 0 0 0 0 0 0 0 1 0/1 0 0
2560 20.0 0 1 0 1 0 0 0 0 0 0 0 0 0 0/1 0 0
2048 16.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Rated range
512 4.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0/1 0 0
511 3.992 0 0 0 0 1 1 1 1 1 1 1 1 1 0/1 0 0 Range
384 3.0 0 0 0 0 1 1 0 0 0 0 0 0 0 0/1 0 0 underflow
383 2.992 0 0 0 0 1 0 1 1 1 1 1 1 1 0/1 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Broken wire

A = Active bit
E = Error bit
OV = Overflow bit
S = Sign

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 Analog Input/Output Modules

9.3.15 Technical Specifications

6ES5 460-4UA13 Analog Input Module

Rated input ranges with cards for every 4 channels

– 6ES5 498-1AA11 $ 12.5 mV/$50 mV/$500 mV/Pt 100
– 6ES5 498-1AA21 $1V
– 6ES5 498-1AA31 $ 10 V
– 6ES5 498-1AA41 $ 5 mA/$ 20 mA
– 6ES5 498-1AA51 4 to 20 mA for two-wire transducer
– 6ES5 498-1AA61 $5V
– 6ES5 498-1AA71 4 to 20 mA for four-wire transducer
Number of inputs 8 voltage/current inputs or
8 resistance inputs (Pt 100)
Measured-valuerepresentation 13 bits (two’s complement) or 12 bits + sign;
$ 2048 units in rated range;
512 to 2560 units for 4 to 20 mA
Measuring principle Integrating
Isolation Yes
8 inputs tested with respect to 0 V at 500 V AC
Permissible potential difference between reference potentials 25 V AC/60 V DC max.
of sensors and the module (UCM) and between sensors (chan-
nels)
Power Supply
– digital section from system bus 5 V $ 5 %; 130 mA typical
– analog section from load voltage 24 V; approx. 50 mA 1)
– enabling for module F+/F- 24 V; approx. 5 mA
– tripping current L+ 24 V; approx. 5 mA
Constant current source for Pt 100 connection IC+/IC- 2.5 mA; TC = $ 5 x 10–5/K
Integration time 20 ms at 50 Hz; 16 2/3 ms at 60 Hz
Encoding time per measured value 60 ms at 50 Hz; 50 ms at 60 Hz

1) Plus 20 mA max. per connected two-wire transducer.

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C79000-G8576-C199-06 9-29
Analog Input/Output Modules

Cycle time for 8 measured values with 2048 units Approx. 0.48 s at 50 Hz
(max. delay time for measured-value acquisition)
Input resistance (with card) for input ranges:
$12.5 mV/$50 mV/$500 mV/Pt 100 w 10 MW
$1 V 90 kW
$5 V/$10 V 50 kW
$5 V/$20 mA 25 W
4 to 20 mA 31.25 W
Measuring point-related error signal
– for overflow Yes
– for broken wire Yes, configurable
(at $12.5 mV, $ 50 mV $ 500 mV and Pt 100 1) )
Max. permissible input voltage without destruction $18 V; 75 V for 1 ms max. and duty ratio 1:20
Interference suppression for f = n x (50/60 Hz $1 %)
– with common-mode interference w 100 dB
– with differential-modeinterference w 40 dB, interference voltage amplitude
but 100 % max. of measuring range referred to peak value
Error referred to rated value
– linearity $ 1 unit
– tolerance
at w50 mV $ 1 unit
at $ 12.5 mV $ 3 units
– polarity reversal error
at w 50 mV $ 1 unit
at $12.5 mV $ 2 units
– temperature error 1 x 10 –4 /K
Error caused by modules with input range
$ 1 V/$ 5 V /$ 10 V 2 x 10 –3; TC = $ 10 x 10 –5 /K
$ 20 mA/4 to 20 mA 10 –3; TC = $ 5 x 10 –5 /K
Voltage test to VDE 0160 Between inputs and ground point
tested at 500 V AC
Surge voltage test to IEC 255-4 Between inputs and L-:
Vp = 1 kV, 1.2/50 µs
Extended Pt 100 measuring range

Measuring range including overrange Approx. - 100 oC to + 100 oC

Resolution 0.025 oC per unit
Basic error at T = 25 oC $0.2 oC max.
Operational error at T = 0 to 65 oC $0.5 oC max.
Range card 6ES5 498-1AA11
Environmental specifications See technical specifications of the S5-135U/155U CC

1) In the event of open-circuit of the live IC+ and IC- lines, the digital value 0 is indicated.

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 Analog Input/Output Modules

Setting the Mode You select the desired mode of the analog input module by setting mode
switches I and II according to the following table.
Please note that all switch rockers marked with a dot must be set on both
mode switches. To set the desired mode, press the rockers downwards on the
side marked with a dot in the table.

Mode Mode Switch I Mode Switch II

(Digital Section) (Digital Section)
Without reference point compensation

With reference point compensation

Measuring range
Extended Pt 100 measuring range

500 mV; mA (standard Pt 100 measuring

range)
50 mV

Value and sign

Two’s complement

Gain x 1
(normal setting)

Gain x4

Sampling
selective

cyclic

Line frequency
50 Hz

60 Hz

Channels 0 to 3

with broken wire signal

Channels 4 to 7
Channels 0 to 3

without broken wire signal

Channels 4 to 7

X = Switch is not assigned; any switch setting.

Ĥ = Switch setting

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Analog Input/Output Modules

Labeling of switches on the module cover:

mark selected switch mark selected switch

positions here positions here

COMPENS.
broken wire detection without

VOLTAGE
channel 0...3 compensation
broken wire detection with
channel 4...7 compensation
without broken

INPUT RANGE
resistance thermometer
wire detection compensated low range
500 mV V...ma
line frequency 50 Hz resistance thermometer
uncompensated full range

submodule1
line frequency 60 Hz 50mV

(ch. 0...3)

FORMAT
singlescanning result and sign

SI

DATA
two‘s complement
cyclicscanning

normal mode (gain*1)

GAIN
special mode (gain*4)

submodule 2
(ch. 4...7)
=press SII

Inserting Range On one 460 analog input module, you can insert two cards to connect four
Cards inputs each, and secure them with a srew. There are voltage divider, shunt
and through-connection cards for the various ranges.

Range Card Type 6ES5 498–

-1AA11 -1AA21 -1AA31 -1AA41 -1AA51 -1AA61 -1AA71
M+ M+ M+ M+ M+ M+ M+
Circuit of the
cards, 4x L+
L–
M– M– M– M– M– M– M–
Mode " 500 mV "1 V " 10 V " 20 mA 4...20mA "5V 4...20mA
500 mV/ mA Pt 100 2-wire trans- 4-wire trans-
Pt 100 ducer ducer
+ Gain x 1
Mode " 50 mV (" 100 mV) (" 1 V) (" 2 mA) – (" 500 mV) –
50 mV
+ Gain x 1
Mode (" 125 mV) (" 250 mV) (" 2.5 V) (" 5 mA) – (" 1.25 V) –
500 mV/ mA
+ Gain x 4

Mode (" 12.5 mV) (" 25 mV) – – – – –

50 mV
+ Gain x 4

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 Analog Input/Output Modules

For a defined mode (50 mV or 500 mV) you can insert cards with different
ranges for four inputs, e.g. for the 500 mV mode:
4 inputs, range $ 500 mV; 1 card 6ES5 498-1AA11
4 inputs, range $ 10 V; 1 card 6ES5 498-1AA31

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Analog Input/Output Modules

Front Connector Voltage or current-input resistance thermometer or connection of two-wire

Assignments transducer

Connection of Front Strip Block Diagram Connection of Front Strip Block Diagram
Process Signal of the Modules Process Signal of the Modules
Lines Pin Lines Pin
F+ F+
1 t 1 t
F– F–
2 2
L+ L+
3 3
4 4
+
Ch.0
1) – Ch.0 6
ADU
6 ADU

8 8
+
Ch.1 Ch.1
6ES5 498–1AA51
–
Range Card 1

1) 10 10

Range Card 1
13 13
+
Ch.2 Ch.2
–
1) 15 15

17 17
+
Ch.3 Ch.3
–
Data Memory and S5 Bus Control

Data Memory and S5 Bus Control

1) 19 19
4) L– Itrip
4) L– Itrip L–
L– 21 21
Comp.– 22 Comp.– 22
Comp.+ 23 Comp.+ 23
24 L+
3) L+ 3) 24
+ 25 25
T 2)Ch.4 L+
Ch.4
1) – 27 27
L–
+ 29 29
T 2)Ch.5 Ch.5
1) – 31 31
Range Card 2
Range Card 2

+ 34 34
T 2)Ch.6 Ch.6
1) – 36 36

+ 38 38
T 2)Ch.7 Ch.7 #
1) – 40 # I 40
I+ c+
c 41 41
I I
I– 42 const. I 42 const.
c c–

Figure 9-11 Front Connector Assignments

1) Observe permissible potential difference between sensor ground and reference potential of modules or between
sensor grounds.
2) Two-wire transducer
3) Only required to switch off the tripping current without broken wire detection; 0 V at L-.
4) Connect L- to the central ground point (reference potential).

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9.4 The 463 Analog Input Module

9.4.1 Design
The modules are designed as plug-in PCBs for central controllers and
expansion units with a backplane connector and with a blade connector to
accept a plug-in front connector. You can directly connect the process signal
lines to the front connector, which is available separately, with screw or
crimp terminals.

Addressing Situated on each module is an addressing switch with six rockers to set the
Switch, Mode module address. Analog input modules also have two switches on the side
Switches with eight rockers for setting the mode, and receptacles for range cards.
The modules are protected by covers on both sides.

Addressing Switch

Blade Connector

Front Connector

Mode Switch

Figure 9-12 Analog Input Module

9.4.2 Function of the Enable Input

The 463 module has an enable circuit. You can use the enable inputs to
switch off individual modules whilst the PLC is in operation. This means
that:
The module can no longer be addressed by the user program.
Modules which are switched off can be removed or inserted during operation.
If this is not necessary, operate the module with the enable input switched
off.

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Analog Input/Output Modules

Enable Input The enable circuit requires an external 24 V voltage at enable inputs F+/F- in
the front connector. If there is no voltage at F+/F-, the modules will not
acknowledge.
When the front connector is swivelled away from the front strip of the
module, the supply of power to the enable input is interrupted, i.e. the
module is switched off and can no longer be addressed by the user program: a
timeout (QVZ) occurs in the CC.

Switching off the The -4Ux12 type modules additionally offer the facility for changing the
Enable Input enable mode. The modules have a jumper accessible from above in the
vicinity of the addressing switch.

Enable Jumper

Figure 9-13 Enable Input and Enable Jumper

Jumper inserted: Enable input (F+/F-) active (factory setting)

Jumper open: Enable input (F+/F-) switched off
Examples of functioning of the enable inputs:
To switch off individual subprocesses, i.e. outputs of various modules can
be operated from a common load supply and yet activated separately.
The load voltage of individual modules can be monitored without
additional circuitry. Any reactions to failure of the load voltage can be
programmed in the QVZ (timeout) organization block.

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 Analog Input/Output Modules

Configuring You must observe the following when configuring systems:

Switching on At the latest 100 ms after power-up of the PLC, the voltage
must be present at the enable inputs of the I/O modules.
Switching off When the PLC has been switched off, the voltage at the
enable inputs of the I/O modules must still be present as
long as the internal 5 V voltage is present.

Switching off the You should observe the following instructions for switching off CCs and
CC equipment for supplying power to the enable inputs.

Separate or When there is a need to switch off the load power supply separately without
Common affecting the enabling of modules, there are the following possibilities for
Shutdown of the producing the enable voltage. These exist even when the load power supply
CC/EU and Load is used without an additional capacitor and common shutdown.
Power Supply
230 V AC supply for CC/EU and load power supply

b)
a) Battery

I/O Modules c)
–951

F+

CC/EU
L+

Power Supply L+
230 V AC

Load Power Supply 24V

Supply for the enable inputs from:

a) 6ES5 951-4LB11 load power supply
b) Battery
c) Terminals for 24 V on the front plate of the power supply

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Analog Input/Output Modules

24 V supply for CC/EU and I/Os

a)
Battery
b)
I/O Modules

F+
CC/EU
L+

Power Supply 24V L+

24 V DC

Supply for the enable inputs from:

a) Battery
b) Terminals for 24 V on the front plate of the power supply

Common Proper functioning is ensured if the 24 V load power supply has an output
Shutdown of the capacitance of at least 4700 mF per 10 A of load current. Other units which
CC/EU and Load do not meet this condition can be adapted to this requirement by connecting a
Power Supply with 10000 mF /40 V capacitor in parallel.
a 230 V AC Supply

I/O Modules

F+
CC/EU

L+

Power Supply
230 V AC 10000µF/40V

Load Power Supply 24V

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 Analog Input/Output Modules

9.4.3 Special Features of the 463 Analog Input Module

The 463 analog input module executes integrating processing of the digital
input signals; periodic system interference is thus suppressed.

Adaptation of the The measuring range for each channel is adapted by appropriately connecting
Measuring Range the sensors and with jumpers in the front connector of the module (see the
front connector assignments).

Note
The ohmic resistance of the jumper with which the measuring range is set is
also measured. As the resistance of this jumper is not inconsiderable (0.5 to
0.7 ohms in relation to the measuring shunt of 50 ohms) when I/O module
cables with integral connectors and subsequent wiring blocks are used, the
measurement result may be corrupted accordingly.

9.4.4 Setting the Module Address

You set the module address on the addressing switch. This also establishes
the necessary assignments between user program and process connection.
The module address is the sum of the decimal significances of the switch
rockers in the On setting (Ĥ).
One data word = two data bytes is required to process an input or an output.
A module with 4 inputs therefore reserves 8 byte addresses.

Labeling Field You can affix the adhesive label with the desired module address on a free
labeling field under the addressing switch.

The switch rockers to be set for the module address specified as a decimal
number (address bit ADB) are marked by dots on the label. The unmarked
switches should be switched off.

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Analog Input/Output Modules

Press the individual rockers of the addressing switch downwards with a

ballpoint pen or similar object, but not a pencil.

On Setting
(Switch Pressed) Addressing Switch

Free Field for Label with

Module Address and
Adresse (dezimal) marked Switch Settings

Decimal Significance of

16
128
64

8
32

4
2
1
the Address Bit

ADB7
ADB6
ADB5
ADB4
ADB3
Address Bit

ADB0
ADB2
ADB1
ADB0 and ADB1 are not assigned
ADB2 is not connected

Figure 9-14 Labeling of the Addressing Switch

The address under which the module is referenced by the STEP 5 program is
independent of the slot.

Start Address, For analog input and analog output modules (4 inputs) only the lowest
Subaddress address (start address) is set. Other addresses (subaddresses) are decoded on
the module.

Note
The start address of the analog module must be a multiple of the double
channel number.
4 channels : 0, 8, 16, 24, ... 248

If one of the inputs or outputs (Channel 0 to 3) of a module is to be

addressed, the relevant subaddress must be specified in the program.
The subaddress of the input or output, based on the start address of the
module, is given by:
Start address + 2 x channel no. = subaddress

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 Analog Input/Output Modules

Example:
Analog input module with 4 inputs
The address is the sum of the significances set with the individual coding
switches.
160 = 128 + 32 = 27 + 25

On Setting
(Switch Pressed)

IB 160

16
128
64
32

8
4
2
1
ADB7
ADB6
ADB5
ADB4
ADB3

ADB1
ADB2

ADB0
A module with 4 inputs (Channel 0 to 3) and start address 160 reserves the
address range from
160 to address 160 + 3 x 2 = 166
In this example, the next free address for another module is 168.
Addresses already assigned must not be set again.

Example:
On an analog input module with start address 160 (IB 160 = input byte 160),
input channel 3 is to be scanned by the program.

Step Action
1 Affix the self-adhesive label with address 160 on the free field
under the addressing switch on the module. ADB 5 and ADB 7
are marked on the label.
2 Press the appropriate rockers of the addressing switch down on
the side marked by a dot on the module cover. Set the other
rockers to the opposite setting. This way sets the start address of
the module.
ADB 5 and ADB 7 results in 25 + 27 = 32 + 128 = 160
3 Enter the address 160 + 3 x 2 = 166 in the program for input
channel 3.

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Analog Input/Output Modules

9.4.5 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched.
During operation, the front connector and module must not be removed or
inserted without the enable jumper or active enable circuit.

Install an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it up-
wards and out.
2 Insert the module at the desired slot in the subrack and push it
back in the guides.
3 Latch the module by rotating the locking pin by 90o at the
lower end of the module. It must no longer be possible to pull
the module forwards.
4 Engage the front connector on the support pin of the module.
The width of the support pin also provides keying to prevent
front connectors from being fitted to the wrong modules (e.g.
front connectors with 115/230 V AC wiring cannot be plugged
into analog modules).
5 Tighten the screw in the upper part of the front connector.

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 Analog Input/Output Modules

Remove an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it up-
wards and out.
2 Slacken the screw in the upper part of the front connector. This
causes the front connector to be pressed out of the female con-
nector of the module. Contacts F+ and F- of the enable input at
the upper end of the front connector are thus opened first. If the
enable input is active, power is removed from the outputs and
the module is isolated from the S5 bus.
3 Swing the front connector out and lift it away from the support
pin of the module.
4 Release the module by rotating the locking pin by 90 at the
lower end of the module. You can pull the module out of the
subrack with a grip with swivels outwards.

1 Module
Front
Connector

Support Mount
5
Support Pin
4
2
3

Figure 9-15 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Comply with VDE Specifications 0110 and 0160 to carry out the wiring of
supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules.
Detailed information on cabinet assembly, cabinet ventilation and protective
measures can be found in Chapter 3.

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Analog Input/Output Modules

9.4.6 Marking of Modules and Front Connectors

For the marking of modules and front connectors, labels are supplied with the
module and central controller; they are affixed as shown in Figure 9-16.

1 2 4 1 5 3

Figure 9-16 Marking and Labeling of Modules

1 Label with the module address under which the module is referenced by the STEP 5 program
2 Labeling strip with the product designation for the module; space to mark the module version
and label the channels
3 Label with module address and marking of the required settings for the addressing switch
4 Labeling strip for terminal designations or connection diagrams (strip in the cover of the
front connector)
5 Name plate

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 Analog Input/Output Modules

9.4.7 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm

mounting width with crimp connection and 40 mm mounting width with
screw connection are available (screwdriver blade width: 3.5 mm, maximum
torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector. Ferrules
are not required for screw connections, because the screw terminals are
provided with wire protection.

When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal Connector Max. Cross-Section Connector for Mounting Width of

T
Type T
Type N off
No. R t dV
Rated Voltage
lt M d l
Module
Signal or Supply Aux. Jumper
6ES 497- Contacts
Conductor in Connector
1)

Crimp con- -4UA12 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 20 mm Operation

nection with fan
-4UA22 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 40 mm
Operation
O ti
Screw con- -4UB12 42 0.5 to 2.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 40 mm
without fan
nection
ti
-4UB31 42 0.5 to 1.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 20 mm

1) To multiply the supply and 0 V ground terminals, and to connect the enable input
2) The crimp contacts must be ordered separately for these types of connector.

Caution
! Only extra-low voltage 60 V DC with safety separation from system voltage
may be used for the 24 V DC supply and for the 24 V DC input signals.
Safety separation can be implemented to the requirements of, amongst other
sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional
extra-low voltage with safety separation) or VDE 0805/EN 60950/IEC 950
(as safety extra-low voltage SELV) or VDE 0106 Part 101.

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Analog Input/Output Modules

9.4.8 Measured-Value Representation

Measured-Value (rated input ranges 0 to 1 V, 0 to 10 V, 0 to 20 mA, 4 to 20 mA)

Representation as
Value and Sign

Units Rated Range Byte 0 Byte 1

0...10 0...1 V 0... 20 4...20 4...20 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
V mV mA mA 1) mA 2) 211 210 29 28 27 26 25 24 23 22 21 20 0 0 0 OV
2047 19.99 1999 39.98 35.98 31.98 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 1 3)
1536 15.00 1500 30.00 28.00 24.00 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1
1535 14.99 1499 29.98 27.98 23.98 0 1 0 1 1 1 1 1 1 1 1 1 0 0 0 0 4)
1280 20.00 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0
1025 10.01 1001 20.02 20.02 16.02 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0
1024 10.00 1000 20.00 20.00 16.00 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5)
1023 9.99 999.02 19.98 19.98 15.98 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0
512 5.00 500.00 10.00 12.00 8.00 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
511 4.99 499.00 9.98 11.98 7.98 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 0
256 0.976 4.00 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
1 0.098 0 0.02 4.0156 0.0156 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0
0 0 – 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–1 – 0.976 –0.02 3.9844 –0.015 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
– 51 0.098 –50 –1 3.184 6 1 1 1 1 1 1 0 0 1 1 0 1 0 0 0 0
– 0.5 –0.816
1) With data format setting 0 to 1023 (switch on module)
2) With data format setting 256 to 1279 (switch on module)
3) Overflow
4) Overrange
5) Rated range

OV = Overflow bit

Shunt Resistor A 50 ohm shunt resistor is used for the 0 to 20 mA range; for 4 to 20 mA,
the resistor value is 62.5 ohms.
The shunt resistors are permanently fitted to the 463 analog input module.
Broken wire detection is not possible.
For the 4 to 20 mA current measuring range, a broken wire can be detected
with currents > 3 mA.

Current Limiting If the positive and negative terminals of the transducer are short-circuited
when two-wire transducers are used (4 to 20 mA), the current is limited to
approximately 28 mA. Until the thermal current limiting circuit responds
(about 3 s) a short-circuit current of about 250 mA flows; this sets the
overflow bit for the short-circuited channel for this duration.

Load Voltage The failure of the load voltage can be detected from the result of encoding
(values < -51 units).

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9.4.9 Technical Specifications

6ES5 463-4UA12 and 6ES5 463-4UB12 Analog Input Modules
Rated input ranges - 0.05 to + 1 V
(selectable at front connector) - 0.5 to + 10 V
-1 to + 20 mA
+ 4 to 20 mA for 2-wire transducer
+ 4 to 20 mA for 4-wire transducer
Number of inputs 4 voltage/current inputs
Measured value representation 11 bits (two’s complement)
1024 units in rated range
Overrange 50 % (with full accuracy)
Error signal for overflow Yes (upward of 50 % overrange)
Measuring principle Integrating
Conversion principle Voltage-frequency conversion
Isolation Yes, 4 inputs with respect to 0 V and each other
Permissible potential difference between ref. potentials of 25 V AC/60 V DC max.
sensors and module (UCM) and between sensors (chan-
nels)
Power Supply
– digital section from system bus 5 V $ 5 %; 150 mA typical
– analog section from load voltage 24 V; approx. 150 mA
– enabling of module F+/F- 24 V; approx. 7 mA
Integration time
– 463-4UA12 20 ms at 50 Hz
– 463-4UB12 16 2/3 ms at 60 Hz
Encoding time per measured value
– 463-4UA12 20 ms at 50 Hz
– 463-4UB12 16 2/3 ms at 60 Hz
Cycle time for 4 measured values (max. delay time of
measured value acquisition)
– 463-4UA12 20 ms at 50 Hz
– 463-4UB12 16 2/3 ms at 60 Hz
Input resistance for input ranges
1V > 10 MW
10 V 90 kW
20 mA 50 W
4 to 20 mA 62.5 W
Max. permissible input voltage without destruction $ 30 V; 75V for 1 ms max. and duty ratio 1:10
Interference suppression
– with common-mode interference > 80 dB (f = 0 to 50 kHz)
– with differential-modeinterference > 40 dB (Vnoise v 0.1 UN)
Error, referred to
– rated value $ 5 x 10–4
– linearity $ 1 unit
– tolerance $ 3 units
– temperature error 0.6 x 10–4/K
Voltage test to VDE 0160 Between inputs and ground point, and between 2 inputs;
tested at 500 V AC
Surge voltage test to IEC 255-4 Between inputs and L-: Vp = 1kV; 1.2/50 µs

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Analog Input/Output Modules

Setting the Data When using the 4 to 20 mA inputs, you can select data representation of 0 to
Format for the 4 to 1023 bits or 256 to 1279 bits by pressing the appropriate switch. You can
20 mA Range choose different data formats for all four input channels.
When the voltage or 0 to 20 mA inputs are used, the relevant switches remain
at the opposite settings.
Labeling of the switch on the module cover:

channel 0
range 4...20 mA channel 1
0...1023 channel 2
channel 3

1)

channel 3
range 4...20 mA
256...1279 channel 2
otherranges channel 1
0...1023 channel 0

1) It is advisable to mark the selected switch setting in these fields.

Connecting Transducers are connected to the analog input module via shielded cables of
Transducers up to 200 m in length. When they are laid separately from power system
cables, distances of up to 500 m are possible.
An arbitrary mixture of voltage sensor, current sensor, two-wire and
four-wire transducers can be connected. For two-wire transducers, there are
four short-circuit protected supply terminals at the front connector.

Caution
! To use two-wire transducers, the reference potential (common input) of these
channels must be connected to L-. This defeats the isolation between the
channels and the supply voltage L+/L-.

Note that the bus interface of the module is activated with 24 V via enable
lines F+ and F- at the front connector.

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 Analog Input/Output Modules

Front Connector
Assignments

Range Range Range Range Range Front Strip Block Diagram

0–1V 0–10V 0–20mA 4–20mA 4–20mA of the Module
(2–wiretransd.) (4–wire ransd.) Pin

F+ F+ F+ F+ F+ t
F– F– F– F– 1
F–
L+ L+ L+ L+ 2 L+
L+
3 +
+ 4
4 +10V
+ 5
MU 5 +1V
+ 6 + 6 +

Data Memory
6 Common
– 6
– 7 – 7 Common
– 7 – 7 7
8 0–10V
9 0–20mA
10 4–20mA
11
12 +
+ 13
13 +10V
+ 14
MU 14
+ 15 + 15 + +1V

Data Memory
15 Common
– 15
– 16 – 16 – 16 16 – 16 Common
17 0–10V
18 0–20mA
19 4–20mA
L– L– L– L– L– 20 L–
21
22 Ch.0 Ch.1 Ch.2 Ch.3

Busansteuerung
23
+ 15V
4x –
+ 25 24 +
25 +10V
+ 26
MU 26 +1V
Data Memory
+ 27 + 27 +
– 27 27 Common
– – 28 – – 28 Common
28 28 28
29 0–10V
30 0–20mA
31 4–20mA
32
33 +
+ 34
34 +10V
+ 35
MU 35
36 + +1V
Data Memory

+ 36 +
36 Common
– 36
– 37 – 37 – 37 – 37 Common
37
38 0–10V
39 0–20mA
40 4–20mA
41
42
+
– 15V

Figure 9-17 Front Connector Assignments, Sensor Connection, Range Selection

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Analog Input/Output Modules

9.5 The 465 Analog Input Module

9.5.1 Design

The modules are designed as plug-in PCBs for central controllers and
expansion units with a backplane connector and with a blade connector to
accept a plug-in front connector. You can directly connect the process signal
lines to the front connector, which is available separately, with screw or
crimp terminals.

Addressing Situated on each module is an addressing switch with six rockers to set the
Switch, Mode module address. Analog input modules also have two switches on the side
Switches with eight rockers for setting the mode, and receptacles for range cards.
The modules are protected by covers on both sides.

Addressing Switch

Blade Connector

Front Connector

Mode Switch

Figure 9-18 Analog Input Module

9.5.2 Function of the Enable Input

The 465 module has an enable circuit. You can use the enable inputs to
switch off individual modules whilst the PLC is in operation. This means
that:
The module can no longer be addressed by the user program.
Modules which are switched off can be removed or inserted during operation.
If this is not necessary, operate the module with the enable input switched
off.

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 Analog Input/Output Modules

Enable Input The enable circuit requires an external 24 V voltage at enable inputs F+/F- in
the front connector. If there is no voltage at F+/F-, the modules will not
acknowledge.
When the front connector is swivelled away from the front strip of the
module, the supply of power to the enable input is interrupted, i.e. the
module is switched off and can no longer be addressed by the user program: a
timeout (QVZ) occurs in the CC.

Switching Off the The 465 module additionally offers the facility for changing the enable
Enable Input mode. The module has a jumper accessible from above in the vicinity of the
addressing switch.

Enable Jumper

Figure 9-19 Enable Input and Enable Jumper

Jumper inserted: Enable input (F+/F-) active (factory setting)

Jumper open: Enable input (F+/F-) switched off
Examples of functioning of the enable inputs:
To switch off individual subprocesses, i.e. outputs of various modules can
be operated from a common load supply and yet activated separately.
The load voltage of individual modules can be monitored without
additional circuitry. Any reactions to failure of the load voltage can be
programmed in the QVZ (timeout) organization block.

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Analog Input/Output Modules

Configuring You must observe the following when configuring systems:

Switching on At the latest 100 ms after power-up of the PLC, the voltage
must be present at the enable inputs of the I/O modules.
Switching off When the PLC has been switched off, the voltage at the
enable inputs of the I/O modules must still be present as
long as the internal 5 V voltage is present.

Switching off the You should observe the following instructions for switching off CCs and
CC equipment for supplying power to the enable inputs.

Separate or When there is a need to switch off the load power supply separately without
Common affecting the enabling of modules, there are the following possibilities for
Shutdown of the producing the enable voltage. These exist even when the load power supply
CC/EU and Load is used without an additional capacitor and common shutdown.
Power Supply
230 V AC supply for CC/EU and load power supply

b) Battery
a)

I/O Modules c)
–951

F+
CC/EU
L+

Power Supply L+
230 V AC

Load Power Supply 24V

Supply for the enable inputs from:

a) 6ES5 951-4LB11 load power supply
b) Battery
c) Terminals for 24 V on the front plate of the power supply

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 Analog Input/Output Modules

24 V supply for CC/EU and I/Os

a) Battery

I/O Modules b)

F+
CC/EU
L+

Power Supply 24V L+

24 V DC

Supply for the enable inputs from:

a) Battery
b) Terminals for 24 V on the front plate of the power supply

Common Proper functioning is ensured if the 24 V load power supply has an output
Shutdown of the capacitance of at least 4700 mF per 10 A of load current. Other units which
CC/EU and Load do not meet this condition can be adapted to this requirement by connecting a
Power Supply with 10000 mF / 40 V capacitor in parallel.
a 230 V AC Supply

I/O Modules

F+
CC/EU

L+

Power Supply
230 V AC 10000µF/40V

Load Power Supply 24V

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9.5.3 Special Features of the 465 Analog Input Module

The 465 analog input module executes integrating processing of the digital
input signals; periodic system interference is thus suppressed.
You can adapt the process signals, according to the application, to the input
level of the analog-to-digital converter of the module with plug-in range
cards (resistor dividers or shunt resistors).

Broken Wire To monitor the sensors connected to the inputs, you can use the
Signal 6ES5 498-1AA11 range card (through-connection card) to implement the
“broken wire detection” mode. You can activate broken wire detection for 8
or 16 inputs in 16-channel operation, and for 4 or 8 inputs in 8-channel
operation.
Each time the input value is about to be encoded, a constant current is briefly
(1.6 ms) switched to the input terminals and the resultant current is checked
for a limit value. If a digital voltmeter is used to measure the signal at the
input, these current pulses may appear to indicate fluctuation of the signal.
The encoded value, however, is not affected.

Switching the If these apparent fluctuations of the signal are disturbing, e.g. during startup,
Tripping Current to you can switch the tripping current to the inactive state on the 465 analog
the Inactive State input modules: apply + 24 V to pin 24 of the front connector, and 0 V to L-.
You must additionally set the mode switch to “without broken wire
detection.”
In the event of open-circuit of the sensor or its line, the voltage exceeds the
limit and a broken wire is indicated (bit 1 in data byte 1). The
analog-to-digital converter encodes the value 0.
A broken wire signal is only useful when the 6ES5 498-1AA11
through-connection card is used. With all other measurement cards, a broken
wire signal will result in incorrect reactions. Further details relating to the
broken wire signal can be found in Section 9.5.10.

Measuring Range If the measuring range is exceeded, the overflow bit (bit 20 of the low byte)
Exceeded is set.

Cyclic Sampling/ You have a choice of the cyclic sampling and selective sampling modes.
Selective Sampling
In the cyclic sampling mode, the module continuously encodes all measured
values. The digitized measured values are stored under the channel-related
address on the module (the high byte under this address, and the low byte
under the next higher address). The measured values can then be read by the
module at any time without waiting. When you operate the module in this
mode, you can set a module address from 0 to 255.

System Manual
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In the selective sampling mode, a measured value is encoded on the central

initiative of the CPU. At the start of conversion, the module must be
addressed once with a write operation (T PW) by the user program. An active
bit (T = 1) is set during encoding.
With the transition to T = 0, the measured value becomes valid. With
non-constant cycle times, there may be non-periodic measured value
aquisition. If you operate the module in this mode, you must set a module
address from 128 to 255. You can also use the address range from 0 to 127
for selective sampling after appropriate programming in DB 1 of the user
program.

Time-Controlled Another method is that of time-controlled program processing. With this

Program method, certain program segments (e.g. FB 13) are automatically inserted
Processing into program processing at the 100 ms rate by a time-
controlled block (OB 13). A constant timebase is thus achieved.

FB 13 SPRM-B LEN=22 ABS

SHEET 1
SEGMENT 1
NAME: SELSAMPL EXAMPLE OF SELECTIVE SAMPLING

0005 :
0006 :
0007 :L PW128 READ ANALOG VALUE
0008 :T FW128 IN TO AUX: FLAG 128
0009 :S F 129.2 SCAN ACTIVITY=1?
000A :JC = END IF = 1, JUMP TO END
000B :T FW10 IF = 0, MEASURED VALUE IN FW 10
000C :T PB128 INITIATE SAMPLING
000D END : (1ST VALUE INVALID AFTER START)
000E
000F :
0010 :BE

Function Block You can read analog values of analog input modules with a function block
from the “basic functions” package.

BASP (Output The BASP signal is not interpreted by the 460 analog input module.
Inhibit)

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Analog Input/Output Modules

9.5.4 Setting the Module Address

You set the module address on the addressing switch. This also establishes
the necessary assignments between user program and process connection.
The module address is the sum of the decimal significances of the switch
rockers in the On setting (Ĥ).
One data word = two data bytes is required to process an input. A module
with 8 inputs therefore reserves 16 byte addresses, and a module with 16
inputs or outputs reserves 32 byte addresses.

Labeling Field You can affix the adhesive label with the desired module address on a free
labeling field under the addressing switch.
The switch rockers to be set for the module address specified as a decimal
number (address bit ADB) are marked by dots on the label.

Press the individual rockers of the addressing switch downwards with a

ballpoint pen or similar object, but not a pencil.

On Setting
Addressing Switch
(Switch Pressed)

Free Field for Label with

Module Address and
Address (Decimal) marked Switch Settngs
16
128
64

Decimal Signification of
8
32

4
2
1

the Address Bit

ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

Address Bit

ADB0 and ADB1 are not assigned

ADB2 is not connected

Figure 9-20 Labeling of the Addressing Switch

The address under which the module is referenced by the STEP 5 program is
independent of the slot.

Start Address, For analog input and analog output modules (8 or 16 inputs) only the lowest
Subaddress address (start address) is set. Other addresses (subaddresses) are decoded on
the module.

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Note
The start address of the analog module must be a multiple of the double
channel number.
8 channels : 0, 16, 32, 48, ... 240
16 channels : 0, 32, 64, 96, ... 224

If one of the inputs or outputs (Channel 0 to 7 or 0 to 15) of a module is to be

addressed, the relevant subaddress must be specified in the program.
The subaddress of the input or output, based on the start address of the
module, is given by:
Start address + 2 x channel no. = subaddress
Example:
Analog input module with 8 or 16 inputs
The address is the sum of the significances set with the individual coding
switches.
160 = 128 + 32 = 27 + 25

On Setting
(Switch Pressed)

IB 160
16
128
64

8
32

1
2
ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

A module with 8 or 16 inputs (Channel 0 to 7 or 0 to 15) and start address

160 reserves the address range from
160 to address 160 + 7 x 2 = 174
160 to address 160 + 15 x 2 = 190
In this example, the next free address for another module is 176 or 192.
With the 465 analog input module, the size of the address range depends on
the number of channels set (8 or 16).
Addresses already assigned must not be set again.

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Analog Input/Output Modules

Addressing for However, analog input modules and analog output modules may be given the
Cyclic/Selective same address with cyclic sampling because they are distinguished by the user
Sampling program. This is not possible with selective sampling.
For cyclic sampling, you can address the module in the address range from 0
to 255, and for selective sampling from 128 to 255. For selective sampling,
you can also use the address range from 0 to 127 after appropriate
programming in DB 1 of the user program.
Example:
On an analog input module with start address 160 (IB 160 = input byte 160),
input channel 3 is to be scanned by the program.

Step Action
1 Affix the self-adhesive label with address 160 on the free field under the
addressing switch on the module. ADB 5 and ADB 7 are marked on the
label.
2 Press the appropriate rockers of the addressing switch down on the side
marked by a dot on the module cover. Set the other rockers to the opposite
setting. This way sets the start address of the module.
ADB 5 and ADB 7 results in 25 + 27 = 32 + 128 = 160
3 Enter the address 160 + 3 x 2 = 166 in the program for input channel 3.

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9.5.5 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched.
During operation, the front connector and module must not be removed or
inserted without the enable jumper or active enable circuit.

Install an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Insert the module at the desired slot in the subrack and push it back in the
guides.
3 Latch the module by rotating the locking pin by 90o at the lower end of
the module. It must no longer be possible to pull the module forwards.
4 Engage the front connector on the support pin of the module. The width
of the support pin also provides keying to prevent front connectors from
being fitted to the wrong modules (e.g. front connectors with 115/230 V
AC wiring cannot be plugged into analog modules).
5 Tighten the screw in the upper part of the front connector.

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Analog Input/Output Modules

Remove an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Slacken the screw in the upper part of the front connector. This causes the
front connector to be pressed out of the female connector of the module.
Contacts F+ and F- of the enable input at the upper end of the front con-
nector are thus opened first. If the enable input is active, power is removed
from the outputs and the module is isolated from the S5 bus.
3 Swing the front connector out and lift it away from the support pin of the
module.
4 Release the module by rotating the locking pin by 90o at the lower end of
the module. You can pull the module out of the subrack with a grip with
swivels outwards.

1 Module

Front
Connector

Support Mount
5
Support Pin
4
2
3

Figure 9-21 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Comply with VDE Specifications 0110 and 0160 to carry out the wiring of
supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules.
Detailed information on cabinet assembly, cabinet ventilation and protective
measures can be found in Chapter 3.

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9.5.6 Marking of Modules and Front Connectors

For the marking of modules and front connectors, labels are supplied with the
module and central controller; they are affixed as shown in Figure 9-5.

1 2 4 1 5 3

Figure 9-22 Marking and Labeling of Modules

1 Label with the module address under which the module is referenced by the STEP 5 program
2 Labeling strip with the product designation for the module; space to mark the module version
and label the channels
3 Label with module address and marking of the required settings for the addressing switch
4 Labeling strip for terminal designations or connection diagrams (strip in the cover of the
front connector)
5 Name plate

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Analog Input/Output Modules

9.5.7 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm

mounting width with crimp connection and 40 mm mounting width with
screw connection are available (screwdriver blade width: 3.5 mm, maximum
torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector. Ferrules
are not required for screw connections, because the screw terminals are
provided with wire protection.
When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal Connector Max. Cross-Section Connector for Mounting Width of Mod

T
Type T
Type N off
No. R t dV
Rated Voltage
lt l
ule
Signal or Supply Aux. Jumper
6ES 497- Contacts
Conductor in Connector
1)

Crimp con- -4UA12 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 20 mm Operation

nection with fan
-4UA22 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 40 mm
Operation
O ti
Screw con- -4UB12 42 0.5 to 2.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 40 mm
without fan
nection
ti
-4UB31 42 0.5 to 1.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 20 mm

1) To multiply the supply and 0 V ground terminals, and to connect the enable input
2) The crimp contacts must be ordered separately for these types of connector.

Caution
! Only extra-low voltage 60 V DC with safety separation from system voltage
may be used for the 24 V DC supply and for the 24 V DC input signals.
Safety separation can be implemented to the requirements of, amongst other
sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional
extra-low voltage with safety separation) or VDE 0805/EN 60950/IEC 950
(as safety extra-low voltage SELV) or VDE 0106 Part 101.

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9.5.8 Connecting a Compensating Box for Thermal E.M.F.

Measurement

If the room temperature fluctuations at the reference point (e.g. in the

terminal box) affect the measurement result and you do not wish to use a
thermostat, you can compensate for the effect of temperature on the reference
point with a compensating box. Between - 10 and + 70 oC, it compensates for
the change in thermal e.m.f. cause by temperature deviation (compensating
box, see Catalog MP 11). Ensure that the compensating box has thermal
contact with the terminals.
If the compensating box is aligned at 20 oC, this must be taken into account
in temperature evaluation (20 oC measuring point temperature = 0 mV).
Pins 22 and 23 are extended on analog input modules as an input for the
compensating voltage. You must select a common input loop for all inputs on
mode switch 2.
The compensating box must be connected in a floating circuit. The power
supply unit of the compensating box must have a grounded shield winding to
avoid AC system interference being picked up. A separate compensating box
with its special power supply unit is required for each analog input module.

Analog Input Module

Terminal Box
Thermocouple
M+ A
MUX
Range
M– Card for
4 Inputs
6ES5 498-
– -1AA11
#
Compen-
sating
Box
+ D
22–

23+

0 V Bus
Power =
Supply
for Com-
pensat-
ing Box ~

Figure 9-23 Connecting a Compensating Box

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Analog Input/Output Modules

9.5.9 Connecting Resistance Thermometers to the 465 Analog Input

Module

The relevant resistance thermometer is fed with a current of 2.5 mA (IC+/IC-)

by a constant current generator via a 6ES5 498-1AA11 card. The voltage at
the Pt 100 is picked off at measurement inputs M+ and M-.
If only inputs 0 to 3 are assigned to resistance thermometers, you can connect
other current and voltage sensors to inputs 4 to 7 by means of a coding key. If
you use the Pt 100 for measurement, you cannot utilize channels 12 to 15.
Channels 8 to 11 supply the resistance thermometers which are connected at
inputs 0 to 3.
Note that the mode of the module is set to the 500 mV voltage range.

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 Analog Input/Output Modules

465 Analog Input Module

Pt100 Card 1
– + M+

CH0 M–
A

2) Range
Card for
4 Inputs
2) 6ES5-498-
0...500mV -1AA11
#
CH3
1) D

Card 2 MUX
U/I
6ES5498-
CH4
-1AA11
U -1AA21
CM 2)
-1AA31
U
CM -1AA41
2)
-1AA51
-1AA61
2)
-1AA71
CH7
1)

I Card 3
const.
IC+ M+
I M–
C–

2) Range
Card for
4 Inputs
2) 6ES5-498-
-1AA11
I
2) const.
2.5mA

Card 4 +5V
Current Source for
2) Pt 100 Operation

2) Range
Card for
4 Inputs
2) 6ES5-498-
-1AA11
-1AA41
2) -1AA71

2)

Figure 9-24 Connecting a Pt 100

1) When cards 6ES5 498-1AA21, 6ES5 498-1AA31 or 6ES5 498-1AA61 are used, no broken wire signal may be activated for this
group of channels (CH4 to CH7).
2) If cards 6ES5 498-1AA41 or 6ES5 498-1AA71 are used, a short-circuit jumper is not required.

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9.5.10 Broken Wire Signal for Resistance Thermometers

An open-circuit in the lines to a resistance thermometer is indicated as

follows:

Broken Wire at Module Reaction, Encoded Value Error Bit E

M+ 0 1
M– 0 1
Pt 100 0 1
IC+ 0 1
IC– 0 1

If the mode “without broken wire signal” is selected on the module, an

open-circuit of the resistance thermometer is indicated with an overflow.
Unassigned channels can be used for voltage or current measurement if the
current flow outputs relating to the particular measuring channel are shorted
with a wire jumper. Without this jumper, the error bit would be set for this
channel and the value 0 would be encoded.

Broken Wire When set to “resistance thermometer,” switch 7 of mode switch I of the 465
Monitoring analog input module allows broken wire monitoring of the IC+ lines to the
resistance thermometer (Pt 100 constant current supply). In the event of
open-circuit of this line, the error bit is set as for the other lines.
At the “voltage/current” (mV/mA) setting, the IC+ lines are not monitored for
broken wire. (The error bit is not set for an open-circuit of this line.) You
should choose this switch setting if you exclusively measure voltages or
currents.

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9.5.11 Connecting Transducers

Two-wire transducer (short-circuit protected supply voltage via the range
card of the analog input module)
L+ L– Analog Input Module
M+

A
+ 4...20 mA MUX

– Range
Card for
4 Inputs
6ES5-498-
M– -1AA51
#

0 V Bus

Four-wire transducer (with separate supply voltage)

M+ Analog Input Module

230 V AC

+4...20 mA A
+ MUX
Range
– Card for
4 Inputs
6ES5-498-
-1AA71
M– #

Do not exceed max. permissible potential difference! 0 V Bus

Four-wire transducer with a two-wire transducer card

M+ L+ L– Analog Input Module
230 V AC

+ 0...20 mA A
MUX

–
Range
M– Card for
4 Inputs
6ES5-498-
#
-1AA71

L– (0 Vext) 0 V Bus

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9.5.12 Measured-Value Representation

Digital (rated input range $ 50 mV)

Measured-Value
Representation as
Two’s Complement

Units Input Volt- Byte 0 Byte 1

age iin mV
V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
212 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w4096 100.0 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 99.976 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 50.024 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 50.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 49.976 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 25.0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
1023 23.976 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.024 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated
–1 –0.024 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 range
–1023 – 24.976 1 1 1 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–1024 – 25.0 1 1 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2047 – 49.976 1 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–2048 – 50.0 1 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2049 – 50.024 1 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
–4095 – 99.976 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–4096 –100.0 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 1 Overflow

A = Active bit
E = Error bit
OV = Overflow bit

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Digital (rated input range $ 50 mV)

Measured-Value
Representation as
Value and Sign

Units Input Volt- Byte 0 Byte 1

age iin mV
V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w4096 100.0 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 99.976 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 50.024 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 50.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 49.976 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 25.0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
1023 23.976 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.024 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated
–0 0.0 1 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 range
–1 –0.024 1 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
–1023 – 24.976 1 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–1024 – 25.0 1 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2047 – 49.976 1 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–2048 – 50.0 1 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
–2049 – 50.024 1 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0 Overrange
–4095 – 99.976 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
–4096 –100.0 1 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow

A = Active bit
E = Error bit
OV = Overflow bit

Bit 212 is interpreted as the sign.

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Measured-Value The resolution with Pt 100 resistance thermometers is approximately 0.25 oC.
Representation for 1 ohm  10 units
Pt 100 Resistance
Thermometers

Units Resistance in Temper- Byte 0 Byte 1

ohms 1) ature in
oC 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
4096 400.0 – 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 1 Overflow
4095 399.90 – 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0 Overrange
2049 200.98 269.1 0 1 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
2048 200.0 266.5 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0
2047 199.90 266.0 0 0 1 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1024 100.00 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0 Rated range
1023 99.90 –0.2 0 0 0 1 1 1 1 1 1 1 1 1 1 0/1 0/1 0
1 0.098 – 0 0 0 0 0 0 0 0 0 0 0 0 1 0/1 0/1 0
0 0.0 – 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0/1 0

1) Resistance value PT 100

A = Active bit
E = Error bit
OV = Overflow bit
S = Sign

When Pt 100 resistance thermometers are connected, the maximum

temperature in the rated range is 266 oC. If it can be ensured that the
temperature does not exceed 850 oC, the input value may extend into the
overrange. The resolution is then 4095 units. Unused inputs can be utilized
for voltage measurements in the 500 mV range (see front connector
assignments).

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Measured-Value Measuring range 500 mV; card with 31.25 ohm shunt
Representation for (6ES5 498-1AA51/AA71)
Current Measuring
The 4 to 20 mA range is resolved to 2048 units at an interval of 512 to 2560.
Ranges from 4 to
If you require a representation from 0 to 2048, you must subtract 512 units by
20 mA
software. Please note the following:
A broken wire signal cannot be emitted.
Detection of the overrange can be achieved by scanning bits 29 and 211.
A broken wire can be detected with currents < 3 mA.

Current Limiting
If you short-circuit the positive and negative terminals of the transducer
when using the 6ES5 498-1AA51 range card (for a two-wire transducer),
the current is limited to about 28 mA. Until the thermal current limiting
circuit responds in the range card (about 3 s), a short-circuit current of
approximately 250 mA flows; this sets the overflow bit for this duration
at all channels.

Units Input Cur- Byte 0 Byte 1

rentt in
i mA
A
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
S 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
w 4096 w 32.000 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0 1 Overflow
4095 31.992 0 1 1 1 1 1 1 1 1 1 1 1 1 0/1 0 0 Overrange
3072 24.0 0 1 1 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Short-circuit with two-
3071 23.992 0 1 0 1 1 1 1 1 1 1 1 1 1 0/1 0 0 wire transducer
2561 20.008 0 1 0 1 0 0 0 0 0 0 0 0 1 0/1 0 0
2560 20.0 0 1 0 1 0 0 0 0 0 0 0 0 0 0/1 0 0
2048 16.0 0 1 0 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Rated range
512 4.0 0 0 0 1 0 0 0 0 0 0 0 0 0 0/1 0 0
511 3.992 0 0 0 0 1 1 1 1 1 1 1 1 1 0/1 0 0 Range
384 3.0 0 0 0 0 1 1 0 0 0 0 0 0 0 0/1 0 0 underflow
383 2.992 0 0 0 0 1 0 1 1 1 1 1 1 1 0/1 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0 0 Broken wire

A = Active bit
E = Error bit
OV = Overflow bit
S = Sign

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9.5.13 Technical Specifications

6ES5 465-4UA12 Analog Input Module

Rated input ranges with cards for every 4 channels

– 6ES5 498-1AA11 $ 50 mV/$500 mV/Pt 100
– 6ES5 498-1AA21 $1V
– 6ES5 498-1AA31 $ 10 V
– 6ES5 498-1AA41 $ 20 mA
– 6ES5 498-1AA51 4 to 20 mA for two-wire transducer
– 6ES5 498-1AA61 $5V
– 6ES5 498-1AA71 4 to 20 mA for four-wire transducer
Number of inputs 16 voltage/current inputs or
8 resistance inputs (Pt 100)
Measured-valuerepresentation 13 bits (two’s complement) or 12 bits + sign;
$ 2048 units in rated range;
512 to 2560 units for 4 to 20 mA
Measuring principle Integrating
Isolation No
Permissible potential difference between reference potentials $ 1 V max.
of sensors and the module (UCM) and between sensors (chan-
nels)
Power Supply
– digital section from system bus 5 V $ 5 %; 150 mA typical
– analog section from load voltage 24 V
– enabling for module F+/F- 24 V; approx. 5 mA
– tripping current L+ 24 V; approx. 5 mA
Constant current source for Pt 100 connection IC+/IC- 2.5 mA; TC = $ 5 x 10–5/K
Integration time 20 ms at 50 Hz; 16 2/3 ms at 60 Hz
Encoding time per measured value 60 ms at 50 Hz; 50 ms at 60 Hz
Cycle time for 8 measured values with 2048 units Approx. 0.48 s at 50 Hz
(max. delay time for measured-value acquisition) Approx. 0.48 s at 50 Hz
Input resistance (with card) for input ranges:
$50 mV/$500 mV/Pt 100 w 10 MW
$1 V 90 kW
$5 V/$10 V 50 kW
$20 mA 25 W
4 to 20 mA 31.25 W

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Measuring point-related error signal

– for overflow Yes
– for broken wire Yes, configurable
(at $ 50 mV, $ 500 mV and Pt 100)
Max. permissible input voltage without destruction $18 V; 75 V for 1 ms max. and duty ratio 1:20
Interference suppression for f = n x (50/60 Hz $1 %)
– with common-mode interference w 86 dB, but $1 V max.
– with differential-modeinterference w 40 dB, noise voltage amplitude
but 100 % max. of measuring range
referred to peak value
Error referred to rated value
– linearity $ 1 unit
– tolerance $ 1 unit
– polarity reversal error $ 1 unit
– temperature error 1 x 10 –4 /K
Error caused by cards with input range
$ 1 V/$ 5 V /$ 10 V 2 x 10 –3; TC = $ 10 x 10 –5 /K
$ 20 mA/4 to 20 mA 10 –3; TC = $ 5 x 10 –5 /K

Setting the Mode You select the desired mode of the analog input module by setting mode
switches I and II according to the following table.
Note that all the rockers of both mode switches marked with a dot must be
set, and some functions are defined by several rockers (e.g. 8- to 16-channel
operation, broken wire signal for 8 or 16 channels).
To activate the desired modes, press the rockers down on the side marked
with a dot.

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Mode Mode Switch I Mode Switch II

(Digital Section) (Digital Section)
Without reference point compensation

With reference point compensation

Measuring range
50 mV

500 mV; Pt 100

Current or
voltage measurement, 16 channels
Pt 100 in 4-wire circuit
8 channels
Current or
voltage measurement, 8 channels
Sampling
selective

cyclic
Line frequency
50 Hz

60 Hz
8 channels

16 channels
Two’s complement

Value and sign

Channels 4 ... 7 (with 8 channels)
Channels 8 ... 15 (with 16 channels)
with broken wire signal
Channels 0 ... 3 (with 8 channels)
Channels 0 ... 7 (with 16 channels)
Channels 0 ... 3 (with 8 channels)
Channels 0 ... 7 (with 16 channels)
without broken wire signal
Channels 4 ... 7 (with 8 channels)
Channels 8 ... 15 (with 16 channels)
mV/mA

Pt 100

x = Switch is not assigned, any switch setting

Ĥ = Switch setting

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Labeling of switches on the module cover:

voltage/current

with 8 channels channel 4–7

16 channels channel 8–15
broken wire
detection 8channels channel0–3
16channels channel0–7
resistance thermometer
two’s complement
16 channels ...mV/ ...mA
8 channels/resistance thermom.; mV/mA
50 mV
line frequency 50 CPS
without compensation
single scanning

1) I. 1) II.

cyclics canning with compensation

line frequency 60 CPS 500 mV/ ...mA/ resistance thermometer

16 channels mV; mA 8 channels ...mV/ ...mA/ resist. therm.

result and sign voltage/current

8 channels channel 0–3

with out
16 channels channel 0–7
broken wire
8 channels channel 4–7
detection
16 channels channel 8–15
resistance thermometer *

* consider instruction manual

1) It is advisable to mark the selected switch setting in these fields.

Inserting Range On one 465 analog input module, you can insert four cards for the connection
Cards of four inputs each, and secure them with a screw. There are voltage divider,
shunt and through-connection cards for the various ranges.

Range Card Type 6ES5 498–

-1AA11 -1AA21 -1AA31 -1AA41 -1AA51 -1AA61 -1AA71
M+ M+ M+ M+ M+ M+ M+
Circuit of the L+
cards 4x
L–
M– M– M– M– M– M– M–
Mode " 500 mV "1 V " 10 V " 20 mA 4...20mA "5V 4...20mA
500 mV/ mA Pt 100 2-wire trans. 4-wire trans.
Pt 100

" 50 mV (" 100 mV) (" 1 V) (" 2 mA) – (" 500 mV) –
Mode 50 mV

For a defined mode (50 mV or 500 mV), you can insert cards with different
ranges for every four inputs, e.g. for the 500 mV mode:
4 inputs, range $ 500 mV; 1 card 6ES5 498-1AA11
8 inputs, range $ 20 mV; 2 cards 6ES5 498-1AA41
Unused inputs must be short-circuited (with Pt 100 operation, this also
applies to the unused current outputs).
Note that the bus interface of the module is activated with 24 V via enable
lines F+ and F- at the front connector.

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Front Connector
Assignments

Voltage or current input Resistance thermometer

or connection of two-wire transducer

Connection of Front Strip Block Diagram Connection of Front Strip Block Diagram
Process Signal of the Module Process Signal of the Module
Lines Pin Lines Pin

F+ 1 F+ 1
t t
F– 2 2
F–
L+ 3 3
L+
4 4
+ CH.0 CH.0 5
1) – 5
Range Card 1

Range Card 1
6 6
+ CH.1 7
1) – 7
8 ADU 8 ADU
+ CH.2 9
1) – 9

Measuring Voltage Inputs

10 10
+ CH.3 11
1) – 11

13 13
+ CH.4 14
1) – 14
Range Card 2

Range Card 2
15 15
+ CH.5 16
1) – 16
Datenspeicher und S5–Busansteuerung

17 17
+ CH.6 18
1) – 18

Data Memory and S5 Bus Control

19 19
+ CH.7 20
1) – 20
I I trip
Comp.– 22 trip Comp.– 22
Comp.+ 23 Comp.+ 23
3)L+ 24 3) L+ 24
25 25
+ CH.0 26
1) – 26
Range Card 3

27
Range Card 3
27
+ CH.1 28
1) – 28
29 29
+ CH.2 30
1) – 30
Constant Power Supply

31 31
+ CH.3 32
1) – 32

34 34
+
MU – 35 CH.4 35
L+
2) 36
Range Card 4

+ 36 L–
MU – CH.5 37
6ES5 498–1AA51

37
Range Card 4

2) 38 38
MU + CH.6 39
– 39
2)
40 40
MU + CH.7 41
– 41
2)
L– 42 L– 42
0 Vgnd (L–) 0 Vgnd (L–)
CH.15

Figure 9-25 Front Connector Assignments

Two-wire transducers can only be connected in the 500 mV mode.

Connect L- to the central ground point (reference potential).
1) Observe permissible potential difference between sensor and reference potential of modules
or between sensors.
2) Two-wire transducer
3) Only required to switch off the tripping current without broken wire detection;
(0 V at common ground point with L-).

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9.6 The 466 Analog Input Module

9.6.1 Design
The module is designed as a plug-in PCB for central controllers and
expansion units with a backplane connector and with a blade connector to
accept a plug-in front connector. You can directly connect the process signal
lines to the front connector, which is available separately, with screw or
crimp terminals.

9.6.2 Special Features of the 466 Analog Input Module

The 466 analog input module processes the digital input signals by encoding
the instantaneous value; periodic system interference is therefore not
suppressed.

Measuring Range You select the measuring ranges with a switch setting for every four
channels.

9.6.3 Startup

Introduction The mode of the 466 analog input module must be set exclusively via
switches on the board. Figure 9-26 shows the designations and locations of
switches on the board.

Front

S8 S7 S5 S6

S1 S2 S9

Backplane Connector for S5 I/O Bus

Figure 9-26 Locations of Mode Switches on the 466 Analog Input Module

Note
The following 43-pin K-type front connectors are required:
6xx3 068 for crimp connection
6xx3 081 for srew connection

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Setting the Type of Measurement with respect to ground/differential measurement

Measurement The type of measurement (with respect to ground or differential
measurement) is set with switch S9. The switch settings relate to the
locations on the module shown in Figure 9-26:

Type of Measurement Switch Setting S9

1 9
ON
Measurement with respect to ground
OFF

1 9
ON
Differential measurement OFF

Current/Voltage If you have preset differential measurement on switch S9, two channel
Measurement for groups of four channels each are available. You can configure each channel
Individual Channel group separately for current or voltage measurement.
Groups You set this with switches S5, S6, S7 and S8. Switches S5 and S7 allow three
settings (left, midpoint and right); switches S6 and S8 allow two settings (left
and right). The switch settings relate to the locations on the module shown in
Figure 9-26:

Setting the current/voltage measurement for channel group I

Channel Group I Switch S5 Switch S6

(Channels 0 to 3)
Current

Voltage

Setting the current/voltage measurement for channel group II

Channel Group II Switch S7 Switch S8

(Channels 4 to 7)
Current

Voltage

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If you have preset measurement with respect to ground on switch S9, four
channel groups of four channels each are available. You can configure each
channel group separately for current or voltage measurement.
This is set with switches S5, S6, S7 and S8. Switches S5 and S7 allow three
settings (left, midpoint and right); switches S6 and S8 allow two settings (left
and right). The switch settings relate to the locations on the module shown in
Figure 9-26:
Setting the current/voltage measurement for channel group I

Channel Group I Switch S5

(Channels 0 to 3)
Current

Voltage

Setting the current/voltage measurement for channel group II

Channel Group II Switch S7

(Channels 4 to 7)
Current

Voltage

Setting the current/voltage measurement for channel group III

Channel Group III Switch S6

(Channels 8 to 11)
Current

Voltage

Setting the current/voltage measurement for channel group IV

Channel Group IV Switch S8

(Channels 12 to 15)
Current

Voltage

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Setting the The 466 analog input module has 12 measuring ranges. For each channel
Measuring Range group (i.e. for every four inputs), you can select a range which is independent
of the other channel groups. You set the ranges with switches S1 and S2.

S1 S2
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
ON
OFF

Channel Group I Channel Group II Channel Group III Channel Group IV

(Channel 0...3) (Channel 4...7) (Channel 8...11) (Channel 12...15)

Figure 9-27 Assignment of Channel Groups to Switches S1 / S2

The same measuring range coding is valid for each channel group. Given in
the following table, therefore, is the setting of the measuring range for only
one channel group. The switch settings relate to the locations on the module
shown in Figure 9-27.
Note that you must additionally set the type of measurement
(current/voltage) with switches S5 to S8!
Setting the measuring range for a channel group (4 channels each)

Range Switch Setting

0 - 20 mA ON
OFF

0 - 1.25 V

0 - 2.5 V

0-5V

0 - 10 V

$ 20 mA

$ 1.25 V

$ 2.5 V

$5V

$ 10 V

4 - 20 mA

1-5V

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Setting the Data Set the data format by means of switch S9:
Format
Two’s complement
12-bit two’s complement representation
(Range: 0 ... 4095 units (unipolar) or - 2048 ... + 2047 units (bipolar))
Value and sign
11-bit value and 1 sign bit
(Range: 0 ... 4095 units (unipolar) or - 2048 ... + 2047 units (bipolar))
Binary
12-bit binary number
(Range: 0 ... 4095 units for both unipolar and bipolar measured variables)

Data Format S9 Switch Setting

1 9
ON
Two’s complement
OFF

1
9
Value and sign ON
OFF
1 9
ON
Binary
OFF

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Setting the Module Before starting up, first indicate via switch S9 whether you intend to use the
Start Address 466 analog input module with a central controller (CC) or with an expansion
unit (EU).
Refer to the following table:
Setting the module start address (1)

466-3LA11 Module S9 Switch Setting

1 9
Operation in CC ON
OFF

1 9

Operation in EU with IM 300/312 ON

OFF

1 9
Operation in EU with IM 301/310 ON
OFF

1 9
Operation in EU with IM 304/314 ON
OFF

1 9
Operation in EU with IM 307/317 ON
OFF

1 9

Operation in EU with IM 308/318 ON

OFF

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Set the exact start address of the module as shown in the following table.
Setting the module start address (2)

Module Address S9 Switch Setting

1 9
ON
000
OFF

1 9
ON
016*
OFF

1 9
ON
032
OFF

1 9
ON
048* OFF

1 9
ON
064
OFF

1 9
ON
080* OFF

1 9
ON
096
OFF

1 9
ON
112*
OFF

1 9
ON
128
OFF

1 9
ON
144* OFF

1 9
ON
160
OFF

1 9
ON
176* OFF

1 9
ON
192
OFF

1 9
ON
208* OFF

1 9
ON
224 OFF

1 9
ON
240*
OFF

* can only be set for differential measurement

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9.6.4 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched.
During operation, the front connector and module must not be removed or
inserted without the enable jumper or active enable circuit.

Install an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Insert the module at the desired slot in the subrack and push it back in the
guides.
3 Latch the module by rotating the locking pin by 90o at the lower end of
the module. It must no longer be possible to pull the module forwards.
4 Engage the front connector on the support pin of the module. The width
of the support pin also provides keying to prevent front connectors from
being fitted to the wrong modules (e.g. front connectors with 115/230 V
AC wiring cannot be plugged into analog modules).
5 Tighten the screw in the upper part of the front connector.

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Remove an analog input/output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Slacken the screw in the upper part of the front connector. This causes the
front connector to be pressed out of the female connector of the module.
Contacts F+ and F- of the enable input at the upper end of the front
connector are thus opened first. If the enable input is active, power is
removed from the outputs and the module is isolated from the S5 bus.
3 Swing the front connector out and lift it away from the support pin of the
module.
4 Release the module by rotating the locking pin by 90o at the lower end of
the module. You can pull the module out of the subrack with a grip with
swivels outwards.

1 Module

Front
Connector

Support Mount
5
Support Pin
4
2
3

Figure 9-28 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Comply with VDE Specifications 0110 and 0160 to carry out the wiring of
supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules.
Detailed information on cabinet assembly, cabinet ventilation and protective
measures can be found in Chapter 3.

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9.6.5 Marking of Modules and Front Connectors

For the marking of modules and front connectors, labels are supplied with the
module and central controller; they are affixed as shown in Figure 9-29.

1 2 4 1 5 3

Figure 9-29 Marking and Labeling of Modules

1 Label with the module address under which the module is referenced by the STEP 5 program
2 Labeling strip with the product designation for the module; space to mark the module version
and label the channels
3 Label with module address and marking of the required settings for the addressing switch
4 Labeling strip for terminal designations or connection diagrams (strip in the cover of the
front connector)
5 Name plate

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9.6.6 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm

mounting width with crimp connection and 40 mm mounting width with
screw connection are available (screwdriver blade width: 3.5 mm, maximum
torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector. Ferrules
are not required for screw connections, because the screw terminals are
provided with wire protection.
When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Caution
! Only extra-low voltage 60 V DC with safety separation from system voltage
may be used for the 24 V DC supply and for the 24 V DC input signals.
Safety separation can be implemented to the requirements of, amongst other
sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional
extra-low voltage with safety separation) or VDE 0805/EN 60950/IEC 950
(as safety extra-low voltage SELV) or VDE 0106 Part 101.

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9.6.7 Connecting Sensors to the 466 Analog Input Module

The connections for the 466 analog input module depend on the type of
measurement (with respect to ground or differential measurement).

Measurement with For measurement with respect to ground, all signal lines have a common
Respect to Ground reference point. This is achieved by connecting all the M inputs in use to one
point. Since this type of measurement is susceptible to interference, the
signal sources should be arranged in the vicinity of the 466 analog input
module.
16 channels are available; unused channels must be shorted (jumper between
M+ and M-).
The channels have the following designations on the module:
Channel 0: M0 +
M0 –
Channel 1: M1 +
M1 –
: :
Channel 15 M15 +
M15 –
Channels are arranged in groups of four, for which you can set separate
measuring ranges:
Channel group I: Channels 0 to 3
Channel group II: Channels 4 to 7
Channel group III: Channels 8 to 11
Channel group IV: Channels 12 to 15

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The following figure shows the connection of sensors to the module. For
measurement with respect to ground, all the M- connection points are
interconnected internally on the module.

Analog Input Module

M+

U E2 +
M+
– MUX

U E1 +
M–
–

U ISO

0 V Bus

U E1/2: Input Voltage

U ISO: Potential Difference

: Equipotential; this potential is established by the sensor reference potential

(external reference potential)

Figure 9-30 Connecting Sensors to the 466 Analog Input Module (Measurement with Respect to Ground)

Differential The differential measurement is a method of compensating for interference

Measurement on the line. Each signal source is assigned its own signal reference line. The
differential measurement between signal line and signal reference line thus
compensates for the interference acting on both lines.
You must also short-circuit the unused channels with this measuring method
(jumper between M+ and M-).
Differential measurement is required:
if the sensors are at different potentials;
if various signal sources are not close to each other;
if there is a need to measure signals with high precision;
and when a high level of interference is expected.

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The channels have the following designations on the module:

Channel 0: M0 +
M0 –
Channel 1: M1 +
M1 –
: :
Channel 7: M7 +
M7 –
Channels are arranged in groups of four, for which you can set separate
measuring ranges:
Channel group I: Channels 0 to 3
Channel group II: Channels 4 to 7
The following figure shows the connection of sensors to the module.

You must observe the following condition:

UE + UCM < 12 V
(i.e. the sum of the set voltage range and common-mode voltage must be less
than 12 V; current measuring ranges correspond to a voltage of 2.5 V).

Analog Input Module

M+

U +
E2 M–
–
+ MUX
M+
U –
CM2
U +
E1 M–
–

+
U 0 Vext
CM1 –

U
ISO
0 V Bus

U E1/2: Input Voltage

U CM1/2: Common-Mode Voltage

U ISO: Potential Difference

: Equipotential; this potential is established by the sensor reference potential

(external reference potential)

Figure 9-31 Connecting Sensors to the 466 Analog Input Module (DifferentialMeasurement)

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9.6.8 Measured-Value Representation

Measured-Value After conversion, the digital result is stored in the module’s RAM.
Representation The bits in both bytes have the following significance:
with Various
Ranges
Byte 0 Byte 1

7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0

12 11 10 9 8 7 6 5 4 3 2 1 0
2 2 2 2 2 2 2 2 2 2 2 2 2 A E OV

Binary Value

Active Bit; is not assigned

Error Bit; is set in case of internal error;

in this case, the measured value
is not valid

Overflow Bit; (is set if the range limit is reached)

Figure 9-32 Digital Result Representation

Bits 0 to 2 in byte 1 have no influence on the measured value, they only give
information on measured-value representation. The following table describes
their significance in more detail.

Bit Significance Signal Status Meaning of the

Signal Status

OV Overflow bit 1 Range exceeded *

E Error bit 1 Broken wire
A Active bit 0 Not used
* A measuring-point overflow does not affect the overflow bits of the other channels;
i.e. the measured values of unaffected channels are correct and can be evaluated.

Please note the following special features:

Bit 7 in the high byte (212) indicates the sign for bipolar measured-value
representation (two’s complement and value with sign).
Bit 6 in the high byte (211) is not used in the case of bipolar
measured-value representation (no overrange).
The 466 module has no overrange.
Selective sampling is not possible with the 466 module
(active bit is not set).

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Shown in the following tables is the representation of the measured value as

a function of the selected measuring range.

Measuring Range
0-20 mA, 0-5 V and
0-10 V; Unipolar

Units Measured Measured Measured Byte 0 * Byte 1 *

Value in V Value in V Value in V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
(0 - 5 V) (0 - 10 V) (0 - 20 mA)
212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
4095 4.9988 9.9976 19.9951 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1
4094 4.9976 9.9951 19.9902 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : : :
0001 0.0012 0.0024 0.00488 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0.00000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
* Same representation for the data formats:
two’s complement, value and sign, binary representation.

A = Active bit
E = Error bit
O = Overflow bit

Two’s
Complement;
Measuring Range
5 V, 20 mA
and 10 V;
Bipolar

Units Measured Measured Measured Byte 0 * Byte 1 *

Value in V Value in V Value in V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($5 V) ($10 V) ($20 mA)
212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
2047 4.9976 9.9951 19.9902 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1
2046 4.9951 9.9902 19.9804 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : : :
0001 0.0024 0.0049 0.00976 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0.00000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–0001 –0.0024 –0.0049 –0.00976 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
: : : : : :
–2047 –4.9976 –9.9951 –19.9902 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
–2048 –5.0000 –10.000 –20.0000 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1

A = Active bit
E = Error bit
O = Overflow bit

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Value and sign; measuring range $ 5 V, $ 20 mA and $ 10 V; bipolar

Units Measured Measured Measured Byte 0 * Byte 1 *

Value in V Value in V Value in V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($5 V) ($10 V) ($20 mA)
212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
2047 4.9976 9.9951 19.9902 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1
2046 4.9951 9.9902 19.9804 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : : :
0001 0.0024 0.0049 0.00976 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0.00000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–0001 –0.0024 –0.0049 –0.00976 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
: : : : : :
–2047 –4.9976 –9.9951 –19.9902 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0
–2048 –5.0000 –10.000 –20.0000 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1

A = Active bit
E = Error bit
O = Overflow bit

Binary; measuring range $ 5 V, $ 20 mA and $ 10 V; bipolar

Units Measured Measured Measured Byte 0 * Byte 1 *

Value in V Value in V Value in V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($5 V) ($10 V) ($20 mA)
212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
4095 4.9976 9.9951 19.9902 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1
4094 4.9951 9.9902 19.9804 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : : :
2049 0.0024 0.0049 0.00976 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
2048 0.0000 0.0000 0.00000 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2047 –0.0024 –0.0049 –0.00976 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0
: : : : : :
0001 –4.9976 –9.9951 –19.9902 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 –5.0000 –10.000 –20.0000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

A = Active bit
E = Error bit
O = Overflow bit

Measuring range 0-1.25 V and 0-2.5 V; unipolar

Units Measured Measured Byte 0 Byte 1

Value in V Value in V
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
(0 - 1.25 V) (0 - 2.5 V)
212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
4095 1.2497 2.4994 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1
4094 1.2494 2.4988 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : :
0001 0.0003 0.0006 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
* Same representation for the data formats:
two’s complement, value and sign, binary representation.

A = Active bit
E = Error bit
O = Overflow bit

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Two’s complement; measuring range $ 1.25 V and $ 2.5 V; bipolar

Units Measured Measured Byte 0 Byte 1

Value in V Value in V 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($ 1.25 V) ($ 2.5 V) 212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
2047 1.2494 2.4988 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1
2046 1.2488 2.4975 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : :
0001 0.0006 0.0012 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–0001 –0.0006 –0.0012 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0
: : : : :
–2047 –1.2494 –2.4988 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
–2048 –1.2500 –2.5000 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1

A = Active bit
E = Error bit
O = Overflow bit
Value and sign; measuring range $ 1.25 V and $ 2.5 V; bipolar

Units Measured Measured Byte 0 Byte 1

Value in V Value in V 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($ 1.25 V) ($ 2.5 V) 212 211 210 29 28 27 26 25 24 23 22 21 20 A E O
2047 1.2494 2.4988 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 1
2046 1.2488 2.4975 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : :
0001 0.0006 0.0012 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 0.0000 0.0000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–0001 –0.0006 –0.0012 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
: : : : :
–2047 –1.2494 –2.4988 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0
–2048 –1.2500 –2.5000 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1

A = Active bit
E = Error bit
O = Overflow bit
Binary; measuring range $ 1.25 V and $ 2.5 V; bipolar

Units Measured Measured Byte 0 Byte 1

Value in V Value in V 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
($ 1.25 V) ($ 2.5 V) 212 211 210 29 28 27 26 25 24 23 22 21 20 A E OV
4095 1.2494 2.4988 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1
4094 1.2488 2.4975 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0
: : : : :
2049 0.0006 0.0012 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
2048 0.0000 0.0000 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2047 –0.0006 –0.0012 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0
: : : :
0001 –1.2494 –2.4988 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0000 –1.2500 –2.5000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

* Same representation for the data formats:

two’s complement, value and sign, binary representation.

A = Active bit
E = Error bit
O = Overflow bit

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9.6.9 Technical Specifications

6ES5 466-3LA11 Analog Input Modules

Input ranges 0-20 mA; 4-20 mA; "20 mA;

0-1.25 V; 0-2.5 V; 0-5 V;
1-5 V; 0-10 V;
"1.25 V; "2.5 V; "5 V; "10 V
Number of inputs 16 single or 8 differential inputs in groups of
4 or 2 channels (selectable)
voltage or current measurement
Measuring principle Instantaneous value encoding
Conversion time 25 ms typical (per channel)
Isolation Yes
Permissible isolation between sensor ref. potential and 25 V AC/60 V DC max.
central ground point
Supply voltage
internal + 5 V +/- 5 %
external None
Current consumption, internal 0.7 A typical
Encoding time per measured value 250 ms
Duration of cyclic sampling
(cycle time)
for 8 measured values 2 ms max.
for 16 measured values 4 ms max.
Input resistance
voltage measuring range w 10 M W
current measuring range 125 W
Type of circuit for sensors Two-wire circuit
Digital representation of the input signal Selectable, following types of representation:
– 12-bit two’s complement
– 11-bit value with sign
– 12-bit binary
Max. permissible input voltage without destruction $ 30 V max. (static) or
$ 75 V (pulse for 1 ms max. and duty ratio 1:20)
Interference voltage suppression common-mode interfer- 70 dB min.
ence (Vpp = 1 V)
Basic error limits
– voltage ranges except for 0-1.25 V; $1.25 V 0.1 %
– current ranges and 0-1.25 V; $1.25 V 0.2 %

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Operational error limit (0 oC ... 60 oC)

– voltage ranges except for 0-1.25 V, $1.25 V 0.2 %
– current ranges and 0-1.25 V, $1.25 V 0.2 %
Error signal
for overflow Yes (overflow bit set)
for internal error Yes (error bit (= E bit) set)
Single error
linearity 0.02 %
tolerance 0.05 %
polarity reversal error 0.05 %
Temperature error 0.005 %/K
Insulation rating To VDE 0160
Line length
- shielded 200 m max.
Front connector 43-way
Power dissipation of module 3.5 W typical
Weight Approx. 0.4 kg
Rated insulation voltage
(between channels and ground point) tested at 500 V

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Front Connector
Assignments

Voltage-to-ground measurement Differential measurement

Front Strip Front Strip

Pin Pin
1 1
2 M0+ 2 M0+
3 M0– 3 Mext
4 M8– 4 Mext
5 M8+ 5 M0–
6 6
7 M1+ 7 M1+
8 M1– 8 Mext
9 M9– 9 Mext
10 M9+ 10
M1–
11 11
12 M2+ 12 M2+
13 M2– 13 Mext
14 M10– 14 Mext
15 M10+ 15
M2–
16 16
17 M3+ 17
M3+
18 M3– 18 Mext
19 M11– 19
Mext
20 M11+ 20 M3–
21 21
22 22
23 23
24 M4+ 24 M4+
25 M4– 25 Mext
26 M12– 26 Mext
27 M12+ 27 M4–
28 28
29 M5+ 29 M5+
30 M5– 30 Mext
31 M13– 31 Mext
32 M13+ 32 M5–
33 33
34 M6+ 34 M6+
35 M6– 35 Mext
36 M14– 36 Mext
37 M14+ 37 M6–
38 38
39 M7+ 39 M7+
40 M7– 40 Mext
41 M15– 41 Mext
42 M15+ 42
M7–

Figure 9-33 Front Connector Assignments

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9.7 The 470 Analog Output Module

9.7.1 Design

The module is designed as a plug-in PCB for central controllers and

expansion units with a backplane connector and with a blade connector to
accept a plug-in front connector. You can directly connect the process signal
lines to the front connector, which is available separately, with screw or
crimp terminals.

Addressing Situated on each module is an addressing switch with six rockers to set the
Switch, Mode module address.
Switches
The modules are protected by covers on both sides.

Addressing Switch
Blade Connector

Front Connector

Figure 9-34 Analog Output Module

9.7.2 Function of the Enable Input

The 470 module has an enable circuit. You can use the enable inputs to
switch off individual modules whilst the PLC is in operation. This means
that:
The module can no longer be addressed by the user program.
On analog output modules, the last analog value to be output is retained.
Modules which are switched off can be removed or inserted during operation.
If this is not necessary, operate the module with the enable input switched
off.

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Enable Input The enable circuit requires an external 24 V voltage at enable inputs F+/F- in
the front connector. If there is no voltage at F+/F-, the modules will not
acknowledge.
When the front connector is swivelled away from the front strip of the
module, the supply of power to the enable input is interrupted, i.e. the
module is switched off and can no longer be addressed by the user program: a
timeout (QVZ) occurs in the CC.

Switching Off the The -4Ux12-type modules additionally offer the facility for changing the
Enable Input enable mode. The modules have a jumper accessible from above in the
vicinity of the addressing switch.

Enable Jumper

Figure 9-35 Enable Input and Enable Jumper

Jumper inserted: Enable input (F+/F-) active (factory setting)

Jumper open: Enable input (F+/F-) switched off
Examples of functioning of the enable inputs:
To switch off individual subprocesses, i.e. outputs of various modules can
be operated from a common load supply and yet activated separately.
The load voltage of individual modules can be monitored without
additional circuitry. Any reactions to failure of the load voltage can be
programmed in the QVZ (timeout) organization block.

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Configuring You must observe the following when configuring systems:

Switching on At the latest 100 ms after power-up of the PLC, the voltage
must be present at the enable inputs of the I/O modules.
Switching off When the PLC has been switched off, the voltage at the
enable inputs of the I/O modules must still be present as
long as the internal 5 V voltage is present.
However, you must ensure that the 24 V load supply for
analog output modules is switched off together with the
PLC. If the supply voltage is still present at the modules
and the PLC is switched off, the output values can drift.
(The analog holding elements for the outputs will no lon-
ger be refreshed with the current value, because there is no
5 V supply to the modules from the bus.)

Switching Off the You should observe the following instructions for switching off CCs and
CC equipment for supplying power to the enable inputs.

Separate or When there is a need to switch off the load power supply separately without
Common affecting the enabling of modules, there are the following possibilities for
Shutdown of the producing the enable voltage. These exist even when the load power supply
CC/EU and Load is used without an additional capacitor and common shutdown.
Power Supply
230 V AC supply for CC/EU and load power supply

b)
a) Battery
c)
–951 I/O Modules

F+
CC/EU
L+

Power Supply L+
230 V AC

Load Power Supply 24V

Supply for the enable inputs from:

a) 6ES5 951-4LB11 load power supply
b) Battery
c) Terminals for 24 V on the front plate of the power supply

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24 V supply for CC/EU and I/Os

a)
Battery

I/O Modules b)

F+
CC/EU
L+

Power Supply 24V L+

24 V DC

Supply for the enable inputs from:

a) Battery
b) Terminals for 24 V on the front plate of the power supply

Common Proper functioning is ensured if the 24 V load power supply has an output
Shutdown of the capacitance of at least 4700 mF per 10 A of load current. Other units which
CC/EU and Load do not meet this condition can be adapted to this requirement by connecting a
Power Supply with 10000 mF / 40 V capacitor in parallel.
a 230 V AC Supply

I/O Modules

F+
CC/EU

L+

Power Supply
230 V AC 10000µF/
40V

Load Power Supply 24V

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9.7.3 Special Features of the 470 Analog Output Module

BASP (Output The BASP signal is not interpreted by the 470 analog output module. Once
Inhibit) output, a value is retained.

Function Block You can output analog values to the process via analog output modules with a
function block from the “basic functions” package.

9.7.4 Setting the Module Address

You set the module address on the addressing switch. This also establishes
the necessary assignments between user program and process connection.
The module address is the sum of the decimal significances of the switch
rockers in the On setting (Ĥ).
One data word = two data bytes is required to process an input or an output.
A module with 8 inputs or outputs reserves 16 byte addresses.

Labeling Field You can affix the adhesive label with the desired module address on a free
labeling field under the addressing switch.
The switch rockers to be set for the module address specified as a decimal
number (address bit ADB) are marked by dots on the label.
Press the individual rockers of the addressing switch downwards with a
ballpoint pen or similar object, but not a pencil.

On Setting
Addressing Switch
(Switch Pressed)

Free Field for Label with

Module Address and
Address (Decimal) marked Switch Settngs
16
128
64

Decimal Signification of
8
32

4
2
1

the Address Bit

ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

Address Bit

ADB0 and ADB1 are not assigned

ADB2 is not connected

Figure 9-36 Labeling of the Addressing Switch

The address under which the module is referenced by the STEP 5 program is
independent of the slot.

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Start Address, For analog output modules ( 8 outputs) only the lowest address (start address)
Subaddress is set. Other addresses (subaddresses) are decoded on the module.

Note
The start address of an analog module must be a multiple of the double
channel number.
8 channels : 0, 16, 32, 48, ... 240

If one of the outputs (Channel 0 to 7) of a module is to be addressed, the

relevant subaddress must be specified in the program.
The subaddress of the output, based on the start address of the module, is
given by:
Start address + 2 x channel no. = subaddress
Example:
Analog output module with 8 outputs
The address is the sum of the significances set with the individual coding
switches.
160 = 128 + 32 = 27 + 25

On Setting
(Switch Pressed)

IB 160
16
128
64

8
32

1
2
ADB7
ADB6
ADB5
ADB4
ADB3

ADB0
ADB2
ADB1

A module with 8 outputs (Channel 0 to 7) and start address 160 reserves the
address range from
160 to address 160 + 7 x 2 = 174
In this example, the next free address for another module is 176.
Addresses already assigned must not be set again.

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Addressing for However, analog input modules and analog output modules may be given the
Cyclic/Selective same address with cyclic sampling because they are distinguished by the user
Sampling program. This is not possible with selective sampling.
For cyclic sampling, you can address the module in the address range from 0
to 255, and for selective sampling from 128 to 255. For selective sampling,
you can also use the address range from 0 to 127 after appropriate
programming in DB 1 of the user program.
Example:
On an analog output module with 8 outputs with start address 144 (IB 144 =
output byte 144), output channel 7 is to be scanned by the program.

Step Action
1 Affix the self-adhesive label with address 160 on the free field under the
addressing switch on the module. ADB 4 and ADB 7 are marked on the
label.
2 Press the appropriate rockers of the addressing switch down on the side
marked by a dot on the module cover. Set the other rockers to the opposite
setting. This sets the start address of the module.
ADB 4 and ADB 7 results in 24 + 27 = 16 + 128 = 144
3 Enter the address 144 + 7 x 2 = 158 in the program for input channel 7.

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9.7.5 Removing and Inserting Modules

Warning
! When removing and inserting the front connector during operation,
hazardous voltages of more than 25 V AC or 60 V DC may be present at the
module pins. When this is the case at the front connector, live modules may
only be replaced by electrical specialists or trained personnel in such a way
that the module pins are not touched.
During operation, the front connector and module must not be removed or
inserted without the enable jumper or active enable circuit.

Install an analog output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Insert the module at the desired slot in the subrack and push it back in the
guides.
3 Latch the module by rotating the locking pin by 90o at the lower end of
the module. It must no longer be possible to pull the module forwards.
4 Engage the front connector on the support pin of the module.
The width of the support pin also provides keying to prevent front con-
nectors from being fitted to the wrong modules (e.g. front connectors with
115/230 V AC wiring cannot be plugged into analog modules).
5 Tighten the screw in the upper part of the front connector.

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Remove an analog output module as follows:

Step Action
1 Release the upper locking bar on the subrack and swivel it upwards and
out.
2 Slacken the screw in the upper part of the front connector. This causes the
front connector to be pressed out of the female connector of the module.
Contacts F+ and F- of the enable input at the upper end of the front con-
nector are thus opened first. If the enable input is active, power is removed
from the outputs and the module is isolated from the S5 bus.
3 Swing the front connector out and lift it away from the support pin of the
module.
4 Release the module by rotating the locking pin by 90o at the lower end of
the module. You can pull the module out of the subrack with a grip with
swivels outwards.

1 Module
Front
Connector

Support Mount
5
Support Pin
4
2
3

Figure 9-37 Module with Front Connector

1 Screw
2 Locking pin
3 Support mount
4 Support pin
5 Grip
6 Backplane connector

Comply with VDE Specifications 0110 and 0160 to carry out the wiring of
supply and signal lines which are to be connected to the programmable
controllers and front connectors of the modules.
Detailed information on cabinet assembly, cabinet ventilation and protective
measures can be found in Chapter 3.

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9.7.6 Marking of Modules and Front Connectors

For the marking of modules and front connectors, labels are supplied with the
module and central controller; they are affixed as shown in Figure 9-38.

1 2 4 1 5 3

Figure 9-38 Marking and Labeling of Modules

1 Label with the module address under which the module is referenced by the STEP 5 program
2 Labeling strip with the product designation for the module; space to mark the module version
and label the channels
3 Label with module address and marking of the required settings for the addressing switch
4 Labeling strip for terminal designations or connection diagrams (strip in the cover of the
front connector)
5 Name plate

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9.7.7 Connecting the Signal Lines

For connection of the signal lines, front connectors for 20 and 40 mm

mounting width with crimp connection and 40 mm mounting width with
screw connection are available (screwdriver blade width: 3.5 mm, maximum
torque: 0.8 Nm).
Use stranded conductor to facilitate handling of the front connector. Ferrules
are not required for screw connections, because the screw terminals are
provided with wire protection.
When the crimp contact is inserted in the plastic body of the front connector,
a click can clearly be heard. This indicates that the contact is engaged. For
jumpering or to correct the wiring, you can remove the contacts with a
releasing tool (see ordering information) without having to pull out the front
connector.
Ferrules are not required for screw connections, because the screw terminals
are provided with wire protection. You can use ferrules of 7 mm in length to
DIN 46228. The maximum terminal area is 2 x 2.5 mm2.

Terminal Connector Max. Cross-Section Connector for Mounting Width of

T
Type T
Type N off
No. R t dV
Rated Voltage
lt M d l
Module
Signal or Supply Aux. Jumper
6ES 497- Contacts
Conductor in Connector
1)

Crimp con- -4UA12 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 20 mm Operation

nection with fan
-4UA22 2) 42 0.5 mm 2 0.5 mm 2 5 to 60 V DC 40 mm
Operation
O ti
Screw con- -4UB12 42 0.5 to 2.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 40 mm
without fan
nection
ti
-4UB31 42 0.5 to 1.5 mm 2 0.5 to 1.0 mm 2 5 to 60 V DC 20 mm

1) To multiply the supply and 0 V ground terminals, and to connect the enable input
2) The crimp contacts must be ordered separately for these types of connector.

Caution
! Only extra-low voltage 60 V DC with safety separation from system voltage
may be used for the 24 V DC supply and for the 24 V DC input signals.
Safety separation can be implemented to the requirements of, amongst other
sources, VDE 0100 Part 410/HD 384-4-41/IEC 364-4-41 (as functional
extra-low voltage with safety separation) or VDE 0805/EN 60950/IEC 950
(as safety extra-low voltage SELV) or VDE 0106 Part 101.

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9.7.8 Connecting Loads to the 470 Analog Output Module

The voltage at the load is measured at a high resistance via the sensor lines
(S+/S-) of voltage output QV, so that voltage drops on the load lines do not
falsify the load voltages. Lines S+(x) and S-(x) should therefore be directly
connected to the load (four-wire circuit). The voltage drops on the lines from
QV(x) to the load and from the load to MANA must not exceed 3 V.

QV(x)

S+(x)
+
Load (Voltage)
S – (x) –

QI (x) I
+ Load (Current)

–
MANA

Figure 9-39 Connecting Loads

QV(x) Voltage output, voltage on Channels 0 to 7

QI(x) Current output, current on Channels 0 to 7
S+(x) Sensor line (+) for Channels 0 to 7
S- (x) Sensor line (-) for Channels 0 to 7
MANA Ground terminal for the analog section

Connecting Loads When current and voltage outputs are used on the 470-4UA/-4UC... analog
to Current and output modules, connect the loads as follows:
Voltage Outputs
QV0 QV1 QV2 QV3 QV4
Jumper Jumper
S+0 S+1 S+2 S+3 S+4

+ + +

– – –
S–0 S–1 S–2 S–3 S–4

_
QI0 QI1 QI2 QI3 QI4
+ + + +

– – – – Jumper Jumper
M
ANA

M M
ANA ANA
Current Not Current
Output and Not Voltage
Only Output

Figure 9-40 Connecting Loads

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If, with voltage outputs, an excessively great voltage drop must be expected
on the lines to the load, you must route the sensor lines S+(x) and S-(x) to the
load.
When voltage outputs are not used, the S+(x) sensor lines in the front
connector must be connected to the corresponding voltage output terminals
(QV(x)) with wire jumpers. The S-(x) sensor lines must be connected to
MANA with wire jumpers.
You must also insert the same jumpers if only current outputs are used.
Unused current outputs may remain open.
The maximum load for the current outputs including line resistance, must not
exceed 300 ohms.

Connecting Loads The voltage outputs of the 470 analog output module are wired as follows:
to Voltage Outputs

QV0 QV1 QV2 QV3

Jumper
S+0 S+1 S+2 S+3
+
+ +

– – –
S–0 S–1 S–2 S–3

Jumper

M M
ANA ANA

No Load at QV3

Figure 9-41 Connecting Loads

Four-Wire Circuit The S+(x) and S-(x) sensor lines must be routed to the load (four-wire
circuit) if the voltage drop on the lines to the load is not negligible. The
common connection for the voltage outputs is MANA. If the voltage drop on
lines to the load is negligible, you can connect S+(x) to QV(x) and S-(x) to
MANA in the front connector.
When voltage outputs are unused, you must insert jumpers in the front
connector, e.g. QV(3) to S+(3) and S-(3) to MANA for unused voltage output
3 (see previous section).

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9.7.9 Measured-Value Representation

Digital
Measured-Value
Representation as
Two’s Complement

Units Output Voltage or Current of the Byte 0 Byte 1

470 Analog Output Module
-4UA/B12 -4UA12 -4UC12 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
211 210 29 28 27 26 25 24 23 22 21 20 x x x x
1280 12.5 V 25.0 mA 6.0 V 24.0 mA 0 1 0 1 0 0 0 0 0 0 0 0 Overrange
1025 10.0098 V 20.0195mA 5.004 V 20.016 mA 0 1 0 0 0 0 0 0 0 0 0 1
1024 10.0 V 20.0 mA 5.0 V 20.0 mA 0 1 0 0 0 0 0 0 0 0 0 0
1023 9.99 V 19.98 mA 4.995 V 19.98 mA 0 0 1 1 1 1 1 1 1 1 1 1
512 5.0 V 10.0 mA 3.0 V 12.0 mA 0 0 1 0 0 0 0 0 0 0 0 0
256 2.5 V 5.0 mA 2.0 V 8.0 mA 0 0 0 1 0 0 0 0 0 0 0 0
128 1.25 V 2.5 mA 1.5 V 6.0 mA 0 0 0 0 1 0 0 0 0 0 0 0
64 0.625 V 1.25 mA 1.25 V 5.0 mA 0 0 0 0 0 1 0 0 0 0 0 0
1 9.8 mV 19.5 mA 1.004 V 4.016 mA 0 0 0 0 0 0 0 0 0 0 0 1 Rated Range
0 0V 0 mA 1.0 V 4.0 mA 0 0 0 0 0 0 0 0 0 0 0 0
–1 – 9.8 mV 0 mA 0.996 V 3.984 mA 1 1 1 1 1 1 1 1 1 1 1 1
– 64 – 0.625 V 0 mA 0.75 V 3.0 mA 1 1 1 1 1 1 0 0 0 0 0 0
– 128 – 1.25 V 0 mA 0.5 V 2.0 mA 1 1 1 1 1 0 0 0 0 0 0 0
– 256 – 2.5 V 0 mA 0V 0 mA 1 1 1 1 0 0 0 0 0 0 0 0
– 512 – 5.0 V 0 mA –1V 0 mA 1 1 1 0 0 0 0 0 0 0 0 0
–1024 – 10.0 V 0 mA – 3.0 V 0 mA 1 1 0 0 0 0 0 0 0 0 0 0
–10.0098V 0 mA – 3.004V0 mA 1 0 1 1 1 1 1 1 1 1 1 1 Overrange
–1025 –12.5 V 0 mA – 5.0 V 0 mA 1 0 1 1 0 0 0 0 0 0 0 0
–1280

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9.7.10 Technical Specifications

6ES5 470-4UA12, 6ES5 470-4UB12 and 6ES5 470-4UC12 Analog Output

Modules

Rated output ranges

– 6ES5 470-4UA12 0 to $10 V and 0 to 20 mA parallel for $1024 units
– 6ES5 470-4UB12 $10 V for $1024 units
– 6ES5 470-4UC12 1 to 5 V and 4 to 20 mA parallel for 0 to 1024 units

Number of outputs 8 voltage and current outputs each,

no-load and short-circuit-proof
Isolation Yes 8 outputs with respect to Mext , M and L+/L–
Measured value representation 12-bit (two’s complement)
Linearity in the range of $1024 units $ 2 LSB = $ 0.2 %
Operational error limits (0 to 60 oC) $ 0.6 %
Temperature coefficient for voltage and current outputs 1 x 10–4/K
Permissible overrange Approx. 25 % ($ 1024 to $ 1272 units)
Fault current at voltage output Approx. 25 mA
No-load voltage at current output Approx. 18 V
Load impedance
– at voltage output w 3.3 kW
– at current output v 300 W
Delay between data transfer and analog value output v 5ms
to > 99%
Capacitive load including line capacity 100 nF max.
for -4UA12 from version 03 and
for -4UB12 and -4UC12 from version 04: 1 mF max.
Permissible voltage drop on voltage output lines $ 0.3 V at maximum output voltage
Power supply
– Digital section from system bus 5 V $ 5 %; approx. 250 mA
– Analog section from load voltage 24 V; 200 to 400 mA
– Enabling for module, F+/F- 24 V; approx. 7 mA
Permissible potential difference between reference poten-
tial of the load and housing (UCM) 25 V AC / 60 V DC max.
Voltage test to VDE 0160 Between outputs and housing
tested at 500 V AC
Surge voltage test to IEC 255-4 Between outputs and L–: Vp = 1 kV; 1,2/50 ms

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9-112 C79000-G8576-C199-06
 Analog Input/Output Modules

Front Connector
Assignments

470-4UB 470-4UA
470-4UC

Connection of Front Strip Block Diagram Connection of Front Strip Block Diagram
Process Signal of the Module Process Signal of the Module
Lines Pin Lines Pin
F+ 1 1
t F+ t
F– 2 2
F–
L+ 3 3
L+
v 4 v 4
QV0 U QV0 U
CH.0 5 CH.0
S+0 5 S+0
6 6
S–0 S–0
7 I 7
DAU QI0 I DAU
v 8 8
QV1 U v QV1 U
CH.1 9 CH.1
S+1 9 S+1
10 # #
S–1 10 S–1
11 11
I QI1 I
12 12
v 13 v
QV2 U 13 QV2 U
CH.2 14 S+2 CH.2
14 S+2
15 15
S–2 S–2
16 16 I
I QI2
Data Mamory and S5 Bus Control

Data Mamory and S5 Bus Control

v 17 v 17
QV3 U QV3 U
CH.3 18 S+3 CH.3
18 S+3
19 19
S–3 S–3
20 I 20 I
QI3
L– 21 L– 21
22 22
23 23
24
25 24
v QV4 U v 25 QV4 U
CH.4 26 CH.4
26
27 S+4 S+4
S–4 27 S–4
28 I 28 QI4 I
29 v U
v QV5 U 29 QV5
CH.5 30 CH.5
30
31 S+5 S+5
S–5 31 S–5
32 I 32 I
33 QI5
33
34 v 34
v QV6 U QV6 U
CH.6 35
CH.6 35
36 S+6 36
S+6
S–6 S–6
37 37 I
I QI6
v 38 38
QV7 U v QV7 U
CH.7 39 CH.7
39 S+7
40 S+7 40
S–7 S–7
41 41
I QI7 I
42 42
M M
ANA ANA

Figure 9-42 Front Connector Assignments

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C79000-G8576-C199-06 9-113
Analog Input/Output Modules

System Manual
9-114 C79000-G8576-C199-06
Monitoring Module 10
This chapter describes the installation, the wiring and the operation of the
monitoring module 6ES5 313-3AA12.

Chapter Section Description Page

Overview 10.1 Application 10-2
10.2 Installation 10-6
10.3 Operation 10-8
10.4 Technical Specifications 10-14
10.5 Address Table 10-16

System Manual
C79000-G8576-C199-06 10-1
Monitoring Module

10.1 Application

The monitoring module can be used in the expansion units of the

programmable controllers S5-115U, S5-135U and S5-155U.
The module monitors the data bus, the address bus and the control signals
MEMW/, MEMR/ and RDY/. Faults are displayed via four red LEDs on the
front panel. A group signal is output at the same time via a floating contact.
Following a fault, the module can be reset by means of the RESET key on
the front panel or the RESET input (see Section 10.2.3).

10.1.1 Design

The monitoring module is designed as a plug-in PCB in double Euroformat

with a 32-pin backplane connector for the S5 bus.
A connector for the relay contact and RESET input as well as one green
LED, four red LEDs and a RESET key are located on the front panel.

RUN 8 7 65 4 3 2 1
Operation (green LED)
OFF
8 7 654 3 2 1 ON S1
BASP

Bus
Command output inhibit (red LED) OFF

S5
8 7 654 3 2 1
R/W ON OFF
Control signal fault (red LED) S2
ADB ON
PESP

500ms
250ms
125ms
QVZ

Address bus fault (red LED)

1s

DB 876543 21
Data bus fault (red LED) OFF
ON S3

8 7 654 3 2 1
OFF
RESET key S4
ON
X4
4
1
8
2
64
32
128

16

1
Relay contact
RESET input
6

Figure 10-1 Location of the Coding Switches

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10-2 C79000-G8576-C199-06
 Monitoring Module

10.1.2 Mode of Operation

10.1.3 Block Diagram

Address bus

Address Address Presel- Address Address

comparison comparison ection comparison Address comparison
comparison
S1 S2 of time S3 S4

Daten Read and Time Time Time

Bit
ausgeben compare moni- moni- moni-
inversion data toring toring toring
S5 Bus

w1
DB
Data bus
MEMR
Control signal
ADB
MEMW
RDY monitoring
R/W
w1

CPKL S

w1 R
Edge

BASP

X4/4 RESET input RUN

X4/3

X4/5 L+ (24V) X4/2

internal +5V
X4/6 L– internal 0V X4/1
Relay contact

Figure 10-2 Block Diagram

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C79000-G8576-C199-06 10-3
Monitoring Module

10.1.4 Fault Detection

From an address which has been set at switch S1, the data (55H or AAH) is
read by the CPU from the monitoring module. This data is to be written back
by the CPU to the address set at switch S2. The module inverts the accurate
incoming data bit by bit (from 55H to AAH or vice versa) which is read
again in the next cycle from the address set at S1.

Data Bus Faults If the data which has been set on the monitoring module is not returned
within the set monitoring time, the module signals a data bus fault.
Detectable faults
Interruptions of the data lines, short circuits to ground and + 5V, short
circuits between adjacent data lines, e.g. DB0-DB1, DB1-DB2 etc.
Non-detectable faults
Short circuits between even data lines DB0-DB2-DB4-DB6 and between odd
data lines DB1-DB3-DB5-DB7.

Address Bus The addresses which have been set at switches S3 and S4 are only “listened
Faults to” by the monitoring module, i.e. they do not output an acknowledgement
signal (RDY/) and are not active on the data bus. If one or both addresses are
not accessed again within the monitoring time, the monitoring module
signals an address bus fault.
Detectable / non-detectable faults
The same as for the data bus, if the inverse addresses 85 (55H) and 170
(AAH) have been set at the addressing switches S3 and S4 of all monitoring
modules.

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10-4 C79000-G8576-C199-06
 Monitoring Module

Control Line A control line fault (R/W) occurs if

Faults
– the write signal (MEMW/) and the read signal (MEMR/) are active
simultaneously,
– the acknowledgement signal (RDY/) is active without a (MEMW/) or
(MEMR/) signal and
– the address line ’peripheral memory’ (PESP’) has not changed from
status “1” to “0.”
Evaluation of the control signal (PESP’) can be turned off with the S5/7
switch. If the module is used in a programmable controller into which only
I/O modules may be inserted (i.e. no memory modules or CPs), this switch
must always be turned off. In this configuration, only I/O accesses to the bus
are performed and the PESP‘ signal always has the status “1.” It should also
be turned off when using the IM 301, IM 302 1), IM 304 and IM 308
interface modules for expansion units since a permanent PESP‘ signal can be
applied to them.

BASP If a command output inhibit (BASP) is active, the “BASP” LED is lit.

Messages If one or more faults occur, the corresponding LEDs are lit, the relay contact
commutes and the module no longer acknowledges with the RDY/ signal.
This timeout can be suppressed by opening the S5/8 switch.

10.1.5 Resetting

There are several ways of resetting the module:

– CPKL/ signal = “1” (when the PLC is switched on);
– Trailing edge of the BASP signal (during startup of the PLC or
following return of the load voltage);
– Applying 24 V to the front connector X4 between connections 4
(RESET input) and 6 (L-);
– Linking connections 4 (RESET input) and 5 (L+) with connector X4.

1) In the S5-115U, the monitoring module cannot be used together with the IM 302 / 311 link.

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C79000-G8576-C199-06 10-5
Monitoring Module

10.2 Installation

10.2.1 Possible Configurations

3 11 19 27 35 43 51 59 67 75 83 91 99 107115 123 131 139147 155163

EU 187
EU 186
EU 185
EU 184
EU 183
EU 182

PS 0 1 2 3 4 5 6 7 IM Recommended slots
ER 2 Possible slots
ER 3

10.2.2 Removing and Inserting

The module is pulled out by holding the handles and gently lifting and
lowering while pulling towards you. The monitoring module may only be
removed or inserted if the expansion unit is switched off.

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10-6 C79000-G8576-C199-06
 Monitoring Module

10.2.3 Connecting the RESET Input

RESET input (floating) with external 24-V supply

1

2 Relay contact
3
L+ 4 RESET input
5
L+ (24V)
L– 6
L–

RESET input (floating) with internal 24-V suppy

1

2
Relay contact
3
4
RESET input
5
L+ (24V)
6
L–

10.2.4 Switch Positions of the Relay Contact

Contact not actuated (idle) or fault Contact actuated (operational)

1 1
2 2
3 3
4 4
5 5
6 6

Contact 1-3 closed Contact 1-2 closed

10.2.5 Installation Guidelines

The module is to be wired according to the VDE regulations 0100, 0110 and
0160.
Detailed information on power supply, cabinet design, cabinet ventilation,
cabinet wiring and protective measures can be found in Chapter 3.

System Manual
C79000-G8576-C199-06 10-7
Monitoring Module

10.3 Operation

Switch S1 (Read) The addresses set at these switches are acknowledged by the monitoring
and S2 (Write) module with RDY/ and are therefore not to be used again for inputs and
outputs in this programmable controller (double addressing is not allowed).

Switch S3 (Listen) No acknowledgement signal (RDY/) is returned by the monitoring module to

and S4 (Listen) the addresses set the switches S3 and S4. These addresses must be accessed
by the programmable controller as input or output addresses. This means that
they must be occupied by I/O modules or by one monitoring module at
switches S1 and S2. These modules must have been inserted into the last
expansion unit.
To achieve optimum address bus monitoring, inverse addresses should be
used [e.g. 85 (55H) 2) and 170 (AAH)]. It is advisable to make sure that the
setting of switches S3 and S4 is the same on all monitoring modules used.
The setting of switches S1and S2 as well S3 and S4 should be the same on
the monitoring module in the last expansion unit.

Input address Output address can be ac- Acknowl-

Switch can be accessed cessed using MEMW/ edged by
using MEMR/ (WRITE) module with
(READ) RDY/
S1 * *
S2 * *
S3 * *
S4 * *

1) Select addresses 213 (D5H) and 170 (AAH) when using the module in the S5-115U.
For exceptions refer to page 10 - 13.

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10-8 C79000-G8576-C199-06
 Monitoring Module

Example:

Expansion units EU183U

3rd monitoring module 313
EU184U
EU187U in the last expansion unit

1st MM 2nd MM
313 313

IM 312

IM 312
MM 313

MM 313
IM 312

MM 313

IM 312
IM 312

IM 312

IM 312
IM 312
IM 312

IM 312

IM 312
IM 312

IM 300

IM 300

IM 301 IM 310 IM 310

Central IM 304 IM 314 IM 314
controllers CC 115U IM 308 IM 318 IM 318
CC 135U
CC 155U EU183U
EU185U

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C79000-G8576-C199-06 10-9
Monitoring Module

10.3.1 Addressing

Example 1 S5-130K, S5-135U or S5-155U

1st MM 2nd MM 3rd MM in the

last EU
S1 e.g. 127 (7FH) 3) e.g. 126 (7EH) 3) 85 (55H) 4)

S2 e.g. 127 (7FH) 3) e.g. 126 (7EH) 3) 170 (AAH) 4)

S3 85 (55H) 5) 85 (55H) 5) 85 (55H) 5)

S4 170 (AAH) 5) 170 (AAH) 5) 170 (AAH) 5)

User program in OB 1 or FB 0

without S5-DOS with S5-DOS

L EB 127 L PY 127

T AB 127 T PY 127

L EB 126 L PY 126

T AB 126 T PY 126

L EB 85 L PY 85

T PB 170 T PY 170

BE BE

3) Possible addresses 0 (00H) to 255 (FFH)

4) To achieve optimum fault detection, set the inverse addresses 85 (55H) and 170 (AAH) at S1 and S2.

5) Since the addresses of the monitoring module switches S3 and S4 are not acknowledged, this must be done by the
monitoring module contained in the last expansion unit (the most remote from the central controller). The addresses
85 (55H) or 170 (AAH) of this monitoring module must be coded at switches S1 or S2, respectively.
These addresses may no longer be occupied for I/O tasks.

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10-10 C79000-G8576-C199-06
 Monitoring Module

Example 2 S5-115U

S1 e.g. 128 (80H) 6) e.g. 129 (81H) 6) 213 (D5H) 6)

S2 e.g. 128 (80H) 6) e.g. 129 (81H) 6) 170 (AAH) 6)

S3 213 (D5H) 7) 213 (D5H) 7)8) 213 (D5H) 7)8)

8)

S4 170 (AAH) 7) 170 (AAH) 7) 170 (AAH) 7)

User program in OB 1 or FB 0

without S5-DOS with S5-DOS

L PB 128 L PY 128

T PB 128 T PY 128

L PB 129 L PY 129

T PB 129 T PY 129

L PB 213 8) L PY 213 8)

T PB 170 T PY 170

BE BE

6) When using the monitoring module in the S5-115U, always select addresses > 127 since that is the only way to address
byte to byte.

7) To achieve maximum fault detection, select inverse addresses > 127, e.g. 213 (D5H) and 170 (AAH). In this combination,
the address bit ADB 7 is not monitored.

8) If ADB 7 is also to be monitored, the address 84/85 (54H/55H) in the last expansion unit must be occupied by an input or
output module and cyclically accessed by the user program. Set address 85 (55H) in place of 213 (D5H) at switch S3 of all
monitoring modules. Select any address between 128 (80H) and 255 (FFH) for switch S1 of the monitoring module in the
last expansion unit. As an alternative, you may access the address at S1 of the monitoring module in the last expansion unit via
direct access (without process image) using L PB 85 or L PY 85. Then, the addresses 84 and 85 (54H) and (55H) in the process
image may no longer be used by other inputs. The address at S3 of all monitoring modules is then also to be set to 85 (55H).

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C79000-G8576-C199-06 10-11
Monitoring Module

10.3.2 Setting the Address Switches S1, S2, S3, S4

The addresses are set as one-byte addresses as in the case of I/O modules.

8 7 6 5 4 3 2 1

OFF

ON

ADB 0 Significance 1
ADB 1 Significance 2
ADB 2 Significance 4
ADB 3 Significance 8
ADB 4 Significance 16
ADB 5 Significance 32
ADB 6 Significance 64
ADB 7 Significance 128

The significance of the rockers pressed down to ON at the switches must be

added.

Example Address 85 is to be set.

rockers to be pressed down to ON Significance

1 (ADB 0) 1

3 (ADB 2) 4

5 (ADB 4) 16

7 (ADB 6) 64
85

8 7 6 5 4 3 2 1

OFF

ON

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10-12 C79000-G8576-C199-06
 Monitoring Module

10.3.3 Setting the Switch S5

8 7 6 5 4 3 2 1

OFF

ON

ON: RDY/ is suppressed in case of fault

OFF: RDY/ is also output in case of fault
When BASP is active (“1” signal)
RDY/ is always output

ON: PESP‘ monitoring on

1s
500ms
Monitoring time 250ms
125ms

Select the monitoring time (between 125 ms and 1 s) by switching one of the
switches S5/1 to S5/4 to ON. If none of the four switches S5/1 to S5/4 is in
the ON position, for safety reasons the monitoring time has been set to 1 s.
If serial interface modules and the link between IM 304 and IM 314 are used,
the PESP‘ monitoring is to be switched off (see Section 10.1.4: Control line
faults).
Should the acknowledgement signal (RDY/) not be suppressed in the event of
a fault, the switch S5/8 must be in the OFF position.
When a BASP signal is active, the RDY/ signal will always be output.

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C79000-G8576-C199-06 10-13
Monitoring Module

10.4 Technical Specifications

Power supply

Supply voltage of the system bus +5V 5%

Power consumption 450 mA max.

RESET input

Rated input voltage 24 V DC

Electrical isolation Yes
Input voltage
for signal 0 –33 to + 5 V DC
or input open
for signal 1 +13 to + 33 V DC
Input current 8.5 mA
Permissible cable length 100 m max. unscreened

Sensor supply for RESET input

Rated output voltage 24 V DC

Electrical isolation Yes
Output voltage 20 to 30 V DC
short-circuit proof to L–
Output current 20 mA max.

Relay contact

Loading of contact with resistive load

or inductive load 30 V DC/ 1 A max.

Safety test

Voltage test acc. to VDE 0160

Relay contacts referred to internal 500 r.m.s.
RESET input referred to internal 500 r.m.s.
RESET input referred to relay contacts 500 r.m.s.
Surge voltage test acc. to IEC 255-4
Input referred to ground 1kV; 1.2/50 ms

Interference test

Radio interference test acc. to IEC 255-4 Input referred to ground: 1 kV; 1 MHz
Radio interference test acc. to IEC 65 (Co) 39 Input referred to ground: 1 kV; burst

Mechanical data

Dimensions (w x h x d) 20 mm x 243 mm x 193 mm

Weight 270g

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10-14 C79000-G8576-C199-06
 Monitoring Module

Ambient conditions

Operating temperature 0 to + 60 oC
Storage and transportation temperature –25 to + 70 oC
Relative humidity max. 95 % at 25 oC; no condensation
Operating altitude max. 3500 m above sea level
Vibration acc. to IEC 68-2-6 10 to 57 Hz, 0.15 mm; 57 to 500 Hz, 2 g
Shock acc. to IEC 68-2-27 12 shocks, half-sine; 15 g / 11 ms

Pin assignment of bus connector X1

b z
2 0V 5V
4 PESP’ –
6 ADB 0 CPKL/
8 ADB 1 MEMR/
10 ADB 2 MEMW/
12 ADB 3 RDY/
14 ADB 4 DB 0
16 ADB 5 DB 1
18 ADB 6 DB 2
20 ADB 7 DB 3
22 – DB 4
24 – DB 5
26 – DB 6
28 – DB 7
30 BASP –
32 0V 0V

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Monitoring Module

10.5 Address Table

Significance Byte address

1
2
4
8
128
64
32
16

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95

96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111

112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143

144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159

160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191

192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223

224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255

Switch position
ON
64
32
16

4
2
128

System Manual
10-16 C79000-G8576-C199-06
Connector Assignments 11
In this chapter are the connector assignments of the
backplane for the central controllers and expansion units
power supplies
backplane connectors and front connectors of the CPUs, coordinators
and IMs.

System Manual
C79000-G8576-C199-06 11-1
Connector Assignments

Connector assignments of the backplane of the S5-135U/155U CC

Slot 3, Slot 11, 27, 43, 59
COR, I/O CPU, CP, I/O, IP
Back- Pin Rin Row Pin Rin Row
plane
l N
No. N
No.
z b d z b d
conn. 1
2 P5 V M5 V 2 P5 V M5 V
4 PL PESP UBAT 4 PL PESP UBAT
6 RESET ADB 0 ADB 12 6 RESET ADB 0 ADB 12
8 MEMR ADB 1 ADB 13 8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB 14 10 MEMW ADB 2 ADB 14
12 RDY ADB 3 ADB 15 12 RDY ADB 3 ADB 15
14 DB 0 ADB 4 PL 14 DB 0 ADB 4 IRx 1)
16 DB 1 ADB 5 PL 16 DB 1 ADB 5
18 DB 2 ADB 6 PL 18 DB 2 ADB 6
20 DB 3 ADB 7 PL 20 DB 3 ADB 7
22 DB 4 ADB 8 PL 22 DB 4 ADB 8 IRE
24 DB 5 ADB 9 PL 24 DB 5 ADB 9 IRF
26 DB 6 ADB 10 PL 26 DB 6 ADB 10 IRG
28 DB 7 ADB 11 DSI 28 DB 7 ADB 11 DSI
30 BASP PL 30 PL BASP PL
32 PL M5 V BASPA 32 PL M5 V BASPA
Back- 2 P5 V M5 V PL 2 P5 V M5 V
plane 4 DB 12 DB 8 PL 4 DB 12 DB 8
conn. 2 6 DB 13 DB 9 PL 6 DB 13 DB 9 M5 V
8 DB 14 DB 10 PL 8 DB 14 DB 10
10 DB 15 DB 11 PL 10 DB 15 DB 11
12 PL PL 12 M5 V
14 NAU PL PL 14 NAU PL
16 BAU PL PL 16 BAU PL
18 RESETA PL PL 18 M5 V
20 PL PL 20 PL
22 PEU PL PL 22 PEU PL PL
24 GEP PL PL 24 GEP M5 V
26 PL PL 26 PL PL
28 PL PL PL 28 PL PL PL
30 M24 V 2) M24 V 2) M24 V 2) 30 M24 V 2) M24 V 2) M24 V 2)
32 P24 V M5 V P15 V 32 P24 V M5 V P15 V

Abbreviations:
IM-V – IM slot with additional power supply output
IRQ – Interrupt source (module which generates the interrupt)
PL – Private line
1) See pin designations for the interrupt signals
2) M24 V also serves as the return line for P15 V.

System Manual
11-2 C79000-G8576-C199-06
 Connector Assignments

Slot 19, 35, 51, 67, 75, 83, 91, 99 Slot 107, 115, 123, 131
CP, IP, I/O, IRQ CP, IP, I/O, IM307 (IRQ)
Back- Pin- Pin Row Pin- Pin Row
plane
l N
No. N
No.
z b d z b d
conn. 1
2 P5 V M5 V 2 P5 V M5 V
4 PL PESP UBAT 4 PL PESP UBAT
6 RESET ADB 0 ADB 12 6 RESET ADB 0 ADB 12
8 MEMR ADB 1 ADB 13 8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB 14 10 MEMW ADB 2 ADB 14
12 RDY ADB 3 ADB 15 12 RDY ADB 3 ADB 15
14 DB 0 ADB 4 IRA 14 DB 0 ADB 4 IRA
16 DB 1 ADB 5 IRB 16 DB 1 ADB 5 IRB
18 DB 2 ADB 6 IRC 18 DB 2 ADB 6 IRC
20 DB 3 ADB 7 IRD 20 DB 3 ADB 7 IRD
22 DB 4 ADB 8 IRE 22 DB 4 ADB 8 IRE
24 DB 5 ADB 9 IRF 24 DB 5 ADB 9 IRF
26 DB 6 ADB 10 IRG 26 DB 6 ADB 10 IRG
28 DB 7 ADB 11 DSI 28 DB 7 ADB 11 DSI
30 BASP 30 BASP
32 PL M5 V BASPA 32 PL M5 V BASPA
Back- 2 P5 V M5 V 2 P5 V M5 V
plane 4 DB 12 DB 8 4 DB 12 DB 8
conn. 2 6 DB 13 DB 9 6 DB 13 DB 9
8 DB 14 DB 10 8 DB 14 DB 10
10 DB 15 DB 11 10 DB 15 DB 11
12 12
14 NAU PL 14 NAU PL
16 BAU PL 16 BAU PL
18 18 RESETA PEU
20 PL PL * 20 PL
22 PL 22 PL
24 GEP 24 GEP
26 PL * PL 26 PL
28 PL PL PL 28 PL PL PL
30 M24 V 1) M24 V 1) M24 V 1) 30 M24 V 1) M24 V 1) M24 V 1)
32 P24 V M5 V P15 V 32 P24 V M5 V P15 V

PL * = Only at slots 75, 83, 91 and 99

2) M24 V also serves as the return line for P15 V.

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C79000-G8576-C199-06 11-3
Connector Assignments

Slot 139, 147 Slot 155, 163

I/O, IM, IP without page addressing I/O, IM
Back- Pin- Pin Row Pin- Pin Row
plane No
No. No
No.
conn. 1 z b d z b d

2 P5 V M5 V 2 P5 V M5 V
4 PL PESP 4 PL PESP P5 V
6 RESET ADB 0 ADB 12 6 RESET ADB 0 ADB 12
8 MEMR ADB 1 ADB 13 8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB 14 10 MEMW ADB 2 ADB 14
12 RDY ADB 3 ADB 15 12 RDY ADB 3 ADB 15
14 DB 0 ADB 4 14 DB 0 ADB 4 P5 V
16 DB 1 ADB 5 16 DB 1 ADB 5 P5 V
18 DB 2 ADB 6 M5 V 18 DB 2 ADB 6 M5 V
20 DB 3 ADB 7 M5 V 20 DB 3 ADB 7 M5 V
22 DB 4 ADB 8 M5 V 22 DB 4 ADB 8 M5 V
24 DB 5 ADB 9 M5 V 24 DB 5 ADB 9 M5 V
26 DB 6 ADB 10 M5 V 26 DB 6 ADB 10 M5 V
28 DB 7 ADB 11 M5 V 28 DB 7 ADB 11 M5 V
30 BASP M5 V 30 BASP M5 V
32 M5 V BASPA 32 M5 V BASPA
Back- 2 P5 V M5 V 2 P5 V M5 V
plane 4 DB 12 DB 8 4 DB 12 DB 8
conn. 2 6 DB 13 DB 9 6 DB 13 DB 9
8 DB 14 DB 10 8 DB 14 DB 10
10 DB 15 DB 11 10 DB 15 DB 11
12 12 P5 V P5 V
14 14 P5 V P5 V
16 16 P5 V P5 V
18 RESETA PEU 18 RESETA PEU
20 20
22 M5 V M5 V 22 M5 V M5 V
24 M5 V M5 V 24 M5 V M5 V
26 M5 V M5 V 26 M5 V M5 V
28 M5 V M5 V 28 M5 V M5 V
30 M5 V M5 V 30 M5 V M5 V
32 M5 V M5 V 32 M5 V M5 V

Pin designation of the interrupt signals on the backplane

Interrupt Sink Interrupt Source

Module CPU 1 CPU 2 CPU 3 CPU 4 I/Os/CP/IP
Slot No. 11 27 43 59 19, 35, 51, 67-131
Signal
IRA 1d 14 1d 14
IRB 1d 14 1d 16
IRC 1d 14 1d 18
IRD 1d 14 1d 20
IRE (CPU 948 only) 1d 22 1d 22 1d 22 1d 22 1d 22
IRF (CPU 948 only) 1d 24 1d 24 1d 24 1d 24 1d 24
IRG (CPU 948 only) 1d 26 1d 26 1d 26 1d 26 1d 26

System Manual
11-4 C79000-G8576-C199-06
 Connector Assignments

Connector assignments of the backplane for the EU 183U, 184U, 187 U

I/O Modules IM 312-5
EU Slot EU Slot
183U 11 to 155 184U 163
184U 3 to 155 187U
187U 3 to 147
Backplane
p Pin Pin Row Pin Pin Row
conn. 1 N
No. z b N
No. z b d
2 + 5V 0V 2 + 5V 0V Shield
4 – PESP 4 – PESP +5V
6 CPKL ADB0 6 CPKL ADB0 +5V
8 MEMR ADB1 8 MEMR ADB1 +5V
10 MEMW ADB2 10 MEMW ADB2 +5V
12 RDY ADB3 12 RDY ADB3 +5V
14 DB0 ADB4 14 DB0 ADB4 +5V
16 DB1 ADB5 16 DB1 ADB5 +5V
18 DB2 ADB6 18 DB2 ADB6 0V
20 DB3 ADB7 20 DB3 ADB7 0V
22 DB4 0V 22 DB4 0V 0V
24 DB5 0V 24 DB5 0V 0V
26 DB6 0V 26 DB6 0V 0V
28 DB7 0V 28 DB7 0V 0V
30 – BASP 30 – BASP 0V
32 – 0V 32 0V 0V 0V

IM 300-3 and -5 / 312-3 IM 310, IM 314, IM 317, IM 318

EU Slot EU Slot
183U 163 183U 3
Backplane
p Pin- Pin Row Pin- Pin Row
conn. 1 N
No. z b d N
No. z b d
2 + 5V 0V Shield 2 + 5V 0V Shield
4 – PESP +5V 4 Takt PESP +5V
6 CPKL ADB0 – 6 CPKL ADB0 –
8 MEMR ADB1 – 8 MEMR ADB1 –
10 MEMW ADB2 – 10 MEMW ADB2 –
12 RDY ADB3 – 12 RDY ADB3 –
14 DB0 ADB4 +5V 14 DB0 ADB4 +5V
16 DB1 ADB5 +5V 16 DB1 ADB5 +5V
18 DB2 ADB6 0V 18 DB2 ADB6 0V
20 DB3 ADB7 0V 20 DB3 ADB7 0V
22 DB4 0V 0V 22 DB4 0V 0V
24 DB5 0V 0V 24 DB5 0V 0V
26 DB6 0V 0V 26 DB6 0V 0V
28 DB7 0V 0V 28 DB7 0V 0V
30 EANK BASP 0V 30 – BASP 0V
32 – 0V BASPA 32 – 0V BASPA
Backplane 2 + 5V 0V – 2 + 5V 0V –
conn. 2 4 – – 0V 4 – – 0V
6 – – – 6 – – –
8 – – – 8 – – –
10 – – – 10 – – –
12 +5V +5V +5V 12 +5V +5V +5V
14 +5V +5V +5V 14 +5V +5V +5V
16 +5V +5V +5V 16 +5V +5V +5V
18 CPKLA NAU – 18 CPKLA NAU –
20 – – – 20 – – –
22 0V 0V – 22 0V 0V –
24 0V 0V – 24 0V 0V –
26 0V 0V – 26 0V 0V –
28 0V 0V – 28 0V 0V –
30 0V 0V – 30 0V 0V –
32 0V 0V – 32 0V 0V –

System Manual
C79000-G8576-C199-06 11-5
Connector Assignments

Connector assignments of the backplane for the EU 185U

IM 310 and IM 314 923C Coordinator
I/O Module I/O Module
Slot 3 Slot 11
Pin- Pin Row Pin- Pin Row
No. z b d No. z b d
Backplane 2 +5V 0 V 2 +5V 0V
conn. 1 4 PESP 4 PESP UBAT
6 RESET ADB0 ADB12 6 RESET ADB0 ADB12
8 MEMR ADB1 ADB13 8 MEMR ADB1 ADB13
10 MEMW ADB2 ADB14 10 MEMW ADB2 ADB14
12 RDY ADB3 ADB15 12 RDY ADB3 ADB15
14 DB0 ADB4 14 DB0 ADB4
16 DB1 ADB5 16 DB1 ADB5
18 DB2 ADB6 0V 18 DB2 ADB6
20 DB3 ADB7 0V 20 DB3 ADB7
22 DB4 ADB8 0V 22 DB4 ADB8
24 DB5 ADB9 0V 24 DB5 ADB9
26 DB6 ADB10 0V 26 DB6 ADB10
28 DB7 ADB11 0V 28 DB7 ADB11 DSI
30 DSI BASP 0V 30 BASP
32 0V BASPA 32 0V BASPA
Backplane 2 +5V 0V 2 +5V 0 V
conn. 2 4 DB12 DB8 0V 4 DB12 DB8
6 DB13 DB9 RESET 6 DB13 DB9 RxDS8
8 DB14 DB10 8 DB14 DB10 TxDS8
10 DB15 DB11 10 DB15 DB11 RxDS7
12 + 5V 12 RxDS6 TxDS7
14 + 5V 14 NAU TxDS6 RxDS5
16 + 5V 16 BAU RxDS4 TxDS5
18 RESETA NAU 18 RESETA TxDS4 RxDS3
20 20 TxDS3
22 0V 0V 22 PEU RxDS1
24 0V 0V 24 GEP RxDS2 TxDS1
26 0V 0V 26 TxDS2
28 0V 0V 28 SPRxD
30 0V 0V 30 M2 M2 M2
32 0V 0V 32 + 24V 0V + 15 V

System Manual
11-6 C79000-G8576-C199-06
 Connector Assignments

Communication Processor Communication Processor

Intelligent I/Os Intelligent I/Os
I/O Module I/O Module
Slots 19 to 75 Slots 83 to 139
Pin- Pin Row Pin- Pin Row
No. z b d No. z b d
Backplane 2 +5V 0V 2 +5V 0V
conn. 1 4 PESP UBAT 4 PESP UBAT
6 RESET ADB0 ADB12 6 RESET ADB0 ADB12
8 MEMR ADB1 ADB13 8 MEMR ADB1 ADB13
10 MEMW ADB2 ADB14 10 MEMW ADB2 ADB14
12 RDY ADB3 ADB15 12 RDY ADB3 ADB15
14 DB0 ADB4 14 DB0 ADB4
16 DB1 ADB5 16 DB1 ADB5
18 DB2 ADB6 18 DB2 ADB6
20 DB3 ADB7 20 DB3 ADB7
22 DB4 ADB8 22 DB4 ADB8
24 DB5 ADB9 24 DB5 ADB9
26 DB6 ADB10 26 DB6 ADB10
28 DB7 ADB11 DSI 28 DB7 ADB11 DSI
30 BASP 30 BASP
32 0V BASPA 32 0V BASPA
Backplane 2 +5V 0V 2 +5V 0V
conn. 2 4 DB12 DB8 4 DB12 DB8
6 DB13 DB9 6 DB13 DB9
8 DB14 DB10 8 DB14 DB10
10 DB15 DB11 10 DB15 DB11
12 12
14 NAU 14 NAU
16 BAU 16 BAU
18 18
20 20
22 PEU TxDSn 22 PEU
24 GEP 24 GEP
26 RxDSn 26
28 SPRxD 28
30 M2 M2 M2 30 M2 M2 M2
32 + 24 V 0V +15 V 32 + 24 V 0V + 15 V

System Manual
C79000-G8576-C199-06 11-7
Connector Assignments

IM 314 R IM 300
I/O Module I/O Module
Slot 147, 155 Slot 163
Pin- Pin Row Pin- Pin Row
No. z b d No. z b d
Backplane 2 +5V 0 V Shield 2 +5V 0V
conn. 1 4 PESP 4 PESP +5V
6 RESET ADB0 ADB12 6 RESET ADB0 ADB12
8 MEMR ADB1 ADB13 8 MEMR ADB1 ADB13
10 MEMW ADB2 ADB14 10 MEMW ADB2 ADB14
12 RDY ADB3 ADB15 12 RDY ADB3 ADB15
14 DB0 ADB4 14 DB0 ADB4 +5V
16 DB1 ADB5 16 DB1 ADB5 +5V
18 DB2 ADB6 18 DB2 ADB6 0V
20 DB3 ADB7 20 DB3 ADB7 0V
22 DB4 ADB8 22 DB4 ADB8 0V
24 DB5 ADB9 24 DB5 ADB9 0V
26 DB6 ADB10 26 DB6 ADB10 0V
28 DB7 ADB11 28 DB7 ADB11 0V
30 BASP 0V 30 BASP 0V
32 0V 0V BASPA 32 0V BASPA
Backplane 2 +5V 0V 2 +5V 0 V
conn. 2 4 NA0 SA0 0V 4
6 NA1 SA1 RESET 6
8 NA2 SA2 8
10 NA3 SA3 10
12 12 + 5V + 5V
14 14 + 5V + 5V
16 16 + 5V + 5V
18 RESETA NAU 18 RESETA NAU
20 20
22 0V 0V 22 0V 0V
24 0V 0V 24 0V 0V
26 0V 0V 26 0V 0V
28 0V 0V 28 0V 0V
30 0V 0V 30 0V 0V
32 0V 0V 32 0V 0V

System Manual
11-8 C79000-G8576-C199-06
 Connector Assignments

Connector assignments of the power supply units

Connector X1 The terminals for the supply lines between the power supply unit and the
backplane are in an 8-way connector (Connector X1) at the rear of the unit.
The following figures show the connector assignments.

5V/18A power supply units

Pins 4 to 6 are not fitted.

M2 (0V) 5V/18A

1 2 3 4 5 6 7 8

5V/40A power supply units

M2 (0V) 5V/40A

1 2 3 4 5 6 7 8

Connector X2 The signal terminals of the power supply unit are in a 37-way connector
(Connector X2) at the rear of the unit.
The following figure shows the connector assignments. Pins 8 and 9 are
reserved.

RESETA DSI GEP

reserved
NAU

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

BASPA BAU +15V 24V

M2 (0V)
RESET U-BATT

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

System Manual
C79000-G8576-C199-06 11-9
Connector Assignments

Connector assignments of the 6ES5 955-3NA12 power supply unit

Connector X1 The terminals of the supply lines between the power supply unit and the
backplane are in an 8-way connector (subminiature, fitted with 8 high-current
contacts, Series D to MIL-C24308).

M2 (0V) 5V/10A

1 2 3 4 5 6 7 8

Connector X2 The signal terminals of the power supply unit are in a 37-way connector
(plug connector, 37-way, Series D to MIL-C24308).

RESET A DSI
RESET GEP
DS NAU HOLD

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
+15 V 24V/0.8A
BASP BASP A IR U BATT
M2 (0V) –15V
unas-
RESIN CPKL BAU RLSA signed

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

System Manual
11-10 C79000-G8576-C199-06
 Connector Assignments

Assignments of the backplane connector CPU 948

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 PESP UBAT
6 RESET ADB 0 ADB 12
8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB14
12 RDY ADB 3 ADB 15
14 DB0 ADB 4 IR
16 DB1 ADB 5
18 DB2 ADB 6
20 DB3 ADB 7
22 DB4 ADB 8 IRE
24 DB5 ADB 9 IRF
26 DB6 ADB 10 IRG
28 DB7 ADB 11 DSI
30 BASP BUSEN
32 HALT M5V BASPA
Backplane 2 +5V M5V
conn. 2 4 DB 12 DB8
6 DB 13 DB9 M5V
8 DB 14 DB 10
10 DB 15 DB 11
12 M5V
14 NAU PGBUSX
16 BAU PGBUSY
18 +5V M5V
20 STEU
22 PEU STOPPA TxD
24 GEP M5V
26 RxD TEST
28 PERO
30 M 24 V M 24 V M 24V
32 + 24 V M5V

System Manual
C79000-G8576-C199-06 11-11
Connector Assignments

Assignments of the backplane connector CPU 928B

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 PESP UBAT
6 CPKL ADB 0 ADB 12
8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB14
12 RDY ADB 3 ADB 15
14 DB0 ADB 4 IR
16 DB1 ADB 5
18 DB2 ADB 6
20 DB3 ADB 7
22 DB4 ADB 8
24 DB5 ADB 9
26 DB6 ADB 10
28 DB7 ADB 11 DSI
30 BASP BUSEN
32 HALT M5V BASPA
Backplane 2 +5V M5V
conn. 2 4 DB 12 DB8
6 DB 13 DB9 M5V
8 DB 14 DB 10
10 DB 15 DB 11
12 M5V
14 NAU
16 BAU
18 +5V M5V
20 STEU
22 PEU STOPPA TxD
24 GEP M5V
26 RxD TEST
28 PERO
30 M 24 V M 24 V
32 + 24 V M5V

System Manual
11-12 C79000-G8576-C199-06
 Connector Assignments

Assignments of the backplane connectorCPU 928

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 PESP UBAT
6 CPKL ADB 0 ADB 12
8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB14
12 RDY ADB 3 ADB 15
14 DB0 ADB 4 IR
16 DB1 ADB 5
18 DB2 ADB 6
20 DB3 ADB 7
22 DB4 ADB 8
24 DB5 ADB 9
26 DB6 ADB 10
28 DB7 ADB 11 DSI
30 BASP BUSEN
32 HALT M5V BASPA
Backplane 2 +5V M5V
conn. 2 4 DB 12 DB8
6 DB 13 DB9 M5V
8 DB 14 DB 10
10 DB 15 DB 11
12 M5V
14 NAU
16 BAU
18 +5V M5V
20 STEU
22 PEU STOPPA TxD
24 GEP M5V
26 RxD TEST
28 PERO
30 M 24 V M 24 V
32 + 24 V M5V

System Manual
C79000-G8576-C199-06 11-13
Connector Assignments

Assignments of the backplane connector CPU 922

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 PESP UBAT
6 CPKL ADB 0 ADB 12
8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB14
12 RDY ADB 3 ADB 15
14 DB0 ADB 4 IR
16 DB1 ADB 5
18 DB2 ADB 6
20 DB3 ADB 7
22 DB4 ADB 8
24 DB5 ADB 9
26 DB6 ADB 10
28 DB7 ADB 11 DSI
30 QUITT BASP BUSEN
32 HALT M5V BASPA
Backplane 2 +5V M5V
conn. 2 4
6 M5V
8
10
12 M5V
14 NAU
16 BAU
18 M5V
20 STEU
22 PEU STOPPA TxD
24 GEP M5V
26 RxD TEST
28 PERO
30 M 24 V M 24 V
32 + 24 V M5V

System Manual
11-14 C79000-G8576-C199-06
 Connector Assignments

Assignments of the CPU front connector (PG interface)

Pin No. Designation

1 Housing/0 V/0Vext
2 RxD
3 VPG + 5 V DC
4 + 24 V from bus
5 0 V/0 Vint
6 TxD
7 TxD
8 Housing/0 V/0Vext
9 RxD
10 24 V ground
11 20 mA/transmitter
12 0 V/0 Vint
13 20 mA/receiver
14 VPG + 5 V DC
15 0 V/0 Vint

System Manual
C79000-G8576-C199-06 11-15
Connector Assignments

Assignments of the backplane connector: 923A coordinator

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 UBAT
6 RESET ADB 0
8 MEMR ADB 1
10 MEMW ADB 2
12 RDY ADB 3
14 DB 0 ADB 4 BUSEN 1
16 DB 1 ADB 5 BUSEN 2
18 DB 2 ADB 6 BUSEN 3
20 DB 3 ADB 7 BUSEN 4
22 DB 4 ADB 8
24 DB 5 ADB 9
26 DB 6 ADB 10
28 DB 7 ADB 11 DSI
30
32 HALT M5V
Backplane 2 +5V M5V
conn. 2 4
6
8
10
12
14 NAU
16
18
20 STEU
22 STOPPA
24
26 TEST
28 PERO
30
32 M5V

System Manual
11-16 C79000-G8576-C199-06
 Connector Assignments

Assignments of the backplane connector: 923C coordinator

Pin Pin Row

No.
N z b d
Backplane 2 +5V M5V
conn. 1 4 UBAT
6 RESET ADB 0 ADB 12
8 MEMR ADB 1 ADB 13
10 MEMW ADB 2 ADB 14
12 RDY ADB 3 ADB 15
14 DB 0 ADB 4 BUSEN 1
16 DB 1 ADB 5 BUSEN 2
18 DB 2 ADB 6 BUSEN 3
20 DB 3 ADB 7 BUSEN 4
22 DB 4 ADB 8
24 DB 5 ADB 9
26 DB 6 ADB 10
28 DB 7 ADB 11 DSI
30
32 HALT M5V
Backplane 2 +5V M5V
conn. 2 4
6 RxD 8
8 TxD 8
10 RxD 7
12 RxD 6 TxD 7
14 NAU TxD 6 RxD 5
16 RxD 4 TxD 5
18 TxD 4 RxD 3
20 STEU TxD 3
22 STOPPA RxD 1
24 TxD 1
26 TEST
28 PERO
30 M 24 V
32 M5V M5V

System Manual
C79000-G8576-C199-06 11-17
Connector Assignments

Assignments of the front connector for the coordinators

Pin No. Designation

1 Housing/0 V/0Vext
2 Receiver TTY(-)
3 Private line
4 +24 V
5 Private line
6 Transmitter TTY (+)
7 Transmitter TTY (-)
8 Housing/0 V/0Vext
9 Receiver TTY (+)
10 24 V ground (20 mA (-) current sources)
11 20 mA (+) current source
12 Private line
13 20 mA (+) current source
14 Private line
15 Private line

System Manual
11-18 C79000-G8576-C199-06
 Connector Assignments

Assignments of the backplane connectors of the IMs

IM 300-3 IM 300-5 IM 300-5L IM 301-3

Pin Row Pin Row Pin Row Pin Row

Pin z b d z b d z b d z b d
B 2 +5V 0V Shield +5V 0V Shield +5V M – +5V 0V Shield
a 4 – PESP – – PESP +5V – PESP – – PESP –
c 6 CPKL ADB0 – CPKL ADB0 – RESET ADB1 – CPKL ADB0 –
k- 8 MEMR ADB1 – MEMR ADB1 – MRD ADB2 – MEMR ADB1 –
p 10 MEMW ADB2 – MEMW ADB2 – MWR ADB3 – MEMW ADB2 –
l 12 RDY ADB3 – RDY ADB3 – RDY ADB4 – RDY ADB3 –
a 14 DB0 ADB4 – DB0 ADB4 +5V DB0 ADB5 – DB0 ADB4 –
n 16 DB1 ADB5 – DB1 ADB5 +5V DB1 ADB6 – DB1 ADB5 –
e 18 DB2 ADB6 0V DB2 ADB6 0V DB2 ADB7 – DB2 ADB6 0V
20 DB3 ADB7 0V DB3 ADB7 0V DB3 ADB8 – DB3 ADB7 0V
c 22 DB4 0V 0V DB4 ADB 8 0V DB4 ADB9 – DB4 ADB 8 0V
o 24 DB5 0V 0V DB5 ADB 9 0V DB5 ADB10 – DB5 ADB 9 0V
n 26 DB6 0V 0V DB6 ADB 10 0V DB6 ADB11 – DB6 ADB 10 0V
n 28 DB7 0V 0V DB7 ADB 11 0V DB7 BASP – DB7 ADB 11 0V
1 30 – BASP 0V – BASP 0V – M – – BASP 0V
32 – 0V – 0V 0V – – – – – 0V –
B 2 +5V – – +5V – – +5V M – +5V – –
a 4 – – – – – – – – – – – –
c 6 – – – – – – – – – – – –
k- 8 – – – – – – – – – – – –
p 10 – – – – – – – – – – – –
l 12 – – – +5V +5V – – – – +5V +5V –
a 14 – – – +5V +5V – – – – +5V +5V –
n 16 – – – +5V +5V – – – – +5V +5V –
e 18 – NAU – – – – – PEU – – NAU –
20 – – – – – – – – – – – –
c 22 0V 0V – 0V 0V – – – – 0V 0V –
o 24 0V 0V – 0V 0V – – – – 0V 0V –
n 26 0V 0V – 0V 0V – – – – 0V 0V –
n 28 0V 0V – 0V 0V – – – – 0V 0V –
2 30 0V 0V – 0V 0V – – – – 0V 0V –
32 0V 0V – 0V 0V – – M – 0V 0V –

System Manual
C79000-G8576-C199-06 11-19
Connector Assignments

IM 301-5 IM 304
Pin Row Pin Row
Pin z b d z b d
B 2 +5V 0V Shield +5V M –
a 4 – PESP +5V – – –
c 6 CPKL ADB0 – CPKL ADB0 ADB 12
k- 8 MEMR ADB1 – MEMR ADB1 ADB 13
p
10 MEMW ADB2 – MEMW ADB2 ADB14
l
a
12 RDY ADB3 – RDY ADB3 ADB15
n 14 DB0 ADB4 +5V DB0 ADB4 –
e 16 DB1 ADB5 +5V DB1 ADB5 –
18 DB2 ADB6 0V DB2 ADB6 –
c 20 DB3 ADB7 0V DB3 ADB7 –
o 22 DB4 ADB 8 0V DB4 ADB8 –
n 24 DB5 ADB 9 0V DB5 ADB9 –
n 26 DB6 ADB 10 0V DB6 ADB10 –
1 28 DB7 ADB 11 0V DB7 ADB11 –
30 – BASP 0V – BASP –
32 0V 0V – – M –
B 2 +5V – – +5V M –
a 4 – – – DB12 DB8 –
c 6 – – – DB13 DB9 –
k- 8 – – – DB14 DB10 –
p
10 – – – DB15 DB11 –
l
a
12 +5V +5V – – – –
n 14 +5V +5V – PEU * – –
e 16 +5V +5V – – – –
18 – NAU – – PEU * –
c 20 – – – – – –
o 22 0V 0V – – – –
n 24 0V 0V – – – –
n 26 0V 0V – – – –
2 28 0V 0V – – – –
30 0V 0V – – – –
32 0V 0V – – M –

System Manual
11-20 C79000-G8576-C199-06
 Connector Assignments

IM 310-3 IM 312-3 IM 312-5 IM 314

Pin Row Pin Row Pin Row Pin Row

Pin z b d z b d z b d z b d
B 2 +5V 0V Shield+ +5V 0V – +5V 0V –+ +5V M –
a 4 – PESP +5V – PESP +5V – PESP +5V – PESP +5V
c 6 CPKL ADB0 – CPKL ADB0 +5V CPKL ADB0 +5V CPKLa ADB0 ADB12
k- 8 MEMRA DB1 – MEMR ADB1 +5V MEMR ADB1 +5V MEMR ADB1 ADB13
p 10 MEMW ADB2 – MEMW ADB2 +5V MEMW ADB2 +5V MEMW ADB2 ADB14
l 12 RDY ADB3 – RDY ADB3 +5V RDY ADB3 +5V RDY ADB3 ADB15
a 14 DB0 ADB4 +5V DB0 ADB4 +5V DB0 ADB4 +5V DB0 ADB4 –
n 16 DB1 ADB5 +5V DB1 ADB5 +5V DB1 ADB5 +5V DB1 ADB5 –
e 18 DB2 ADB6 0V DB2 ADB6 0V DB2 ADB6 0V DB2 ADB6 –
20 DB3 ADB7 0V DB3 ADB7 0V DB3 ADB7 0V DB3 ADB7 –
c 22 DB4 – 0V DB4 – 0V DB4 – 0V DB4 ADB8 –
o 24 DB5 – 0V DB5 – 0V DB5 – 0V DB5 ADB9 –
n 26 DB6 – 0V DB6 – 0V DB6 – 0V DB6 ADB10–
n 28 DB7 – 0V DB7 – 0V DB7 – 0V DB7 ADB11–
1 30 – BASP 0V NAU BASP 0V – BASP 0V DSI BASP –
32 – 0V – – 0V BASPA – 0V – – M –
B 2 +5V 0V – +5V M –
a 4 – – US DB12 DB8 –
c 6 – – – DB13 DB9 CPKLe
k- 8 – – – DB14 DB10 –
p 10 – – – DB15 DB11 –
l 12 – – +5V – +5V –
a 14 – – +5V – +5V –
n 16 – – +5V – +5V –
e 18 CPKLA NAU – CPKLA NAU –
20 – – – – – –
c 22 0V 0V – M M –
o 24 0V 0V – M M –
n 26 0V 0V – M M –
n 28 0V 0V – M M –
2 30 0V 0V – M M –
32 0V 0V – M M –

System Manual
C79000-G8576-C199-06 11-21
Connector Assignments

Assignments of the front blade connectors

IM 300-3 IM 300-5C IM 300-5L IM 301 IM 304

Pin Blade Con- Blade Con- Blade Con- Blade Con- Blade Con- Blade Con- Blade Con- Blade Con-
No. nector 3 nector 3 nector 4 nector 3, 4 nector 3 nector 4 nector 3 nector 4
1 Shield 0Vext 0Vext Shield Shield Shield
2 – + 5V + 5V +5V – + ADB 4 + AD 12 + AD 12
3 – + 5V + 5V +5V – – ADB 4 – AD 12 – AD 12
4 – + 5V + 5V +5V – + ADB 5 + AD 13 + AD 13
5 +PEU + 5V + 5V PEU1 +PEU – ADB 5 – AD 13 – AD 13
6 – PEU + 5V + 5V PEU2 – PEU + ADB 6 + AD 14 + AD 14
7 ADB1 ADB 1 ADB 1 ADB1 ADB1 – ADB 6 – AD 14 – AD 14
8 ADB4 ADB 4 ADB 4 ADB4 ADB4 + ADB 7 + AD 15 + AD 15
9 ADB7 ADB 7 ADB 7 ADB7 ADB7 – ADB 7 – AD 15 – AD 15
10 DB1 DB 1 DB 1 DB1 DB1 + DB 6 + AD 6 + AD 6
11 DB4 DB 4 DB 4 DB4 DB4 – DB 6 – AD 6 – AD 6
12 0V 0V 0V M 0V + DB 7 + AD 7 + AD 7
13 0V 0V 0V M 0V – DB 7 – AD 7 – AD 7
14 0V 0V 0V M 0V + PEU + PEU + PEU **
15 0V 0V 0V M 0V – PEU – PEU – PEU **
16 0V 0V 0V M 0V Rg 0 – 0V
17 Shield 0Vext 0Vext Shield Shield Shield – –0V
18 – + 5V + 5V +5V – + ADB 0 + AD 8 + AD 8
19 – + 5V + 5V +5V – – ADB 0 – AD 8 – AD 8
20 – + 5V + 5V +5V – + ADB 1 + AD 9 + AD 9
21 + ZGU + 5V + 5V +5V – ZGU – ADB 1 – AD 9 – AD 9
22 – ZGU + 5V + 5V +5V + ZGU + ADB 2 + AD 10 + AD 10
23 ADB0 ADB 0 ADB 0 ADB0 ADB0 – ADB 2 – AD 10 – AD 10
24 ADB3 ADB 3 ADB 3 ADB3 ADB3 + ADB 3 + AD 11 + AD 11
25 ADB6 ADB 6 ADB 6 ADB6 ADB6 – ADB 3 – AD 11 – AD 11
26 0V 0V 0V M 0V + DB 3 + AD 3 + AD 3
27 DB3 DB 3 DB 3 DB3 DB3 – DB 3 – AD 3 – AD 3
28 DB6 DB 6 DB 6 DB6 DB6 + DB 4 + AD 4 + AD 4
29 0V 0V 0V M 0V – DB 4 – AD 4 – AD 4
30 0V 0V 0V M 0V + DB 5 + AD 5 + AD 5
31 0V 0V 0V M 0V – DB 5 – AD 5 – AD 5
32 0V 0V 0V M 0V + ZGU + ZGU (ZGU/
33 0V 0V 0V M 0V – ZGU – ZGU PAR) *
34 – +5V +5V +5V – + MEMR + MEMR + MEMR
35 – FAKT FAKT – – MEMR – MEMR – MEMR
36 CPKL CPKL CPKL RESET CPKL + MEMW + MEMW + MEMW
37 MEMR MEMR MEMR MRD MEMR – MEMW – MEMW – MEMW
38 MEMW MEMW MEMW MWR MEMW + PESP + ALE + ALE
39 PESP PESP PESP PESP PESP – PESP – ALE – ALE
40 ADB2 ADB 2 ADB 2 ADB2 ADB2 + BASP + BASP (BASP/
41 ADB5 ADB 5 ADB 5 ADB5 ADB5 – BASP – BASP PAF) *
42 DB0 DB 0 DB 0 DB0 DB0 + DB 0 + AD0 + AD0
43 DB2 DB 2 DB 2 DB2 DB2 – DB 0 – AD 0 – AD 0
44 DB5 DB 5 DB 5 DB5 DB5 + DB 1 + AD 1 + AD 1
45 DB7 DB 7 DB 7 DB7 DB7 – DB 1 – AD 1 – AD 1
46 RDY RDY RDY RDY RDY + DB 2 + AD 2 + AD 2
47 BASP BASP BASP BASP BASP – DB 2 – AD 2 – AD 2
48 – EANK EANK – + RDY + RDY + RDY
49 0V 0V 0V M 0V – RDY – RDY – RDY
50 0V 0V 0V M 0V 0V – –

* For parallel communication with the IM 324U

** No signal in parallel communication

System Manual
11-22 C79000-G8576-C199-06
 Connector Assignments

Pin IM 310-3 IM 312-3 IM 312-5C IM 314

No.
Blade Con- Blade Con- Blade Con- Blade Con- Blade Con- Blade Con- Blade Con-
nector 3 nector 4 nector 3 nector 3 nector 4 nector 3 nector 4
1 0Vext 0Vext Shield 0Vext 0Vext
2 + ADB 4 + ADB 4 – + 5V + 5V + AD 12 + AD 12
3 – ADB 4 – ADB 4 – + 5V + 5V – AD 12 – AD 12
4 + ADB 5 + ADB 5 – + 5V + 5V + AD 13 + AD 13
5 – ADB 5 – ADB 5 + PEU + 5V + 5V – AD 13 – AD 13
6 + ADB 6 + ADB 6 – PEU + 5V + 5V + AD 14 + AD 14
7 – ADB 6 – ADB 6 ADB1 ADB 1 ADB 1 – AD 14 – AD 14
8 + ADB 7 + ADB 7 ADB4 ADB 4 ADB 4 + AD 15 + AD 15
9 – ADB 7 – ADB 7 ADB7 ADB 7 ADB 7 – AD 15 – AD 15
10 + DB 6 + DB 6 DB1 DB 1 DB 1 + AD 6 + AD 6
11 – DB 6 – DB 6 DB4 DB 4 DB 4 – AD 6 – AD 6
12 + DB 7 + DB 7 0V 0V 0V + AD 7 + AD 7
13 – DB 7 – DB 7 0V 0V 0V – AD 7 – AD 7
14 + PEU + PEU 0V 0V 0V PEUa PEUe
15 – PEU – PEU 0V 0V 0V PEUa PEUe
16 – 5V 0V 0V 0V – 0V
17 0Vext 0Vext Shield 0Vext 0Vext – 0V
18 + ADB 0 + ADB 0 – + 5V + 5V + AD 8 + AD 8
19 – ADB 0 – ADB 0 – + 5V + 5V – AD 8 – AD 8
20 + ADB 1 + ADB 1 – + 5V + 5V + AD 9 + AD 9
21 – ADB 1 – ADB 1 – ZGU + 5V + 5V – AD 9 – AD 9
22 + ADB 2 + ADB 2 + ZGU + 5V + 5V + AD 10 + AD 10
23 – ADB 2 – ADB 2 ADB0 ADB 0 ADB 0 – AD 10 – AD 10
24 + ADB 3 + ADB 3 ADB3 ADB 3 ADB 3 + AD 11 + AD 11
25 – ADB 3 – ADB 3 ADB6 ADB 6 ADB 6 – AD 11 – AD 11
26 + DB 3 + DB 3 0V 0V 0V + AD 3 + AD 3
27 – DB 3 – DB 3 DB3 DB 3 DB 3 – AD 3 – AD 3
28 + DB 4 + DB 4 DB6 DB 6 DB 6 + AD 4 + AD 4
29 – DB 4 – DB 4 0V 0V 0V – AD 4 – AD 4
30 + DB 5 + DB 5 0V 0V 0V + AD 5 + AD 5
31 – DB 5 – DB 5 0V 0V 0V – AD 5 – AD 5
32 + ZGU + ZGU 0V 0V 0V ZGUe ZGUa
33 – ZGU – ZGU 0V 0V 0V ZGUe ZGUa
34 + MEMR + MEMR – +5V +5V + MEMR + MEMR
35 – MEMR – MEMR – – – – MEMR – MEMR
36 + MEMW + MEMW CPKL CPKL CPKL + MEMW + MEMW
37 – MEMW – MEMW MEMR MEMR MEMR – MEMW – MEMW
38 + PESP + PESP MEMW MEMW MEMW + ALE + ALE
39 – PESP – PESP PESP PESP PESP – ALE – ALE
40 + BASP + BASP ADB2 ADB 2 ADB 2 + BASP + BASP
41 – BASP – BASP ADB5 ADB 5 ADB 5 – BASP – BASP
42 + DB 0 + DB 0 DB0 DB 0 DB 0 + AD0 + AD0
43 – DB 0 – DB 0 DB2 DB 2 DB 2 – AD 0 – AD 0
44 + DB 1 + DB 1 DB5 DB 5 DB 5 + AD 1 + AD 1
45 – DB 1 – DB 1 DB7 DB 7 DB 7 – AD 1 – AD 1
46 + DB 2 + DB 2 RDY RDY RDY + AD 2 + AD 2
47 – DB 2 – DB 2 BASP BASP BASP – AD 2 – AD 2
48 + RDY + RDY – – – + RDY + RDY
49 – RDY – RDY 0V 0V 0V – RDY – RDY
50 – 0V 0V 0V 0V – +5V

System Manual
C79000-G8576-C199-06 11-23
Connector Assignments

System Manual
11-24 C79000-G8576-C199-06
Appendix A
Given in the Appendix are the
Ordering Information on products mentioned in this manual
References for further reading

System Manual
C79000-G8576-C199-06 A-1
Appendix

Ordering Information
Given in this section are the order numbers for the products mentioned and/or
described in the System Manual. The order numbers are arranged according
to the chapters in which the corresponding products are mentioned.

For Chapter 4

Central Controllers
with power supply unit
6ES5 955-3LC42 6ES5 188-3UA12
6ES5 955-3LF42 6ES5 188-3UA22
6ES5 955-3NC42 6ES5 188-3UA32
6ES5 955-3NF42 6ES5 188-3UA51
with power supply unit
6ES5 955-3NA12 6ES5 135-3UA42
Expansion Units
with power supply unit
6ES5 955-3LC42 6ES5 183-3UA13
6ES5 185-3UA13
with power supply unit
6ES5 955-3LF42 6ES5 185-3UA33
with power supply unit
6ES5 955-3NC42 6ES5 183-3UA22
6ES5 185-3UA23
with power supply unit
6ES5 955-3NF42 6ES5 185-3UA43
with fan module
230/120V AC 6ES5 184-3UA11
24V DC 6ES5 184-3UA21
without power supply or fan module 6ES5 187-5UA11
Baffle 6ES5 981-0DA11
Dummy front plates
width 1 slot 6XF2 008-6KB00
width 2 slots 6XF2 016-6KB00

System Manual
A-2 C79000-G8576-C199-06
 Appendix

Power Supply Units

230/120 V AC, isolated, 5 V DC/18 A 6ES5 955-3LC42
230/120 V AC, isolated, 5 V DC/40 A 6ES5 955-3LF42
24 V DC, isolated, 5 V DC/18 A 6ES5 955-3NC42
24 V DC, isolated, 5 V DC/40 A 6ES5 955-3NF42
Lithium backup battery 3.6 V 6EW1 000-7AA (with
EWK LZ S2)
Rechargeable battery with two screws 6ES5 980-0NC11
(with EWK LZ S2)
Fan subassembly with fan and 6ES5 988-3NB41
terminals for rechargeable battery (with WKF RZF)
Filter holder, guides, 10 filter mats 6ES5 981-0FA41 (with
WKF RZF)
Filter mats (10) 6ES5 981-0EA41
(with WKF RZF)
Battery compartment C98130-A1155-B21
(with WKF RZF)
Battery compartment holder C98130-A1155-B20
(with WKF RZF)
Battery compartment and battery C98130-A1155-A7
compartment holder (with WKF RZF)
Fuses for 3LC41 4 A, slow, 250 V C97327-Z1006-C130
Fuses for 3LF41 8 A, fast, 250 V C98327-S1001-C23
Fuses for 3NC41 20 A, super-fast, 65 V C98327-S1001-C19
Fuses for 3NF41 30 A, super-fast, 65 V C98327-S1001-C24
(with WKF RZF)
Caps for terminals (4) C98130-A1102-C49
(with WKF RZF)
951 load power supply module
230/120 V AC, isolated, 24 V/4 A 6ES5 951-4LB11
Fuse, 1 A slow W79054-L4011-T100
Fuse, 2 A slow W79054-L4011-T200
Front connector, 20-way
for crimp connection, 40 mm 6ES5 497-4UA42
Spring contacts 6XX3 070
Front connector, 20-way
for screw connection, 40 mm 6ES5 497-4UB42
24V DC, not isolated, 10A 6ES5 955-3NA12
15 V auxiliary submodule 6ES5 956-0AA12
Battery module 6XG3 400-2CK00
Fan unit 6ES5 988-3NA11
Backup battery 6EW1 000-7AA

System Manual
C79000-G8576-C199-06 A-3
Appendix

For Chapter 5

CPUs
CPU 948-1 (640 Kbyte user memory) 6ES5 948-3UA11
CPU 948-2 (1664 Kbyte user memory) 6ES5 948-3UA21
CPU 928B 6ES5 928-3UB12
6ES5 928-3UB21
CPU 928 6ES5 928-3UA12
6ES5 928-3UA21
CPU 922 6ES5 922-3UA11
374 Memory Cards
256 Bbytes 6ES5 374-2FH21
512 Bbytes 6ES5 374-2FJ21
1028 Bbytes 6ES5 374-2FK21
2048 Bbytes 6ES5 374-2FL21
4112 Bbytes 6ES5 374-2FM21
376 Memory Cards
16 Bbytes 6ES5 376-0AA11
32 Bbytes 6ES5 376-0AA21
64 Bbytes 6ES5 376-0AA31
377 Memory Cards
16 Bbytes 6ES5 377-0AA11
32 Bbytes 6ES5 377-0AA21
64 Bbytes 6ES5 377-0AA32
64 Kbytes (with backup battery) 6ES5 377-0BA31
Backup battery 6ES5 980-0DA11
Interface Submodules
PG submodule 6ES5 752-0AA53
TTY submodule for 20 mA current loop 6ES5 752-0AA12
V.24 (RS-232C) submodule 6ES5 752-0AA22
RS422-A/485 submodule 6ES5 752-0AA42
SINEC L1 submodule 6ES5 752-0AA62
Cover for submodule receptacle C79458-L957-B51
BT 777 bus terminal 6ES5 777-xxx00
Standard connecting cables
CPU 948/928B - PG 7xx 6ES5 734-2xxx0
CPU 928B - CP 544/525/524
(RS422-A/485) 6ES5 725-7xxx0
CPU 928B - CP 544/525/524 (TTY) 6ES5 726-1xxx0
CPU 928B - CP 544/525/524 (V.24) 6ES5 726-8xxx0
CPU 928B - DR 210/DR 211
DR 230/DR 231
(TTY/V.24) 6ES5 726-5xxx0
(xxx = SIMATIC length code, see Catalog)

System Manual
A-4 C79000-G8576-C199-06
 Appendix

For Chapter 6

Coordinators
923A coordinator 6ES5 923-3UA11
923C coordinator 6ES5 923-3UC11
Coding plug C79334-A3011-B12
Front cover C79451-A3079-C251
Connecting cable for CP 530, 143 and 5430
0.9 m 6ES5 725-0AK00
2.5 m 6ES5 725-0BC50

For Chapter 7

Interface Modules
IM 300-3 6ES5 300-3AB11
IM 300-5C 6ES5 300-5CA11
IM 300-5L 6ES5 300-5LB11
IM 301-3 6ES5 301-3AB13
IM 301-5 6ES5 301-5CA12
IM 304 6ES5 304-3UB11
IM 310 6ES5 310-3AB11
IM 312-3 (0.5 m) 6ES5 312-3AB11
IM 312-3 (0.95 m) 6ES5 312-3AB31
IM 312-5 (0.5 m) 6ES5 312-5CA11
IM 312-5 (1.5 m) 6ES5 312-5CA21
IM 314 6ES5 314-3UA11
IM 314R 6ES5 314-3UR11
Connecting cable 6ES5-721-0xxx
(xxx = SIMATIC length code,
see Catalog)
Connecting cable for IM 300-5LB11
Length 0.5 m 6ES5 705-0AF00
Length 1.5 m 6ES5 705-0BB0
Terminator
for IM 314 6ES5 760-1AA11
for IM 312 and IM 301-3 6ES5 760-0AB11
for IM 301-3 6ES5 760-0AA11

System Manual
C79000-G8576-C199-06 A-5
Appendix

For Chapter 8

Digital Input/Output Modules

Modules Adhesive Label
6ES5 420-4UA13 C79451-A3079-C751
6ES5 430-4UA13 C79451-A3079-C752
6ES5 431-4UA12 C79451-A3079-C732
6ES5 432-4UA12 C79451-A3079-C733
6ES5 434-4UA12 C79451-A3079-C734
6ES5 435-4UA12 C79451-A3079-C735
6ES5 436-4UA12 C79451-A3079-C736
6ES5 436-4UB12 C79451-A3079-C737
6ES5 441-4UA13 C79451-A3079-C753
6ES5 451-4UA13 C79451-A3079-C755
6ES5 453-4UA12 C79451-A3079-C740
6ES5 454-4UA13 C79451-A3079-C756
6ES5 455-4UA12 C79451-A3079-C742
6ES5 456-4UA12 C79451-A3079-C743
6ES5 456-4UB12 C79451-A3079-C744
6ES5 457-4UA12 C79451-A3079-C727
6ES5 458-4UA12 C79451-A3079-C745
6ES5 458-4UC11 E89100-B2749-C100
6ES5 482-4UA11 C79451-A3079-C749
Front Connectors
Crimp terminals, single-width, 42-way 6ES5 497-4UA12
Crimp terminals, double-width, 42-way 6ES5 497-4UA22
Crimp terminals, double-width, 20-way 6ES5 497-4UA42

Screw terminals, single-width, 42-way 6ES5 497-4UB31

Screw terminals, double-width, 42-way 6ES5 497-4UB12
Screw terminals, double-width, 25-way 6ES5 497-4UB22

Screw terminals, double-width, 20-way 6ES5 497-4UB42

IP 257 6ES5 257-4UA11

Local bus for DI/DQ 482 6ES5 751-2AA11

Mini spring contacts (250 single contacts) 6XX3070

Crimping tool 6XX3071
Ferrules to DIN 46228
Extraction (releasing) tool 6ES5 497-4UC11
Set of labels for addresses 6ES5 497-4UD11
Coding jumper (to change over the enable mode) W79070-G2602-N2
Fuse for 6ES5 456-4UB12 W79054-L1021-F350
3.5 A, fast/250 V UL/CSA

System Manual
A-6 C79000-G8576-C199-06
 Appendix

Fuse for 6ES5 455-4UA12 and 6ES5 455-4UA12 W79054-L1011-F630

6.3 A, fast/250 V
Fuse for 6ES5 482-4UA11 W79054-M1041-T630
6.3 A/125 V
Light guide K for front connector with crimp ter- 6ES5 497-4UL11
minal
Light guide S for front connector with screw ter- 6ES5 497-4UL21
minal

For Chapter 9
Analog Input/Output Modules
Modules Adhesive Labels
6ES5 460-4UA13 C79451-A3079-C723
6ES5 463-4UA12 C79451-A3079-C746
6ES5 465-4UA12 C79451-A3079-C748
6ES5 470-4UA12 C79451-A3079-C724
6ES5 470-4UB12 C79451-A3079-C725
6ES5 470-4UC12 C79451-A3079-C726
Front Connectors
Crimp terminals, single-width, 42-way 6ES5 497-4UA12
Crimp terminals, double-width, 42-way 6ES5 497-4UA22
Crimp terminals, double-width, 20-way 6ES5 497-4UA42

Screw terminals, single-width, 42-way 6ES5 497-4UB31

Screw terminals, double-width, 42-way 6ES5 497-4UB12
Screw terminals, double-width, 25-way 6ES5 497-4UB22

Screw terminals, double-width, 20-way 6ES5 497-4UB42

Mini spring contacts (250 single contacts) 6XX3070

Crimping tool 6XX3071
Ferrules to DIN 46228
Extraction (releasing) tool 6ES5 497-4UC11
Set of labels for addresses 6ES5 497-4UD11

System Manual
C79000-G8576-C199-06 A-7
Appendix

Range Cards
Modules Features Range Card
6ES5 460-4UA13 $ 12.5/50/500mV/Pt 100 6ES5 498-1AA11
6ES5 465-4UA12 $ 50/500mV/Pt 100 6ES5 498-1AA11
$ 1V 6ES5 498-1AA21
$ 5V 6ES5 498-1AA61
$ 10V 6ES5 498-1AA31
$ 20mA 6ES5 498-1AA41
4 to 20mA/2-wire 6ES5 498-1AA51
transducer
4 to 20mA/4-wire 6ES5 498-1AA71
transducer

System Manual
A-8 C79000-G8576-C199-06
 Appendix

Further Reading

Hans Berger:
Automating with the SIMATIC S5-135U
Siemens AG A19100-L531-F505-X-7600

Hans Berger:
Automating with the SIMATIC S5-155U
Siemens AG A19100-L531-F177-X-7600

Catalog ST 54.1 Programmable Controllers

S5-135U, S5-155U and S5-155H

Catalog ST 50 SIMATIC S5
Programmable Controllers

Catalog ST 59 SIMATIC S5
Programmers

Catalogs ET 1.4 and ET 3 6EV1 Power Supply Units

Guidelines for Handling

Electrostatically Sensitive Devices:
at the end of this manual

S5-155U Programmable Controller

CPU 948
Programming Guide
6ES5 998-3PR21

System Manual
C79000-G8576-C199-06 A-9
Appendix

S5-135U Programmable Controller

CPU 928B
Programming Guide
6ES5 998-2PR21

S5-135U Programmable Controller

CPU 928B
Communication
6ES5 998-2UL22

S5-135U Programmable Controller

CPU 928
Programming Guide
6ES5 998-1PR21

S5-135U Programmable Controller

CPU 922
Programming Guide
6ES5 998-0PR21

STEP 5
C79000-G8576-C140

IP 257
6ES5 998-2EA21

System Manual
A-10 C79000-G8576-C199-06
Guidelines for Handling
Electrostatically-Sensitive Devices (ESD) B
Chapter Section Contents Page
Overview B.1 What is ESD? B-2
B.2 Electrostatic Charging of Persons B-3
B.3 General Protective Measures Against Electrostatic Discharge B-4
Damage

System Manual
C79000-G8576-C199-06 B-1
Guidelines for Handling Electrostatically-Sensitive Devices (ESD)

B.1 What is ESD?

Definition All electronic modules are equipped with large-scale integrated ICs or
components. Due to their design, these electronic elements are very sensitive
to overvoltages and thus to any electrostatic discharge.
These Electrostatically- Sensitive Devices are commonly referred to by the
abbreviation ESD.
Electrostatically-sensitive devices are labeled with the following symbol:

Caution
! Electrostatically-sensitive devices are subject to voltages that are far below the voltage
values that can still be perceived by human beings. These voltages are present if you
touch a component or the electrical connections of a module without previously being
electrostatically discharged. In most cases, the damage caused by an overvoltage is not
immediately noticeable and results in total damage only after a prolonged period of
operation.

System Manual
B-2 C79000-G8576-C199-06
 Guidelines for Handling Electrostatically-Sensitive Devices (ESD)

B.2 Electrostatic Charging of Persons

Charging Every person with a non-conductive connection to the electrical potential of

its surroundings can be charged electrostatically.
Figure B-1 shows you the maximum values for electrostatic voltages which
can build up on a person coming into contact with the materials indicated in
the figure. These values are in conformity with the specifications of
IEC 801-2.

Voltage in kV
(kV)
16 1 Synthetic material
15
14 2 Wool
13
3 Antistatic material, for
12 example, wood, or
11 1 concrete
10
9
8
7
6
5
4 2
3
2
3
1
5 10 20 30 40 50 60 70 80 90 100 Relative air humidity in %

Figure B-1 Electrostatic Voltages which can Build up on a Person

System Manual
C79000-G8576-C199-06 B-3
Guidelines for Handling Electrostatically-Sensitive Devices (ESD)

B.3 General Protective Measures Against Electrostatic Discharge

Damage

Ensure Sufficient Make sure that the personnel, working surfaces, and packaging are
Grounding sufficiently grounded when handling electrostatically-sensitive devices.
You thus avoid electrostatic charging.

Avoid Direct You should touch electrostatically-sensitive devices only if it is unavoidable

Contact (for example, during maintenance work). Hold modules without touching the
pins of components or printed conductors. In this way, the discharged energy
cannot affect the sensitive devices.
If you have to carry out measurements on a module, you must discharge your
body before you start the measurement by touching grounded metallic parts.
Use grounded measuring devices only.

System Manual
B-4 C79000-G8576-C199-06
Index

A Broken wire signal, 9-8, 9-54

Bus arbitration, 6-15, 6-16, 6-18, 6-19
Address label, 8-20
Bus enable, 6-16, 6-19
Addressing
Bus enable assignment, 6-16
cyclic sampling, 9-12, 9-58, 9-104
sequence, 6-19
selective sampling, 9-12, 9-58, 9-104
Bus enable signal, 6-16, 6-19
Addressing switch
Bus lock signal, 6-20
analog input/output modules, 9-4, 9-35,
Bus PCB, 4-3
9-50, 9-98
digital input/output modules, 8-4
Air filter, 4-64
Application C
COR 923A, 6-15 Cabinet assembly, for EMC, 3-8
COR 923C, 6-18 Cable clamps, 3-15
CPU 922, 5-71 Cable duct, 4-3
CPU 928, 5-62 Cables, power supply units, 4-27
CPU 928 -3UA21, 5-54 Cabling, fan submodule, 4-73
CPU 928B, 5-42 Central controller, installing, 4-6
CPU 928B -3UB21, 5-30 Central grounding, 3-23
CPU 948, 5-17 Central programmer connection, 6-18
CPU 948 -3UA13, 5-2 Centrally grounded supply, 3-23
CPU 948 -3UA23, 5-2 Checklist, EMC measures, 3-18
Auxiliary submodule, 15 V, 4-63 Communication flag area, 6-7
Communication flag areas, setting, 6-6
Communication flags, 6-15, 6-16, 6-20
B Communication memory, 6-15, 6-16, 6-18
addressing, 6-6, 6-7
Backup battery
Compensating box, connection, 9-19, 9-63
power supply units, 4-31
Connecting loads, 9-109, 9-110
PSU 6ES5 955-3NA12, 4-66
Connector assignment
RAM submodules 377, 5-87
6ES5 955-3NA12 power supply unit, 11-10
Base address, 6-25
coordinator 923 A, 11-16
setting, 6-22
coordinator 923 C, 11-17
Basic functions, power supply units, 4-20
CPU 922, 11-14
BASP
CPU 928, 11-13
analog input modules, 9-9, 9-55, 9-102
CPU 928B, 11-12
digital input modules, 8-3
CPU 948, 11-11
digital output modules, 8-3
front connector of the CPUs (PG interface),
BASP signal, 6-14
11-15
Battery voltage
front connectors of the coordinators, 11-18
power supply units, 4-21
IMs, 11-19
PSU 6ES5 955-3NA12, 4-58, 4-70
power supply units, 11-9
Broken wire monitoring, extended Pt 100
PSU 6ES5 955-3NA12, 11-10
measuring range, 9-22, 9-66

System Manual
C79000-G8576-C199-06 Index-1
Index

Connector assignments, power supply units, D

11-9
Data format, setting, 9-48, 9-81
Connector assignments of the backplane
Design
EU 183U, EU 184U, EU 187U, 11-5
COR 923A, 6-15
EU 185U, 11-6
COR 923C, 6-19
S5-135U/155U CC, 11-2
CPU 922, 5-71
Controls and indicators
CPU 928, 5-62
COR 923C, 6-23
CPU 928 -3UA21, 5-54
CPU 922, 5-74
CPU 928B, 5-42
CPU 928, 5-65
CPU 928B -3UB21, 5-30
CPU 928 -3UA21, 5-57
CPU 948, 5-17
CPU 928B, 5-35, 5-47
CPU 948 -3UA13, 5-2
CPU 948, 5-20
CPU 948 -3UA23, 5-2
CPU 948 -3UA13, 5-6
Differential measurement, 9-78, 9-89
CPU 948 -3UA23, 5-6
Distributed arrangement of monitor and PLC,
IM 300, 7-4
3-30
IM 301, 7-10
Double addressing, 6-6, 6-21
IM 304, 7-14
PSU 6ES5 955-3NA12, 4-58
Coordinator
location of jumper sockets, 6-4 E
modes, 6-13 Electrical connection with process I/Os, 3-22
normal operation, 6-13 Electromagnetic compatibility, 3-2
stop in the event of fault, 6-13 EMC, basic rules, 3-5
test mode, 6-14 EMC measures, specific, 3-16
COR 923A, 6-6 Enable, switching off, 9-5
application, 6-15 Enable circuit, digital input/output modules, 8-5
design, 6-15 Enable input, 9-5, 9-36, 9-51, 9-99
mode switch, 6-17 switching off, 9-99
principle of operation, 6-16 Enable inputs, functioning, 8-6
COR 923C, 6-6, 6-12, 6-15 Enable switching off, 9-36, 9-51
activating addresses, 6-25 Enable time, 6-16, 6-19
application, 6-18 Equipotential bonding conductor, 3-13, 9-17
controls, 6-23 Example of an electrical installation, 3-22
design, 6-19
indicators, 6-23
principle of operation, 6-19 F
setting the coordination section, 6-24
Fan, 4-3
setting the DIL switches, 6-24
failure, 4-50
setting the PG multiplexer, 6-25
removing, 4-33
switching off the coordination signal, 6-27
replacing, 4-41, 4-67
Coupling
Fan lock, releasing, 4-33
capacitive coupling, 3-4
Fan submodule
direct coupling, 3-4
connecting, 4-72
inductive coupling, 3-4
setting, 4-72
mechanisms, 3-3
Fault detection, monitoring module, 10-4
radiated interference, 3-4
Fault indications
Current limiting, two-wire transducers, 9-46
power supply units, 4-36
Current sensors, connection, 9-17
PSU 6ES5 955-3NA12, 4-65
Current/voltage measurement, 9-78
Fault LEDs, fan submodule 6ES5 988-3LA11,
Cyclic program processing, 6-13, 6-14
4-73
Cyclic sampling, 9-8, 9-54

System Manual
Index-2 C79000-G8576-C199-06
 Index

Fault register, 6-27 Interface submodules

FB 40 function block, 9-9, 9-55, 9-102 installing, 5-93
Filter mat, replacing, 4-46 PG submodule, 5-95
Filter subdrawer, fitting, 4-34 removing, 5-94
Floating modules, 3-26 RS422 A/485 submodule, 5-112
Four-wire circuit, 9-110 SINEC L1 submodule, 5-118
Front connector, 4-9, 6-19 TTY submodule, 5-106
463 analog input module, 9-49 use, 5-92
466 analog input module, 9-97 V.24 submodule, 5-99
470 analog input module, 9-98 Interfaces
Front panel, monitoring module, 10-2 CPU 928B, 5-43
Front plate, 6-19 CPU 928B -3UB21, 5-31
CPU 922, 5-74 CPU 948, 5-13, 5-27
CPU 928, 5-65 CPU 948 -3UA13, 5-13
CPU 928 -3UA21, 5-57 CPU 948 -3UA23, 5-13
CPU 928B, 5-47 Interference, 3-2
CPU 928B -3UB21, 5-35 measures for interference-free operation,
CPU 948, 5-20 3-16
fan submodule 6ES5 998-3LA11, 4-70 Interference source, 3-4
power supply units, 4-21 Interference-free installation
PSU 6ES5 955-3NA12, 4-58 centralized interface circuits, 3-27
Front plate width, 6-15, 6-19 distributed interface circuits, 3-27
Full duplex operation, RS422 A/485 submodule,
5-112
Fusing, 3-20, 8-24 J
Jumper settings
COR 923A, 6-4
G COR 923C, 6-4, 6-27
Global memory access, 6-15 CPU 928B, 5-33, 5-45
Grounding CPU 948, 5-18
distributed arrangement of monitor and PLC, CPU 948 -3UA13, 5-3
3-30 CPU 948 -3UA23, 5-3
inactive metal parts, 3-5, 3-7 IM 300-3, 7-5
PLCs, 3-22 IM 300-5, 7-6, 7-7
IM 301, 7-11
IM 304, 7-15
I IM 314, 7-17
PG submodule, 5-97
I/O byte, changeover, DI/DQ 482, 8-13
power supply units, 4-25
I/O modules, 8-2
PSU 6ES5 955-3NA12, 4-60
analog input/output modules, 9-2
RS422 A/485 submodule, 5-114
digital input/output modules, 8-2
SINEC L1 submodule, 5-120
Individual locking, 4-3
TTY submodule, 5-108
Inductive loads, 8-25
V.24 submodule, 5-101
Inputs/outputs
fan submodule 6ES5 988-3LA11, 4-70
power supply units, 4-21
PSU 6ES5 955-3NA12, 4-59 L
Installing, monitoring, 10-2 Labeling field, 8-14, 9-10, 9-39, 9-56, 9-102
Interchange of data, 6-15

System Manual
C79000-G8576-C199-06 Index-3
Index

LEDs Memory cards 374, 5-80

COR 923C, 6-23 erasing, 5-80
CPU 922, 5-76 inserting, 5-80
CPU 928 , 5-67 programming, 5-80
CPU 928 -3UA21, 5-58 Memory page, 6-20
CPU 928B, 5-37, 5-49 Memory submodules 376, 5-82
CPU 948, 5-23 erasing, 5-82
CPU 948 -3UA13, 5-9 inserting, 5-82
CPU 948 -3UA23, 5-9 programming, 5-82
digital input/output modules, 8-4 Memory submodules 377, 5-84
fan submodule 6ES5 99-3LA11, 4-70 backup battery, 5-87
monitoring module, 10-2 inserting, 5-88
power supply units, 4-36 programming, 5-84
PSU 6ES5 955-3NA12, 4-65 removing, 5-89
LEDs and controls, power supply units, 4-22 with battery backup, 5-85
LEDs for fault indication and signaling Mode, setting, 9-31, 9-73
CPU 922, 5-77 Mode switch, 6-17, 6-23, 9-4, 9-35, 9-50, 9-98
CPU 928, 5-68 coordinator, 6-13
CPU 928B, 5-49 COR 923A, 6-17
CPU 928 -3UA21, 5-59 COR 923C, 6-23
CPU 928B -3UB21, 5-37 CPU 922, 5-75
CPU 948, 5-23 CPU 928 , 5-66
CPU 948 -3UA13, 5-9 CPU 928 -3UA21, 5-58
CPU 948 -3UA23, 5-9 CPU 928B , 5-48
Lightning protection, 3-12 CPU 928B -3UB21, 5-36
Lithium battery CPU 948, 5-21
fitting in PSU, 4-31 CPU 948 -3UA13, 5-7
replacing, 4-41 CPU 948 -3UA23, 5-7
Load circuit, disconnecting, 8-26 Module, mounting width, 4-8
Load power supply, 3-19 Momentary-contact mode switch
Load voltage, 9-46 CPU 922, 5-75
Loads, connection, 9-109 CPU 928 , 5-66
Location of jumpers CPU 928B, 5-48
power supply units, 4-29 CPU 928 -3UA21, 5-58
PSU 6ES5 955-3NA12, 4-60 CPU 928B -3UB21, 5-36
Locking bar, 4-3 CPU 948, 5-21
CPU 948 -3UA13, 5-7
CPU 948 -3UA23, 5-7
M Monitor connection, 3-29
Monitoring for bus assignment, 6-20
Main switch, 3-20
Monitoring function, power supply units, 4-20
Measured-value representation
Mounting in cabinets, 3-8
current measuring range 4 to 20 mA, 9-28,
Mounting on racks, 3-10
9-71
Mounting on walls, 3-10
different measuring ranges, 9-91
Multiplex interface, 6-21
output current/voltage, 9-111
Multiprocessor operation, 1-1, 6-2, 6-15
Pt 100, 9-26, 9-70
starting, 6-3
two’s complement, 9-24, 9-68
startup phase, 6-12
Measurement with respect to ground, 9-78, 9-88
Measuring range
466 analog input module, 9-77
setting, 9-80 N
Measuring range exceeded, 9-8, 9-54 Non-floating modules, 3-25

System Manual
Index-4 C79000-G8576-C199-06
 Index

O Power supply unit, 4-3

connecting, 4-23
Operator functions, 6-15
fitting, 4-30
Outputs, 8-22
removing, 4-28
parallel connection, 8-22
setting, 4-23
Overall reset
switching on, 4-35
CPU 922, 5-75, 5-78
Process inputs, scanning, 8-9, 8-10
CPU 928, 5-69
Process interrupt processing
CPU 928 , 5-66
CPU 922, 5-72
CPU 928B, 5-48
CPU 928, 5-63
CPU 928B , 5-51
CPU 928 -3UA21, 5-55
CPU 928 -3UA21, 5-58, 5-60
CPU 928B, 5-44
CPU 928B -3UB21, 5-36, 5-39
CPU 928B -3UB21, 5-32
CPU 948, 5-21, 5-25
Processing levels
CPU 948 -3UA13, 5-7, 5-11
CPU 922, 5-71
CPU 948 -3UA23, 5-7, 5-11
CPU 928, 5-62
CPU 928 -3UA21, 5-54
CPU 928B, 5-30, 5-42
P CPU 948, 5-17
Page memory, 6-21 CPU 948 -3UA13, 5-2
PG interfaces CPU 948 -3UA23, 5-2
CPU 928B, 5-31, 5-43 Programmable controller
CPU 948, 5-27 power supply, 3-17, 3-23
CPU 948 -3UA13, 5-13 validity check, 4-11
CPU 948 -3UA23, 5-13 Protection, 3-20
PG multiplexer, of COR 923C, 6-21 Pt 100, connection, 9-65
PG MUX, 6-27 Pt 100 measuring range, 9-26
PG submodule, 5-95
Pin assignments
PG submodule, 5-96 Q
RS422 A/485 submodule, 5-113
Quenching circuitry, 8-25
SINEC L1 submodule, 5-119
Quenching devices, selection, connection, 8-26
TTY submodule, 5-107
V.24 submodule, 5-100
Power dissipation, in cabinets, 3-35
Power supplies R
AC, 3-21 Radiated interference, 3-4
centrally grounded, 3-23 Rechargeable battery, connecting, 4-33
control circuits, 3-19 Reference potential, 3-6
grounded, 3-22
load circuits, 3-19
ungrounded, 3-24
Power supply
failure, 4-49
for programmable controllers, 3-17
types, 4-19

System Manual
C79000-G8576-C199-06 Index-5
Index

Removing and inserting Shielding, 3-14

CPU 922 , 5-73 distributed arrangement of monitor and PLC,
CPU 928 -3UA21, 5-56 3-30
CPU 928 , 5-64 Shielding of cables/lines, 3-14
CPU 928B, 5-45 Short-circuit protection, 8-24
CPU 928B -3UB21, 5-33 Signal lines, connection, 8-21, 9-16, 9-45, 9-62,
CPU 948, 5-19 9-87, 9-108
CPU 948 -3UA13, 5-4 Signal output, 8-3
CPU 948 -3UA23, 5-4 Signaling circuits
modules, 8-18, 9-13, 9-42, 9-59, 9-84, 9-105 fan submodule, 4-72
monitoring module, 10-6 of the power supply units, 4-26
Replacing the battery Signaling function, power supply units, 4-20
power supply units, 4-41 SINEC H1 LAN, routing of cables, 3-11
PSU 6ES5 955-3NA12, 4-66 SINEC L1 LAN, routing of cables, 3-11
RESET SINEC L1 submodule, 5-118
automatic, 6-13 SINEC L2 LAN, routing of cables, 3-11
CPU 948, 5-21 Slot, 6-22
Reset setting the number of CPU slots, 6-6
CPU 922, 5-75, 5-78 Slots, slots required by CPU, 1-1, 6-2
CPU 928, 5-69 Standard connecting cables
CPU 928 , 5-66 PG submodule, 5-98
CPU 928 -3UA21, 5-58, 5-60 RS422 A/485 submodule, 5-117
CPU 928B, 5-48 TTY submodule, 5-109
CPU 928B -3UB21, 5-36, 5-39, 5-51 V.24 submodule, 5-102
CPU 948 -3UA13, 5-7, 5-11 Start, 6-13
CPU 948 -3UA23, 5-7, 5-11 manual, 6-13
Resistance thermometers, connection, 9-20 Start address, 8-15
Restart, 5-51 Start address, subaddress, analog input/output
automatic, 6-13 modules, 9-10, 9-40, 9-56, 9-103
CPU 922, 5-75, 5-78 Startup
CPU 928, 5-69 CPU 922, 5-78
CPU 928 , 5-66 CPU 928 , 5-69
CPU 928B, 5-48 CPU 928 -3UA21, 5-60
CPU 928 -3UA21, 5-58 CPU 928B, 5-39, 5-51
CPU 928B -3UB21, 5-36, 5-39 CPU 948, 5-25
CPU 948, 5-21, 5-25 CPU 948 -3UA13, 5-11
CPU 948 -3UA13, 5-7, 5-12 CPU 948 -3UA23, 5-11
CPU 948 -3UA23, 5-7, 5-12 Startup of CC, brief instructions, 4-10
Routing of lines, 3-5 Startup of the programmable controller, 4-10
RS422 A/485 submodule, 5-112 Station number, 6-22
Rules for ensuring EMC, 3-5 Status indicators
CPU 922, 5-76
CPU 928 , 5-67
S CPU 928B, 5-49
CPU 928 -3UA21, 5-58
S5 bus, 6-16
CPU 928B -3UB21, 5-37
Selective sampling, 9-9, 9-54
CPU 948, 5-22
Semaphores, 6-16, 6-20
CPU 948 -3UA13, 5-8
Sensors, connection, 9-48, 9-89
CPU 948 -3UA23, 5-8
Serial interface, 6-21
Stop state, 6-13
selection method, 6-22

System Manual
Index-6 C79000-G8576-C199-06
 Index

Supply line L+ and L, disconnecting, 8-26 Time-controlled program processing, 9-9, 9-55
Systems, installation to EMC requirements, 3-2 Time-division multiplex operation, 6-16, 6-19
Transducers, connection, 9-23, 9-67
Tripping current, 9-8, 9-54
T TTY submodule, 5-106
Two-wire switches, 8-27
Technical specifications
374 memory cards, 5-81
376 memory submodules, 5-83
377 memory submodules, 5-90 V
420 digital input module, 8-30 V.24 interface, 5-99
430 digital input module, 8-32 V.24 submodule, 5-99
431 digital input module, 8-34 Vector register, 6-21
432 digital input module, 8-36 Voltage selector switch, setting, 4-34
434 digital input module, 8-39 Voltage sensors, connection, 9-17
435 digital input module, 8-42
436-4UA12 digital input module, 8-44
436-4UB12 digital input module, 8-46 W
441 digital output module, 8-48
Wall mounting, 3-10
451 digital output module, 8-50
Wiring, 8-19
453 digital output module, 8-52
454 digital output module, 8-54
455 digital output module, 8-56
456-4UA12 digital output module, 8-58
456-4UB12 digital output module, 8-60
457 digital output module, 8-62
458-4UA12 digital output module, 8-64
458-4UC11 digital output module, 8-67,
8-69
coordinators, 6-28
CPU 922, 5-79
CPU 928, 5-70
CPU 928 -3UA21, 5-61
CPU 928B, 5-40, 5-52
CPU 948, 5-28
CPU 948 -3UA13, 5-15
CPU 948 -3UA23, 5-15
expansion units, 4-18
fan submodule 6ES5 998-3LA11, 4-74
interface modules, 7-20
interface submodules, 5-122
monitoring module, 10-14
power supply units, 4-51
PSU 6ES5 955-3NA12, 4-68

System Manual
C79000-G8576-C199-06 Index-7
Index

System Manual
Index-8 C79000-G8576-C199-06
Siemens AG
A&D AS E 81

Oestliche Rheinbrueckenstr. 50
D-76181 Karlsruhe
Federal Republic of Germany

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