Preface, Contents

SIMATIC
1
General Technical Specifications
Automation System S7-400 2
Racks
Module Specifications
3
Power Supply Modules
Reference Manual 4
Digital Modules

5
Analog Modules

6
Interface Modules

7
IM 463-2
PROFIBUS DP Master Interface 8
IM 467/IM 467 FO
Cable Duct and Fan Subassem- 9
blies

10
RS 485 Repeater

Appendices

Glossary, Index

This manual is part of the documentation

package with the order number
6ES7498-8AA04-8BA0

Edition 11/2004
A5E00267842-02
Safety Guidelines
This manual contains notices intended to ensure personal safety, as well as to protect the products and
connected equipment against damage. These notices are highlighted by the symbols shown below and
graded according to severity by the following texts:
Danger
! indicates that death, severe personal injury or substantial property damage will result if proper precautions
are not taken.

Warning
! indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.

Caution
! indicates that minor personal injury can result if proper precautions are not taken.

Caution
indicates that property damage can result if proper precautions are not taken.

Notice
draws your attention to particularly important information on the product, handling the product, or to a
particular part of the documentation.

Qualified Personnel
Only qualified personnel should be allowed to install and work on this equipment. Qualified persons are
defined as persons who are authorized to commission, to ground and to tag circuits, equipment, and
systems in accordance with established safety practices and standards.
Correct Usage
Note the following:

Warning
! This device and its components may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other manufacturers which
have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.

Trademarks
SIMATIC®, SIMATIC HMI® and SIMATIC NET® are registered trademarks of SIEMENS AG.
Third parties using for their own purposes any other names in this document which refer to trademarks
might infringe upon the rights of the trademark owners.

Copyright Siemens AG 2004 All rights reserved Disclaim of Liability

The reproduction, transmission or use of this document or its We have checked the contents of this manual for agreement
contents is not permitted without express written authority. with the hardware and software described. Since deviations
Offenders will be liable for damages. All rights, including rights cannot be precluded entirely, we cannot guarantee full
created by patent grant or registration of a utility model or agreement. However, the data in this manual are reviewed
design, are reserved. regularly and any necessary corrections included in
subsequent editions. Suggestions for improvement are
Siemens AG welcomed.
Bereich Automation and Drives
Geschaeftsgebiet Industrial Automation Systems Siemens AG 2004
Postfach 4848, D- 90327 Nuernberg Technical data subject to change.
Siemens Aktiengesellschaft A5E00267842-02
Preface

Purpose of the Manual

The manual contains reference information on operator actions, descriptions of
functions and technical specifications of the central processing units, power supply
modules and interface modules of the S7-400.
How to configure, assemble and wire these modules in an S7-400 system is
described in the installation manuals for each system.

Required Basic Knowledge

You will need a general knowledge of automation to understand this manual.
In addition, you are required to know how to use computers or devices with similar
functions (e. g. programming devices) under Windows 2000 / XP operating
systems. Since S7-400 is configured with the STEP 7 basic software, you have to
have a good working knowledge of the software. You can acquire this knowledge in
the manual “Programming with STEP 7”. Read the notes on the safety of electronic
controllers in the appendix of the Installation manual – especially when using a
S7-400 in safety-relevant areas.

Target Group
This manual is aimed at people with the required qualifications to commission,
operate and maintain the products described.

Where is this Manual valid?

The manual is valid for the S7-400 programmable controller.

Certification
You can find details on the certificates and approvals in the reference manual
“General Technical Data”.

Place of this Documentation in the Information Environment

This manual forms part of the S7-400 documentation.

System Documentation Package

S7-400 • S7-400 Programmable Controllers; Hardware and Installation
• S7-400 Programmable Controllers; Module Specifications
• Automation System S7-400 CPU Data
• S7-400 Instruction List

Automation System S7-400 Module Specifications

A5E00267842-02 iii
Preface

Finding Your Way

To help you find special information quickly, the manual contains the following
access aids:
• At the start of the manual you will find a complete table of contents and a list of
the diagrams and tables that appear in the manual.
• You will find a glossary in the appendix at the end of the manual. The glossary
contains definitions of the main technical terms used in the manual.
• At the end of the manual you will find a comprehensive index which gives you
rapid access to the information you need.

Recycling and Disposal

The S7-400 is environmentally friendly and can thus recyclable. Consult a certified
disposal agency for electronics junk to recycle and dispose of your old equipment
in an environmentally friendly manner.

Further Support
If you have any technical questions, please get in touch with your Siemens
representative or agent responsible.
http://www.siemens.com/automation/partner

A guide for the technical documentation for the various SIMATIC products and
systems is found under:
http://www.siemens.de/simatic-tech-doku-portal
You find the online catalog and order system under:
http://mall.automation.siemens.com/

Training Centers
Siemens offers a number of training courses to familiarize you with the SIMATIC S7
automation system. Please contact your regional training center or our central
training center in D 90327 Nuremberg, Germany for details:
Telephone: +49 (911) 895-3200.
Internet: http://www.sitrain.com

Automation System S7-400 Module Specifications

iv A5E00267842-02
 Preface

Technical Support
You can reach the Technical Suport for all A&D products
• Via the Web formula for the Support Request
http://www.siemens.com/automation/support-request
• Phone: + 49 180 5050 222
• Fax:+ 49 180 5050 223
Additional information about our Technical Support can be found on the Internet
pages:
http://www.siemens.com/automation/service.

Service & Support on the Internet

In addition to our documentation, we offer our Know-how online on the internet at:
http://www.siemens.com/automation/service&support
where you will find the following:
• The newsletter, which constantly provides you with up-to-date information on
your products.
• The right documents via our Search function in Service & Support.
• A forum, where users and experts from all over the world exchange their
experiences.
• Your local representative for Automation & Drives.
• Information on field service, repairs, spare parts and more under “Services”.

Automation System S7-400 Module Specifications

A5E00267842-02 v
Preface

Automation System S7-400 Module Specifications

vi A5E00267842-02
Contents

1 General Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Standards and Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Electromagnetic Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.3 Shipping and Storage Conditions for Modules and Backup Batteries . . . 1-11
1.4 Mechanical and Ambient Climatic Conditions for Operating the S7-400 . 1-13
1.5 Information on Insulation Tests, Protection Class and Degree
of Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
2 Racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Function and Structure of the Racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 The Racks UR1; (6ES7400-1TA01-0AA0) and
UR2; (6ES7400-1JA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3 The Rack UR2-H; (6ES7400-2JA00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.4 The Rack CR2; (6ES7401-2TA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.5 The Rack CR3; (6ES7401-1DA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.6 The Racks ER1; (6ES7403-1TA01-0AA0)
and ER2; (6ES7403-1JA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
3 Power Supply Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Common Characteristics of the Power Supply Modules . . . . . . . . . . . . . . . 3-2
3.2 Redundant Power Supply Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Backup Battery (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.4 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.5 Fault/Error Messages via LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.6 Power Supply Module PS 407 4A;
(6ES7407-0DA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.7 Power Supply Modules
PS 407 10A; (6ES7407-0KA01-0AA0) and
PS 407 10A R; (6ES7407-0KR00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.8 Power Supply Module PS 407 20A; (6ES7407-0RA01-0AA0) . . . . . . . . . . 3-22
3.9 Power Supply Module PS 405 4A; (6ES7405-0DA01-0AA0) . . . . . . . . . . . 3-24
3.10 Power Supply Modules
PS 405 10A; (6ES7405-0KA01-0AA0) and
PS 405 10A R; (6ES7405-0KR00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
3.11 Power Supply Modules
PS 405 10A; (6ES7405-0KA02-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
3.12 Power Supply Module PS 405 20A; (6ES7405-0RA01-0AA0) . . . . . . . . . . 3-30

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Contents

4 Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Module Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2 Sequence of Steps from Choosing to Commissioning the Digital Module 4-5
4.3 Digital Module Parameter Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.3.1 Parameters of the Digital Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4.3.2 Parameters of the Digital Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.4 Diagnostics of the Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5 Interrupts of the Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.6 Input Characteristic Curve for Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
4.7 Digital Input Module SM 421; DI 32 x 24 VDC;
(6ES7421-1BL01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
4.8 Digital Input Module SM 421; DI 16 x 24 VDC;
(6ES7421-7BH01-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
4.8.1 Assigning Parameters to the SM 421; DI 16 x 24 VDC . . . . . . . . . . . . . . . . 4-24
4.8.2 Behavior of the SM 421; DI 16 x 24 VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
4.9 Digital Input Module SM 421; DI 16 x 120 VAC;
(6ES7421-5EH00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
4.10 Digital Input Module SM 421; DI 16 x 24/60 VUC;
(6ES7421-7DH00-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4.10.1 Assigning Parameters to the SM 421; DI 16 x 24/60 VUC . . . . . . . . . . . . . 4-34
4.11 Digital Input Module SM 421; DI 16 x 120/230 VUC;
(6ES7 421-1FH00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
4.12 Digital Input Module SM 421; DI 16 x 120/230 VUC;
(6ES7421-1FH20-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
4.13 Digital Input Module SM 421; DI 32 x 120 VUC;
(6ES7421-1EL00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41
4.14 Digital Output Module SM 422;
DO 16 x 24 VDC/2 A; (6ES7422-1BH11-0AA0) . . . . . . . . . . . . . . . . . . . . . . 4-44
4.15 Digital Output Module SM 422;
DO 16 x 20-125 VDC/1.5 A; (6ES7422-5EH10-0AB0) . . . . . . . . . . . . . . . . 4-47
4.15.1 Assigning Parameters to the SM 422; DO 16 x 20-125 VDC/1.5 A . . . . . . 4-51
4.16 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A;
(6ES7422-1BL00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-52
4.17 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A;
(6ES7422-7BL00-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
4.17.1 Assigning Parameters to the SM 422; DO 32 x 24 VDC/0.5 A . . . . . . . . . . 4-59
4.17.2 Behavior of the SM 422; DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . 4-60
4.18 Digital Output Module SM 422; DO 8 x 120/230 VAC/5 A;
(6ES7422-1FF00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
4.19 Digital Output Module SM 422; DO 16 x 120/230 VAC/2 A;
(6ES7422-1FH00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64
4.20 Digital Output Module SM 422; DO 16 x 20-120 VAC/2 A;
(6ES7422-5EH00-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-68
4.20.1 Assigning Parameters to the SM 422; DO 16 x 20-120 VAC/2 A . . . . . . . 4-71

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4.21 Relay Output Module SM 422; DO 16 x 30/230 VUC/Rel. 5 A;

(6ES7422-1HH00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-72
5 Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Module Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.2 Sequence of Steps from Choosing to Commissioning the Analog Modules 5-5
5.3 Analog Value Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.3.1 Analog Value Representation for Analog Input Channels . . . . . . . . . . . . . . 5-7
5.3.2 Analog Value Representation for Analog Output Channels . . . . . . . . . . . . 5-22
5.4 Setting the Measuring Method and Measuring Ranges of the Analog Input
Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
5.5 Behavior of the Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.5.1 Effect of Supply Voltage and Operating Mode . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.5.2 Effect of Range of Values of the Analog Values . . . . . . . . . . . . . . . . . . . . . . 5-31
5.5.3 Effect of Operational Limit and Basic Error Limit . . . . . . . . . . . . . . . . . . . . . 5-32
5.6 Conversion, Cycle, Setting and Response Time of Analog Modules . . . . 5-34
5.7 Analog Module Parameter Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
5.7.1 Parameters of the Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
5.7.2 Parameters of the Analog Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
5.8 Connecting Sensors to Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
5.9 Connecting Voltage Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
5.10 Connecting Current Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
5.11 Connecting Resistance Thermometers and Resistors . . . . . . . . . . . . . . . . 5-49
5.12 Connecting Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52
5.13 Connecting Loads/Actuators to Analog Outputs . . . . . . . . . . . . . . . . . . . . . 5-58
5.14 Connecting Loads/Actuators to Voltage Outputs . . . . . . . . . . . . . . . . . . . . . 5-59
5.15 Connecting Loads/Actuators to Current Outputs . . . . . . . . . . . . . . . . . . . . . 5-61
5.16 Diagnostics of the Analog Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62
5.17 Analog Module Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-66
5.18 Analog Input Module SM 431; AI 8 x 13 Bit; (6ES7431-1KF00-0AB0) . . . 5-68
5.18.1 Commissioning the SM 431; AI 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-72
5.18.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-73
5.19 Analog Input Module SM 431; AI 8 x 14 Bit; (6ES7431-1KF10-0AB0) . . . 5-74
5.19.1 Commissioning the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-81
5.19.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83
5.20 Analog Input Module SM 431; AI 8 x 14 Bit; (6ES7431-1KF20-0AB0) . . . 5-88
5.20.1 Commissioning the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-92
5.20.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-94
5.21 Analog Input Module SM 431; AI 16 x 13 Bit; (6ES7431-0HH00-0AB0) . 5-97
5.21.1 Commissioning the SM 431; AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-102
5.21.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-103

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5.22 Analog Input Module SM 431; AI 16 x 16 Bit; (6ES7431-7QH00-0AB0) . 5-105

5.22.1 Commissioning the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-112
5.22.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-115
5.23 Analog Input Module SM 431; AI 8 x RTD x 16 Bit;
(6ES7431-7KF10-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-120
5.23.1 Commissioning the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . . . . . . . 5-125
5.23.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-128
5.24 Analog Input Module SM 431; AI 8 x 16 Bit; (6ES7431-7KF00-0AB0) . . . 5-129
5.24.1 Commissioning the SM 431; AI 8 x16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-135
5.24.2 Measuring Methods and Measuring Ranges of the SM 431;
AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-139
5.25 Analog Output Module SM 432; AO 8 x 13 Bit; (6ES7432-1HF00-0AB0) 5-141
5.25.1 Commissioning the SM 432; AO 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-145
5.25.2 Output Ranges of the Analog Output Module SM 432; AO 8 x 13 Bit . . . . 5-145
6 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 Common Features of the Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2 The Interface Modules
IM 460-0; (6ES7460-0AA01-0AB0) and IM 461-0;
(6ES7461-0AA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6.3 The Interface Modules IM 460-1; (6ES7460-1BA01-0AB0) and IM 461-1;
(6ES7461-1BA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6.4 The Interface Modules IM 460-3; (6ES7460-3AA01-0AB0) and IM 461-3;
(6ES7461-3AA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
6.5 The Interface Modules
IM 460-4; (6ES7460-4AA01-0AB0) and
IM 461-4; (6ES7461-4AA01-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
7 IM 463-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 Using SIMATIC S5 Expansion Units in an S7-400 . . . . . . . . . . . . . . . . . . . . 7-2
7.2 Rules for Connecting S5 Expansion Units . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7.3 Operator Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
7.4 Installing and Connecting the IM 463-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
7.5 Setting the Operating Modes of the IM 314 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
7.6 Configuring S5 Modules for Operation in the S7-400 . . . . . . . . . . . . . . . . . 7-10
7.7 Pin Assignments of the 721 Connecting Cable . . . . . . . . . . . . . . . . . . . . . . 7-11
7.8 Terminating Connector for IM 314 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
7.9 Technical Specifications (6ES7463-2AA00-0AA0) . . . . . . . . . . . . . . . . . . . . 7-14

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8 PROFIBUS DP Master Interface IM 467/IM 467 FO . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1 PROFIBUS DP Master Interface IM 467/IM 467 FO . . . . . . . . . . . . . . . . . . 8-2
8.1.1 Indicators and the Mode Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
8.3 Connection to PROFIBUS DP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
8.3.1 Bus Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
8.3.2 Optical Connection to PROFIBUS DP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.3.3 Connecting a Fiber-Optic Cable to the IM 467 FO . . . . . . . . . . . . . . . . . . . . 8-9
8.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
8.4.1 Technical Specifications of the IM 467 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
8.4.2 Technical Specifications of the IM 467 FO . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
9 Cable Duct and Fan Subassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.1 Fan Monitoring in the Fan Subassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
9.2 Cable Duct; (6ES7408-0TA00-0AA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9.3 The 120/230 VAC Fan Subassembly; (6ES7408-1TB00-0XA0) . . . . . . . . 9-5
9.4 The 24 VDC Fan Subassembly; (6ES7408-1TA00-0XA0) . . . . . . . . . . . . . 9-7
10 RS 485 Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
10.1 Application and Characteristics (6ES7972-0AA01-0XA0) . . . . . . . . . . . . . 10-2
10.2 Appearance of the RS 485 Repeater; (6ES7972-0AA01-0XA0) . . . . . . . . 10-3
10.3 RS 485 Repeater in Ungrounded and Grounded Operation . . . . . . . . . . . 10-4
10.4 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6
A Parameter Sets for Signal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
A.1 How to Assign the Parameters for Signal Modules in the User Program . A-2
A.2 Parameters of the Digital Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A.3 Parameters of the Digital Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
A.4 Parameters of the Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
B Diagnostic Data of the Signal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
B.1 Evaluating the Diagnostic Data of the Signal Modules in the
User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
B.2 Structure and Contents of Diagnostic Data Bytes 0 and 1 . . . . . . . . . . . . . B-3
B.3 Diagnostic Data of the Digital Input Modules as of Byte 2 . . . . . . . . . . . . . B-4
B.4 Diagnostic Data of the Digital Output Modules as of Byte 2 . . . . . . . . . . . . B-8
B.5 Diagnostic Data of the Analog Input Modules as of Byte 2 . . . . . . . . . . . . . B-14
C Spare Parts and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

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D Guidelines for Handling Electrostatic Sensitive Devices (ESD) . . . . . . . . . . . . . D-1

D.1 What is ESD? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
D.2 Electrostatic Charging of Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
D.3 General Protective Measures Against Electrostatic Discharge Damage . D-4
E List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glossary-1
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

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Figures
1-1 Power supply to the backup battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2-1 Structure of a Rack with 18 Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-2 Dimensions of the UR1 18-Slot or UR2 9-Slot Rack . . . . . . . . . . . . . . . . . . 2-3
2-3 Rack Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-4 CR2 Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-5 CR3 Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-6 ER1 Rack with 18 Slots and ER2 Rack with 9 Slots . . . . . . . . . . . . . . . . . . 2-8
3-1 Controls and Indicators on the PS 407 20A . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3-2 Controls and Indicators of the PS 407 4 A . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3-3 Controls and Displays of the PS 407 10A and PS 407 10A R . . . . . . . . . . 3-20
3-4 Controls and Indicators of the PS 407 20 A . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
3-5 Controls and Indicators of the PS 405 4 A . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
3-6 Controls and Displays of the PS 405 10A and PS 405 10A R . . . . . . . . . . 3-26
3-7 Controls and Displays of the PS 405 10A . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
3-8 Controls and Indicators of the PS 405 20 A . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
4-1 Input Characteristic Curve for Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
4-2 Terminal Assignment and Block Diagram of the SM 421; DI 32 x 24 VDC 4-18
4-3 Terminal Assignment and Block Diagram of the SM 421; DI 16 x 24 VDC 4-21
4-4 Terminal Assignment Diagram for the Redundant Supply of Sensors of the
SM 421; DI 16 x 24 VDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
4-5 Terminal Assignment Diagram of the SM 421; DI 16 x 120 VDC . . . . . . . 4-29
4-6 Terminal Assignment and Block Diagram of the SM 421;
DI 16 x 24/60 VUC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
4-7 Circuit as for Active High or Active Low Input . . . . . . . . . . . . . . . . . . . . . . . . 4-35
4-8 Terminal Assignment and Block Diagram of the SM 421;
DI 16 x 120/230 VUC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
4-9 Terminal Assignment and Block Diagram of the SM 421;
DI 16 x 120/230 VUC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
4-10 Terminal Assignment and Block Diagram of the SM 421;
DI 32 x 120 VUC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
4-11 Terminal Assignment and Block Diagram of the SM 422;
DO 16 24 VDC/2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
4-13 Terminal Assignment and Block Diagram of the SM 422;
DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53
4-14 Terminal Assignment and Block Diagram of the SM 422;
DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
4-15 Terminal Assignment and Block Diagram of the SM 422;
DO 8 x 120/230 VAC/5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-62
4-16 Terminal Assignment and Block Diagram of the SM 422;
DO 16 x 120/230 VAC/2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
4-17 Terminal Assignment Diagram of the SM 422;
DO 16 x 20-120 VAC/2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
4-18 Terminal Assignment and Block Diagram of the SM 422;
DO 16 x 30/230 VUC/Rel. 5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73
5-1 Levering the Measuring Range Module out of the Analog Input Module . 5-28
5-2 Inserting the Measuring Range Module into the Analog Input Module . . . 5-29
5-3 Example of the Relative Error of an Analog Output Module . . . . . . . . . . . . 5-33
5-4 Scan Time of an Analog Input or Output Module . . . . . . . . . . . . . . . . . . . . . 5-34
5-5 Example of the Influence of Smoothing on the Step Response . . . . . . . . . 5-36
5-6 Settling and Response Times of the Analog Output Channels . . . . . . . . . 5-37
5-7 Connecting Isolated Sensors to an Isolated AI . . . . . . . . . . . . . . . . . . . . . . . 5-43
5-8 Connecting Non-Isolated Sensors to an Isolated AI . . . . . . . . . . . . . . . . . . 5-44
5-9 Connecting Voltage Sensors to an AI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
5-10 Connecting Two-Wire Transmitters to an Isolated AI . . . . . . . . . . . . . . . . . 5-47

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5-11 Connecting Two-Wire Transmitters to an SM 431; 8 x 13 Bit . . . . . . . . . . . 5-47

5-12 Connecting Four-Wire Transmitters to an AI . . . . . . . . . . . . . . . . . . . . . . . . . 5-48
5-13 Connecting Four-Wire Transmitters to an SM 431; 8 x 13 Bit . . . . . . . . . . 5-48
5-14 Four-Conductor Connection of Resistance Thermometers on an AI . . . . 5-50
5-15 Three-Wire Connection of Resistance Thermometers to an AI . . . . . . . . . 5-51
5-16 Two-Wire Connection of Resistance Thermometers to an AI . . . . . . . . . . 5-51
5-17 Design of Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52
5-18 Connection of Thermocouples without Compensation or Using
the Reference Temperature Value to an Isolated AI . . . . . . . . . . . . . . . . . . 5-55
5-19 Connection of a Thermocouple with Reference Junction
(Order No. M72166-xxx00) to an Isolated AI . . . . . . . . . . . . . . . . . . . . . . . . 5-56
5-20 Connection of Thermocouples of the Same Type with External Compensation
by Means of a Resistance Thermometer, Connected to Channel 0 . . . . . 5-57
5-21 Connecting Loads to a Voltage Output of an Isolated AO over a
Four-Conductor Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-60
5-22 Two-Conductor Connection of Loads to a Voltage Output
of an Isolated AO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-60
5-23 Connecting Loads to a Current Output of an Isolated AO . . . . . . . . . . . . . 5-61
5-24 Start Information of OB 40: Which Event Triggered the
Hardware Interrupt at the Limit Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-67
5-25 Block Diagram of the SM 431; AI 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . 5-69
5-26 Terminal Assignment Diagram of the SM 431; AI 8 x 13 Bit . . . . . . . . . . . . 5-70
5-27 Block Diagram of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . 5-75
5-28 Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . 5-76
5-29 Step Response of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . 5-82
5-30 Block Diagram of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . 5-88
5-31 Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . 5-89
5-32 Step Response of the SM 431; AI 8 x 14 Bit (6ES7 431-1KF20-0AB0) . . 5-94
5-33 Block Diagram of the SM 431; AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . 5-98
5-34 Terminal Assignment Diagram of the SM 431; AI 16 x 13 Bit . . . . . . . . . . . 5-99
5-35 Block Diagram of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . 5-106
5-36 Terminal Assignment Diagram of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . 5-107
5-37 Step Response of the SM 431; AI 16 x 16 Bit (6ES7431-7QH00-0AB0) . 5-114
5-38 Block Diagram of the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . . . . . 5-121
5-39 Terminal Assignment Diagram of the SM 431; AI 8 x RTD x 16 Bit . . . . . . 5-122
5-40 Step Response of the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . . . . 5-126
5-41 Block Diagram of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . 5-130
5-42 Terminal Assignment Diagram SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . 5-131
5-43 Step Response at 10 Hz Interference Frequency Suppression
of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-137
5-44 Step Response at 50 Hz Interference Frequency Suppression
of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-137
5-45 Step Response at 60 Hz Interference Frequency Suppression
of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-138
5-46 Step Response at 400 Hz Interference Frequency Suppression of the
SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-138
5-47 Block Diagram of the SM 432; AO 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . 5-141
5-48 Terminal Assignment Diagram of the SM 432; AO 8 x 13 Bit . . . . . . . . . . . 5-142
6-1 Example: Configuration with Send IMs, Receive IMs and Terminators . . 6-5
6-2 Position of the Operator Controls and Indicators of the IM 460-0
and IM 461-0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-3 Position of the Operator Controls and Indicators of the IM 460-1
and IM 461-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-4 Position of the Operator Controls and Indicators of the IM 460-3
and IM 461-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

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6-5 Position of the Operator Controls and Indicators

of the IM 460-4 and IM 461-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
7-1 Layout of the Controls and Indicators of the IM 463-2 . . . . . . . . . . . . . . . . . 7-4
7-2 Settings of the IM 314 with Expansion Units . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
8-1 Configuration of the IM 467/467 FO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8-2 LEDs of the IM 467/467 FO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8-3 Connecting the Bus Connector to the IM 467 . . . . . . . . . . . . . . . . . . . . . . . . 8-7
8-4 Connector Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8-5 Optical Connection to PROFIBUS DP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8-6 Installing the Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
8-7 Inserting the Fiber-Optic Cables into the IM 467 FO . . . . . . . . . . . . . . . . . . 8-10
9-2 Front View of the Cable Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
10-1 RC Network with 10 MW for Configuration with Ungrounded
Reference Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
10-2 Isolation Between the Bus Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
10-3 Block Diagram of the RS 485 Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-7
A-1 Data Record 1 of the Parameters of the Digital Input Modules . . . . . . . . . A-4
A-2 Data Record 1 for Parameters of the Digital Input Modules . . . . . . . . . . . . A-5
A-3 Data Record 1 for Parameters of the Digital Output Modules . . . . . . . . . . A-7
A-4 Data Record 1 for Parameters of the Digital Output Modules . . . . . . . . . . A-8
A-5 Data Record 1 for Parameters of the Analog Input Modules . . . . . . . . . . . A-10
B-1 Bytes 0 and 1 of the Diagnostic Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
B-2 Bytes 2 and 3 of the Diagnostic Data of the SM 421; DI 16 x 24 VDC . . . B-4
B-3 Bytes 4 to 8 of the Diagnostic Data of the SM 421; DI 16 x 24 VDC . . . . . B-5
B-4 Diagnostic Byte for a Channel of the SM 421; DI 16 x 24 VDC . . . . . . . . . B-5
B-5 Bytes 2 and 3 of the Diagnostic Data of the SM 421; DI 16 x 24/60 VUC B-6
B-6 Bytes 4 to 8 of the Diagnostic Data of the SM 421; DI 16 x 24/60 VUC . . B-6
B-7 Diagnostic Byte for a Channel of the SM 421; DI 16 x 24/60 VUC . . . . . . B-7
B-8 Bytes 2 and 3 of the Diagnostic Data of the SM 422;
DO 16 x 20-125 VDC/1.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
B-9 Bytes 4 to 8 of the Diagnostic Data of the SM 422;
DO 16 x 20-125 VDC/1.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
B-10 Diagnostic Byte for a Channel of the SM 422;
DO 16 x 20-125 VDC/1.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
B-11 Bytes 2 and 3 of the Diagnostic Data of the SM 422;
DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10
B-12 Bytes 4 to 10 of the Diagnostic Data of the SM 422;
DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11
B-13 Diagnostic Byte for a Channel of the SM 422;
DO 32 x 24 VDC/0.5 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-12
B-14 Bytes 2 and 3 of the Diagnostic Data of the SM 422;
DO 16 x 20-120 VAC/2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-12
B-15 Bytes 4 to 8 of the Diagnostic Data of the SM 422;
DO 16 x 20-120 VAC/2 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-13
B-16 Diagnostic Byte for a Channel of the SM 422; DO 16 x 20-120 VAC/2 A . B-13
B-17 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 16 x 16 Bit . . . . . B-14
B-18 Bytes 4 to 8 of the Diagnostic Data of the SM 431; AI 16 x 16 Bit . . . . . . . B-15
B-19 Diagnostic Byte for a Channel of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . B-15
B-20 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 8 x RTD x 16 Bit B-16
B-21 Bytes 4 to 7 of the Diagnostic Data of the SM 431; AI 8 x RTD x 16 Bit . . B-16
B-22 Even Diagnostic Byte for a Channel of the SM 431; AI 8 x RTD x 16 Bit . B-17
B-23 Odd Diagnostic Byte for a Channel of the SM 431; AI 8 x RTD x 16 Bit . B-17
B-24 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit . . . . . . B-18
B-25 Bytes 4 to 7 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit . . . . . . . . B-18
B-26 Even Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit . . . . . . . B-19

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B-27 Odd Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit . . . . . . . . B-19
D-1 Electrostatic Voltages which can build up on a person . . . . . . . . . . . . . . . . D-3

Tables
1-1 Use in an Industrial Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-2 Products that Fulfill the Requirements of the Low-Voltage Directive . . . . 1-3
1-3 Pulse-Shaped Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1-4 Sinusoidal Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1-5 Interference emission of electromagnet fields . . . . . . . . . . . . . . . . . . . . . . . 1-10
1-6 Interference emission via the mains AC power supply . . . . . . . . . . . . . . . 1-10
1-7 Shipping and Storage Conditions for Modules . . . . . . . . . . . . . . . . . . . . . . . 1-11
1-8 Mechanical Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
1-9 Ambient Mechanical Conditions Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
1-10 Ambient Climatic Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
1-11 Test Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
3-1 Redundant power supply modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3-2 INTF, DC 5V, DC 24 V LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-3 BAF, BATTF LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-4 BAF, BATT1F, BATT2F LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3-5 Function of the operator controls of the power supply modules . . . . . . . . 3-11
3-6 Error messages of the power supply modules . . . . . . . . . . . . . . . . . . . . . . 3-12
3-7 INTF, DC5V, DC24V LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3-8 BAF, BATTF; BATT INDIC LEDs on BATT . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3-9 BAF, BATT1F, BATT2F; BATT INDIC LEDs on 1BATT . . . . . . . . . . . . . . . . 3-16
3-10 BAF, BATT1F, BATT2F; BATT INDIC LEDs on 2BATT . . . . . . . . . . . . . . . . 3-17
4-1 Digital Input Modules: Characteristics at a Glance . . . . . . . . . . . . . . . . . . . 4-3
4-2 Digital Output Modules: Characteristics at a Glance . . . . . . . . . . . . . . . . . . 4-4
4-3 Relay Output Module: Characteristics at a Glance . . . . . . . . . . . . . . . . . . . 4-4
4-4 Sequence of Steps from Choosing to Commissioning the Digital Module 4-5
4-5 Parameters of the Digital Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-6 Parameters of the Digital Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-7 Diagnostic Messages of the Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4-8 Diagnostic Messages of the Digital Modules, Causes of Errors
and Remedial Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4-9 Parameters of the SM 421; DI 16 x 24 VDC . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
4-10 How the Input Values Depend on the Operating Mode of the CPU and
on the Supply Voltage L+ of the SM 421; DI 16 x 24 VDC . . . . . . . . . . . . . 4-26
4-11 How the Input Values Are Affected by Faults and by
the Parameter Assignment of the SM 421; DI 16 x 24 VDC . . . . . . . . . . . 4-27
4-12 Parameters of the SM 421; DI 16 x 24/60 VUC . . . . . . . . . . . . . . . . . . . . . . 4-34
4-13 Parameters of the SM 422; DO 1 x 20-125 VDC/1.5 A . . . . . . . . . . . . . . . . 4-51
4-14 Parameters of the SM 422; DO 3 x 24 VDC/0.5 A
(6ES7422-7BL00-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59
4-15 Dependence of the Output Values on the Operating Mode of the CPU and on
the Supply Voltage L+ of the SM 422; DO 32 x 24 VDC/0.5 A . . . . . . . . . 4-60
4-16 Parameters of the SM 422; DO 16 x 20-120 VAC/2 A . . . . . . . . . . . . . . . . . 4-71
5-1 Analog Input Modules: Characteristics at a Glance . . . . . . . . . . . . . . . . . . 5-3
5-2 Analog Output Modules: Characteristics at a Glance . . . . . . . . . . . . . . . . . 5-4
5-3 Sequence of Steps from Choosing to Commissioning
the Analog Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5-4 Example: Bit Pattern of a 16-Bit and a 13-Bit Analog Value . . . . . . . . . . . . 5-7
5-5 Possible Resolutions of the Analog Values . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5-6 Bipolar Input Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5-7 Unipolar Input Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

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5-8 Life-Zero Input Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

5-9 Analog Value Representation in Voltage Measuring Ranges
+ 10 V to + 1 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
5-10 Analog Value Representation in the Voltage Measuring Ranges
+ 500 mV to + 25 mV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5-11 Analog Value Representation in the Voltage Measuring Ranges 1 to 5 V
and 0 to 10 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5-12 Analog Value Representation in the Current Measuring Ranges
+ 20 mA to + 3.2 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5-13 Analog Value Representation in Current Measuring Ranges
0 to 20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5-14 Analog Value Representation in Current Measuring Ranges
4 to 20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5-15 Analog Value Representation for Resistance-Type Sensors
from 48 W to 6 kW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5-16 Analog Value Representation for Resistance Thermometers
Pt 100, 200, 500,1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5-17 Analog Value Representation for Resistance Thermometers
Pt 100, 200, 500,1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5-18 Analog Value Representation for Resistance Thermometers
Ni100, 120, 200, 500, 1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5-19 Analog Value Representation for Resistance Thermometers
Ni 100, 120, 200, 500, 1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5-20 Analog Value Representation for Resistance Thermometers Cu 10 . . . . . 5-16
5-21 Analog Value Representation for Resistance Thermometers Cu 10 . . . . . 5-16
5-22 Analog Value Representation for Thermocouple Type B . . . . . . . . . . . . . . 5-17
5-23 Analog Value Representation for Thermocouple Type E . . . . . . . . . . . . . . 5-17
5-24 Analog Value Representation for Thermocouple Type J . . . . . . . . . . . . . . . 5-18
5-25 Analog Value Representation for Thermocouple Type K . . . . . . . . . . . . . . 5-18
5-26 Analog Value Representation for Thermocouple Type L . . . . . . . . . . . . . . . 5-19
5-27 Analog Value Representation for Thermocouple Type N . . . . . . . . . . . . . . 5-19
5-28 Analog Value Representation for Thermocouple Types R, S . . . . . . . . . . . 5-20
5-29 Analog Value Representation for Thermocouple Type T . . . . . . . . . . . . . . 5-20
5-30 Analog Value Representation for Thermocouple Type U . . . . . . . . . . . . . . 5-21
5-31 Bipolar Output Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
5-32 Unipolar Output Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
5-33 Life-Zero Output Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
5-34 Analog Value Representation in Output Range + 10 V . . . . . . . . . . . . . . . . 5-25
5-35 Analog Value Representation in Output Ranges 0 to 10 V and 1 to 5 V . 5-25
5-36 Analog Value Representation in Output Range + 20 mA . . . . . . . . . . . . . . 5-26
5-37 Analog Value Representation in Output Ranges 0 and 20 mA and 4
to 20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5-38 Dependencies of the Analog Input/Output Values on the Operating
Mode of the CPU and the Supply Voltage L+ . . . . . . . . . . . . . . . . . . . . . . . 5-30
5-39 Behavior of the Analog Input Modules as a Function of the Position
of the Analog Value Within the Range of Values . . . . . . . . . . . . . . . . . . . . . 5-31
5-40 Behavior of the Analog Output Modules as a Function of the Position
of the Analog Value Within the Range of Values . . . . . . . . . . . . . . . . . . . . . 5-32
5-41 Parameters of the Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
5-42 Parameters of the Analog Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
5-43 Options for Compensation of the Reference Junction Temperature . . . . . 5-53
5-44 Ordering Data of the Comparison Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-56
5-45 Diagnostic Messages of the Analog Input Modules . . . . . . . . . . . . . . . . . . . 5-63
5-46 Diagnostics Messages of the Analog Input Modules, Causes of Errors
and Remedial Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-64

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5-47 Parameters of the SM 431; AI 8 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-72

5-48 Channels for Resistance Measurement of the SM 431; AI 8 13 Bit . . . . 5-73
5-49 Measuring Ranges of the SM 431; AI 8 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . 5-74
5-50 Parameters of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-81
5-51 Selection of the Measuring Method for Channel n and Channel n+1
of the SM 431;
AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83
5-52 Channels for Resistance and Temperature Measurement
with the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
5-53 Thermocouple with Reference Junction Compensation via RTD
on Channel 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
5-54 Measuring Ranges of the SM 431; AI 8 x 14 Bit . . . . . . . . . . . . . . . . . . . . . 5-85
5-55 Parameters of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0) . . . . . 5-92
5-56 Interference Frequency Suppression and Filter Settling Time with
Smoothing of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0) . . . . . . . 5-93
5-57 Selection of the Measuring Method for Channel n and
Channel n+1 of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0) . . . . . 5-95
5-58 Channels for Resistance Measurement of the SM 431;
AI 8 x 14 Bit (6ES7431-1KF20-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-95
5-59 Measuring Ranges of the SM 431; AI 8 x 14 Bit
(6ES7431-1KF20-0AB0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-96
5-60 Parameters of the SM 431; AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-102
5-61 Selection of the Measuring Method for Channel n and Channel
n+1 of the SM 431; AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-103
5-62 Measuring Ranges of the SM 431; AI 16 x 13 Bit . . . . . . . . . . . . . . . . . . . . 5-104
5-63 Parameters of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-112
5-64 Diagnostic Information of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . 5-114
5-65 Selection of the Measuring Method for Channel n and
Channel n+1 of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . 5-115
5-66 Channels for Resistance and Temperature Measurement
of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-116
5-67 Reference Junction Compensation via RTD on Channel 0 of
the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-116
5-68 Measuring Ranges of the SM 431; AI 16 x 16 Bit . . . . . . . . . . . . . . . . . . . . 5-117
5-69 Points to Note when Checking for “Underflow” . . . . . . . . . . . . . . . . . . . . . . . 5-119
5-70 Parameters of the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . . . . . . . 5-125
5-71 Diagnostic Information of the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . 5-127
5-72 Measuring Ranges of the SM 431; AI 8 x RTD x 16 Bit . . . . . . . . . . . . . . . 5-128
5-73 Parameters of the SM 431; AI 8 x16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-135
5-74 How Response Times Depend on the configured Interference Frequency
Suppression and Smoothing of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . 5-136
5-75 Diagnostic Information of the SM 431; AI 8 16 Bit . . . . . . . . . . . . . . . . . . . 5-139
5-76 Measuring Ranges of the SM 431; AI 8 x 16 Bit . . . . . . . . . . . . . . . . . . . . . . 5-140
5-77 Output Ranges of the Analog Output Module SM 432; AO8 x 13 Bit . . . . 5-145
6-1 Interface Modules of the S7-400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-2 Overview of the connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6-3 Cable for different connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-4 Terminators for the Receive IMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-5 Connecting Cable for Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6-6 Operator controls and Indicators on Send IM . . . . . . . . . . . . . . . . . . . . . . . 6-8
6-7 Operator controls and Indicators on Receive IM . . . . . . . . . . . . . . . . . . . . . 6-9
6-8 Operator controls and indicators on the Send IM . . . . . . . . . . . . . . . . . . . . 6-12
6-9 Operator controls and indicators on the Receive IM . . . . . . . . . . . . . . . . . . 6-12
6-10 Operator controls and indicators on the Send IM . . . . . . . . . . . . . . . . . . . . 6-16
6-11 Operator controls and indicators on the Receive IM . . . . . . . . . . . . . . . . . . 6-16

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6-12 Operator controls and indicators on the Send IM . . . . . . . . . . . . . . . . . . . . 6-20

6-13 Operator controls and indicators on the Receive IM . . . . . . . . . . . . . . . . . . 6-20
7-1 S5 Interface Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7-2 LEDs of the IM 4632 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7-3 Switch Position: Interface Selector of the IM 463-2 . . . . . . . . . . . . . . . . . . . 7-5
7-4 Switch Position: Cable Length Selector of the IM 463-2 . . . . . . . . . . . . . . . 7-5
7-5 Settings Address Areas on the IM 314 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7-6 Assignment of the Connecting Cable 721 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7-7 Assignment of the Terminator 760-1AA11 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
8-1 Operating Modes of the IM 467/467 FO . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
9-1 Function of Fan Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
10-1 Maximum Cable Length of a Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10-2 Maximum Cable Length between Two RS 485 Repeaters . . . . . . . . . . . . . 10-2
10-3 Description and Functions of the RS 485 Repeater . . . . . . . . . . . . . . . . . . . 10-3
A-1 SFCs for assigning Parameters to Signal Modules . . . . . . . . . . . . . . . . . . A-2
A-2 Parameters of the Digital Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
A-3 Parameters of the Digital Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
A-4 Parameters of the Analog Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9
B-1 Codes of the Module Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

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General Technical Specifications 1
What are General Technical Specifications?
General technical specifications include the following:
• The standards and test specifications complied with and met by the modules of
the S7-400 programmable controllers
• The test criteria against which the S7-400 modules were tested

Chapter Overview

Section Description Page

1.1 Standards and Approvals 1-2
1.2 Electromagnetic Compatibility 1-8
1.3 Shipping and Storage Conditions for Modules and Backup Batteries 1-11
1.4 Mechanical and Ambient Climatic Conditions for Operating the 1-13
S7-400
1.5 Information on Insulation Tests, Protection Class and Degree of 1-16
Protection

Automation System S7-400 Module Specifications

A5E00267842-02 1-1
General Technical Specifications

1.1 Standards and Approvals

Note
You will find the current approvals on the identification label of the respective
products.

Warning
! Open equipment
Risk of death, serious injury or substantial material damage.
S7--400 modules are open equipment. The S7 400 must be installed in a cabinet
or cubicle.
Access to these cabinets or cubicles may only be possible using a key or tool, and
is only permitted for instructed or authorized personnel.

IEC 61131-2
The S7-400 programmable controller satisfies the requirements and criteria of the
IEC 61131-2 standard (programmable controllers, part 2 on equipment
requirements and tests).

CE Mark
Our products satisfy the requirements and protection objectives of the
EC Directives listed below and comply with the harmonized European
standards (EN) promulgated in the Official Journals of the European Community for
programmable controllers:
• 73/23/EEC “Electrical Equipment Designed for Use between Certain Voltage
Limits” (Low-Voltage Directive)
• 89/336/EEC “Electromagnetic Compatibility” (EMC Directive)
• 94/9/EG “Devices and protection systems to be used as prescribed in potentially
explosive areas (Guidelines for Explosion Protection)”
The declarations of conformity are held at the disposal of the competent authorities
at the address below:
Siemens Aktiengesellschaft
Bereich Automation and Drives
A&D AS RD ST
Postfach 1963
D-92209 Amberg
These files are also available for download on the Customer Support Internet
pages, under “Declaration of Conformity”.

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1-2 A5E00267842-02
 General Technical Specifications

EMC Directive
SIMATIC products are designed for use in industrial environments.

Table 1-1 Use in an Industrial Environment

EMC Directive Requirements in respect of:

Emitted interference Immunity
Industry EN 61000-6-4 : 001 EN 61000-6-2 : 001

Low Voltage Directive

The products listed in the table below fulfill the requirements of EU low-voltage
directive (73/23/EEC). Adherence to this EU directive was tested in accordance
with IEC 61131-2.

Table 1-2 Products that Fulfill the Requirements of the Low-Voltage Directive

Name Order number

Digital Input Module SM 421; DI 32 x 120 VUC 6ES7421-1EL00-0AA0
Digital Input Module SM 421; DI 16 x 120/230 VUC 6ES7421-1FH00-0AA0
Digital Output Module SM 422; DO 8 x 120/230 VAC/5 A 6ES7422-1FF00-0AA0
Digital Output Module SM 422; DO 16 x 120/230 VAC/2 A 6ES7422-1FH00-0AB0
Relay Output Module SM 422; DO 16 x 30/230 VUC/Rel5A 6ES7422-1HH00-0AA0
Digital input module SM 421; DI 16 x UC 120/230 V 6ES7421-1FH20-0AA0
The 120/230 VAC Fan Subassembly 6ES7408-1TB00-0XA0
PS 407 4A 6ES7407-0DA01-0AA0
PS 407 10A 6ES7407-0KA01-0AA0
PS 407 20A 6ES7 407-0RA01-0AA0
PS 407 10A R 6ES7407-0KR00-0AA0

Note
In the new releases, some of the devices listed above fulfil the requirements of the
explosion protection guidelines instead of that of the low-voltage directive. Please
note the information on the identification label.

Explosion Protection Guidelines

According to EN 50021 (Electrical apparatus for potentially explosive

atmospheres; Type of protection “n”)

II 3 G EEx nA II T3..T6

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A5E00267842-02 1-3
General Technical Specifications

Mark for Australia and New Zealand

Our products satisfy the requirements of Standard AS/NZS CISPR 11 (Class A).

Note
You will recognize the approval assigned to your product from the mark on the
identification label. The opprovals are listed below UL/CSA or cULus.

UL Approval
UL recognition mark
Underwriters Laboratories (UL) to the UL 508 Standard:
• Report E 85972

CSA Approval
CSA certification mark
Canadian Standard Association (CSA) to Standard C 22.2 No. 142:
• Certification Record 212191-0-000

or

cULus Approval
Underwriters Laboratories Inc. nach
S UL 508 (Industrial Control Equipment)
S CSA C22.2 No. 142 (Pocess Control Equipment)

or
cULus Certification, Hazardous Location

CULUS Listed 7RA9 INT. CONT. EQ. FOR HAZ. LOC.

Underwriters Laboratories Inc. nach
S UL 508 (Industrial Control Equipment)
HAZ. LOC.
S CSA C22.2 No. 142 (Pocess Control Equipment)
S UL 1604 (Hazardous Location)
S CSA-213 (Hazardous Location)
APPROVED for Use in
S Cl. 1, Div. 2, GP. A, B, C, D T4A
S Cl. 1, Zone 2, GP. IIC T4
Please read the notes below.

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 General Technical Specifications

or
cULus Certification, Hazardous Location for relay modules

CULUS Listed 7RA9 INT. CONT. EQ. FOR HAZ. LOC.

Underwriters Laboratories Inc. nach

HAZ. LOC. S UL 508 (Industrial Control Equipment)

S CSA C22.2 No. 142 (Pocess Control Equipment)
S UL 1604 (Hazardous Location)
S CSA-213 (Hazardous Location)
APPROVED for Use in
S Cl. 1, Div. 2, GP. A, B, C, D T4A
S Cl. 1, Zone 2, AEx nC IIC T4
S Cl. 1, Zone 2, Ex nC IIC T4
Please read the notes below.

Note
This plant has to be mounted according to the NEC (National Electric Code)
stipulations.
When used in environments according to class I, division 2 (see above), S7-400
must be mounted in a housing that corresponds to at least IP54 according to
EN 60529.
For information on the operation of an S7-400 in potentially explosive areas of
Zone 2, refer to the separate document included in this documentation package.

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General Technical Specifications

cuULu requirements on hazardous location on the battery power supply for

CPUs
The power supply to the backup battery of a CPU must be via a non-incendive
plug. The figure below portrays the concept of such connection.

Battery or CPU with connector

Power supply unit “ext. batt.”

Cc = Cable capacity
Lc = Cable inductance

Figure 1-1 Power supply to the backup battery

The following conditions apply to the performance characteristics of this

connection:
Voc (no load voltage) = 15V Vmax = 15V
Isc (short--circuit current )= 50 mA Imax = 50 mA
Ca = Battery capacity/ Ci = 25 nF maximum
power supply
La= Battery inductance/ Li = 2 mH maximum
power supply
The battery/power supply which supplies the non--ingnitable connection must have
the following values:

Battery/Power supply CPU iput “Ext. Batt.” incl. cabel

Voc ≤ Vmax (15V)
Isc ≤ Imax (50 mA)

Battery/Power supply CPU iput “Ext. Batt.” incl. cable

Ca ≥ Ci + Cc (25nF + Cc)
La ≥ Li + Lc (2mH + Lc)

The batteries used must have the following properties:

• Battery technology: Li/SOCL2
• Model: AA
• Voltage: 3.6 V

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The batteries stipulated by Siemens fulfil requirements that go beyond the ones
mentioned above.
You may only use batteries approved by Siemens !

Note
If you do not know the capacity and inductance of the cable, you can use the
following values:

Cc = 197 pF/m (60 pF/ft.), Lc = 0.66 pF/m (0.2 mH/ft)

Example
The battery of type 4022 from Varta together with a 1.5 m long cable and a plug
connection of type 02--02.1500 from Leonhardy meet these conditions.

FM Approval
Factory Mutual Approval Standard Class Number 3611, Class I, Division 2, Group
A, B, C, D.
Temperature class: T4 at 60 °C ambient temperature

Warning
! Personal injury or property damage can result.
In hazardous areas, personal injury or property damage can result if you create or
break an electrical circuit during operation of an S7-400 (for example, by means of
plug-in connections, fuses, switches).
Do not create or break live electric circuits unless you are certain there is no
danger of explosion.
If you use S7-400 under FM conditions, it has to be mounted in a housing, which
at least corresponds to IP54 in accordance with EN 60529.

Marine approvals
Classification organizations:
• ABS (American Bureau of Shipping)
• BV (Bureau Veritas)
• DNV (Det Norske Veritas)
• GL (Germanischer Lloyd)
• LRS (Lloyds Register of Shipping)
• Class NK (Nippon Kaiji Kyokai)

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General Technical Specifications

Safety Requirements for Installation

The S7-400 programmable controllers are “open type” equipment to the
IEC 61131-2 standard and therefore adhere to the EU directive 73/23/EEC
“Low-Voltage Directive” and are UL/CSA certified as such.
To fulfill requirements for safe operation with regard to mechanical stability, flame
retardance, stability, and shock-hazard protection, the following alternative types of
installation are specified:
• Installation in a suitable cabinet
• Installation in a suitable housing
• Installation in a suitably equipped, enclosed operating area.

1.2 Electromagnetic Compatibility

Introduction
In this section you will find information on the noise immunity of S7-400 modules
and on radio interference suppression.
All the components of S7-400 automation systems meet the requirements of the
standards that apply in Europe provided they are installed in accordance with all
the appropriate regulations (see Installation Manual, Chapters 2 and 4).

Definition of “EMC”
Electromagnetic compatibility (EMC) is the ability of an electrical installation to
function satisfactorily in its electromagnetic environment without interfering with
that environment.

Warning
! Personal injury or property damage can result.
Installation of expansions that have not been approved for the S7-400 can result in
violations of the requirements and regulations for safety and electromagnetic
compatibility.
Use only expansions that have been approved for the system.

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 General Technical Specifications

Pulse-Shaped Interference
The following table shows the electromagnetic compatibility of modules when there
are pulse-shaped disturbance variables. A requirement for this is that the S7-400
system complies with the relevant requirements and guidelines on electric design.

Table 1-3 Pulse-Shaped Interference

Pulse-Shaped Interference Test Voltage Degree of
Severity
Electrostatic discharge Discharge to air: ±8 kV
3
To IEC 61000-4-2 Contact discharge: ±6 kV
Bursts (fast transient interference in accor- 2 kV (power supply line)
dance with IEC 61000-4-4) 2 kV (signal line > 30 m) 3
1 kV (signal line < 30 m)
Energy-rich single impulse (surge)
3
to IEC 61000-4-5
• Asymmetrical coupling 2 kV (supply line) DC voltage with
protective elements
2 kV (signal line/data line > 30 m only),
possibly with protective elements
• Symmetrical coupling 1 kV (supply line) DC voltage with
protective elements
1 kV (signal line > 30 m only), possibly
with protective elements

Sinusoidal Interference
The following table shows you the EMC behavior of the S7-400 modules when
there is sinusoidal interference.

Table 1-4 Sinusoidal Interference

Sinusoidal Interference Test Values Degree of

Severity
RF irradiation (electromagnetic fields) 10 V/m with 80% amplitude modulation of
To IEC 61000-4-3 1 kHz over the range from 80 MHz to
1000 MHz 3

To IEC 61000-4-3 10 V/m with 50% pulse modulation at 900 MHz

RF conductance on cables and cable Test voltage 10 V with 80% amplitude
shields to IEC 61000-4-6 modulation of 1 kHz over the range from 9 MHz 3
to 80 MHz

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General Technical Specifications

Emission of Radio Interference

Interference emission of electromagnetic fields in accordance with EN 55011: Limit
value class A, Group 1.

Table 1-5 Interference emission of electromagnet fields

Frequency Range Limit Value

From 20 to 230 MHz 30 dB (mV/m)Q
From 230 to 1000 MHz 37 dB (mV/m)Q
Measured at a distance of 30 m (98.4 ft.)

Emitted interference via the mains AC power supply in accordance with EN 55011:
Limit value class A, group 1.

Table 1-6 Interference emission via the mains AC power supply

Frequency Range Limit Value

From 0.15 to 0.5 MHz 79 dB (mV)Q
66 dB (mV)M
From 0.5 to 5 MHz 73 dB (mV)Q
60 dB (mV)M
From 5 to 30 MHz 73 dB (mV)Q
60 dB (mV)M

System Perturbation
The S7-400 AC Power Supply Modules fulfill the requirements of the following
standards for system perturbation:
Harmonic currents: EN 61000-3-2
Voltage fluctuations and flicker EN 61000-3-3

Additional Measures
If you want to connect an S7-400 system to the public power system, you must
ensure compliance with limit value class B in accordance with EN 55022.
Suitable additional measures must be taken, if you need to enhance the noise
immunity of the system as a result of high external noise levels.

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 General Technical Specifications

1.3 Shipping and Storage Conditions for Modules and

Backup Batteries

Shipping and Storage of Modules

S7-400 modules surpass the requirements of IEC 61131-2 in respect of shipping
and storage requirements. The following details apply to modules shipped and/or
stored in their original packing.
The climatic conditions conform to IEC 60721, Part 3-3, Class 3K7 for storage and
IEC 60721, Part 3-2, Class 2K4 for transport.
The mechanical conditions conform to IEC 60721, Part 3-2, Class 2M2.

Table 1-7 Shipping and Storage Conditions for Modules

Permitted Range
Free fall ≤ 1 m (up to 10 kg)
Temperature --40 °C to +70 ° C
Atmospheric pressure 1080 to 660 hPa (corresponds to a height of -1000 to
3500 m)
Relative humidity 5 to 95 %, without condensation
(at +25 °C)
Sinusoidal oscillations 5 to 9 Hz: 3.5 mm
to IEC 60068-2-6 9 to 500 Hz: 9.8 m/s2
Shock to IEC 60068-2-29 250 m/s2, 6 ms, 1000 shocks

Shipping of Backup Batteries

Wherever possible, transport backup batteries in their original packing. No special
measures are required for the transport of the backup batteries used in the S7-400
system. The lithium component of the backup battery is less than 0.5 g.

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General Technical Specifications

Storing Backup Batteries

Backup batteries must be stored in a cool, dry place. The maximum storage time is
10 years.

Warning
! Risk of injury, material damage, release of hazardous substances.
Lithium batteries can explode if handled improperly. Their improper disposal may
result in the release of hazardous substances. Strictly adhere to the following in-
structions:
• Do not throw a new or low battery into an open fire and do not perform any sol-
dering work on the cell casing (max. temperature 100 °C). Do not recharge the
battery -- risk of explosion! Do not open a battery. Replace a faulty battery onoly
with the same type. Replacement batteries can be ordered from SIEMENS (for
order numbers, refer to the “Module data” reference manual, in appendix C).
This will insure that your are installing a short circuit-proof type.
• Always try to return low batteries to the manufacturer or deliver these to a regi-
stered recycling company.

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 General Technical Specifications

1.4 Mechanical and Ambient Climatic Conditions for

Operating the S7-400

Operating Conditions
The S7-400 is designed for weather-protected use as a permanent installation. The
S7-400 fulfills the requirements for use in accordance with IEC 60721-3-3:
• Class 3M3 (mechanical requirements)
• Class 3K3 (ambient climatic conditions)

Use with Additional Measures

The S7-400, for example, must not be used without taking additional measures:
• In locations exposed to a high degree of ionizing radiation
• In hostile environments caused, for instance, by
-- Dust accumulation
-- Corrosive vapors or gases
-- Strong electric or magnetic fields
• In installations requiring special monitoring, for example
-- Elevators
-- Electrical installations in particularly hazardous areas
An additional measure might be, for instance, installation of the S7-400 in a cabinet
or in a housing.

Ambient Mechanical Conditions

The ambient mechanical conditions for S7-400 modules are listed in the following
table in the form of sinusoidal oscillations.

Table 1-8 Mechanical Conditions

Frequency Range in Hz Test Values

10 ≤ f < 58 0.075 mm amplitude
58 ≤ f < 500 1 g constant acceleration

Reducing Vibrations
If the S7-400 is subject to high levels of shock or vibration, you must take suitable
measures to reduce the acceleration or amplitude.
We recommend that you install the S7-400 on vibration-damping materials
(for example, rubber-metal antivibration mountings).

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General Technical Specifications

Tests for Ambient Mechanical Conditions

The following table contains important information on the type and scope of tests
for ambient mechanical conditions.

Table 1-9 Ambient Mechanical Conditions Test

Test ... Test Standard Remarks

Vibrations Vibration test in Type of oscillation: frequency sweeps with a
accordance with rate of change of 1 octave/minute.
IEC 60068-2-6 10 Hz ≤ f < 58 Hz, constant amplitude
(sinusoidal) 0.075 mm
58 Hz ≤ f < 500 Hz, constant acceleration
1g
Duration of oscillation: 10 frequency sweeps
per axis in each of three axes perpendicular
to each other
Shock Shock test in Type of shock: half-sine
accordance with Severity of shock: 10 g peak value, 6 ms
IEC 60068-2-29 duration
Direction of shock: 100 shocks in each of the
3 axes arranged vertically to each other

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 General Technical Specifications

Ambient Climatic Conditions

You can use the S7-400 under the following ambient climatic conditions:

Table 1-10 Ambient Climatic Conditions

Climatic Conditions Permitted Range Remark

Temperature 0 to +60 °C
Temperature change Max. 10 °C/h
Relative humidity Max. 95 % at +25 °C No condensation,
corresponds to RH
stressing level 2 in
accordance with
IEC 61131-2
Atmospheric pressure 1080 to 795 hPa (corresponds to
a height of -1000 to 2000 m)
Concentration of SO2: < 0.5 ppm; Test: 10 ppm; 4 days
contaminants RH < 60 %, no condensation

H2S: < 0.1 ppm; Test: 1 ppm; 4 days

RH < 60 %, no condensation

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General Technical Specifications

1.5 Information on Insulation Tests, Protection Class and

Degree of Protection

Test Voltages
Insulation resistance was demonstrated in routine testing with the following test
voltages in accordance with IEC 61131-2:

Table 1-11 Test Voltages

Circuits with Rated Voltage Ue to Other Circuits or

Test Voltage
Ground
0 V < Ue ≤ 50 V 350 V
50 V < Ue ≤ 100 V 700 V
100 V < Ue ≤ 150 V 1300 V
150 V < Ue ≤ 300 V 2200 V

Protection Class
Safety class I to IEC 60536 (VDE 0106, Part 1). In other words, a connection is
required from the protective conductor to the power supply module.

Protection Against Ingress of Foreign Bodies and Water

Degree of protection IP 20 to IEC 60529. In other words, there is protection against
contact with standard probes.
There is no special protection against the ingress of water.

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Racks 2
Chapter Overview

Section Description Page

2.1 Function and Structure of the Racks 2-2
2.2 The Racks UR1; (6ES7400-1TA01-0AA0) and 2-3
UR2; (6ES7400-1JA01-0AA0)
2.3 The Rack UR2-H; (6ES7400-2JA00-0AA0) 2-4
2.4 The Rack CR2; (6ES7401-2TA01-0AA0) 2-6
2.5 The Rack CR3; (6ES7401-1DA01-0AA0) 2-7
2.6 The Racks ER1; (6ES7403-1TA01-0AA0) and 2-8
ER2; (6ES7403-1JA01-0AA0)

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Racks

2.1 Function and Structure of the Racks

Introduction
The racks in the S7-400 have the following tasks:
• They hold the modules
• They supply the modules with operating voltage
• They connect the individual modules to each other via the signal buses

Structure of the Racks

A rack consists of the following elements:
• Mounting rail with threaded bolts for fixing the modules and lateral cutouts for
mounting the rack
• Plastic parts that function, among other things, as guides when swinging the
modules into place.
• A backplane bus, an I/O bus and, if necessary, a communication bus with bus
connector
• Connection for local ground
Figure 2-1 shows the mechanical configuration of a rack (UR1).

Aluminum carrier Plastic parts

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Connection for local ground Bus connector (covered when shipped)

Figure 2-1 Structure of a Rack with 18 Slots

UL/CSA Note
Special requirements should be taken into consideration in the area of influence of
the UL/CSA; these may be fulfilled by installing the system in a cabinet.

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 Racks

2.2 The Racks UR1; (6ES7400-1TA01-0AA0) and

UR2; (6ES7400-1JA01-0AA0)

Introduction
The UR1 and UR2 racks are used for assembling central racks and expansion
racks. The UR1 and UR2 racks have both an I/O bus and a communication bus.

Suitable Modules for UR1 and UR2

You can use the following modules in the UR1 and UR2 racks:
• When the UR1 or UR2 is used as a central rack:
All S7-400 modules with the exception of receive IMs
• When the UR1 or UR2 is used as an expansion rack:
All S7-400 modules with the exception of CPUs and send IMs
Special case: Power supply modules cannot be used in conjunction with the
IM 461-1 receive IM.

Structure of the UR1 and UR2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9

I/O bus I/O bus

290 mm 190 mm

Communication bus Communication bus

40 mm

465 mm 240 mm

482.5 mm 257.5 mm

Figure 2-2 Dimensions of the UR1 18-Slot or UR2 9-Slot Rack

Technical Specifications of the UR1 and UR2 Racks

Rack UR1 UR2

Number of single-width slots 18 9
Dimensions W x H x D (in mm) 482.5 x 290 x 27.5 257.5 x 290 x 27.5
Weight (in kg) 4.1 2.15
Buses I/O bus and communication bus

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A5E00267842-02 2-3
Racks

2.3 The Rack UR2-H; (6ES7400-2JA00-0AA0)

Introduction
The UR2-H rack is used for assembling two central racks or expansion racks in
one rack. The UR2-H rack essentially represents two electrically isolated UR2
racks on the same rack profile. The main area of application of the UR2-H is in the
compact structure of redundant S7-400H systems (two devices or systems in one
rack).

Suitable Modules for the UR2-H

You can use the following modules in the UR2-H rack:
When the UR2-H is used as a central rack:
• All S7-400 modules with the exception of receive IMs
When the UR2-H is used as an expansion rack:
• All S7-400 modules apart from CPUs, send IMs, the IM 463-2, and the adapter
module
Special case: Power supply modules cannot be used in conjunction with the
IM 461-1 receive IM.

Structure of the UR2-H

Figure 2-3 shows the structure of the UR2-H rack with 2 x 9 slots.

System I System II

1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9

290 mm 190 mm

40 mm

465 mm

482.5 mm

Figure 2-3 Rack Dimensions

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 Racks

Caution
! Danger of damage to equipment.
If you insert a power supply module in a slot that is not permitted for power supply
modules, the module may be damaged. Slots 1 to 4 are permitted, whereby power
supply modules starting from slot 1 must be inserted without leaving gaps.
Make sure that power supply modules are only inserted in permitted slots. Take
particular notice of the option of swapping modules in slot 1 on rack II and slot 9
on rack I.

Technical Specifications of the UR2-H Rack

Rack UR2-H
Number of single-width slots 2x9
Dimensions W x H x D (in mm) 482.5 x 290 x 27.5
Weight (in kg) 4.1
Buses Segmented I/O bus,
segmented communication bus

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Racks

2.4 The Rack CR2; (6ES7401-2TA01-0AA0)

Introduction
The CR2 rack is used for assembling segmented central racks. The CR2 has both
an I/O bus and a communication bus. The I/O bus is split into two local bus
segments with 10 or 8 slots.

Suitable Modules for the CR2

You can use the following modules in the CR2 rack:
• All S7-400 modules with the exception of receive IMs

Structure of the CR2

Segment 1 Segment 2

1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

I/O bus I/O bus

290 mm 190 mm Segment 1 Segment 2

Communication bus

40 mm

465 mm
482.5 mm

Figure 2-4 CR2 Rack

Technical Specifications of the CR2 Rack

Rack CR2
Number of single-width slots 18
Dimensions W x H x D (in mm) 482.5 x 290 x 27.5
Weight (in kg) 4.1
Busses Segmented I/O bus,
continuous communication bus
Only one power supply module required

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 Racks

2.5 The Rack CR3; (6ES7401-1DA01-0AA0)

Introduction
The CR3 rack is used for the assembly of CRs in standard systems (not in
fault-tolerant systems). The CR3 has an I/O bus and a communication bus.

Suitable Modules for CR 3

You can use the following modules in CR3:
• All S7-400 modules with the exception of receive IMs
• You can only use the CPU 414-4H and CPU 417-4H in stand-alone operation.

Structure of the CR3

1 2 3 4

1 2 3 4

190 mm

40 mm

115 mm

132 mm

Figure 2-5 CR3 Rack

Technical Specifications of the CR3 Rack

Rack CR3
Associated programming package As of STEP 7 V 5.1; ServicePack 3
Number of single-width slots 4
Dimensions W x H x D (in mm) 122.5 x 290 x 27.5
Weight (in kg) 0.75
Buses I/O bus and communication bus

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A5E00267842-02 2-7
Racks

2.6 The Racks ER1; (6ES7403-1TA01-0AA0)

and ER2; (6ES7403-1JA01-0AA0)

Introduction
The ER1 and ER2 racks are used for assembling expansion racks.
The ER1 and ER2 racks have only one I/O bus with the following restrictions:
• Interrupts from modules in the ER1 or ER2 have no effect since there are no
interrupt lines provided.
• Modules in the ER1 or ER2 are not supplied with 24 V. Modules requiring a
24 V supply are not provided for use in the ER1 or ER2.
• Modules in the ER1 or ER2 are not backed up either by the battery in the power
supply module or by the voltage supplied externally to the CPU or the receive
IM (EXT.-BATT. socket).
There is therefore no advantage in using backup batteries in the power supply
modules in ER1 and ER2.
Battery faults and backup voltage faults are not reported to the CPU.
The battery monitoring function of a power supply module installed in the ER1
or ER2 should therefore always be switched off.

Suitable Modules for ER1 and ER2

You can use the following modules in the ER1 and ER2 racks:
• All power supply modules
• Receive IMs
• All signal modules provided the above-mentioned restrictions are observed.
However: Power supply modules cannot be used in conjunction with the IM 461-1
receive IM.

Structure of ER1 and ER2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9

I/O bus I/O bus

290 mm 190 mm

40 mm

465 mm 240 mm
482.5 mm 257.5 mm

Figure 2-6 ER1 Rack with 18 Slots and ER2 Rack with 9 Slots

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 Racks

Technical Specifications of the ER1 and ER2 Racks

Rack ER1 ER2

Number of single-width slots 18 9
Dimensions W x H x D (in mm) 482.5 x 290 x 27.5 257.5 x 290 x 27.5
Weight (in kg) 2.5 1.25
3.8 as of version 03 2.0 as of version 03
Busses Restricted Restricted
I/O bus I/O bus

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Racks

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Power Supply Modules 3
Chapter Overview

Section Description Page

3.1 Common Characteristics of the Power Supply Modules 3-2
3.2 Redundant Power Supply Modules 3-4
3.3 Backup Battery (Option) 3-6
3.4 Controls and Indicators 3-8
3.5 Fault/Error Messages via LEDs 3-12
3.6 Power Supply Module 3-18
PS 407 4A; (6ES7407-0DA01-0AA0)
3.7 Power Supply Modules 3-20
PS 407 10A; (6ES7407-0KA01-0AA0) and
PS 407 10A R; (6ES7407-0KR00-0AA0)
3.8 Power Supply Module 3-22
PS 407 20A; (6ES7407-0RA01-0AA0)
3.9 Power Supply Module 3-24
PS 405 4A; (6ES7405-0DA01-0AA0)
3.10 Power Supply Modules 3-26
PS 405 10A; (6ES7405-0KA01-0AA0) and
PS 405 10A R; (6ES7405-0KR00-0AA0)
3.11 Power Supply Module 3-28
PS 405 10A; (6ES7405-0KA02-0AA0)
3.12 Power Supply Module 3-30
PS 405 20A; (6ES7405-0RA01-0AA0)

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Power Supply Modules

3.1 Common Characteristics of the Power Supply Modules

Tasks of the Power Supply Modules

The power supply modules of the S7-400 supply the other modules in the rack with
their operating voltages via the backplane bus. They do not provide load voltages
for the signal modules.

Common Characteristics of the Power Supply Modules

The power supply modules share certain common characteristics in addition to
their special technical specifications. The most important common characteristics
are:
• Encapsulated design for use in mounting racks of the S7-400 system
• Cooling via natural convection
• Plug-in connection of the supply voltage with AC - DC coding
• Protection class I (with grounding conductor) to IEC 61140; VDE 0140, Part 1
• Limiting of the inrush current according to NAMUR recommendation NE 21
• Short circuit-proof outputs
• Monitoring of both output voltages. If one of these voltages fails, the power
supply module signals a fault to the CPU.
• Both output voltages (5 VDC and 24 VDC) share a common ground.
• Primary clocked
• Battery backup as option. The parameters set and the memory contents (RAM)
are backed up via the backplane bus in the CPUs and programmable modules.
In addition, the backup battery enables you to carry out a restart of the CPU.
Both the power supply module and the backed up modules monitor the battery
voltage.
• Operating and fault/error LEDs on the front plate.

Warning
A mains disconnecting device must be provided when installing AC power supply
modules.

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Switching the Line Voltage Off/On

The power supply modules have a making-current limiter in accordance with
NAMUR.

Power Supply Module in Invalid Slot

If you insert the power supply module of a rack in an invalid slot, it will not power
up. In this case, proceed as follows to start up the power supply module correctly:
1. Disconnect the power supply module from the mains (not just the standby
switch).
2. Remove the power supply module.
3. Install the power supply module in slot 1.
4. Wait at least 1 minute and then switch the line voltage on again.

Caution
! Damage can result.
If you insert the power supply module in a slot that is not intended for power
supply modules, the module may be damaged. Slots 1 to 4 are permissible as long
as you start at slot 1 and leave no gaps.
Make sure that power supply modules are only inserted in permissible slots.

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Power Supply Modules

3.2 Redundant Power Supply Modules

Order Numbers and Function

Table 3-1 Redundant power supply modules

Type Order Number Input Voltage Output Voltage See

Section
PS 407 10A R 6ES7407-0KR00-0AA0 85 VAC to 264 VAC or 5 VDC/10 A and 3.7
88 VDC to 300 VDC 24 VDC/1 A
PS 405 10A R 6ES7405-0KR00-0AA0 19.2 VDC to 72 VDC 5 VDC/10 A and 3.10
24 VDC/1 A

Redundant Operation
If you use two power supply modules of type PS 407 10A R or PS 405 10A R, you
can install a redundant power supply on a mounting rack. We recommend this if
you want to increase the availability of your programmable controller, particularly if
you are operating it on an unreliable power system.

Configuring a Redundant Power Supply

Redundant operation is possible with any of the S7 CPUs and racks described in
this manual. STEP 7 as of V4.02 is also required.
To set up a redundant power supply, insert a power supply module in slots 1 and 3
of the rack. You can then insert as many modules as can be supplied by a single
power supply module. In other words, in redundant operation all the modules can
only draw a total of 10 A.

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 Power Supply Modules

Characteristics
The redundant power supply of an S7-400 has the following characteristics:
• The power supply module delivers a making current in accordance with
NAMUR.
• Each of the power supply modules can take over the supply of power to the
whole rack if the other one fails. There is no loss of operation.
• Each of the power supply modules can be exchanged while the system is in
operation. No loss of power and no peak stress occurs with the effective
voltages when the modules are removed or inserted.
• Each of the power supply modules monitors its function and sends a message if
it fails.
• Neither of the power supply modules can generate an error which affects the
output voltage of the other power supply module.
• A redundant battery concept (backup concept) is only provided when two
backup batteries are used in each of the power supply modules. If only one
battery is used in each module, only non-redundant backup is possible, since
both batteries are being used at the same time.
• The failure of a power supply module is registered via a plug and remove
interrupt (default STOP). If used in the second segment of the CR 2 is no
message sent if the power supply module fails.
• If two power supply modules are inserted but only one is switched on, there is a
power-up delay of up to one minute when the line voltage is switched on.

Note
The check box “Startup if preset configuration not equal to actual configuration”
should be activated in the “Properties” dialog box of the CPU.

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Power Supply Modules

3.3 Backup Battery (Option)

Introduction
The power supply modules of the S7-400 have a battery compartment for one or
two backup batteries. Use of these batteries is optional.

Function of the Backup Batteries

If backup batteries have been installed, the parameters set and the memory
contents (RAM) will be backed up via the backplane bus in CPUs and
programmable modules if the supply voltage fails. The battery voltage must be
within the tolerance range.
In addition, the backup battery enables you to carry out a restart of the CPU after
power-on.
Both the power supply module and the backed up modules monitor the battery
voltage.

Power Supply Modules With Two Backup Batteries:

Some power supply modules contain a battery compartment for two batteries. If
you use two batteries and set the switch to 2BATT, the power supply module
defines one of the two batteries as the backup battery. This assignment remains in
force until the battery is empty. When the backup battery is completely discharged,
the system switches to the reserve battery which is then in turn used as the backup
battery for the duration of its life. The status “backup battery” is also stored in the
event of a power failure.

Battery Type
Only batteries approved by Siemens must be used (see Appendix C: Spare Parts)
The batteries can form a passivation layer. Depassivation takes place when the
batteries are inserted in the power supply module.

Technical Specifications of the Backup Battery

Backup Battery
Order number 6ES7971-0BA00
Type 1 x lithium AA
Rated voltage 3.6 V
Rated capacity 1.9 Ah

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Backup Times
The maximum backup time is based on the capacity of the backup batteries used
and the backup current in the rack. The backup current is the sum of all individual
currents of the inserted backed-up modules as well as the requirements of the
power supply module when the power is switched off.

Example for the Calculation of Backup Times

The capacity of the batteries is listed in the technical specifications of the power
supply. The typical and maximum backup current of the backed-up module is listed
in the technical specifications of the module.
The typical backup current of a CPU is an empirically determined value. The
maximum backup current is a worst-case value that is calculated based on the
corresponding manufacturer specifications for the memory blocks.
The following technical specifications produce backup times for a CR with a
PS 407 4A and a CPU 417-4 as the only backed-up module:
Capacity of the backup battery: 1.9 Ah
Maximum backup current (including own requirement at power off) of the power
supply:100 µA
Typical backup current of the CPU 417-4: 600 µA
A rated capacity of less than 100% is to be assumed when calculating the backup
time because the backup battery is also affected at power on by the regular
depassivation.
A battery capacity of 63% of the rated capacity produces the following values:
Backup time = 1.9 Ah * 0.63 / (100 + 600) µA = (1.197 / 700) * 1 000 000 = 1710 h
This produces a maximum backup time of 71 days.

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Power Supply Modules

3.4 Controls and Indicators

Introduction
The power supply modules of the S7-400 have essentially the same controls and
indicators.The main differences are:
• Power supply modules with a backup battery have an LED (BATTF) that
indicates an empty, defective, or missing backup battery.
• Power supply modules with two redundant backup batteries have two LEDs
(BATT1F and BATT2F) to indicate empty, defective or missing backup batterie

Operator Controls and Indicators

Figure 3-1 shows you an example of a power supply module (PS 407 20A) with two
(redundant) backup batteries. The LEDs are at the top left of the module front
plate.

• Fixing screws
PS 407 20A

1 X 2 2 3
3 4
407-0RA00-0AA0

INTF

BAF
BATTF
BATTF • LEDs INTF,
5 VDC
BAF, BATT1F, BATT2F,
24 VDC
5 VDC, 24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch (does not cut off mains)

BATT.1 BATT.2
Under cover
+ +

• Battery compartment
-- --

BATT. INDIC.
2 BATT
• Switches BATT. INDIC.
2 BATT, OFF, 1 BATT
OFF
1 BATT

• 3-pin plug-in power connector

• Fixing screw

Figure 3-1 Controls and Indicators on the PS 407 20A

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 Power Supply Modules

Meaning of the LEDs

The meaning of the LEDs on the power supply modules is described in the tables
below. Section 3.5 contains a list of the faults indicated by these LEDs and notes
on how to acknowledge the faults.

INTF, 5 VDC, 24 VDC

Table 3-2 INTF, DC 5V, DC 24 V LEDs

LED Color Meaning

INTF red Lights up in the event of an internal fault
5 VDC green Lights up as long as the 5 V voltage is within the tolerance limits
24 VDC green Lights up as long as the 24 V voltage is within the tolerance
limits

BAF, BATTF
Power supply modules with a backup battery have the following indicators:

Table 3-3 BAF, BATTF LEDs

LED Color Meaning

BAF Red Lights up if the battery voltage on the backplane bus is too low
and the BATT INDIC switch is at the BATT position
BATTF Yellow Lights up if the battery is empty, if the polarity is reversed, or if
the battery is missing, and the BATT INDIC switch is at the BATT
position

BAF, BATT1F, BATT2F

Power supply modules with two backup batteries have the following indicators:

Table 3-4 BAF, BATT1F, BATT2F LEDs

LED Color Meaning

BAF Red Lights up if the battery voltage on the backplane bus is too low
and the BATT INDIC switch is at the 1 BATT or 2 BATT position
BATTF Yellow Lights up if battery 1 is empty or if the polarity is reversed or if
the battery is missing, and the BATT INDIC switch is at the
1 BATT or 2 BATT position
BATTF Yellow Lights up if battery 2 is empty or if the polarity is reversed, or if
the battery is missing, and the BATT INDIC switch is at the
2 BATT position

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Power Supply Modules

Battery Voltage on the Backplane Bus

The battery voltage is either supplied by the backup battery or externally into the
CPU or receive IM. In its normal state, the level of the battery voltage is between
2.7 V and 3.6 V.
The battery voltage is monitored for the lower limit. Violation of the lower limit is
indicated by the BAF LED and reported to the CPU.
BAF lights up if the battery voltage on the backplane bus is too low. Possible
causes of this include:
• Battery (batteries) empty or battery polarity has been reversed.
• External supply via CPU or receive IM is defective or supply from secondary
power supply module is defective or missing.
• Short circuit or overload on the battery voltage.

Note
Due to internal capacities, if you remove the battery or switch off the external
supply, some time may elapse before BAF, BATT1F, or BATT2F lights up.

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 Power Supply Modules

Function of the Operator Controls

Table 3-5 Function of the operator controls of the power supply modules

FMR momentary- For acknowledging and resetting a fault indicator after correcting the
contact fault
pushbutton
Standby switch Switches the output voltages (5 VDC/24 VDC) to 0 V by intervening in
the control loop (no mains disconnection).
• I : Output voltages at rated value
• : Output voltages 0 V
BATT INDIC Used for setting LEDs and battery monitoring
switch
Where one battery can be used (PS 407 4A, PS 405 4A):
• OFF: LEDs and monitor signals inactive
• BATT: BAF/BATTF LEDs and monitor signals active
Where two batteries can be used (PS 407 10A, PS 407 20A, PS
405 10A, PS 405 20A):
• OFF: LEDs and monitor signals inactive
• 1 BATT: Only BAF/BATT1F LEDs (for battery 1) active.
• 2 BATT: BAF/BATT1F/BATT2F LEDs (for batteries 1 and 2) active.
Battery For backup battery (batteries)
compartment
Power 3-pin connector for line voltage connection (do not plug in or remove
connection when power is on).

Cover
The battery compartment, battery selector switch, voltage selector switch and
power connection are housed under one cover. The cover must remain closed
during operation in order to protect these operator controls and to prevent static
electricity from affecting the battery connections.
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.

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Power Supply Modules

3.5 Fault/Error Messages via LEDs

Introduction
The power supply modules of the S7-400 indicate module faults and backup
battery faults via LEDs on the front plate.

Overview of the Fault/Error Messages

Table 3-6 Error messages of the power supply modules

Type of Fault/Error LEDs

Module fault INTF
5 VDC
24 VDC
Backup battery fault Power supplies with 1 backup battery:
BAF
BATTF
Power supplies with 2 backup batteries:
BAF
BATT1F
BATT2F

INTF, 5 VDC, 24 VDC

The following table shows the faults indicated by the INTF, 5 VDC, and 24 VDC
LEDs and lists how to remedy the faults.
The status of the BAF, BATTF, BATT1F, and BATT2F LEDs is not relevant here.

Table 3-7 INTF, DC5V, DC24V LEDs

LED
INTF DC5V DC24V Cause of Fault Remedy
D D D Standby switch in position Set standby switch to the position
Line voltage missing Check line voltage
Internal fault, power supply module Replace power supply module
defective
Cutoff after overvoltage on 5 V or illegal Disconnect from mains and reconnect
external supply after approximately 1 minute; if
necessary, remove external supply
Power supply module operated in Install the power supply module in the
wrong slot correct slot (slot 1)
Short circuit or overload on 5 V Switch off the power supply module,
remove the source of the short circuit;
after approximately 3 seconds, the
power supply module can be switched
on with the standby switch or via the
power system.*
D L D Overvoltage on 24 V Check if the supply is external; if not,
replace power supply module

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Table 3-7 INTF, DC5V, DC24V LEDs, continued

LED
INTF DC5V DC24V Cause of Fault Remedy
D D* D Short circuit or overload on 5 V and Check load on the power supply
24 V and temperature overflow module.
Possibly remove modules
Wait 5 minutes before you restart the
power supply module
L L D If the standby switch is at the Remove all modules.
position, illegal external supply on 5 V Determine which module is faulty
If the standby switch is at the position, Check load on the power supply
short-circuit or overload on 24 V module.
Possibly remove modules
D F L Voltage restored after short circuit or Press FMR momentary-contact
overload on 5 V if faults occur in pushbutton:
operation Flashing light changes to constant light
Dynamic overload on 5 V Check load on the power supply
module.
Possibly remove modules
D L F Voltage restored after short-circuit or Press FMR momentary-contact
overload on 24 V if faults occur in pushbutton:
operation Flashing light changes to constant light
Dynamic overload on 24 V Check load on the power supply
module.
Possibly remove modules
D F F Voltage restored after short circuit or Press FMR momentary-contact
overload on 5 V and 24 V if faults occur pushbutton:
in operation Flashing light changes to constant light
D F F Dynamic overload on 5 V and 24 V Check load on the power supply
module.
Possibly remove modules

D = LED is dark; L = LED lights up; F = LED flashing;

* If the power supply module does not start up again after a few seconds once the
overload has been removed, remove power to the module for 5 minutes and then
switch it on again. If the module stills does not start up, you must replace it. This
applies to 6ES7407-0KA01-0AA0, release 3, for 6ES7407-0KR00-0AA0,
release ≤ 5, for 6ES7407-0KA01-0AA0, release ≥ 10 and for
6ES7405-0KA02-0AA0 as well as for the built-in temperature overflow protection.
If either the 5 VDC or 24 VDC LEDs remains dark after switching on, the system
has not powered up.
If either of the 5 VDC or 24 VDC LEDs of the PS 407 10AR remains dark for longer
than 1 or 2 seconds after it is switched on, the power supply module will not start
up.

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Power Supply Modules

The following power supply modules will switch off in the event of a short circuit or
overload after 1 s to 3 s. The module will try to restart after no more than 3 s. If the
error has been eliminated by then, the module will start up. This applies to the
following modules:
PS 405 4A (6ES7405-0DA01-0AA0) PS 407 4A (6ES7407-0DA01-0AA0)
PS 405 10A (6ES7405-0KA01-0AA0) PS 407 10A (6ES7407-0KA01-0AA0),
(6ES7405-0KA02-0AA0) release ≥5
PS 405 10A R (6ES7405-0KR00-0AA0) PS 407 10A R (6ES7407-0KR00-0AA0),
release ≥7
PS 405 20A (6ES7405-0RA01-0AA0) PS 407 20A (6ES7407-0RA01-0AA0)

Overload at 24 V
In the event of overload at 24 V the output current is electronically limited to a value
between 100% and 150% of the rated value. If the voltage then goes below the
undervoltage threshold of 19.2 V (--0/+ 5% corresponds to 19.2 V to 20.16 V), the
modules respond as follows:
• At the power supply modules 6ES740x-0DA01-0AA0, 6ES7405-0KA02-0AA0
and 6ES7407-0KA01-0AA0, version ≥ 10, the 24 V channel is switched off,
and then switched on again at a repetitive rate of approx. 0.5 to 1 s, until an
output voltage above the low--voltage threshold is built up.
• he voltage of 6ES7407-0KA01-0AA0, 6ES740x-0KR00-0AA0 and
6ES740x-0RA01-0AA0 power supply modules is automatically adjusted
according to the load resistance, the modules operate within the characteristics
curve.
After the overload has been eliminated, the voltage returns to the rated range and
the green 24 V LED flashes. The CPU sets the EXTF LED (external fault) and
saves the fault in the diagnostic buffer. You can trigger other responses, such as
CPU STOP or a message to a control room, in OB 81 (power supply error). If
OB 81 is not parameterized, the CPU continues as normal.

Overload at 5 V
In the event of an overload at 5V, the power supply modules with 10 A or 20 A
output current can retain an output current of 16 A or 26 A for 300ms. The power
supply modules with 4 A output current can retain an output current of 8 A for 300
ms. The CPU will then go to DEFECT afterwards. If the LED DC 5 V flashes on the
power supply and is resettable with the FMR button, you will be able to perform a
restart. The CPU will remain in STOP afterwards and will then require a memory
reset.

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BAF, BATTF
The following table applies to power supply modules with one battery if the BATT
INDIC switch is in the BATT position. It shows the faults indicated and lists how to
remedy the faults.

Table 3-8 BAF, BATTF; BATT INDIC LEDs on BATT

LED Cause of Fault Remedy

BAF BATT
F
L L Battery empty or missing Insert new battery.
No backup voltage available Press FMR momentary-contact
pushbutton
D L Battery empty or missing Insert new battery.
Press FMR momentary-contact
pushbutton
Battery has been stored for Depassivate battery
too long (see Installation Manual,
Manual Chapter 7)

L D Battery in order • Fault after plugging in a module:

No backup voltage available Plugged-in module defective
(short circuit) • Fault after switching on: Remove all
modules and plug in individually
D D Battery in order --

D = LED is dark; L = LED lights up;

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Power Supply Modules

BAF, BATT1F, BATT2F

The following table applies to power supply modules with two batteries if the BATT
INDIC switch is in the 1BATT position. It shows the faults indicated and lists how to
remedy the faults.
Nothing is indicated about the condition of any second battery that may be in use.

Table 3-9 BAF, BATT1F, BATT2F; BATT INDIC LEDs on 1BATT

LED Cause of Fault Remedy

BAF BATT1F BATT2F

L L D Battery 1 empty or missing Insert new battery in

No backup voltage available compartment 1.
Press FMR
momentary-contact
pushbutton
D L D Battery 1 empty or missing Insert new battery in
compartment 1.
Press FMR
momentary-contact
pushbutton
Battery has been stored for Depassivate battery
too long (see Installation Manual,
Chapter 6)
L D D Battery 1 in order • Fault after plugging in a
No backup voltage available module: Plugged-in
(short circuit) module defective
• Fault after switching on:
Remove all modules and
plug in individually
D D D Battery 1 in order --

D = LED is dark; L = LED lights up;

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The following table applies to power supply modules with two batteries if the BATT
INDIC switch is in the 2BATT position. It shows the faults indicated and lists how to
remedy the faults.

Table 3-10 BAF, BATT1F, BATT2F; BATT INDIC LEDs on 2BATT

LED Cause of Fault Remedy

BAF BATT1F BATT2F

L L L Both batteries are empty or Insert new batteries in compartments 1

missing. and 2
No backup voltage available Press FMR momentary-contact
pushbutton
D L L Both batteries empty or missing Insert new batteries in compartments 1
and 2
Press FMR momentary-contact
pushbutton
L L D Battery 1 empty or missing Insert new battery in compartment 1.
Press FMR momentary-contact
pushbutton
No backup voltage available • Fault after plugging in a module:
(short circuit or overload) Plugged-in module defective
• Fault after switching on: Remove all
modules and plug in individually
D L D Battery 1 empty or missing Insert new battery in compartment 1.
Press FMR momentary-contact
pushbutton
Battery has been stored for too Depassivate battery
long (see Installation Manual, Chapter 6)
L D L Battery 2 empty or missing Insert new battery in compartment 2.
Press FMR momentary-contact
pushbutton
No backup voltage available • Fault after plugging in a module:
(short-circuit or overload) Plugged-in module defective
• Fault after switching on: Remove all
modules and plug in individually
D D L Battery 2 empty or missing Insert new battery in compartment 2.
Press FMR momentary-contact
pushbutton
Battery has been stored for too Depassivate battery
long (see Installation Manual, Chapter 6)
L D D Both batteries in order. • Fault after plugging in a module:
No backup voltage available Plugged-in module defective
(short circuit) • Fault after switching on: Remove all
modules and plug in individually
D D D Both batteries in order. --

D = LED is dark; L = LED lights up;

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Power Supply Modules

3.6 Power Supply Module PS 407 4A;

(6ES7407-0DA01-0AA0)

Function
The PS 407 4A power supply module is designed for connecting to either an AC
line voltage of 85 to 264 V or a DC line voltage of 88 to 300 V and
supplies 5 VDC/4 A and 24 VDC/0.5 A on the secondary side.

Controls and Indicators of the PS 407 4 A

PS 407 4A

1
X 2
3 4
407-0DA01-0AA0
• Fixing screw
INTF

BAF
BATTF
• LEDs INTF,
5 VDC
BAF, BATTF,
24 VDC
DC 5 V, DC 24 V

FMR • FMR pushbutton (Failure Message Reset)

• Standby switch (does not cut off mains)

Under cover

• Battery compartment

BATT. INDIC.
BATT • Switches BATT. INDIC.
BATT, OFF
OFF

• 3-pin plug-in power connector

• Fixing screw

Figure 3-2 Controls and Indicators of the PS 407 4 A

Power connection
An AC power connector is used for connecting the PS 407 4A to both an AC and
DC supply.

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Polarity Reversal of L+ and L-

The polarity reversal of L+ and L- with supply voltages of between 88 VDC
and 300 VDC has no effect on the function of the power supply. The connection
should be made as described in the instructions in the Installation Manual,
Chapter 6.

Technical Specifications of the PS 407 4 A

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 25x290x217 Output voltages
Weight
g 0.76 kg
g • Rated values 5.1 VDC /24 VDC
Cable cross-section 3x1.5 mm 2 (litz wire Output currents
with wire end ferrule
with insulating collar;
• Rated values 5 VDC: 4 A
use only flexible 24 VDC: 0.5 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor

Input voltage Overvoltage category II

• Rated value 120/240 VDC Pollution severity 2
120/240 VAC
Rated voltage Ue Test Voltage
• Permitted range 88 to 300 VDC,
0 < Ue ≤ 50 V 700 VDC
85 to 264 VAC
(secondary <--> PE)
(long-range input)
150 V < Ue ≤ 300 V 2300 VDC
System frequency (primary <-->
• Rated value 50 / 60 Hz secondary/PE)
• Permitted range 47 to 63 Hz Buffering of power failures: >20 ms
Rated input current Complies with the
NAMUR
• At 120 VAC 0.38 A recommendation NE
• At 120 VDC 0.37 A 21 at a repeat rate of 1
• At 240 VAC 0.22 A s
• At 240 VDC 0.19 A Power consumption 240 VDC 52 W
Leakage current < 3.5 mA Power loss 20 W
Backup current Max. 100 µA at power
off
Backup battery (option) 1 x Lithium AA, 3.6 V /
1.9 Ah
Protective separation Yes
to IEC 61131-2

Automation System S7-400 Module Specifications

A5E00267842-02 3-19
Power Supply Modules

3.7 Power Supply Modules

PS 407 10A; (6ES7407-0KA01-0AA0) and
PS 407 10A R; (6ES7407-0KR00-0AA0)

Function
The power supply modules PS 407 10A (standard) and PS 407 10A R
(redundancy-capable, see Section 3.2) are designed for connection to an AC line
voltage of 85 to 264 V or DC line voltage of 88 to 300 V and supply 5 VDC/10 A
and 24 VDC/1 A on the secondary side.

Controls and Displays of the PS 407 10A and thge PS 407 10A R

PS 407 10A
1 X 2
3 4
2
• Fixing screw
407-0KR00-0AA0

INTF

BAF
BATTF
BATTF • LEDs INTF,
5 VDC BAF, BATT1F, BATT2F,
5 VDC, 24 VDC
24 VDC

FMR • FMR pushbutton (Failure Message Reset)

• Standby switch (does not cut off mains)

BATT.1 BATT.2

+ + Under cover
• Battery compartment
-- --

BATT. INDIC.
2 BATT
OFF
• Switches BATT. INDIC.
2 BATT, OFF, 1 BATT
1 BATT

• 3-pin plug-in power connector

• Fixing screw

Figure 3-3 Controls and Displays of the PS 407 10A and PS 407 10A R

Power Connection
An AC connector is used for connecting the PS 407 10A and the PS 407 10A R to
both an AC and a DC supply.

Automation System S7-400 Module Specifications

3-20 A5E00267842-02
 Power Supply Modules

Polarity Reversal of L+ and L-

The polarity reversal of L+ and L- with supply voltages of between 88 VDC
and 300 VDC has no effect on the function of the power supply. The connection
should be made as described in the instructions in the Installation Manual,
Chapter 4.

Technical Specifications of the PS 407 10A and the PS 407 10A R

Dimensions, Weight, and Cable Cross-Sections Output Variables

Dimensions WxHxD (mm) 50x290x217 Output voltages
Weight 1.36 kg • Rated values 5.1 VDC /24 VDC
Cable cross-section 1.2 kg, PS 407 as of Output currents
version 10 • Rated values 5 VDC: 10 A
3 x 1.5 mm2 (litz wire 24 VDC: 1.0 A
with wire end ferrule
with insulating collar; Other Parameters
use only flexible Protection class in accordance I, with protective
sheath cable) with IEC 61140 grounding conductor
Cable diameter 3 to 9 mm Overvoltage category II
Input Rating Pollution severity 2
Input voltage Rated voltage Ue Test Voltage
• Rated value 110/230 VDC 0 < Ue ≤ 50 V 700 VDC
• Permitted range 120/230 VAC (secondary <--> PE)
88 to 300 VDC, 150 V < Ue ≤ 300 V 2300 VDC
85 to 264 VAC (primary <-->
(long-range input) secondary/PE)
Buffering of power failures: > 20 ms
System frequency
Complies with the
• Rated value 50 / 60 Hz NAMUR
• Permitted range 47 to 63 Hz recommendation NE
21 at a repeat rate of 1
Rated input current
s
• At 120 VAC 1.2 A (0.9 A*)
Power input 105 W, PS 407 10A as
• At 110 VDC 1.2 A (1.0 A*) of version 5
• At 230 VAC 0.6 A (0.5 A*) 105 W, PS 407 10A R
• At 230 VDC 0.6 A (0.5 A*) as of version 7
Starting current inrush 95 W, PS 407 10A as
• At 230 VAC Peak value 230 A, of version 10
half-value width 200 µs Power loss 29.7 W
Peak value 63 A*, 20 W, PS 407 10A as
half-value width 1 ms* of version 10
• At 300 VDC Peak value 230 A, Backup current Max. 100 µA at power
half-value width 200 µs off
Peak value 58 A*, Backup batteries (optional) 2 x Lithium AA, 3.6 V /
half-value width 1 ms 1.9 Ah
Leakage current < 3.5 mA Protective separation Yes
to IEC 61131-2

* PS 407 10A: As of version 5

* PS 407 10A R: As of version 7

Automation System S7-400 Module Specifications

A5E00267842-02 3-21
Power Supply Modules

3.8 Power Supply Module PS 407 20A;

(6ES7407-0RA01-0AA0)

Function
The PS 407 20 A power supply module is designed for connecting to either an AC
line voltage of 85 to 264 VAC or a DC line voltage of 88 to 300 VDC and
supplies 5 VDC/20 A and 24 VDC/1 A on the secondary side.

Controls and Indicators of the PS 407 20 A

• Fixing screws
PS 407 20A

1 X 2 2 3
3 4
407-0RA01-0AA0

INTF

BAF
BATTF
BATTF • LEDs INTF,
5 VDC
BAF, BATT1F, BATT2F, 5 VDC, 24 VDC
24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch (does not cut off mains)

BATT.1 BATT.2
Under cover
+ +

• Battery compartment
-- --

BATT. INDIC.
2 BATT
• Switches BATT. INDIC.
2 BATT, OFF, 1 BATT
OFF
1 BATT

• 3-pin plug-in power connector

• Fixing screw

Figure 3-4 Controls and Indicators of the PS 407 20 A

Power Connection
An AC power connector is used for connecting the PS 407 20A to both an AC and
DC supply.

Automation System S7-400 Module Specifications

3-22 A5E00267842-02
 Power Supply Modules

Polarity Reversal of L+ and L-

The polarity reversal of L+ and L- with supply voltages of between 88 VDC
and 300 VDC has no effect on the function of the power supply. The connection
should be made as described in the instructions in the Installation Manual,
Chapter 6.

Technical Specifications of the PS 407 20 A

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 75x290x217 Output voltages
Weight 2.2 kg • Rated values 5.1 VDC /24 VDC
Cable cross-section 3x1.5 mm 2 (litz wire Output currents
with
ith wire
ire end ferrule
ferr le
with insulating collar;
• Rated values 5 VDC: 20 A
use only flexible 24 VDC: 1.0 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor

Input voltage Overvoltage category II

• Rated value 110/230 VDC Pollution severity 2
• Permitted range 120/230 VAC Rated voltage Ue Test Voltage
88 to 300 VDC, 0 < Ue ≤ 50 V 700 VDC
85 to 264 VAC (secondary <--> PE)
(long-range input)
150 V < Ue ≤ 300 V 2300 VDC
(primary <-->
System frequency secondary/PE)
• Rated value 50 / 60 Hz Buffering of power failures: > 20 ms
• Permitted range 47 to 63 Hz Complies with the
Rated input current NAMUR
recommendation NE
• At 120 VAC / 110 VDC 1.5 A 21 at a repeat rate of 1
• At 230 VAC / 230 VDC 0.8 A s
Starting current inrush Peak value 88 A Power input 168 W
half-value width 1.1 ms
Power loss 44 W
Leakage current < 3.5 mA
Backup current Max. 100 µA at power
off
Backup batteries (optional) 2 x Lithium AA,
3.6 V / 1.9 Ah
Protective separation Yes
to IEC 61131-2

Automation System S7-400 Module Specifications

A5E00267842-02 3-23
Power Supply Modules

3.9 Power Supply Module PS 405 4A;

(6ES7405-0DA01-0AA0)

Function
The PS 405 4A power supply module is designed for connection to a DC line
voltage of 19.2 to 72 VDC and supplies 5 VDC/4 A and 24 VDC/0.5 A on the
secondary side.

Controls and Indicators of the PS 405 4 A

PS 405 4A
1
X
3
2
4
• Fixing screw
INTF

BAF
BATTF
• LEDs INTF,
5 VDC
BAF, BATTF,
24 VDC
5 VDC, 24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch

Under cover

• Battery compartment

BATT. INDIC.
BATT
OFF • Switches BATT. INDIC.
BATT, OFF

• 3-pin plug-in power connector

• Fixing screw

Figure 3-5 Controls and Indicators of the PS 405 4 A

Automation System S7-400 Module Specifications

3-24 A5E00267842-02
 Power Supply Modules

Technical Specifications of the PS 405 4 A

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 25x290x217 Output voltages
Weight
g 0.76 kg
g • Rated values 5.1 VDC /24 VDC
Cable cross-section 3 x 1.5 mm2 (litz wire Output currents
with wire end ferrule;
use component
• Rated values 5 VDC: 4 A
conductor or flexible 24 VDC: 0.5 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor

Input voltage Overvoltage category II

• Rated value 24/48/60 VDC Pollution severity 2
• Permitted range Static: Rated voltage Ue Test Voltage
19.2 VDC to 72 VDC
0 < Ue ≤ 50 V 700 VDC
Dynamic: (secondary <--> PE)
18.5 VDC to 75.5 VDC
150 V < Ue ≤ 300 V 2200 VDC
Rated input current 2 A/1 A/0.8 A (primary <-->
secondary/PE)
Buffering of power failures: > 20 ms
Complies with the
NAMUR
recommendation NE
21 at a repeat rate of 1
s
Power consumption (24 VDC) 48 W
Power loss 16 W
Backup current Max. 100 µA at power
off
Backup battery (option) 1 x Lithium AA, 3.6 V /
1.9 Ah
Protective separation Yes
to IEC 61131-2

Automation System S7-400 Module Specifications

A5E00267842-02 3-25
Power Supply Modules

3.10 Power Supply Modules

PS 405 10A; (6ES7405-0KA01-0AA0) and
PS 405 10A R; (6ES7405-0KR00-0AA0)

Function
The power supply modules PS 405 10A (standard) and PS 405 10A R
(redundancy-capable, see Section 3.2) are designed for connection to a DC line
voltage of 19.2 VDC to 72 VDC and supply 5 VDC/10 A and 24 VDC/1 A on the
secondary side.

Controls and Displays of the PS 405 10A and the PS 405 10A R

PS 405 10 A

1
X
3
405-0KA01-0AA0
2
4
2
• Fixing screw
INTF

BAF
BATTF
BATTF • LEDs INTF,
5 VDC BAF, BATT1F, BATT2F,
5 VDC, 24 VDC
24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch

+
BATT.1 BATT.2
+
Under cover

• Battery compartment
-- --

BATT. INDIC.

• Switches BATT. INDIC.

2 BATT
OFF
1 BATT

2 BATT, OFF, 1 BATT

• 3-pin plug-in power connector

• Fixing screw

Figure 3-6 Controls and Displays of the PS 405 10A and PS 405 10A R

Automation System S7-400 Module Specifications

3-26 A5E00267842-02
 Power Supply Modules

Technical Specifications of the PS 405 10A and the PS 405 10A R

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 50x290x217 Output voltages
Weight 1 4 kg
1.4 • Rated values 5.1 VDC/24 VDC
Cable cross-section 3 x 1.5 mm2 ((litz wire Output currents
with
ith wire
i endd ferrule,
f l
p
use component
• Rated values 5 VDC: 10 A
conductor
d t or flflexible
ibl 24 VDC: 1.0 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor
Input voltage Overvoltage category II
• Rated value 24/48/60 VDC Pollution severity 2
• Permitted range Static: Rated voltage Ue Test Voltage
19.2 VDC to 72 VDC
0 < Ue ≤ 50 V 700 VDC
Dynamic: (secondary <--> PE)
18.5 VDC to 75.5 VDC
150 < Ue ≤ 300 V 2300 VDC
Rated input current 4.3 A/2.1 A/1.7 A (primary <-->
Starting current inrush Peak value 18 A secondary/PE)
Half-value width 20 ms Buffering of power failures: > 20 ms
Complies with the
NAMUR
recommendation NE
21 at a repeat rate of 1
s
Power input 104 W
Power loss 29 W
Backup current Max. 100 µA at power
off
Backup batteries (optional) 2 x Lithium AA, 3.6 V /
1.9 Ah
Protective separation Yes
to IEC 61131-2

Automation System S7-400 Module Specifications

A5E00267842-02 3-27
Power Supply Modules

3.11 Power Supply Modules

PS 405 10A; (6ES7405-0KA02-0AA0)

Function
The power supply module PS 405 10A is designed for connection to a DC line
voltage of 19.2 VDC to 72 VDC and supply 5 VDC/10 A and 24 VDC/1 A on the
secondary side.

Controls and Displays of the PS 405 10A

PS 405 10 A

1
X
3
405-0KA01-0AA0
2
4
2
• Fixing screw
INTF

BAF
BATTF
BATTF • LEDs INTF,
5 VDC BAF, BATT1F, BATT2F,
5 VDC, 24 VDC
24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch

+
BATT.1 BATT.2
+
Under cover

• Battery compartment
-- --

BATT. INDIC.

• Switches BATT. INDIC.

2 BATT
OFF
1 BATT

2 BATT, OFF, 1 BATT

• 3-pin plug-in power connector

• Fixing screw

Figure 3-7 Controls and Displays of the PS 405 10A

Automation System S7-400 Module Specifications

3-28 A5E00267842-02
 Power Supply Modules

Technical Specifications of the PS 405 10A

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 50x290x217 Output voltages
Weight 1 2 kg
1.2 • Rated values 5.1 VDC/24 VDC
Cable cross-section 3 x 1.5 mm2 ((litz wire Output currents
with
ith wire
i endd ferrule,
f l
p
use component
• Rated values 5 VDC: 10 A
conductor
d t or flflexible
ibl 24 VDC: 1.0 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor
Input voltage Overvoltage category II
• Rated value 24/48/60 VDC Pollution severity 2
• Permitted range Static: Rated voltage Ue Test Voltage
19.2 VDC to 72 VDC
0 < Ue ≤ 50 V 700 VDC
Dynamic: (secondary <--> PE)
18.5 VDC to 75.5 VDC
150 < Ue ≤ 300 V 2300 VDC
Rated input current 4.0 A/2.0 A/1.6 A (primary <-->
Starting current inrush Peak value 18 A secondary/PE)
Half-value width 20 ms Buffering of power failures: > 20 ms
Complies with the
NAMUR
recommendation NE
21 at a repeat rate of 1
s
Power input 95 W
Power loss 20 W
Backup current Max. 100 µA at power
off
Backup batteries (optional) 2 x Lithium AA, 3.6 V /
1.9 Ah
Protective separation Yes
to IEC 61131-2
EN 50021 category 3, zone 2 Yes

Automation System S7-400 Module Specifications

A5E00267842-02 3-29
Power Supply Modules

3.12 Power Supply Module PS 405 20A;

(6ES7405-0RA01-0AA0)

Function
The PS 405 20A power supply module is designed for connection to a DC line
voltage of 19.2 VDC to 72 VDC and supplies 5 VDC/20 A and 24 VDC/1 A on the
secondary side.

Controls and Indicators of the PS 405 20 A

PS 405 20A

1 X
3
2
4
2 3
• Fixing screws
405-0RA00-0AA0

INTF

• LEDs INTF,
BAF
BATTF
BATTF

BAF, BATT1F, BATT2F,

5 VDC, 24 VDC
5 VDC
24 VDC

FMR
• FMR pushbutton (Failure Message Reset)

• Standby switch
BATT.1 BATT.2 Under cover
+ +

• Battery compartment
-- --

BATT. INDIC.
2 BATT
OFF
1 BATT • Switches BATT. INDIC.
2 BATT, OFF, 1 BATT

• 3-pin plug-in power connector

• Fixing screws

Figure 3-8 Controls and Indicators of the PS 405 20 A

Automation System S7-400 Module Specifications

3-30 A5E00267842-02
 Power Supply Modules

Technical Specifications of the PS 405 20 A

Dimensions, Weight, and Cable Cross-Sections Output Rating

Dimensions WxHxD (mm) 75x290x217 Output voltages
Weight 2 2 kg
2.2 • Rated values 5.1 VDC/24 VDC
Cable cross-section 3x1.5 mm2 ((litz wire Output currents
with
ith wire
i end d ferrule;
f l
p
use component
• Rated values 5 VDC: 20 A
conductor
d t or flflexible
ibl 24 VDC: 1.0 A
sheath cable) Other Parameters
Cable diameter 3 to 9 mm Protection class in accordance I, with protective
Input Rating with IEC 61140 grounding conductor
Input voltage Overvoltage category II
• Rated value 24/48/60 VDC Pollution severity 2
• Permitted range Static: Rated voltage Ue Test Voltage
19.2 VDC to 72 VDC
0 < Ue ≤ 50 V 700 VDC
Dynamic: (secondary <--> PE)
18.5 VDC to 75.5 VDC
150 V < Ue ≤ 300 V 2300 VDC
Rated input current 7.3 A/3.45 A/2.75 A (primary <-->
Starting current inrush Peak value 56 A secondary/PE)
half-value width 1.5 ms Buffering of power failures: > 20 ms
Complies with the
NAMUR
recommendation NE
21 at a repeat rate of 1
s
Power input 175 W
Power loss 51 W
Backup current Max. 100 µA at power
off
Backup batteries (optional) 2 x Lithium AA, 3.6 V /
1.9 Ah
Protective separation Yes
to IEC 61131-2

Automation System S7-400 Module Specifications

A5E00267842-02 3-31
Power Supply Modules

Automation System S7-400 Module Specifications

3-32 A5E00267842-02
Digital Modules 4
Structure of the Chapter
The present chapter is subdivided into the following subjects:
1. Overview containing the modules that are available here and a description
2. Information that is generally valid -- in other words, relating to all digital modules
(for example, parameter assignment and diagnostics)
3. Information that refers to specific modules (for example, characteristics,
diagram of connections and block diagram, technical specifications and special
characteristics of the module):
a) for digital input modules
b) for digital output modules

Additional Information
Appendix A describes the structure of the parameter records (data records 0, 1 and
128) in the system data. You must be familiar with this structure if you want to
modify the parameters of the modules in the STEP 7 user program.
Appendix B describes the structure of the diagnostic data (data records 0, 1) in the
system data. You must be familiar with this structure if you want to evaluate the
diagnostic data of the modules in the STEP 7 user program.

Automation System S7-400 Module Specifications

A5E00267842-02 4-1
Digital Modules

Chapter Overview

Section Description Page

4.1 Module Overview 4-3
4.2 Sequence of Steps from Choosing to Commissioning the Digital 4-5
Module
4.3 Digital Module Parameter Assignment 4-6
4.4 Diagnostics of the Digital Modules 4-9
4.5 Interrupts of the Digital Modules 4-13
4.6 Input Characteristic Curve for Digital Inputs 4-15
4.7 Digital Input Module SM 421; DI 32 x 24 VDC; 4-17
(6ES7421-1BL01-0AA0)
4.8 Digital Input Module SM 421; DI 16 x 24 VDC; 4-20
(6ES7421-7BH01-0AB0)
4.9 Digital Input Module SM 421; DI 16 x120 VAC; 4-28
(6ES7421-5EH00-0AA0)
4.10 Digital Input Module SM 421; DI 16 x 24/60 VUC; 4-31
(6ES7421-7DH00-0AB0)
4.11 Digital Input Module SM 421; DI 16 x 120/230 VUC; 4-36
(6ES7421-1FH00-0AA0)
4.12 Digital Input Module SM 421; DI 16 x 120/230 VUC; 4-38
(6ES7421-1FH20-0AA0)
4.13 Digital Input Module SM 421; DI 32 x 120 VUC; 4-41
(6ES7421-1EL00-0AA0)
4.14 Digital Output Module SM 422; DO 16 x 24 VDC/2 A; 4-44
(6ES7422-1BH11-0AA0)
4.15 Digital Output Module SM 422; DO 16 x 20-125 VDC/1.5 A; 4-47
(6ES7422-5EH10-0AB0)
4.16 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A; 4-52
(6ES7422-1BL00-0AA0)
4.17 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A; 4-55
(6ES7422-7BL00-0AB0)
4.18 Digital Output Module SM 422; DO 8 x 120/230 VAC/5 A; 4-61
(6ES7422-1FF00-0AA0)
4.19 Digital Output Module SM 422; DO 16 x 120/230 VAC/2 A; 4-64
(6ES7422-1FH00-0AA0)
4.20 Digital Output Module SM 422; 4-68
DO 16 x 20-120 VAC/2 A; (6ES7422-5EH00-0AB0)
4.21 Relay Output Module SM 422; 4-72
DO 16 x 30/230 VUC/Rel. 5 A; (6ES7422-1HH00-0AA0)

Automation System S7-400 Module Specifications

4-2 A5E00267842-02
 Digital Modules

4.1 Module Overview

Introduction
The following tables summarize the most important characteristics of the digital
modules. This overview is intended to make it easy to choose the suitable module
for your task.

Table 4-1 Digital Input Modules: Characteristics at a Glance

SM 421; SM 421; SM 421; SM 421; SM 421; SM 421; SM 421;

Module
DI 32 x 24 DI 16 x 24 DI 16 x DI 16 x DI 16 x DI 16 x DI 32 x 120
VDC VDC 120 VAC 24/60 VUC 120/230 120/230 VUC
Characteristics (-1BL0x-) (-7BH00-) (-5EH00-) (-7DH00-) VUC VUC (-1EL00-)
(-1FH00-) (-1FH20-)
Number of 32 DI; 16 DI; 16 DI; 16 DI; 16 DI; 16 DI; 32 DI;
inputs isolated in isolated in isolated in isolated in isolated in isolated in isolated in
groups of groups of 8 groups of 1 groups of 1 groups of 4 groups of 4 groups of 8
32

Rated input 24 VDC 24 VDC 120 VAC 24 VUC to 120 VAC/ 120/230 120 VAC/
voltage 60 VUC 230 VDC VUC VDC
Suitable for... Switches
Two-wire proximity switches (BEROs)
Programmable No Yes No Yes No No No
diagnostics
Diagnostic No Yes No Yes No No No
Interrupt
Hardware No Yes No Yes No No No
interrupt upon
edge change
Adjustable input No Yes No Yes No No No
delays
Substitute value -- Yes -- -- -- -- --
output
Special Features High Quick and Channel- Interrupt For high, For high, High
packaging with specific capability variable variable packaging
density interrupt isolation with low, voltages voltages density
capability variable
Input
voltages
characte-
ristic curve
to IEC
61131-2

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A5E00267842-02 4-3
Digital Modules

Table 4-2 Digital Output Modules: Characteristics at a Glance

Module SM 422; SM 422; SM 422; SM 422; SM 422; SM 422; SM 422;

DO 16 x 24 DO 16 x DO DO 32 x 24 DO 8 x DO 16 x DO 16 x
VDC/2 A 20-125 32 x 24 VDC/0.5 A 120/230 120/230 20-120
(-1BH1x) VDC/1.5 A VDC/ 0.5 A (-7BL00) VAC/5 A VAC/2 A VAC/2 A
Characte- (-5EH10) (-1BL00) (-1FF00) (-1FH00) (-5EH00)
ristics
Number of 16 DO; 16 DO; 32 DO; 32 DO; 8 DO; 16 DO; 16 DO;
outputs isolated in isolated isolated in isolated in isolated in isolated in isolated in
groups of 8 and reverse groups of groups of 8 groups of 1 groups of 4 groups of 1
polarity 32
protection
in groups of
8
Output current 2A 1.5 A 0.5 A 0.5 A 5A 2A 2A
Rated load 24 VDC 20 to 125 24 VDC 24 VDC 120/ 120/ 20 to
voltage VDC 230 VAC 230 VAC 120 VAC
Programmable No Yes No Yes No No Yes
diagnostics
Diagnostic No Yes No Yes No No Yes
Interrupt
Substitute No Yes No Yes No No Yes
value output
Special For high For variable High Particularly For high -- For variable
Features currents voltages packaging quick and currents currents
density with with with
interrupt channel- channel-
capability specific specific
isolation isolation

Table 4-3 Relay Output Module: Characteristics at a Glance

Module SM 422; DO 16 x 30/230 VUC/Rel. 5 A

Characteristics (-1HH00)
Number of Outputs 16 outputs, isolated in groups of 8
Load Voltage 125 VDC
230 VAC
Special Features --

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4-4 A5E00267842-02
 Digital Modules

4.2 Sequence of Steps from Choosing to Commissioning

the Digital Module

Introduction
The following table contains the tasks that you have to perform one after the other
to commission digital modules successfully.
The sequence of steps is a suggestion, but you can perform individual steps either
earlier or later (for example, assign parameters to the module) or install other
modules or install, commission etc. other modules in between times.

Sequence of Steps

Table 4-4 Sequence of Steps from Choosing to Commissioning the Digital Module

Step Procedure Refer To...

1. Select the module Section 4.1 and specific module section from
Section 4.7
2. Install the module in the SIMATIC S7 “Installation” section in the manual S7-400
network Programmable Controllers, Hardware and Installation
3. Assign parameters to module Section 4.3 and, if necessary, the specific module
section as of Section 4.7
4. Commission configuration Section on commissioning in the manual S7-400
Programmable Controllers, Hardware and Installation
5. If commissioning was not successful, Section 4.4
diagnose configuration

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A5E00267842-02 4-5
Digital Modules

4.3 Digital Module Parameter Assignment

Introduction
Digital modules can have different characteristics. You can set the characteristics
of dome modules by means of parameter assignment.

Tools for Parameter Assignment

You assign parameters to digital modules in STEP 7.
When you have set all the parameters, download the parameters from the
programming device to the CPU. When there is a transition from STOP to RUN
mode, the CPU transfers the parameters to the individual digital modules.

Static and dynamic parameters

The parameters are divided into static and dynamic parameters.
Set the static parameters in STOP mode of the CPU, as described above.
In addition, you can modify the dynamic parameters in the current user program in
an S7 programmable controller by means of SFCs. Note, however, that after a
change from RUN → STOP, STOP → RUN of the CPU, the parameters set in
STEP 7 apply again. You will find a description of the parameter assignment of
modules in the user program in Appendix A.

Configuration in RUN (CiR)

The parameters are divided into static and dynamic parametersCiR (Configuration
in RUN) is a method you can use to modify your system or edit the parameters of
individual modules. These changes are made while your system is in operation,
that is, your CPU will stay in RUN over a period of max. two seconds while these
changes are applied.
For detailed information on this topic, refer to the “Configuration in RUN by means
of CiR” manual. This manual is found, for example, as a file in PDF format on your
included STEP 7 CD.

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4.3.1 Parameters of the Digital Input Modules

The parameterized digital input modules use a subset of the parameters and
ranges of values listed in the table below, depending on functionality. Refer to the
section on a particular digital module, starting from Section 4.7, to find out which
subset it is capable of using.
Don’t forget that some digital modules have different time delays after parameter
assignment.
The default settings apply if you have not performed parameter assignment in
STEP 7.

Table 4-5 Parameters of the Digital Input Modules

Parameter Value Range Default2 Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for 1 to 4
--
Static Module
interrupt
Diagnostics
• Wire break Yes/no No
Static Channel
• No load voltage Yes/no No
L+/sensor supply
Trigger for hardware
interrupt
• Rising (positive) edge Yes/no No Dynamic Channel
No
• Falling (negative) edge Yes/no
Input delay 0.1 ms (DC) 3 (DC) Static Channel
0.5 ms (DC)
3 ms (DC)
20 ms (DC/AC)
Reaction to error Substitutea value (SV) SV Dynamic Module
Keep last value (KLV)
Substitute“1” Yes/no No Dynamic Channel 3)
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is It possible to start up the digital modules with the default settings and
without HWCONFIG support.
3) Channels not selected for substitution value “1” are set to substitution value “0”.

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4.3.2 Parameters of the Digital Output Modules

The parameterized digital output modules use a subset of the parameters and
ranges of values listed in the table below, depending on the functionality. Refer to
the section on the relevant digital module, starting from Section 4.16, to find out
which subset it is capable of using.
The default settings apply if you have not performed parameter assignment in
STEP 7.

Table 4-6 Parameters of the Digital Output Modules

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Destination CPU for 1 to 4
--
Static Module
interrupt
Reaction to CPU-STOP Substitute a value (SV) SV Dynamic Module
Keep last value (KLV)
Diagnostics
• Wire break Yes/no No
• No load voltage L+ Yes/no No
Static Channel
• Short circuit to M Yes/no No
• Short circuit to L+ Yes/no No
• Fuse blown Yes/no No
Substitute “1” Yes/no No Dynamic Channel 3)
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings and
without support from HWCONFIG.
3) Channels not selected for substitution value “1” are set to substitution value “0”.

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4.4 Diagnostics of the Digital Modules

Programmable and Non-Programmable Diagnostic Messages

In diagnostics, we make a distinction between programmable and
non-programmable diagnostic messages.
You obtain programmable diagnostic messages only if you have enabled
diagnostics by parameter assignment. You perform parameter assignment in the
”Diagnostics” parameter block in STEP 7 (refer to Section 5.7).
Non-programmable diagnostic messages are always made available by the digital
module irrespective of diagnostics being enabled.

Actions Following Diagnostic Message in STEP 7

Each diagnostic message leads to the following actions:
• The diagnostic message is entered in the diagnostics of the digital module,
forwarded to the CPU and can be read out by the user program.
• The fault LED on the digital module lights up.
• If you have parameterized “Enable Diagnostic Interrupt” in STEP 7, a diagnostic
interrupt is triggered and OB 82 is called (refer to Section 4.5).

Reading Out Diagnostic Messages

You can read out detailed diagnostic messages by means of SFCs in the user
program (refer to the Appendix “Diagnostic Data of Signal Modules”).
You can view the cause of the error in STEP 7 in the module diagnosis
(refer to the STEP 7 online help system).

Diagnostics Using the INTF and EXTF LEDs

Some digital modules indicate faults by means of their two fault LEDs INTF
(internal fault) and EXTF (external fault). The LEDs go out when all the internal and
external faults have been eliminated.
Refer to the technical specifications of the modules, starting at Section 4.7, to find
out which digital modules have these fault LEDs.

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Diagnostic Messages of the Digital Modules

The table below gives an overview of the diagnostic messages for the digital
modules with diagnostics capability.
You can find out which diagnostic message each module is capable of in the
Appendix entitled “Diagnostic Data of the Signal Modules”.

Table 4-7 Diagnostic Messages of the Digital Modules

Diagnostic Message LED Scope of the Parameters Can

Diagnosis Be Assigned
Module problem INTF/EXTF Module No
Internal malfunction INTF Module No
External malfunction EXTF Module No
Channel error present INTF/EXTF Module No
External auxiliary supply missing EXTF Module No
Front connector missing EXTF Module No
Module not parameterized. INTF Module No
Wrong parameters INTF Module No
Channel information available INTF/EXTF Module No
STOP mode -- Module No
Internal voltage failure INTF Module No
EPROM error INTF Module No
Hardware interrupt lost INTF Module No
Parameter assignment error INTF Channel No
Short-circuit to M EXTF Channel Yes
Short-circuit to L+ EXTF Channel Yes
Wire break EXTF Channel Yes
Fuse blown INTF Channel Yes
Sensor supply missing EXTF Channel/channel
Yes
group
No load voltage L+ EXTF Channel/channel
Yes
group

Note
A prerequisite for detecting the errors indicated by programmable diagnostic
messages is that you have assigned parameters to the digital module accordingly
in STEP 7.

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Causes of Errors and Remedial Measures for Digital Modules

Table 4-8 Diagnostic Messages of the Digital Modules, Causes of Errors and Remedial
Measures

Diagnostic Message Possible Error Cause Remedy

Module malfunction An error detected by the module -
has occurred
Internal malfunction The module has detected an error -
within the programmable controller
External malfunction The module has detected an error -
outside the programmable controller
There is a channel Indicates that only certain channels -
error are faulty
No external auxiliary Voltage required to operate the Supply missing voltage
voltage module is missing (load voltage,
sensor supply)
No front connector Jumper between connections 1 and Install jumper
2 in the front connector missing
Parameters have not The module requires the information Message queued after power-on until
been assigned to the as to whether it should work with parameter transmission by the CPU has
module system default parameters or with been completed; parameterize the
your parameters module, as required
Wrong parameters One parameter or the combination Reassign module parameter
of parameters is not plausible
Channel information Channel error present; the module -
available can supply additional channel
information
Operating mode Module was not parameterized and If after rebooting the CPU all the input
STOP the first module cycle has not been values are in the intermediate memory,
completed this message is reset
Internal voltage failure Module is defective Replace module
EPROM error Module is defective Replace module
Hardware interrupt lost The module cannot send an Change the interrupt handling in the CPU
interrupt, since the previous (change priority for interrupt OB; shorten
interrupt was not acknowledged; interrupt program)
configuration error possible

Parameter assignment Incorrect parameters transferred to Reassign module parameter

error the module (for example, impossible
input delay); the corresponding
channel is deactivated
Short circuit to M Overload of output Eliminate overload
Short-circuit of output to M Check the wiring of the outputs
Short circuit to L+ Short circuit of output to L+ Check the wiring of the outputs
Wire break Lines interrupted Close circuit
No external sensor supply Wire sensors with 10 kΩ to 18 kΩ
Channel not connected (open) Disable the “Diagnostics -- Wire Break”
parameter for the channel in STEP 7
Connect channel

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Table 4-8 Diagnostic Messages of the Digital Modules, Causes of Errors and Remedial
Measures, continued

Diagnostic Message Possible Error Cause Remedy

Fuse blown One or more fuses on the module Remove the overload and replace the
has blown and caused this fault. fuse
No sensor supply Overload of sensor supply Eliminate overload
Short circuit of sensor supply to M Eliminate short circuit
No Power supply L+ to module missing Feed in supply voltage L+
l d voltage
load lt L
L+
Fuse in module is defective Replace module

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4.5 Interrupts of the Digital Modules

Introduction
This section describes the interrupt behavior of the digital modules. The following
interrupts exist:
• Diagnostic Interrupt
• Hardware interrupt
Note that not all digital modules have interrupt capability or they are only capable of
a subset of the interrupts described here. Refer to the technical specifications of
the modules, starting at Section 4.7, to find out which digital modules have interrupt
capability.
The OBs and SFCs mentioned below can be found in the online help system for
STEP 7, where they are described in greater detail.

Enabling Interrupts
The interrupts are not preset -- in other words, they are inhibited without
appropriate parameter assignment. You enable the interrupts in STEP 7
(refer to Section 4.3).

Special Feature: The Module is Inserted in ER-1/ER-2

Note
If you use the digital module in ER-1/ER-2, you must set the parameters for
enabling all the interrupts to “No” because the interrupt lines are not available in
ER-1/ER-2.

Diagnostic Interrupt
If you have enabled diagnostic interrupts, then active error events (initial
occurrence of the error) and departing error events (message after troubleshooting)
are reported by means of an interrupt.
The CPU interrupts the execution of the user program and processes the
diagnostic interrupt block (OB 82).
In the user program, you can call SFC 51 or SFC 59 in OB 82 to obtain more
detailed diagnostic information from the module.
The diagnostic information is consistent until such time as OB 82 is exited. When
OB 82 is exited, the diagnostic interrupt is acknowledged on the module.

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Hardware Interrupt
A digital input module can trigger a hardware interrupt for each channel at a rising
or falling edge, or both, of a signal status change.
You perform parameter assignment for each channel separately. It can be modified
at any time (in RUN mode using the user program).
Pending hardware interrupts trigger hardware interrupt processing in the CPU
(OB 40 to OB 47). The CPU interrupts the execution of the user program or of the
priority classes with low priority.
In the user program of the hardware interrupt OB (OB 40 to OB 47) you can specify
how the programmable controller is to respond to an edge change. When the
hardware interrupt OB is exited, the hardware interrupt is acknowledged on the
module.
For each channel the digital input module can buffer an interrupt that has not been
triggered. If no higher priority run-time levels are waiting to be processed, the
buffered interrupts (of all modules) are serviced one after the other by the CPU
according to the order in which they occurred.

Hardware Interrupt Lost

In an interrupt has been buffered for a channel and another interrupt occurs on that
channel before it has been processed by the CPU, a diagnostic interrupt “hardware
interrupt lost” is triggered.
More interrupts on this channel are not acquired until processing of the interrupt
buffered on this channel has been executed.

Interrupt-Triggering Channels
The interrupt-triggering channels are stored in the local data of the hardware
interrupt OBs (in the start information of the corresponding OB). The start
information is two words long (bits 0 to 31). The bit number is the channel number.
Bits 16 to 31 are not assigned.

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4.6 Input Characteristic Curve for Digital Inputs

IEC 61131--2, Type 1 and Type 2

The IEC 61131--2 standard requires the following for the input current:
• In the case of type 2, an input current of ≧ 2 mA already at + 5 V
• In the case of type 1, an input current of ≧ 0.5 mA already at + 5 V

EN 60947-5-2, Two-Wire BEROs

The standard for BEROs (EN 60947-5-2) specifies that there can be a current of
≤ 1.5 mA for BEROs in the “0” signal state.
The input current of the module in the ”0” signal state is decisive for the operation
of two-wire BEROs. This must be in accordance with BERO requirements.

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Digital Modules

Input Characteristic Curve for Digital Inputs

As long as the current flowing into the module remains ≤ 1.5 mA, the module
recognizes this as a “0” signal.

Typ. switching threshold

(9.5 V) Resistance characteristic
I E (mA) curve

7
I min to IEC 61131--2;
6 type 2

BERO
standard
I ≤ 1.5 mA

2 I min to IEC 61131--2;

1.5 type 1
0.5

-- 30 V 0 5 11 13 15 24 30 L+ (V)

“0” “1”

L+

1
2-Wire BERO
0 I ≤ 1.5 mA --> “0” signal

PLC
input resistance
M

Figure 4-1 Input Characteristic Curve for Digital Inputs

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4.7 Digital Input Module SM 421; DI 32 x 24 VDC;

(6ES7421-1BL01-0AA0)

Characteristics
The digital input module SM 421; DI 32 x 24 VDC has the following features:
• 32 inputs, isolated in a group of 32
• 24 VDC rated input voltage
• Suitable for switches and two/three/four-wire proximity switches (BEROs,
IEC 61131--2; type 1)
The status LEDs indicate the process status.

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Digital Modules

Terminal Assignment and Block Diagram of the SM 421; DI 32 x 24 VDC

Process Module

1
2
L+ 3
4 0
5 1
6 2
7 3
8 4
9 5
10 6
11 7 M
12
13
14
15 0
16 1
17 2
18 3
19 4

Data register and bus control

20 5
21 6
22 7
23
24
25
26
27 0
28 1
29 2
30 3
31 4
32 5
33 6
34 7
35
36
37
38
39 0
40 1
41 2
42 3
43 4
44 5
45 6
46 7
47
M 48 M

Figure 4-2 Terminal Assignment and Block Diagram of the SM 421; DI 32 x 24 VDC

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Technical Specifications of the SM 421; DI 32 x 24 VDC

Dimensions and Weight Status, Interrupts, Diagnostics

Dimensions W x H x D 25 x 290 x 210 Status display Green LED per
(in millimeters) channel
Weight Approx. 500 g Interrupts None
Data for Specific Module Diagnostic functions None
Number of inputs 32 Substitute value can be applied No
Length of cable Data for Selecting a Sensor
• Unshielded Max. 600 m Input voltage
• Shielded Max. 1000 m • Rated value 24 VDC
Voltages, Currents, Potentials • For signal “1” 13 V to 30 V
Power rated voltage of the Not required • For signal “0” -30 V to 5 V
electronics L+ Input current
Number of inputs that can be 32 • At signal “1” 7 mA
triggered simultaneously
Input delay
Isolation
• At “0” to “1” 1.2 ms to 4.8 ms
• Between channels and Yes
• At “1” to “0” 1.2 ms to 4.8 ms
backplane bus
Input characteristic curve To IEC 61131--2; type
• Between the channels No 1
Permitted potential difference Connection of two-wire BEROs Possible
• Between the different 75 VDC / 60 VAC
circuits • Permitted bias current Max. 1.5 mA

Insulation tested with

• Channels against 500 VDC
backplane bus and load
voltage L+
Current consumption
• From the backplane bus Max. 20 mA
Power dissipation of the Typ. 6 W
module

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Digital Modules

4.8 Digital Input Module SM 421; DI 16 x 24 VDC;

(6ES7421-7BH01-0AB0)

Characteristics
The digital input module SM 421; DI 16 x 24 VDC has the following features:
• 16 inputs, isolated in 2 groups of 8
• Very fast signal processing: input filter as of 50 ms
• 24 VDC rated input voltage
• Suitable for switches and two/three/four-wire proximity switches
(BEROs, IEC 61131--2; type 2)
• 2 short-circuit-proof sensor supplies for 8 channels each
• External redundant power supply possible to supply sensors
• “Sensor supply (Vs) O.K.” status display
• Group error display for internal faults (INTF) and external faults (EXTF)
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt
• Programmable input delays
• Parameterizable substitute values in the input range
The status LEDs indicate the process status.

Note
The spare parts of this module is compatible with SM 421; DI 16 x DC 24 V;
(6ES7421-7BH00-0AB0).
To be able to use the new function “input delay 50 ms”, you require STEP 7 as of
V 5.2.

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Terminal Assignment and Block Diagram of the SM 421; DI 16 x 24 VDC

Front connector monitoring

1 INTF
Monitoring of external auxiliary supply 1L+
2 EXTF
Monitoring of internal voltage
1L+ 3 1L+ 1L+
4 0
5
6 1
7
8 2
9
10 3
11
12
24 V 1M
13 1Vs
14
Short-circuit 1L+
15 4
protection

Backplane bus interface

16
17 5
Monitoring of sensor supply 1Vs
18
19 6
20
21 7
22
1M 23 1M 1M
24 1M
Monitoring of external auxiliary supply 2L+
25 2L+ Monitoring of internal voltage
2L+ 26 2L+ 2L+
27 0
28
29 1
30
31 2
32
33 3
34
35
24 V
36 2M
37 Short-circuit 2L+
2Vs protection
38
39 4
40 Monitoring of sensor supply 2Vs
41 5
42
43
6
44
45
7
46
47
2M
2M 48 2M
2M
L+ M
24 V

Figure 4-3 Terminal Assignment and Block Diagram of the SM 421; DI 16 x 24 VDC

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Digital Modules

Terminal Assignment Diagram for Redundant Supply of Sensors

The figure below shows how sensors can additionally be supplied by means of Vs
with a redundant voltage source -- for example, via another module).

L+ 1 L+
Short-circuit-
proof driver Vs
2 L+
Digital input M
module ↓
to the sensors

Figure 4-4 Terminal Assignment Diagram for the Redundant Supply of Sensors of the
SM 421; DI 16 x 24 VDC

Technical Specifications of the SM 421; DI 16 x 24 VDC

Dimensions and Weight Voltages, Currents, Potentials

Dimensions W × H × D 25 × 290 × 210 Rated supply voltage of the 24 VDC
(in millimeters) electronics and sensor L+
Weight Approx. 600 g • Reverse polarity protection Yes
Data for Specific Module Number of inputs that can be 16
triggered simultaneously
Number of inputs 16
Isolation
Length of cable
• Unshielded
• Between channels and Yes
backplane bus
input delay
-- 0.1 ms Max. 20 m • Between channels and No
power supply of the
-- 0.5 ms Max. 50 m electronics
-- 3 ms Max. 600 m
• Between the channels Yes
• Shielded
-- In groups of 2
input delay
-- 0.1 ms Max. 30 m Permitted potential difference
-- 0.5 ms Max. 70 m • Between the different 75 VDC, 60 VAC
circuits
-- 3 ms Max. 1000 m
Insulation tested with
• Channels against 500 VDC
backplane bus and load
voltage L+
• Channel groups between 500 VDC
themselves
Current consumption
• From the backplane bus Max. 130 mA
• From the power supply L+ Max. 120 mA
Power dissipation of the Typ. 5 W
module

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Status, Interrupts, Diagnostics Time, Frequency

Status display Green LED per Internal preparation time 1) for
channel
• only status recognition
Interrupts -- Input delay of the max. 50 ms
• Hardware interrupt Parameters can be channel groups
assigned 0.05 ms/0.05 ms
• Diagnostic Interrupt Parameters can be -- Input delay of the
assigned channel groups max. 70 ms
Diagnostic functions 0.05 ms/0.1 ms or 0.1
ms/0.1 ms
• Monitoring of the power Yes
supply voltage of the -- Input delay of the max. 180 ms
electronics channel groups
>= 0.5 ms
• Load voltage monitor Green LED per group
• Status recognition and
• Group error display enable process interrupt max. 60 ms
-- For internal fault Red LED (INTF) -- Input delay of the
-- For external fault Red LED (EXTF) channel groups
0.05 ms/0.05 ms 2)
• Channel error display (F) None
-- Input delay for the
• Diagnostic information can Yes channel groups max. 80 ms
be displayed 0.05 ms/0.1 ms or 0.1
Monitoring for ms/0.1 ms

• Wire break I < 1 mA -- Input delay of the max. 190 ms

channel groups
Substitute value can be applied Yes >= 0.5 ms
Sensor Power Supply Outputs Internal preparation time for max. 5 ms
Number of outputs 2 diagnostics/diagnostic interrupt
Input delay
Output voltage
• with load Min. L+(--2.5 V) • Parameters can be Yes
assigned
Output current
• Rated value 0.1/0.5/3 ms
• Rated value 120 mA
• Permitted range 0 to 150 mA • Input frequency < 2 kHz
(with a time delay of
Additional (redundant) supply Possible 0.1 ms)
Short-circuit protection Yes, electronic Values go into cycle and response times.
Data for Selecting a Sensor Sensor Circuit
Input voltage Resistance circuit of the sensor 10 to 18 kΩ
• Rated value 24 VDC for wire break monitoring
• For signal “1” 11 V to 30 V 1) The filter times are added to the overall runtime of the
• For signal “0” -30 V to 5 V selected input delay.
2) Substitute functionality; diagnostics and diagnostic
Input current
interrupt are not to be selected.
• At signal “1” 6 mA to 12 mA
• At signal “0” < 6 mA
Input characteristic curve To IEC 61131--2;
type 2
Connection of two-wire BEROs Possible
• Permitted bias current Max. 3 mA

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4.8.1 Assigning Parameters to the SM 421; DI 16 x 24 VDC

Parameter Assignment
You will find a description of the general procedure for assigning parameters to
digital modules in Section 4.3.

Parameters of the SM 421; DI 16 x 24 VDC

You will find an overview of the parameters you can set and their default settings
for the SM 421; DI 16 x 24 VDC in the table below.

Table 4-9 Parameters of the SM 421; DI 16 x 24 VDC

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for 1 to 4
--
Static Module
interrupt
Diagnostics
Channel
• Wire break Yes/no No
Static Channel
• No load voltage Yes/no No
group
L+/sensor supply
Trigger for hardware
interrupt
-- D a i
Dynamic Cha
Channel
l
• Rising edge Yes/no
• Falling edge Yes/no
Input delay 0.05 ms 3 ms Static Channel
0.1 ms group
0.5 ms
3 ms
Reaction to Error Substitute a Value (SV) SV Dynamic Module
Keep Last Value (KLV)
Enable substitute value “1” Yes/no No Dynamic Channel
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are not
available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings.

Assignment of the Encoder Supplies to Channel Groups

The two encoder supplies of the module are used to supply two channel groups:
inputs 0 to 7 and inputs 8 to 15. In these two channel groups, you parameterize the
diagnostics for the encoder supply, too.

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Ensuring a Wire Break Check Is Carried Out

To ensure that a wire break check is carried out, you require an external sensor
circuit using a resistor of 10 kΩ to 18 kΩ. The resistor should be connected parallel
to the contact and should be arranged as closely as possible to the sensor.
This additional resistor is not required in the following cases:
• If two-wire BEROs are used
• If you don’t parameterize the “Wire Break” diagnosis

Setting the Input Delay for Channel Groups

You can only set the input delay for each group of channels. In other words, the
setting for channel 0 applies to inputs 0 to 7 and the setting for channel 8 applies to
inputs 8 to 15.

Note
The parameters that are entered for the remaining channels (1 to 7 and 9 to 15)
must be equal to the value 0 or 8, otherwise those channels will be reported as
being incorrectly parameterized.
Any hardware interrupts that have occurred in the meantime will be reported after
acknowledgement.

Optimum Signal Propagation Delay

You can achieve the fastest signal propagation delay with the following settings:
• Both channel groups are parameterized with an input delay of 50 µs
• All the diagnoses (load voltage error, wire break) are deactivated
• Diagnostic interrupt is not enabled

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4.8.2 Behavior of the SM 421; DI 16 x 24 VDC

Effect of Operating Mode and Supply Voltage on the Input Values

The input values of the SM 421; DI 16 x 24 DC depend on the operating mode of
the CPU and on the supply voltage of the module.

Table 4-10 How the Input Values Depend on the Operating Mode of the CPU and on the
Supply Voltage L+ of the SM 421; DI 16 x 24 VDC

CPU Operating Mode Power Supply L+ Input Value of Digital Module

to Digital Module
POWER ON RUN L+ exists Process value
L+ missing 0 signal *
STOP L+ exists Process value
L+ missing 0 signal*
POWER -- L+ exists --
OFF
L+ missing --

* Depends on the parameter assignment (see Table 4-9 )

Behavior upon Failure of the Supply Voltage

Failure of the supply voltage of the SM 421; DI 16 x 24 DC is always indicated by
the EXTF LED on the module. Furthermore, this information is made available on
the module (entry in diagnosis).
Triggering of the diagnostic interrupt depends on the parameter assignment.

Short-Circuit of Sensor Supply Vs

Irrespective of the parameter assignment, the corresponding Vs LED goes out if a
short-circuit of the encoder supply Vs occurs.

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Effect of Errors and Parameter Assignment on the Input Values

The input values of the SM 421; DI 16 x 24 DC are affected by certain errors and
the parameter assignment of the module. The following table lists the effects on the
input values.
You will find more diagnostic messages of the module in the Appendix entitled
“Diagnostic Data of the Signal Modules”.

Table 4-11 How the Input Values Are Affected by Faults and by the Parameter Assignment of the
SM 421; DI 16 x 24 VDC

Diagnostic Message “Diagnostics” “Reaction to Input Value of Digital Module

Parameter Error”
Parameter
Module not Cannot be Not relevant 0 signal (all channels)
parameterized disabled
No front connector SV Parameterized substitute value
KLV Last read, valid value
Incorrect parameters Cannot be Not relevant 0 signal (module/all incorrectly
(module/channel) disabled parameterized channels)
STOP operating mode Cannot be -- Process value (not updated)
disabled
Internal voltage failure Cannot be SV Parameterized substitute value
di bl d
disabled
KLV Last read, valid value
Hardware interrupt lost Cannot be Not relevant Current process value
disabled
Wire break (for each Deactivated -- 0 signal
channel)
h l)
Activated SV Parameterized substitute value
KLV Last read, valid value
Sensor supply missing Deactivated -- 0 signal
( l activated
(also ti t d via
i ”No
”N
Activated SV Parameterized substitute value
Load Voltage L+
L+”))
KLV Last read, valid value
No load voltage L+ (for Deactivated -- 0 signal, if the contact is connected via the
each channel group) sensor supply; process value for the
external sensor supply
Activated SV Parameterized substitute value
KLV Last read, valid value

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Digital Modules

Behavior when the Input Delay Equals 0.1 ms and an Error Occurs
If you have parameterized the following:
• An input delay of 0.1 ms or 0.05 ms
• KLV or SV as the response to an error
• Substitute “1”
In the event of a fault on a channel that has a 1 signal, the following could occur:
• An 0 signal may be briefly output
• If parameterized, a hardware interrupt may be generated
This occurs before the last valid value or substitute value “1” is output.

4.9 Digital Input Module SM 421; DI 16 x 120 VAC;

(6ES7421-5EH00-0AA0)

Characteristics
The SM 421; DI 16 x 120 VAC has the following features:
• 16 inputs, isolated
• 120 VAC rated input voltage
• Suitable for switches and two-wire proximity switches
(BEROs, IEC 61131--2; type 2)

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 Digital Modules

Terminal Assignment Diagram of the SM 421; DI 16 x 120 VAC

Process Module
1
2
Byte 0 3
4 0 Adaptation
5 1N
6 1 Adaptation
7 2N
8 2 Adaptation
9 3N
10 3 Adaptation
11 4N
12
13
14
15 4 Adaptation
16 5N
17 5 Adaptation
18 6N
19 6 Adaptation

Data register and bus control

20 7N
21 7 Adaptation
22 8N
23
24
25
Byte 1 26
27 0 Adaptation
28 9N
29 1 Adaptation
30 10N
31 2 Adaptation
32 11N
33 3 Adaptation
34 12N
35
36
37
38
39 4 Adaptation
40 13N
41 5 Adaptation
42 14N
43 6 Adaptation
44 15N
45 7 Adaptation
46 16N
47
48

Figure 4-5 Terminal Assignment Diagram of the SM 421; DI 16 x 120 VDC

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Digital Modules

Technical Specifications of the SM 421; DI 16 x 120 VAC

Dimensions and Weight Sensor Selection Data

Dimensions W x H x D 25 x 290 x 210 Input voltage
(in millimeters) • Rated value 120 V
Weight Approx. 650 g • For signal “1” 72 to 132 VAC
Data for Specific Module • For signal “0” 0 to 20 V
Number of inputs 16 • Frequency range 47 to 63 Hz

Length of cable Input current

• Unshielded 600 m • At signal “1” 6 to 20 mA
• Shielded 1000 m • At signal “0” 0 to 4 mA

Voltages, Currents, Potentials Input delay

Number of inputs that can be 16

• At “0” to “1” 2 to 15 ms
triggered simultaneously • At “1” to “0” 5 to 25 ms

Isolation Input characteristic curve To IEC 61131--2; type

2
• Between channels and Yes
backplane bus Connection of two-wire BEROs Possible

• Between the channels Yes • Permitted bias current Max. 4 A

-- In groups of 1
Permitted potential difference
• Between Minternal and the 120 VAC
inputs
• Between the inputs of the 250 VAC
different groups
Insulation tested with 1500 VAC
Current consumption
• From the backplane bus Max. 0.1 A
Power dissipation of the Typ. 3.0 W
module
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts None
Diagnostic functions None

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 Digital Modules

4.10 Digital Input Module SM 421; DI 16 x 24/60 VUC;

(6ES7421-7DH00-0AB0)

Characteristics
The SM 421; DI 16 x 24/60 VUC is characterized by the following features:
• 16 inputs, individually isolated
• Rated input voltage 24 VUC to 60 VUC
• Suitable for switches and two-wire proximity switches (BEROs)
• Suitable as active high and active low input
• Group error display for internal faults (INTF) and external faults (EXTF)
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt
• Programmable input delays
The status LEDs indicate the process status.

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Digital Modules

Terminal Assignment and Block Diagram of the SM 421; DI 16 x 24/60 VUC

Process Module
1 INTF
Front connector jumper
2 EXTF
3
L 4 0 Input
N Adaptation Diagnostics
5 1N
L 6 1 Input
N Adaptation Diagnostics
7 2N
L 8 2 Input
N Adaptation Diagnostics
9 3N
L 10 3 Input
N Adaptation Diagnostics
11 4N
12
13
14
L 15 4 Input
N Adaptation Diagnostics
16 5N
L 17 5 Input
N Adaptation Diagnostics
18 6N
L 19 6 Input
N Adaptation Diagnostics
20 7N

Data register and bus control

L 21 7 Input
N Adaptation Diagnostics
22 8N
23
24
25
26
L 27 0 Input
N Adaptation Diagnostics
28 9N
L 29 1 Input
N Adaptation Diagnostics
30 10 N
L 31 2 Input
N Adaptation Diagnostics
32 11 N
L 33 3 Input
N Adaptation Diagnostics
34 12 N
35
36
37
38
L 39 4 Input
N Adaptation Diagnostics
40 13 N
L 41 5 Input
N Adaptation Diagnostics
42 14 N
L 43 6 Input
N Adaptation Diagnostics
44 15 N
L 45 7 Input
N Adaptation Diagnostics
46 16 N
47
48

Figure 4-6 Terminal Assignment and Block Diagram of the SM 421; DI 16 x 24/60 VUC

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 Digital Modules

Technical Specifications of the SM 421; DI 16 x 24/60 VUC

Dimensions and Weight • Channel error display (F) None

Dimensions W x H x D 25 x 290 x 210 • Diagnostic information can Possible
(in millimeters) be displayed
Weight Approx. 600 g Monitoring for
Data for Specific Module • Wire break I > 0.7 mA
Number of inputs 16 Substitute value can be applied No
Length of cable Sensor Selection Data
• Unshielded Input voltage
input delay • Rated value 24 VUC to 60 VUC
-- 0.5 ms Max. 100 m
• For signal “1” 15 to 72 VDC
-- 3 ms Max. 600 m
--15 VDC to -72 VDC
-- 10 / 20 ms Max. 600 m
15 to 60 VAC
• Shielded line length 1000 m • For signal “0” --6 VDC to +6 VDC
Voltages, Currents, Potentials 0 VAC to 5 VAC
Number of inputs that can be 16 Frequency range 47 DC/AC to 63 Hz
triggered simultaneously
Input current
Isolation • At signal “1” Typ. 4 mA to 10 mA
• Between channels and Yes
Input characteristic curve Similar to IEC 61131--2
backplane bus 1)
• Between the channels Yes
Connection of two-wire BEROs Possible
-- In groups of 1 • Permitted bias current Max. 0.5 mA to 2 mA2)
Permitted potential difference Time, Frequency
• Between the different 75 VDC, 60 VAC
Internal preparation time for
circuits
Insulation tested with
• Only hardware interrupt Max. 450 ms
enable
• Channels against 1500 VAC
• Enable hardware and Max. 2 ms
backplane bus and load
diagnostic interrupts
voltage L+
Input delay
• Channels among one 1500 VAC
another • Parameters can be Yes
assigned
Current consumption
• From the backplane bus Max.150 mA
• Rated value 0.5/3/10/20 ms
Values go into cycle and response times.
Power dissipation of the Typ. 8 W
module Sensor Circuit
Status, Interrupts, Diagnostics Resistance circuit of the sensor
for wire break monitoring
Status display Green LED per
channel • Rated voltage 24 V 18 kΩ
(15 V to 35 V)
Interrupts
• Hardware interrupt Parameters can be
• Rated voltage 48 V 39 kΩ
(30 V to 60 V)
assigned
• Diagnostic Interrupt Parameters can be
• Rated voltage 60 V 56 kΩ
(50 V to 72V)
assigned
Diagnostic functions Parameters can be 1)
assigned IEC 61131--2 does not specify any data for UC
modules. The values have been adapted as much
• Group error display
as possible to IEC 61131--2.
-- For internal fault Red LED (INTF) 2) Minimum closed-circuit current is required for wire
-- For external fault Red LED (EXTF) break monitoring.

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Digital Modules

4.10.1 Assigning Parameters to the SM 421; DI 16 x 24/60 VUC

Parameter Assignment
You will find a description of the general procedure for assigning parameters to
digital modules in Section 4.3.

Parameters of the SM 421; DI 16 x 24/60 VUC

The following table contains an overview of the parameters you can set and their
default settings for the SM 421; DI 16 x 24/60 VUC.

Table 4-12 Parameters of the SM 421; DI 16 x 24/60 VUC

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for interrupt 1 to 4 -- Static Module
Diagnostics
• Wire break Yes/no No Static Channel
Trigger for hardware interrupt
• Rising (positive) edge Yes/no -- Dynamic Channel
• Falling (negative) edge Yes/no
Input delay3) 0.5 ms (DC) 3 ms Static Channel group
3 ms (DC) (DC)
20 ms (DC/AC)
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings.
3) If you assign 0.5 ms , then you should not parameterize a diagnosis because the internal processing time
for diagnostic functions can be > 0.5 ms.

Ensuring a Wire Break Check Is Carried Out

To ensure that a wire break check is carried out, you require an external sensor
circuit using a resistor of 18 to 56 kΩ. The resistor should be connected parallel to
the contact and should be arranged as closely as possible to the sensor.
This additional resistor is not required in the following cases:
• If two-wire BEROs are used
• If you don’t parameterize the “Wire Break” diagnosis

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 Digital Modules

Setting the Input Delay for Channel Groups

You can only set the input delay for each group of channels. In other words, the
setting for channel 0 applies to inputs 0 to 7 and the setting for channel 8 applies to
inputs 8 to 15.

Note
The parameters that are entered for the remaining channels (1 to 7 and 9 to 15)
must be equal to the value 0 or 8, otherwise those channels will be reported as
being incorrectly parameterized.
Any hardware interrupts that have occurred in the meantime will be reported after
acknowledgement.

Optimum Signal Propagation Delays

You can achieve the fastest signal propagation delay with the following settings:
• Both channel groups are parameterized with an input delay of 0.5 ms
• The Diagnostics parameter is disabled
• The Diagnostic Interrupt parameter is disabled

Circuit as for active high or active low input

DI_x
Channel x of the
DI_xN DI 421 16 x 24/60 VUC

U_s

Active high Active low

L+ L+
”1” ”0”
U_s U_s

0V ”0” 0V

U_s
”1”
”1”
-- L+ -- L+
Input threshold

Figure 4-7 Circuit as for Active High or Active Low Input

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Digital Modules

4.11 Digital Input Module SM 421; DI 16 x 120/230 VUC;

(6ES7 421-1FH00-0AA0)

Characteristics
The SM 421; DI 16 x 120/230 VUC is characterized by the following features:
• 16 inputs, isolated
• Rated input voltage 120/230 VUC
• Suitable for switches and two-wire proximity switches

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 Digital Modules

Terminal Assignment and Block Diagram of the SM 421; DI 16 x 120/230 VUC

Process Module
1
2
3
4 0
5
6 1
7
8 2

Data register and bus control

9
10 3
11
12
13 1N
14
15 4
16
17 5
18
19 6
20
21 7
22
23
24 2N
25
26
27 0
28
29 1
30
31 2
32
33 3
34
35
36 3N
37
38
39 4
40
41 5
42
43 6
44
45 7
46
47
48 4N

Figure 4-8 Terminal Assignment and Block Diagram of the SM 421; DI 16 x 120/230 VUC

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Digital Modules

Technical Specifications of the SM 421; DI 16 × 120/230 VUC

Dimensions and Weight Status, Interrupts, Diagnostics

Dimensions W x H x D 25 x 290 x 210 Status display Green LED per
(in millimeters) channel
Weight Approx. 650 g Interrupts None
Data for Specific Module Diagnostic functions None
Number of inputs 16 Data for Selecting a Sensor
Length of cable Input voltage
• Unshielded 600 m • Rated value 120/230 VUC
• Shielded 1000 m • For signal “1” 79 to 264 VAC
Voltages, Currents, Potentials 80 to 264 VDC

Number of inputs that can be 16 at 120 V • For signal “0” 0 VUC to 40 VUC
triggered simultaneously 8 at 240 V • Frequency range 47 to 63 Hz
16 with fan Input current
subassembly • At signal “1” 2 mA to 5 mA
Isolation • At signal “0” 0 to 1 mA
• Between channels and Yes Input delay
backplane bus
• At “0” to “1” 5 to 25 ms
• Between the channels Yes • At “1” to “0” 5 to 25 ms
-- In groups of 4 Input characteristic curve To IEC 61131--2; type
Permitted potential difference 1

• Between Minternal and the 230 VAC Connection of two-wire BEROs Possible
inputs • Permitted bias current Max. 1 mA
• Between the inputs of the 500 VAC
different groups
Insulation resistance 4000 VAC
Current consumption
• From the backplane bus Max. 100 mA
Power dissipation of the Typ. 3.5 W
module

4.12 Digital Input Module SM 421; DI 16 x 120/230 VUC;

(6ES7421-1FH20-0AA0)

Characteristics
The SM 421; DI 16 x 120/230 VUC is characterized by the following features:
• 16 inputs, isolated in groups of 4
• Rated input voltage 120/230 VUC
• Input characteristic curve to IEC 61131--2; type 2
• Suitable for switches and two-wire proximity switches (BEROs)
The status LEDs indicate the process status.

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 Digital Modules

Terminal Assignment and Block Diagram of the SM 421; DI 16 x 120/230 VUC

Process Module
1
2
3
4 0
5
6 1
7
8 2

Data register and bus control

9
10 3
11
12
13 1N
14
15 4
16
17 5
18
19 6
20
21 7
22
23
24 2N
25
26
27 0
28
29 1
30
31 2
32
33 3
34
35
36 3N
37
38
39 4
40
41 5
42
43 6
44
45 7
46
47
48 4N

Figure 4-9 Terminal Assignment and Block Diagram of the SM 421; DI 16 x 120/230 VUC

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Digital Modules

Technical Specifications of the SM 421; DI 16 x 120/230 VUC

Dimensions and Weight Data for Selecting a Sensor

Dimensions W x H x D 25 x 290 x 210 Input voltage
(in millimeters) • Rated value 120/230 VUC
Weight Approx. 650 g • For signal “1” 74 to 264 VAC
Data for Specific Module 80 to 264 VDC
--80 to --264 VDC
Number of inputs 16
• For signal “0” 0 to 40 VAC
Length of cable --40 to +40 VDC
• Unshielded 600 m Frequency range 47 to 63 Hz
• Shielded 1000 m
Input current
Voltages, Currents, Potentials • At signal ”1” (120 V) Typ. 10 mA AC
Power rated voltage of the None Typ. 1.8 mA DC
electronics L+ • At signal ”1” (230 V) Typ. 14 mA AC
Number of inputs 16 Typ. 2 mA DC
that can be triggered
simultaneously
Isolation • At signal “0” 0 to 6 mA AC
• Between channels and Yes 0 to 2 mA DC
backplane bus
Input delay
• Between the channels Yes • At “0” to “1” Max. 20 ms AC
-- In groups of 4 Max. 15 ms DC
Permitted potential difference • At “1” to “0” Max. 30 ms AC
• Between Minternal and the 250 VAC Max. 25 ms DC
inputs Input characteristic curve To IEC 61131--2;
• Between the inputs of the 500 VAC type 2
different groups Connection of two-wire BEROs Possible
Insulation resistance 4000 VAC • Permitted bias current Max. 5 mA AC
Current consumption
• From the backplane bus Max. 80 mA
Power dissipation of the Typ. 12 W
module
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts None
Diagnostic functions None
Substitute value can be applied No

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 Digital Modules

4.13 Digital Input Module SM 421; DI 32 x 120 VUC;

(6ES7421-1EL00-0AA0)

Characteristics
The SM 421; DI 32 x 120 VUC is characterized by the following features:
• 32 inputs, isolated
• Rated input voltage 120 VUC
• Suitable for switches and two-wire proximity switches

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Digital Modules

Terminal Assignment and Block Diagram of the SM 421; DI 32 x 120 VUC

Process Module
1
2
3
4 0
5 1
6 2
7 3
8 4
9 5
10 6
11 7
12
13 1N
14

Data register and bus control

15 0
16 1
17 2
18 3
19 4
20 5
21 6
22 7
23
24 2N
25
26
27 0
28 1
29 2
30 3
31 4
32 5
33 6
34 7
35
36 3N
37
38
39 0
40 1
41 2
42 3
43 4
44 5
45 6
46 7
47
48 4N

Figure 4-10 Terminal Assignment and Block Diagram of the SM 421; DI 32 x 120 VUC

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 Digital Modules

Technical Specifications of the SM 421; DI 32 x 120 VUC

Dimensions and Weight Status, Interrupts, Diagnostics

Dimensions W x H x D (mm) 25 x 290 x 210 Status display Green LED per
channel

Weight Approx. 600 g Interrupts None

Data for Specific Module Diagnostic functions None

Number of inputs 32 Data for Selecting a Sensor

Length of cable Input voltage

• Unshielded 600 m • Rated value 120 VUC
• Shielded 1000 m • For signal “1” 79 to 132 VAC
80 VDC to 132 VDC
Voltages, Currents, Potentials
• For signal “0” 0 to 20 V
Rated load voltage L+ 79 to 132 VAC
80 to 132 VDC • Frequency range 47 to 63 Hz

• Reverse polarity protection Yes Input current

• At signal “1” 2 mA to 5 mA
Number of inputs that can be 32
triggered simultaneously • At signal “0” 0 to 1 mA

Isolation Input delay

• Between channels and Yes

• At “0” to “1” 5 to 25 ms
backplane bus • At “1” to “0” 5 to 25 ms

• Between the channels Yes Input characteristic curve To IEC 61131--2; type
1
-- In groups of 8
Connection of two-wire BEROs Possible
Permitted potential difference
• Permitted bias current Max.1 mA
• Between Minternal and the 120 VAC
inputs
• Between the inputs of the 250 VAC
different groups
Insulation tested with 1500 VAC
Current consumption
• From the backplane bus Max. 200 mA
Power dissipation of the Typ. 6.5 W
module

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Digital Modules

4.14 Digital Output Module SM 422;

DO 16 x 24 VDC/2 A; (6ES7422-1BH11-0AA0)

Characteristics
The digital output module SM 422; DO 16 x 24 VDC/2 A has the following features.
• 16 outputs, isolated in two groups of 8
• 2 A output current
• 24 VDC rated load voltage
The status LEDs also indicate the system status even when the front connector is
not inserted.

A Note about Commissioning

The following technical feature applies to the digital output module SM 422;
DO 16 x 24 VDC/2 A with the order number 6ES7422-1BH11-0AA0 but not to the
digital output module SM 422; DO 16 x 24 VDC/2 A with the order number
6ES7422-1BH10-0AA0:
To commission the module, it is no longer necessary to apply load voltage (1L+
and 3L+, for example,) to each group of 8 outputs. The module is fully operative
even if only one group is supplied with L+.

Note
It is no longer possible to switch off all the outputs by disconnecting a single L+
supply as might have been the case with the previous module
(6ES7422-1BH10-0AA0)L+.

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 Digital Modules

Terminal Assignment and Block Diagram of the SM 422; DO 16 × 24 VDC/2 A

Process Module
1
2
3 1L+
4 0
5
1st supply group 6 1
7
8 2
2nd supply group 9

Data register and bus control

3
11
12
13 2L+
14 2L+
15 4
16
3rd supply group 17 5
18
19 6
4th supply group 20
21 7
22
23 1M
24
25 3L+
26 3L+
27 0
28
5th supply group 29 1
30
31 2
6th supply group 32
33 3
34
35
36
37 4L+
38 4L+
39 4
7th supply group 40
41 5
LED control

42
43 6
8th supply group 44
45 7
46
47 2M
48 2M

Figure 4-11 Terminal Assignment and Block Diagram of the SM 422; DO 16 × 24 VDC/2 A

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Digital Modules

Technical Specifications of the SM 422; DO 16 x 24 VDC/2 A

Dimensions and Weight Data for Selecting an Actuator

Dimensions W x H x D 25 x 290 x 210 Output voltage
(in millimeters) • At signal “1” Min. L+ (-0,5 V)
Weight Approx. 600 g Output current
Data for Specific Module • At signal “1”
Number of outputs 16 Rated value 2A
Length of cable Permitted range 5 mA to 2.4 A
• Unshielded 600 m
• At signal “0” (leakage Max. 0.5 mA
• Shielded 1000 m current)
Voltages, Currents, Potentials Output delay (for resistive load)
Power rated voltage of the 24 VDC • From “ 0” to “1” Max. 1 ms
electronics L+
• At “1” to “0” Max. 1 ms
Rated load voltage L+ 24 VDC
Load resistor range 24 Ω to 4 kΩ
Aggregate current of
Lamp load Max. 10 W
the outputs (two outputs
per supply group 1)) Parallel connection of 2
outputs
Up to 40 _C Max. 3 A
Up to 60 _C Max. 2 A • For redundant triggering of Possible (only outputs
a load of the same group)
Isolation
• Between channels and Yes
• To increase performance Not possible
backplane bus Triggering a digital input Possible

• Between the channels Yes Switch rate

In groups of 8 • For resistive load 100 Hz

Permitted potential difference

• For inductive load to IEC 0.2 Hz at 1 A
60947-5--1, DC 13 0.1 Hz at 2A
• Between the different 75 VDC / 60 VAC
circuits • For lamp load Max. 10 Hz

Insulation tested with Limit (internal) of the inductive Max. -30 V

circuit interruption voltage up to
• Channels against 500 VDC
backplane bus and load Short-circuit protection Electronically cyclic2)
voltage L+ of output1)

• Between the outputs of the 500 VDC

• Threshold on 2.8 A to 6 A
different groups
1) A supply group always consists of two adjacent
Current consumption channels starting with channel 0. Channels 0 and 1, 2
• From the backplane bus Max. 160 mA and 3 and so on up to 14 and 15 therefore form one
• Power supply and load Max. 30 mA supply group.
voltage L+ (no load) 2) Following a short circuit, reclosing under a full load is
not guaranteed. To prevent this, you can do one of the
Power dissipation of the Typ. 5 W following things:
module
• Change the signal at the output
Status, Interrupts, Diagnostics
• Interrupt the load voltage of the module
Status display Green LED per • Briefly disconnect the load from the output
channel
Interrupts None
Diagnostic functions None

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4.15 Digital Output Module SM 422;

DO 16 x 20-125 VDC/1.5 A; (6ES7422-5EH10-0AB0)

Characteristics
The SM 422; DO 16 x 20-125 VDC/1.5 A has the following features:
• 16 outputs, each channel is fused; reverse polarity protection and isolated in
groups of 8
• 1.5 A output current
• Rated load voltage 20 to 125 VDC
• Group error display for internal faults (INTF) and external faults (EXTF)
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable substitute value output

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Digital Modules

Terminal Assignment Diagram of the SM 422; DO 16 x 20-125 VDC/1.5 A

Process Module
1
2
Byte 0 3
4 0
5
6 1
7
8 2

Data register and bus control

9
10 3
11
12
--+ 13 L1+
14 L1+
15 4
16
17 5
18
19 6
20
21 7
22
23 M1
24
25
Byte 1 26
27 0
28
29 1
30
31 2
32
33 3
34
35
36
--+ 37 L2+
38 L2+
39 4
40
41 5
LED control

42
43 6
44
45 7
46
47 M2
48 M2

Figure 4-12 Terminal Assignment Diagram of the SM 422; DO 16 x 20-125 VDC/1.5 A

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Technical Specifications of the SM 422; DO 16 x 20-125 VDC/1.5 A

Dimensions and Weight Data for Selecting an Actuator

Dimensions W x H x D 25 x 290 x 210 Output voltage
(in millimeters) • At signal “1” Min. L+ (--1,0 V)
Weight Approx. 800 g Output current
Data for Specific Module • At signal “1”
Number of outputs 16 Rated value 1.5 A
Length of cable Permitted range 10 mA to 1.5 A
• Unshielded Max. 600 m Permitted surge current Max. 3 A
• Shielded Max. 1000 m (for 10 ms)
Voltages, Currents, Potentials • At signal “0” (leakage Max. 0.5 mA
Rated load voltage L1 20 VDC to 138 VDC current)
• Reverse polarity protection Yes, with fuse Output delay (for resistive load)
Total current of the outputs 1) • From “ 0” to “1” Max. 2 ms
Up to 40 _C With fan • At “1” to “0” Max. 13 ms
Up to 60 _C sub Parallel connection of 2
assembly outputs
Max. 16 A 21 A • For redundant triggering of Possible (only outputs
Max. 8 A 14 A a load of the same group)
Isolation • To increase performance Possible (only outputs
• Between channels and Yes of the same group)
backplane bus Triggering a digital input Possible

• Between the channels Yes Switch rate

In groups of 8
• For resistive load Max. 10 Hz

Permitted potential difference • For inductive load Max. 0.5 Hz

to IEC 60947-5-1, DC 13
• Between the outputs of the 250 VAC
different groups Short-circuit protection Electronically
of output protected2)
Insulation tested with 1500 VAC
• Threshold on Typ. 04 A to 5 A
Current consumption
Replacement fuses Fuse, 8 A/250 V, quick
• From the backplane bus Max. 700 mA blow
• From load voltage L + Max. 2 mA
(without load)
Power dissipation of the Typ. 10 W 1) To achieve maximum performance capability,
module
distribute the high-current load between the two
Status, Interrupts, Diagnostics groups.
Status display Green LED per 2) To reset a deactivated output,
channel first set the output signal to 0 and then to 1.
Interrupts If output signal 1 is written to a deactivated
• Diagnostic Interrupt Parameters can be output and the short circuit remains, additional
assigned interrupts are generated (provided the diagnostic
Diagnostic functions Parameters can be interrupt parameter was set).
assigned
• Group error display
-- For internal fault Red LED (INTF)
-- For external fault Red LED (EXTF)
• Diagnostic information Yes
readable
Substitute value can be applied Yes, programmable

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Digital Modules

Note
If the power supply is switched on by means of a mechanical contact, a voltage
pulse may occur at the outputs. The transient pulse lasts a maximum of 0.5 ms.

Changing Fuses

Warning
! This can result in injury.
If you change a fuse without removing the front connector of the module, you could
be injured by an electric shock.
Consequently, always remove the front connector before you change the fuse.

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4.15.1 Assigning Parameters to the SM 422; DO 16 x 20-125 VDC/1.5 A

Parameter Assignment
You will find a description of the general procedure for assigning parameters to
digital modules in Section 4.3.

Parameters of the SM 421; DO 16 x 20-125 VDC/1.5 A

You will find an overview of the parameters you can set and their default settings
for the SM 422; DO 16 x 20-125 VDC/1.5 A in the following table.

Table 4-13 Parameters of the SM 422; DO 1 x 20-125 VDC/1.5 A

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Destination CPU for 1 to 4
--
Static Module
interrupt
Reaction to CPU-STOP Substitute a value (SV) SV Dynamic Module
Keep last value (KLV)
Diagnostics
• No load voltage L+ Yes/no
No Channel
• Short circuit to M Static group
No
Yes/no
Channel
Enable substitute value Yes/no No Dynamic Channel
“1”
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings.

Assigning the “No Load Voltage L+” Diagnosis to Channel Groups

You can only set the “No Load Voltage L+” diagnosis separately for each channel
group. In other words, the setting for channel 0 applies to inputs 0 to 7, and the
setting for channel 8 applies to inputs 8 to 15.

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Digital Modules

4.16 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A;

(6ES7422-1BL00-0AA0)

Characteristics
The SM 422; DO 32 x 24 VDC/0.5 A has the following features:
• 32 outputs, isolated in a group of 32
• Power is supplied to 8 channels in groups.
• A supply group always consists of eight adjacent channels starting with channel
0. Channels 0 to 7, 8 to 15, 16 to 23 and 24 to 32 therefore form one supply
group
• Each of these supply groups can be switched off separately by isolating L+,
however you have to take note of the common ground connection.
• 0.5 A output current
• 24 VDC rated load voltage
The status LEDs also indicate the system status even when the front connector is
not inserted.

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Terminal Assignment and Block Diagram of the SM 422; DO 32 x 24 VDC/0.5 A

Process Module
1
1L+
2
3 1L+
4 0
5 1
6 2
7 3
8 4
9 5
6

Data register and bus control

11 7
12
2L+ 13 2L+
14 2L+
15 0
16 1
17 2
18 3
19 4
20 5
21 6
22 7
23
24
3L+ 25 3L+
26 3L+
27 0
28 1
29 2
30 3
31 4
32 5
33 6
34 7
35
36
4L+ 37 4L+
38 4L+
39 0
LED control

40 1
41 2
42 3
43 4
44 5
45 6
46 7
47
48 M
L+ M

Figure 4-13 Terminal Assignment and Block Diagram of the SM 422; DO 32 x 24 VDC/0.5 A

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Digital Modules

Technical Specifications of the SM 422; DO 32 x 24 VDC/0.5 A

Dimensions and Weight Status, Interrupts, Diagnostics

Dimensions W x H x D 25 x 290 x 210 Status display Green LED per channel
(in millimeters)
Interrupts None
Weight Approx. 600 g
Diagnostic functions None
Data for Specific Module
Data for Selecting an Actuator
Number of outputs 32
Output voltage
Length of cable • At signal “1” Min. L+ (-0,3 V)
• Unshielded 600 m
Output current
• Shielded 1000 m
• At signal “1”
Voltages, Currents, Potentials
Rated value 0.5 A
Power rated voltage of the 24 VDC Permitted range 5 mA to 0.6 A
electronics L+
• At signal “0” (leakage Max. 0.3 mA
Rated load voltage L+ 24 VDC current)
Aggregate current of Output delay (for resistive
the outputs (per supply load)
group1) of 8 outputs)
• From “ 0” to “1” Max. 1 ms
Up to 40 _C Max. 4 A
Up to 60 _C Max. 2 A • At “1” to “0” Max. 1 ms

Isolation Load resistor range 48 Ω to 4 kΩ

• Between channels and Yes Lamp load Max. 5 W

backplane bus
Parallel connection of 2
• Between the channels No outputs

Permitted potential difference • For redundant triggering of Possible (only outputs

a load of the same group)
• Between the different 75 VDC / 60 VAC
circuits • To increase performance Possible (only outputs
of the same group)
Insulation tested with
Triggering a digital input Possible
• Channels against 500 VDC
backplane bus and load Switch rate
voltage L+
• For resistive load Max. 100 Hz
• Load voltage L+ against 500 VDC
• For inductive load Max. 2 Hz at 0.3 A
backplane bus
to IEC 60947-5-1, DC 13 Max. 0.5 Hz at 0.5 A
Current consumption
• For lamp load Max. 10 Hz
• From the backplane bus Max. 200 mA
Limit (internal) of the inductive Typ. -- 27 V
• Power supply and load Max. 30 mA
circuit interruption voltage up
voltage L+ (no load)
to
Power dissipation of the Typ. 4 W
Short-circuit protection of the Electronically cyclic
module
output
• Threshold on Typ. 0.7 A to 1.5 A

1) A supply group always consists of eight adjacent

channels starting with channel 0. Channels 0 to 7, 8 to
15, 16 to 23 and 24 to 32 therefore form one supply
group.

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4.17 Digital Output Module SM 422; DO 32 x 24 VDC/0.5 A;

(6ES7422-7BL00-0AB0)

Characteristics
The digital output module SM 422; DO 32 x 24 VDC/0.5 A has the following
features:
• 32 outputs, fused and isolated in groups of 8
• 0.5 A output current
• 24 VDC rated load voltage
• Group error display for internal faults (INTF) and external faults (EXTF)
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable substitute value output
The status LEDs also indicate the system status even when the front connector is
not inserted.

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Digital Modules

Terminal Assignment and Block Diagram of the SM 422; DO 32 x 24 VDC/0.5 A

Module Process

1L+ -- monitoring 1
1L+ INTF
2
Monitoring of internal voltage EXTF
3 1L+
1L+ +
Control Control 4
0
Channel 5
status 1
LED 6
Diagnostics 2
7
3
8
Output status 4
9
5
10
6
11
7
1M 1M 12 1M

2L+ 13
2L+ 2L+ 14 2L+
+
0 15

1 16

2 17

3 18

4 19
5 20
6 21
Backplane bus interface

7 22
2M 23
2M
2M 24
3L+ 25
3L+ 3L+ 26 3L+
+
0 27
1 28
2 29
3 30
4 31
5 32
6 33
7 34
3M
3M 35
3M 36
4L+ 37
4L+ 4L+
4L+ 38
+
0 39
1 40
2 41
3 42
4 43
5 44
6 45
7 46
4M 47
4M 4M 48
L+

24 V

Figure 4-14 Terminal Assignment and Block Diagram of the SM 422; DO 32 x 24 VDC/0.5 A

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Technical Specifications of the SM 422; DO 32 x 24 VDC/0.5 A

Dimensions and Weight • Group error display

Dimensions W x H x D 25 x 290 x 210 -- For internal fault Red LED (INTF)
(in millimeters)
-- For external fault Red LED (EXTF)
Weight Approx. 600 g
• Diagnostic information Yes
Data for Specific Module readable
Number of outputs 32 Monitoring for
Length of cable • Short circuit > 1 A (typ.)
• Unshielded 600 m
• Wire break < 0.15 mA
• Shielded 1000 m
Substitute value can be applied Yes
Voltages, Currents, Potentials
Data for Selecting an Actuator
Power rated voltage of the 24 VDC
electronics L+ Output voltage

Rated load voltage L+ 24 VDC

• At signal “1” Min. L + (-- 0.8 V)
Output current
Total current of the outputs (per
group) • At signal “1”
Up to 40 _C Max. 4 A Rated value 0.5 A
Up to 60 _C Max. 2 A Permitted range 5 mA to 0.6 A

Isolation • At signal “0” (leakage Max. 0.5 mA

current)
• Between channels and Yes
backplane bus Load resistor range 48 Ω to 4 kΩ
• Between the channels Yes Parallel connection of 2
In groups of 8 outputs

Permitted potential difference • For redundant triggering of Possible (only outputs

a load of the same group)
• Between the different 75 VDC, 60 VAC
circuits • To increase performance Possible (only outputs
of the same group)
Insulation tested with
Triggering a digital input Possible
• Channels against 500 VDC
backplane bus and load Switch rate
voltage L+ • For resistive load Max. 100 Hz
• Between the outputs of the 500 VDC • For inductive load Max. 2 Hz
different groups to IEC 60947-5-1, DC 13
Current consumption • For lamp load Max. 2 Hz
• From the backplane bus Max. 200 mA
Limit (internal) of the inductive Typ. L + (-- 45 V)
• Power supply and load Max. 120 mA circuit interruption voltage up to
voltage L+ (no load)
Short-circuit protection of the Electronically cyclic
Power dissipation of the Typ. 8 W output
module
• Threshold on Typ. 0.75 A to 1.5 A
Status, Interrupts, Diagnostics
Status display Green LED per
channel
Interrupts
• Diagnostic Interrupt Parameters can be
• Hardware interrupt assigned
Parameters can be
assigned
Diagnostic functions
• Monitoring of the load Yes
voltage

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Digital Modules

Time, Frequency
Internal preparation time
between backplane bus and
input of the output driver1)
Up to hardware release 03
• independent of enable max. 100 ms
diagnostics/diagnostic
interrupt/ substitute value
Up to hardware release 04
• without enable diagnostics/ max. 60 ms
diagnostic interrupt/
substitute value max. 100 ms
• with enable diagnostics/
diagnostic interrupt/
substitute value
1) The switching time of the output driver is added to the
overall runtime on the module
(< 100 ms for resistive load)

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4.17.1 Assigning Parameters to the SM 422; DO 32 x 24 VDC/0.5 A

Parameter Assignment
You will find a description of the general procedure for assigning parameters to
digital modules in Section 4.3.

Parameters of the SM 422; DO 32 x 24 VDC/0.5 A

You will find an overview of the parameters that you can set and their default
settings for the SM 422; DO 32 x 24 VDC/0.5 A in the table below.

Table 4-14 Parameters of the SM 422; DO 3 x 24 VDC/0.5 A (6ES7422-7BL00-0AB0)

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Destination CPU for 1 to 4
--
Static Module
interrupt
Reaction to CPU-STOP Substitute a value (SV) SV Dynamic Module
Keep last value (KLV)
Diagnostics
• Wire break Yes/no
No Channel
• No load voltage Yes/no
no Channel
L+/sensor supply Static group
• Short circuit to M Yes/no
No
• Short circuit to L+ Yes/no
No Channel
Channel
Substitute “1” Yes/no No Dynamic Channel
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings.

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Digital Modules

4.17.2 Behavior of the SM 422; DO 32 x 24 VDC/0.5 A

Effect of Operating Mode and Supply Voltage on the Output Values

The output values of the SM 422; DO 32 x 24 VDC/0.5 A depend on the operating
mode of the CPU and on the supply voltage of the module.

Table 4-15 Dependence of the Output Values on the Operating Mode of the CPU and on
the Supply Voltage L+ of the SM 422; DO 32 x 24 VDC/0.5 A

CPU Operating Mode Power Supply L+ Output Value of Digital

to Digital Module Module
POWER ON RUN L+ exists CPU value
L+ missing 0 signal
STOP L+ exists Substitute value/last value (0
signal preset)
L+ missing 0 signal
POWER -- L+ exists 0 signal
OFF L+ missing 0 signal

Behavior in the Event of Failure of the Supply Voltage

The failure of the supply voltage of the SM 422; DO 32 x 24VDC/0.5 A is always
indicated by the EXTF LED on the module. Furthermore, this information is made
available on the module (entry in diagnosis).
Triggering of the diagnostic interrupt depends on the parameter assignment (see
Section 4.17.1).

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 Digital Modules

4.18 Digital Output Module SM 422; DO 8 x 120/230 VAC/5 A;

(6ES7422-1FF00-0AA0)

Characteristics
The SM 422; DO 8 x 120/230 VAC/5 A has the following features:
• 8 outputs, isolated in groups of 1
• Output current 5 A
• 120/230 VAC rated load voltage
The status LEDs also indicate the system status even when the front connector is
not inserted.

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Digital Modules

Terminal Assignment and Block Diagram of the SM 422;

DO 8 x 120/230 VAC/5 A

Process Module
1 INFT
2 EXTF
3 t
4 0
5 1L
6 F100
7 1N
8
9
10 1
11 2L
12 F200
13 2N
14
15 2
16 3L

Data register and bus control

17 F300
18 3N
19
20
21 3
22 4L
23 F400
24 4N
25
26
27 4
28 5L
29 F500
30 5N
31
32
33 5
34 6L
35 F600
36 6N
37
38
39 6
40 7L
41 F700
42 7N
43
44
LED control

45 7
46 8L
47 F800
48 8N

Figure 4-15 Terminal Assignment and Block Diagram of the SM 422; DO 8 x 120/230 VAC/5 A

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Technical Specifications of the SM 422; DO 8 x 120/230 VAC/5 A

Dimensions and Weight Data for Selecting an Actuator

Dimensions W x H x D 25 x 290 x 210 Output voltage
(in millimeters) • At signal “1” At maximum current
Weight Approx. 800 g min. L1 (--1.5 Vrms)
At maximum current
Data for Specific Module
min. L1 (--10.7 Vrms)
Number of outputs 8
Output current
Length of cable
• At signal “1”
• Unshielded 600 m
Rated value 5A
• Shielded 1000 m
Permitted range 10 mA to 5 A
Voltages, Currents, Potentials
Permitted surge current Max. 50 A per cycle
Rated load voltage L1 79 to 264 VAC
(per group)
Permitted frequency range 47 to 63 Hz
• At signal “0” (leakage Max. 3.5 mA
Total current of the outputs current)
With fan Output delay (for resistive load)
sub-
assembly • From “ 0” to “1” Not more than 1 AC
scan cycle
Up to 40 _C Max. 16 A 24 A
Up to 60 _C Max. 8 A 20 A • At “1” to “0” Not more than 1 AC
scan cycle
Isolation
Minimum load current 10 mA
• Between channels and Yes
backplane bus Zero cross inhibit voltage Max. 55 V
Size of the motor starter Max. size 5 to NEMA
• Between the channels Yes
Lamp load Max. 100 W
In groups of 1
Parallel connection of 2
Permitted potential difference outputs
• Between the outputs of the 500 VAC • For redundant triggering of Possible (only outputs
different groups a load connected to the same
Insulation resistance 4000 VAC load)

Current consumption Triggering a digital input Possible

• From the backplane bus Max. 250 mA Switch rate
• From load voltage L + Max. 1.5 mA • For resistive load Max. 10 Hz
(without load)
• For inductive load Max. 0.5 Hz
Power dissipation of the Typ. 16 W to IEC 60947-5-1, DC 13
module
• For lamp load 1 Hz
Status, Interrupts, Diagnostics
Short-circuit protection of the Fuse, 8 A, 250 V (per
Status display Green LED per output output)
channel
• Min. current required for Min. 100 A
Interrupts None fuse to blow
Diagnostic functions Parameters cannot be • Max. response time Max. 100 ms
assigned
Replacement fuses Fuse, 8 A, quick-acting
• Group error display • Wickmann 194-1800-0
-- For internal fault Red LED (INTF) • Schurter SP001.1013
failed fuse • Littelfuse 217.008
-- For external fault Red LED (EXTF)
failed load voltage

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Digital Modules

Changing Fuses

Warning
! This can result in injury.
If you change a fuse without removing the front connector of the module, you could
be injured by an electric shock.
Consequently, always remove the front connector before you change the fuse.

4.19 Digital Output Module SM 422; DO 16 x 120/230 VAC/2 A;

(6ES7422-1FH00-0AA0)

Characteristics
The SM 422; DO 1 x 120/230 VAC/2 A has the following features:
• 16 outputs, isolated in groups of 4
• 2 A output current
• 120/230 VAC rated load voltage
The status LEDs also indicate the system status even when the front connector is
not inserted.

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Terminal Assignment and Block Diagram of the SM 422; DO 16 x 120/230 VAC/2 A

Process Module

16 digital outputs (4 chassis grounds)

1 INTF
2 EXTF
Byte 0 3
4 0
5
6 1
7
8 2
9
10 3

Data register and bus control

11 1L
12 F1
13 1N
14
15 4
16
17 5
18
19 6
20
21 7
22 2L
23 F2
24 2N
25
Byte 1 26
27 0
28
29 1
30
31 2
32
33 3
34 3L
35 F3
36 3N
37
38
LED control

39 4
40
41 5
42
43 6
44
45 7
46 4L
47 F4
48 4N

Figure 4-16 Terminal Assignment and Block Diagram of the SM 422; DO 16 x 120/230 VAC/2 A

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Digital Modules

Technical Specifications of the SM 422; DO 16 x 120/230 VAC/2 A

Dimensions and Weight Data for Selecting an Actuator

DimensionsW x H x D 25 x 290 x 210 Output voltage
(in millimeters) • At signal “1” At maximum current
Weight Approx. 800 g min. L1 (--1.3 Vrms)

Data for Specific Module At minimum current

min. L1 (--18.1 Vrms)
Number of outputs 16
Output current
Length of cable
• At signal “1”
• Unshielded 600 m
Rated value 2A
• Shielded 1000 m
Permitted range 10 mA to 2 A
Voltages, Currents, Potentials
Rated load voltage L1 79 to 264 VAC Permitted surge current Max. 50 A per cycle
(per group)
Permitted frequency range 47 to 63 Hz
• At signal “0” (leakage Max. 2.6 mA
Total current of the outputs (per current)
group)
Output delay (for resistive load)
With fan
sub-- • From “ 0” to “1” Max. 1 ms
assembly • At “1” to “0” Not more than 1 AC
Up to 40 _C Max. 4 A 6A scan cycle
Up to 60 _C Max. 2 A 5A Minimum load current 10 mA
Isolation Zero cross inhibit voltage Non-zero cross outputs
• Between channels and Yes Size of the motor starter Max. size 5 to NEMA
backplane bus Lamp load Max. 50 W
• Between the channels Yes Parallel connection of 2
In groups of 4 outputs

Permitted potential difference • For redundant triggering of Possible (only outputs

a load connected to the same
• Between the outputs of the 500 VAC load)
different groups
Triggering a digital input Possible
Insulation resistance 4000 VAC
Switch rate
Current consumption
• For resistive load Max. 10 Hz
• From the backplane bus Max. 400 mA
• From load voltage L + 1.5 mA
• For inductive load, to Max. 0.5 Hz
IEC 60947-5-1, AC 15
(without load)
Power dissipation of the Typ. 16 W
• For lamp load 1 Hz
module Short-circuit protection of the Fuse, 8 A, 250 V (per
output group)
Status, Interrupts, Diagnostics
• Min. current required for Min. 100 A
Status display Green LED per fuse to blow
channel
• Max. response time Max. 100 ms
Interrupts None
Replacement fuses Fuse, 8 A, quick-acting
Diagnostic functions Parameters cannot be
assigned
• Wickmann 194-1800-0
• Schurter SP001.1013
• Group error display
• Littelfuse 217.008
-- For internal fault Red LED (INTF)
failed fuse
-- For external fault Red LED (EXTF)
failed load voltage

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Changing Fuses

Warning
! This can result in injury.
If you change a fuse without removing the front connector of the module, you could
be injured by an electric shock.
Consequently, always remove the front connector before you change the fuse.

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Digital Modules

4.20 Digital Output Module SM 422; DO 16 x 20-120 VAC/2 A;

(6ES7422-5EH00-0AB0)

Characteristics
The SM 422; DO 16 x 20-120 VAC/2 A has the following features:
• 16 outputs, isolated in groups of 1
• 2 A output current
• Rated load voltage 20 VAC to 120 VAC
• Group error display for internal faults (INTF) and external faults (EXTF)
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable substitute value output

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Terminal Assignment Diagram of the SM 422; DO 16 x 20-120 VAC/2 A

Process Module
1 INTF
2 EXTF
Byte 0 3
t
4 0
5 1L1
6 1
7 2L1
8 2
9 3L1
10 3
11 4L1
12
13
14
15 4
16 5L1

Data register and bus control

17 5
18 6L1
19 6
20 7L1
21 7
22 8L1
23
24
25
Byte 1 26
27 0
28 9L1
29 1
30 10L1
31 2
32 11L1
33 3
34 12L1
35
36
37
38
39 4
40 13L1
41 5
42 14L1
LED control

43 6
44 15L1
45 7
46 16L1
47
48

Figure 4-17 Terminal Assignment Diagram of the SM 422; DO 16 x 20-120 VAC/2 A

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Technical Specifications of the SM 422; DO 16 x 20-120 VAC/2 A

Dimensions and Weight • Diagnostic Possible

information readable
Dimensions W x H x D 25 x 290 x 210
(in millimeters) Substitute value can be applied Yes, programmable
Weight Approx. 800 g Data for Selecting an Actuator
Data for Specific Module Output voltage
Number of outputs 16 • At signal “1” L1 (--1.5 Vrms)

Length of cable Output current

• Unshielded Max. 600 m • At signal “1”
• Shielded Max. 1000 m Rated value 2A
Voltages, Currents, Potentials Permitted range 100 mA to 2 A

Rated load voltage L+ 20 to 132 VAC Permitted surge current Max. 20 A/2 cycles
(per group)
• Permitted frequency range 47 Hz to 63 Hz
• At signal “0” (leakage Max. 2.5 mA at 30 V
Total current of the outputs current) Max. 4.5 mA at 132 V
With fan
sub-- Output delay (for resistive load)
Up to 40 _C
Up to 60 _C
assembly • From “ 0” to “1” 1 ms
Max. 16 A 24 A • At “1” to “0” 1 AC cycle
Max. 7 A 16 A
Zero cross inhibit voltage Non-zero cross outputs
Isolation
Size of the motor starter Max. size 5 to NEMA
• Between channels and Yes
backplane bus Lamp load Max. 50 W

• Between the channels Yes Parallel connection of 2

outputs
In groups of 1
• For redundant triggering of Possible (only outputs
Permitted potential difference a load of the same group)
• Between Minternal and the 120 VAC
outputs • To increase performance Not possible

• Between the outputs of the 250 VAC Triggering a digital input Possible
different groups Switch rate
Insulation tested with 1500 VDC • For resistive load Max. 10 Hz
Current consumption • For inductive load Max. 0.5 Hz
• From the backplane bus Max. 600 mA to IEC 60947-5-1, DC 13
• From load voltage L + Max. 0 mA • For lamp load 1 Hz
(without load)
Short-circuit protection of the Fuse 8A/125 V 2AG
Power dissipation of the Typ. 20 W output (per output)
module • Min. current required for
Status, Interrupts, Diagnostics fuse to blow Min. 40 A

Status display Green LED per • Max. response time Typ. 33 ms

channel Replacement fuses Fuse, 8 A, quick-acting
Interrupts • Littelfuse 225.008
• Diagnostic Interrupt Parameters can be
assigned
Diagnostic functions Parameters can be
assigned
• Group error display
-- For internal fault Red LED (INTF)
-- For external fault Red LED (EXTF)

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 Digital Modules

Changing Fuses

Warning
! This can result in injury.
If you change a fuse without removing the front connector of the module, you could
be injured by an electric shock.
Consequently, always remove the front connector before you change the fuse.

4.20.1 Assigning Parameters to the SM 422; DO 16 x 20-120 VAC/2 A

Parameter Assignment
You will find a description of the general procedure for assigning parameters to
digital modules in Section 4.3.

Parameters of the SM 422; DO 16 x 20-120 VAC/2 A

You will find an overview of the parameters you can set and their default settings
for the SM 422; DO 16 x 20-120 VAC/2 A in the following table.

Table 4-16 Parameters of the SM 422; DO 16 x 20-120 VAC/2 A

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Destination CPU for 1 to 4
--
Static Module
interrupt
Reaction to CPU STOP Substitute a value (SV) SV Dynamic Module
Keep last value (KLV)
Diagnostics
• Fuse blown Yes/no No Static Channel
Enable substitute value Yes/no No Dynamic Channel
“1”
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the digital modules with the default settings.

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Digital Modules

4.21 Relay Output Module SM 422; DO 16 x

30/230 VUC/Rel. 5 A; (6ES7422-1HH00-0AA0)

Characteristics
The SM 422; DO 16 x 30/230 VUC/Rel. 5 A has the following features:
• 16 outputs, isolated in 8 groups of 2
• Output current 5 A
• Rated load voltage 230 VAC/ 125 VDC
The status LEDs also indicate the system status even when the front connector is
not inserted.

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Terminal Assignment and Block Diagram of the SM 422;

DO 16 x 30/230 VUC/Rel. 5 A

Process Module

1
2
3
4 0
5 1
6 1L
7
8
9 2
10 3

Data register and bus control

11 2L
12
13
14
15 4
16 5
17 3L
18
19
20 6
21 7
22 4L
23
24
25
26
27 0
28 1
29 5L
30
31
32 2
33 3
34 6L
35
36
37
38
LED control

39 4
40 5
41 7L
42
43
44 6
45 7
46 8L
47
48

Figure 4-18 Terminal Assignment and Block Diagram of the SM 422; DO 16 x 30/230 VUC/Rel. 5 A

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Digital Modules

Technical Specifications of the SM 422; DO 16 x 30/230 VUC/Rel. 5 A

Dimensions and Weight Data for Selecting an Actuator

Dimensions W x H x D 25 x 290 x 210 Continuous thermal current Max. 5 A
(in millimeters)
Minimum load current 10 mA
Weight Approx. 700 g
External fuse for relay outputs Fuse, 6 A, quick-acting
Data for Specific Module
Switching capacity and lifetime of the contacts
Number of outputs 16
• For resistive load
Length of cable
Voltage Current No. of
• Unshielded Max. 600 m switching
• Shielded Max. 1000 m cyc. (typ.)
Voltages, Currents, Potentials 30 VDC 5.0 A 0.18 mill
60 VDC 1.2 A 0.1 mill
Total current of the outputs 125 VDC 0.2 A 0.1 mill
(per group) 230 VAC 5.0 A 0.18 mill
With fan • For inductive load to IEC 60947-5-1
Up to 40 oC sub-- 13 DC/15 AC
assembly
Up to 60 oC Voltage Current No. of
Max. 10 A 10 A
switching
Max. 5 A 10 A cyc. (typ.)
Isolation 30 VDC 5.0 A 0.1 mill
• Between channels and Yes (τ=7 ms max.)
backplane bus
230 VAC 5.0 A 0.1 mill
• Between the channels Yes
(pf=0.4)
In groups of 2
Size of the motor starter Max. size 5 to NEMA
Permitted potential
differences: Lamp load Max. 60 W

• Between the outputs of 500 VAC Contact protection (internal) None

the different groups Connecting two outputs in parallel
Insulation resistance 4000 VAC • For redundant actuation of Possible (only outputs
Current consumption a load with identical load
voltage)
• From the backplane bus Max. 1 A
Power dissipation of the Typ. 4.5 W
• To increase performance Not possible
module Triggering a digital input Possible
Status, Interrupts, Diagnostics Switch rate
Status display Green LED per channel • Mechanical Max. 20 Hz
Interrupt None • For resistive load Max. 10 Hz
Diagnostic functions None • For inductive load to 1 Hz
Relay Features IEC 60947-5-1,
13 DC/15 AC
Relay response times
• For lamp load 1 Hz
• Power up Max. 10 ms
Typ. 5.5 ms
• Power down Max. 5 ms
Typ. 3 ms
Debouncing time Typ. 0.5 ms

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Note
Use a suppressor circuit in environments with high humidity and where sparks
might occur at the relay contacts. This will increase the life of the relay contacts.
To do this, connect an RC element or a varistor parallel to the relay contacts or to
the load. The dimensions depend on the size of the load (see Chapter 4 of the
installation manual).

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Analog Modules 5
Structure of the Chapter
The present chapter is broken down into the following subjects:
1. Overview containing the modules that are available here and a description
2. Information that is generally available -- in other words, affects all analog
modules (such as parameter assignment and diagnostics)
3. Information that refers to specific modules (for example, characteristics,
diagram of connections and block diagram, technical specifications and special
characteristics of the module):
a) For analog input modules
b) For analog output modules

STEP 7 Blocks for Analog Functions

You can use blocks FC 105 and FC 106 to read and output analog values in
STEP 7. You will find the FCs in the standard library of STEP 7 in the subdirectory
called “S5-S7 Converting Blocks” (for a description refer to the STEP 7 online help
system for the FCs).

Additional Information
Appendix A describes the structure of the parameter records (data records 0 and 1)
in the system data. You must be familiar with this structure if you want to modify the
parameters of the modules in the STEP 7 user program.
Appendix B describes the structure of the diagnostic data (data records 0, 1) in the
system data. You must be familiar with this structure if you want to evaluate the
diagnostic data of the modules in the STEP 7 user program.

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Analog Modules

Chapter Overview

Section Description Page

5.1 Module Overview 5-3
5.2 Sequence of Steps from Choosing to Commissioning the Analog 5-5
Modules
5.3 Analog Value Representation 5-6
5.4 Setting the Measuring Method and Measuring Ranges of the 5-27
Analog Input Channels
5.5 Behavior of the Analog Modules 5-30
5.6 Conversion, Cycle, Setting and Response Time of 5-34
Analog Modules
5.7 Analog Module Parameter Assignment 5-38
5.8 Connecting Sensors to Analog Inputs 5-42
5.9 Connecting Voltage Sensors 5-45
5.10 Connecting Current Sensors 5-46
5.11 Connecting Resistance Thermometers and Resistors 5-49
5.12 Connecting Thermocouples 5-52
5.13 Connecting Loads/Actuators to Analog Outputs 5-58
5.14 Connecting Loads/Actuators to Voltage Outputs 5-59
5.15 Connecting Loads/Actuators to Current Outputs 5-61
5.16 Diagnostics of the Analog Modules 5-62
5.17 Analog Module Interrupts 5-66
5.18 Analog Input Module SM 431; AI 8 x 13 Bit; 5-68
(6ES7431-1KF00-0AB0)
5.19 Analog Input Module SM 431; AI 8 x 14 Bit; 5-74
(6ES7431-1KF10-0AB0)
5.20 Analog Input Module SM 431; AI 8 x 14 Bit; 5-88
(6ES7431-1KF20-0AB0)
5.21 Analog Input Module SM 431; AI 16 x 13 Bit; 5-97
(6ES7431-0HH00-0AB0)
5.22 Analog Input Module SM 431; AI 16 x 16 Bit; 5-105
(6ES7431-7QH00-0AB0)
5.23 Analog Input Module SM 431; AI 8 x RTD x 16 Bit; 5-120
(6ES7431-7KF10-0AB0)
5.24 Analog Input Module SM 431; AI 8 x 16 Bit; 5-129
(6ES7431-7KF00-0AB0)
5.25 Analog Output Module SM 432; AO 8 x 13 Bit; 5-141
(6ES7432-1HF00-0AB0)

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 Analog Modules

5.1 Module Overview

Introduction
The following tables summarize the most important characteristics of the analog
modules. This overview is intended to make it easy to choose the suitable module
for your task.

Table 5-1 Analog Input Modules: Characteristics at a Glance

Module SM 431; SM 431; SM 431; SM 431; SM 431; SM 431; SM 431;
AI 8 x 13 AI 8 x 14 AI 8 x 14 AI 13 x 16 AI 16 x 16 AI 8 x RTD AI 8 x 16
Bit Bit Bit Bit Bit 16 Bit Bit
(-1KF00-) (-1KF10-) (-1KF20-) (-0HH0-) (-7QH00-) (-7KF10-) (-7KF00-)
Characteristics
Number of Inputs 8 AI U-/I 8 AI for U/I 8 AI for U/I 16 inputs 16 AI for U/ 8 inputs 8 inputs
measurem measure- measure- I/tempera-
ent ment ment ture mea-
4 AI for 4 AI for re- 4 AI for re- surement
resistance sistance/ sistance 8 AI for re-
measure- tempera- measure- sistance
ment ture mea- ment measure-
surement ment
Resolution 13 bits 14 bits 14 bits 13 bits 16 bits 16 bits 16 bits
Measuring Method Voltage Voltage Voltage Voltage Voltage Resistors Voltage
Current Current Current Current Current Current
Resistors Resistors Resistors Resistors Tempera-
Tempera- Tempera- ture
ture ture
Measuring Integrating Integrating Instanta- Integrating Integrating Integrating Integrating
Principle neous
value en-
coding
Programmable No No No No Yes Yes Yes
Diagnostics
Diagnostic No No No No Adjustable Yes Yes
Interrupt
Limit value No No No No Adjustable Adjustable Adjustable
Monitoring
Hardware No No No No Adjustable Adjustable Adjustable
Interrupt upon
Limit Violation
Hardware No No No No Adjustable No No
Interrupt at End of
Cycle
Potential Analog section isolated from CPU Non- Analog section isolated from CPU
Relationships isolated
Max. Permissible Between Between Between Between Between Between Between
Common Mode the the chan- the chan- the chan- the chan- channel the chan-
Voltage channels or nels or nels or be- nels or be- nels or be- and central nels or be-
between between tween the tween the tween the ground tween the
the refer- the channel reference reference channel point: channel
ence po- and central potential of potential of and central 120 VAC and central
tential of ground the con- the con- ground ground
the con- point: nected nected point: point:
nected 120 VAC sensors sensor and 120 VAC 120 VAC
sensors and MANA: central
and MANA: 8 VAC ground
30 VAC point:
2 VDC/AC

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Analog Modules

Table 5-1 Analog Input Modules: Characteristics at a Glance, continued

Module SM 431; SM 431; SM 431; SM 431; SM 431; SM 431; SM 431;
AI 8 x 13 AI 8 x 14 AI 8 x 14 AI 13 x 16 AI 16 x 16 AI 8 x RTD AI 8 x 16
Bit Bit Bit Bit Bit 16 Bit Bit
(-1KF00-) (-1KF10-) (-1KF20-) (-0HH0-) (-7QH00-) (-7KF10-) (-7KF00-)
Characteristics
Ext. Power Supply No 24 VDC 24 VDC 24 VDC 24 VDC No No
Necessary (only with (only with (only with (only with
current, current, current, current,
2-DMU) 2-DMU) 2-DMU) 2-DMU)
Special Features -- Suitable for Rapid A/D -- Suitable for Resistance Internal
tempera- change, tempera- thermome- measuring
ture mea- suitable for ture mea- ter can be resistor
surement highly dy- surement configured Field con-
Tempera- namic pro- Tempera- Lineariza- nection
ture sensor cesses ture sensor tion of the with inter-
types can Smoothing types can sensor nal refer-
be of the mea- be character- ence tem-
configured sured val- configured istic curves perature
Lineariza- ues Lineariza- Smoothing (included
tion of the tion of the of the mea- with the
sensor sensor sured val- module)
character- character- ues Smoothing
istic curves istic curves of the mea-
Smoothing Smoothing sured val-
of the mea- of the mea- ues
sured val- sured val-
ues ues
2-DMU Two-wire transmitter

Table 5-2 Analog Output Modules: Characteristics at a Glance

Module SM 432; AO 8 x 13 Bit
(-1HF00-)
Characteristics
Number of outputs 8 outputs
Resolution 13 bits
Output type Channel by channel:
• Voltage
• Current
Programmable diagnostics No
Diagnostic Interrupt No
Substitute value output No
Potential relationships Analog section isolated from:
• CPU
• The load voltage
Max. permissible common mode voltage Between the channels and the channels
against MANA 3 VDC
Special Features --

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 Analog Modules

5.2 Sequence of Steps from Choosing to Commissioning

the Analog Modules

Introduction
The following table contains the tasks that you have to perform one after the other
to commission analog modules successfully.
The sequence of steps is a suggestion, but you can perform individual steps either
earlier or later (for example, assign parameters to the module) or install other
modules or install, commission etc. other modules in between times.

Sequence of Steps

Table 5-3 Sequence of Steps from Choosing to Commissioning the Analog Module

Step Procedure Refer To...

1. Select the module Section 5.1 and specific module section from
Section 5.18
2. With some analog input modules: set Section 5.4
the measuring method and
measuring range by means of the
measuring range module
3. Install the module in the SIMATIC S7 “Installation” section in the manual S7-400
network Programmable Controllers, Hardware and Installation
4. Assign parameters to module Section 5.7
5. Connect measuring sensor or loads Sections 5.8 to 5.15
to module
6. Commission configuration “Commissioning” section in the manual S7-400
Programmable Controllers, Hardware and Installation
7. If commissioning was not successful, Section 5.16
diagnose configuration

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Analog Modules

5.3 Analog Value Representation

Introduction
This section describes the analog values for all the measuring ranges and output
ranges which you can use with the analog modules.

Converting Analog Values

Analog input modules convert the analog process signal into digital form.
Analog output modules convert the digital output value into an analog signal.

Analog Value Representation with 16-Bit Resolution

The digitized analog value is the same for both input and output values having the
same nominal range. The analog values are represented as a fixed-point number
in two’s complement. The resulting assignment is as follows:

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Value of bits 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

Bit 15 Can Be Interpreted as a Sign

The sign of the analog value is always contained in bit number 15:
• “0” → +
• “1” → −

Resolution Less than 16 Bits

If the resolution of an analog module has fewer than 16 bits, the analog value is
stored left-justified on the module. The lower-order bit positions not used are
padded with zeros (“0”).

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 Analog Modules

Example
In the following example you can see how the positions not padded with “0” are
written for low resolution.

Table 5-4 Example: Bit Pattern of a 16-Bit and a 13-Bit Analog Value

Resolution Analog Value

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
16-bit analog value 0 1 0 0 0 1 1 0 0 1 1 1 0 0 1 1
13-bit analog value 0 1 0 0 0 1 1 0 0 1 1 1 0 0 0 0

5.3.1 Analog Value Representation for Analog Input Channels

Introduction
The tables in this chapter contain the measured value representations for the
various measuring ranges of the analog input modules. The values in the tables
apply to all modules with the corresponding measuring ranges.

Notes for Readers of the Tables

Tables 5-6 to 5-8 contain the binary representation of the measured values.
Since the binary representation of the measured values is always the same,
starting at 5-9 these tables only contain the measured values and the units.

Measured-Value Resolution
The resolution of the analog values can differ depending on the analog module and
its parameter assignment. With resolutions < 16 bit, the bits marked with “x” are set
to “0”.
Note: This resolution doesn’t apply to temperature values. The changed
temperature values are the result of recalculation in the analog module
(see Tables 5-16 to 5-30).

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Analog Modules

Table 5-5 Possible Resolutions of the Analog Values

Resolution Units Analog Value

i Bits
in Bit
Decimal Hexadecimal High-Order Byte Low-Order Byte
9 128 80H 00000000 1xxxxxxx
10 64 40H 00000000 01xxxxxx
11 32 20H 00000000 001xxxxx
12 16 10H 00000000 0001xxxx
13 8 8H 00000000 00001xxx
14 4 4H 00000000 000001xx
15 2 2H 00000000 0000001x
16 1 1H 00000000 00000001

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Binary Representation of the Input Ranges

The input ranges shown in Tables 5-6 to 5-8 are defined in two’s complement
representation:

Table 5-6 Bipolar Input Ranges

Units Measured Data Word Range

Value
in % 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

32767 >118.515 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Over-

flow
32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over
range
27649 >≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Rated
range
--1 --0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
--27648 --100.000 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0
--27649 ≤--100.004 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 Under
range
--32512 --117.593 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
--32768 ≤--117.596 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Under-
flow

Table 5-7 Unipolar Input Ranges

Units Measured Data Word Range

Value
in % 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

32767 ≥118.515 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Overflow

32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over-
range
27649 ≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1

27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Rated
range
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
--1 --0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Under-
range
--4864 --17.593 1 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0

--32768 ≤--17.596 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Under-

flow

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Analog Modules

Table 5-8 Life-Zero Input Ranges

Units Measured Data Word Range

Value
in % 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

≥32767 ≥118.515 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Over-

flow
32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over-
range
27649 ≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1

27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 Rated

range
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
--1 --0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Under-
range
--4864 --17.593 1 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0

In the event of wire break, the module reports 7FFFH

Analog Value Representation in Voltage Measuring Ranges

Table 5-9 Analog Value Representation in Voltage Measuring Ranges ± 10 V to ± 1 V

System Voltage Measuring Range

Dec. Hex. ± 10 V ±5V ± 2.5 V ±1V
118.515% 32767 7FFF 11.851 V 5.926 V 2.963 V 1.185 V Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 11.759 V 5.879 V 2.940 V 1.176 V Overrange
27649 6C01
100.000% 27648 6C00 10 V 5V 2.5 V 1V
75.000% 20736 5100 7.5 V 3.75 V 1.875 V 0.75 V
0.003617% 1 1 361.7 mV 180.8 m V 90.4 mV 36.17 mV
0% 0 0 0V 0V 0V 0V Rated range
--1 FFFF
--75.00% --20736 AF00 --7.5 V --3.75 V --1.875 V --0.75 V
--100.000% --27648 9400 --10 V --5 V --2.5 V --1 V
--27649 93FF Underrange
--117.593% --32512 8100 --11.759 V --5.879 V --2.940 V --1.176 V
--117.596% --32513 80FF Underflow
--118.519% --32768 8000 --11.851 V --5.926 V --2.963 V --1.185 V

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Table 5-10 Analog Value Representation in the Voltage Measuring Ranges ± 500 mV to ± 25 mV

System Voltage Measuring Range

Dec. Hex. ± 500 mV ± 250 mV ± 80 mV ± 50 mV ± 25 mV
118.515% 32767 7FFF 592.6 mV 296.3 mV 94.8 mV 59.3 mV 29.6 mV Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 587.9 mV 294.0 mV 94.1 mV 58.8 mV 29.4 mV Overrange

27649 6C01
100.000% 27648 6C00 500 mV 250 mV 80 mV 50 mV 25 mV

75% 20736 5100 375 mV 187.54 mV 60 mV 37.5 mV 18.75 mV

0.003617% 1 1 18.08 mV 9.04 mV 2.89 mV 1.81 mV 904.2 nV Rated range

0% 0 0 0 mV 0 mV 0 mV 0 mV 0 mV
--1 FFFF
--75.00% --20736 AF00 --375 mV --187.54 mV --60 mV --37.5 mV --18.75 mV
--100.000% --27648 9400 --500 mV --250 mV --80 mV --50 mV --25 mV
--27649 93FF Underrange

--117.593% --32512 8100 --587.9 mV --294.0 mV --94.1 mV --58.8 mV --29.4 mV

--117.596% --32513 80FF Underflow
--118.519% --32768 8000 --592.6 mV --296.3 mV --94.8 mV --59.3 mV --29.6 mV

Table 5-11 Analog Value Representation in the Voltage Measuring Ranges 1 to 5 V and 0 to 10 V

System Voltage Measuring Range

Dec. Hex. 1 to 5 V 0 to 10 V
118.515% 32767 7FFF 5.741 V 11.852 V Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 5.704 V 11.759 V Overrange
27649 6C01
100.000% 27648 6C00 5V 10 V
75% 20736 5100 3.75 V 7.5 V
0.003617% 1 1 1 V + 144.7 mV 0 V + 361.7 mV Rated range
0% 0 0 1V 0V
--1 FFFF Underrange
--17.593% --4864 ED00 0.296 V Negative
g values not
possible
ibl
--4865 ECFF Underflow
≤--17.596% --32768 8000

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Analog Modules

Analog Value Representation in Current Measuring Ranges

Table 5-12 Analog Value Representation in the Current Measuring Ranges ± 20 mA to ± 3.2 mA

System Current Measuring Range

Dec. Hex. ± 20 mA ± 10 mA ± 5 mA ± 3.2 mA
118.515% 32767 7FFF 23.70 mA 11.85 mA 5.93 mA 3.79 mA Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 23.52 mA 11.76 mA 5.88 mA 3.76 mA Overrange
27649 6C01
100.000% 27648 6C00 20 mA 10 mA 5 mA 3.2 mA
75% 20736 5100 15 mA 7.5 mA 3.75 mA 2.4 mA
0.003617% 1 1 723.4 nA 361.7 nA 180.8 nA 115.7 nA
0% 0 0 0 mA 0 mA 0 mA 0 mA Rated range
--1 FFFF
--75% --20736 AF00 --15 mA --7.5 mA --3.75 mA --2.4 mA
--100.000% --27648 9400 --20 mA --10 mA --5 mA --3.2 mA
--27649 93FF Underrange
--117.593% --32512 8100 --23.52mA --11.76mA --5.88 mA --3.76 mA
--117.596% --32513 80FF Underflow
--118.519% --32768 8000 --23.70 mA --11.85 mA --5.93 mA --3.79 mA

Table 5-13 Analog Value Representation in Current Measuring Ranges 0 to 20 mA

System Current Measuring Range

Dec. Hex. 0 to 20 mA
118.515% 32767 7FFF 23.70 mA Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 23.52 mA Overrange
27649 6C01
100.000% 27648 6C00 20 mA
75% 20736 5100 15 mA
0.003617% 1 1 723.4 nA Rated range
0% 0 0 0 mA
--1 FFFF Underrange
--17.593% --4864 ED00 --3.52 mA
--4865 ECFF Underflow
≤ --17.596% --32768 8000

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 Analog Modules

Table 5-14 Analog Value Representation in Current Measuring Ranges 4 to 20 mA

System Current Measuring Range

Dec. Hex. 4 to 20 mA
118.515% 32767 7FFF 22.96 mA Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 22.81 mA Overrange
27649 6C01
100.000% 27648 6C00 20 mA
75% 20736 5100 16 mA
0.003617% 1 1 4 mA + Rated range
578.7 nA
0% 0 0 4 mA
--1 FFFF Underrange
--17.593% --4864 ED00 1.185 mA
Underflow
≤ --17.596% --32767 7FFF

Analog Value Representation for Resistance-Type Sensors

Table 5-15 Analog Value Representation for Resistance-Type Sensors from 48 Ω to 6 kΩ

System Resistance-Type Sensor Range

Dec. Hex. 48 Ω 150 Ω 300 Ω 600 Ω 6 kΩ
118.515% 32767 7FFF 56.89 Ω 177.77Ω 355.54 Ω 711.09 Ω 7.11 kΩ Overflow
117.593% 32512 7F00
117.589% 32511 7EFF 56.44Ω 176.38 Ω 352.77 Ω 705.53 Ω 7.06 kΩ Overrange
27649 6C01
100.000% 27648 6C00 48 Ω 150 Ω 300 Ω 600 Ω 6 kΩ
75% 20736 5100 36 Ω 112.5 Ω 225Ω 450 Ω 4.5 kΩ Rated
range
0.003617% 1 1 1.74mΩ 5.43mΩ 10.85mΩ 21.70mΩ 217.0mΩ
0% 0 0 0Ω 0Ω 0Ω 0Ω 0Ω

((negative
g values physically
p y y not possible)
p ) Underrange

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A5E00267842-02 5-13
Analog Modules

Analog Value Representation for Resistance Thermometers Pt x00 Standard

Table 5-16 Analog Value Representation for Resistance Thermometers Pt 100, 200, 500,1000

Pt x00 Units Pt x00 Units Pt x00 Units

Standard Standard Standard
in °C Deci- Hexa- in °F Deci- Hexa- in K Deci- Hexa- Range
(1 Digit = mal deci- (1 Digit = mal deci- (1 Digit = mal deci-
0.1°C) mal 0.1 °F) mal 0.1 K) mal

> 1000.0 32767 7FFFH > 1832.0 32767 7FFFH > 1273.2 32767 7FFFH Overflow
1000.0 10000 2710H 1832.0 18320 4790H 1273.2 12732 31BCH
: : : : : : : : : Overrange
850.1 8501 2135H 1562.1 15621 3D05H 1123.3 11233 2BE1H
850.0 8500 2134H 1562.0 15620 3D04H 1123.2 11232 2BE0H
: : : : : : : : : Rated range
--200.0 --2000 F830H --328.0 --3280 F330H 73.2 732 2DCH
--200.1 --2001 F82FH --328.1 --3281 F32FH 73.1 731 2DBH
: : : : : : : : : Underrange
--243.0 --2430 F682H --405.4 --4054 F02AH 30.2 302 12EH
< -- 243.0 --32768 8000H < -- 405.4 --32768 8000H < 30.2 32768 8000H Underflow

Analog Value Representation for Resistance Thermometers Pt x00 Climatic

Table 5-17 Analog Value Representation for Resistance Thermometers Pt 100, 200, 500,1000

Pt x00 Units Pt x00 Units

Climatic Climatic
in °C in °F Range
(1 Digit = Decimal Hexadecimal (1 Digit = Decimal Hexadecimal
0.01°C) 0.01 °F)
> 155.00 32767 7FFFH > 311.00 32767 7FFFH Overflow
155.00 15500 3C8CH 311.00 31100 797CH
: : : : : : Overrange
130.01 13001 32C9H 266.01 26601 67E9H
130.00 13000 32C8H 266.00 26600 67E8H
: : : : : : Rated range
--120.00 --12000 D120H --184.00 --18400 B820H
--120.01 --12001 D11FH --184.01 --18401 B81FH
: : : : : : Underrange
--145.00 --14500 C75CH --229.00 --22900 A68CH
< -- 145.00 --32768 8000H < -- 229.00 --32768 8000H Underflow

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5-14 A5E00267842-02
 Analog Modules

Analog Value Representation for Resistance Thermometers Ni x00 Standard

Table 5-18 Analog Value Representation for Resistance Thermometers Ni100, 120, 200, 500, 1000

Ni x00 Units Ni x00 Units Ni x00 Units

Standard Standard Standard
in °C Deci- Hexa- in °F Deci- Hexa- in K Deci- Hexa- Range
(1 Digit = mal deci- (1 Digit = mal deci- (1 Digit = mal deci-
0.1°C) mal 0.1 °F) mal 0.1 K) mal

> 295.0 32767 7FFFH > 563.0 32767 7FFFH > 568.2 32767 7FFFH Overflow
295.0 2950 B86H 563.0 5630 15FEH 568.2 5682 1632H
: : : : : : : : : Overrange
g
250.1 2501 9C5H 482.1 4821 12D5H 523.3 5233 1471H
250.0 2500 9C4H 482.0 4820 12D4H 523.2 5232 1470H
: : : : : : : : : Rated range
--60.0 --600 FDA8H --76.0 --760 FD08H 213.2 2132 854H
--60.1 --601 FDA7H --76.1 --761 FD07H 213.1 2131 853H
: : : : : : : : : Underrange
g
--105.0 --1050 FBE6H --157.0 --1570 F9DEH 168.2 1682 692H
< --105.0 --32768 8000H < --157.0 --32768 8000H < 168.2 32768 8000H Underflow

Analog Value Representation for Resistance Thermometers Ni x00 Climatic

Table 5-19 Analog Value Representation for Resistance Thermometers Ni 100, 120, 200, 500, 1000

Ni x00 Units Ni x00 Units

Climatic Climatic
in °C in °F Range
(1 Digit = Decimal Hexadecimal (1 Digit = Decimal Hexadecimal
0.01°C) 0.01 °F)
> 295.00 32767 7FFFH > 325.11 32767 7FFFH Overflow
295.00 29500 733CH 327.66 32766 7FFEH
: : : : : : Overrange
250.01 25001 61A9H 280.01 28001 6D61H
250.00 25000 61A8H 280.00 28000 6D60H
: : : : : : Rated range
--60.00 --6000 E890H --76.00 --7600 E250H
--60.01 --6001 E88FH --76.01 --7601 E24FH
: : : : : : Underrange
--105.00 --10500 D6FCH --157.00 --15700 C2ACH
< -- 105.00 --32768 8000H < -- 157.00 --32768 8000H Underflow

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A5E00267842-02 5-15
Analog Modules

Analog Value Representation for Resistance Thermometers Cu 10 Standard

Table 5-20 Analog Value Representation for Resistance Thermometers Cu 10

Cu 10 Units Cu 10 Units Cu 10 Units

Standard Standard Standard
in °C Deci- Hexa- in °F Deci- Hexa- in K Deci- Hexa- Range
(1 Digit = mal deci- (1 Digit = mal deci- (1 Digit = mal deci-
0.01°C) mal 0.01 °F) mal 0.01 K) mal

> 312.0 32767 7FFFH > 593.6 32767 7FFFH > 585.2 32767 7FFFH Overflow
312.0 3120 C30H 593.6 5936 1730H 585.2 5852 16DCH
: : : : : : : : : Overrange
260.1 2601 A29H 500.1 5001 12D5H 533.3 5333 14D5H
260.0 2600 A28H 500.0 5000 1389H 533.2 5332 14D4H
: : : : : : : : : Rated range
--200.0 --2000 F830H --328.0 --3280 F330H 73.2 732 2DCH
--200.1 --2001 F82FH --328.1 --3281 F32FH 73.1 731 2DBH
: : : : : : : : : Underrange
--240.0 --2400 F6A0H --400.0 --4000 F060H 33.2 332 14CH
< -- 240.0 --32768 8000H < -- 400.0 --32768 8000H < 33.2 32768 8000H Underflow

Analog Value Representation for Resistance Thermometers Cu 10 Climatic

Table 5-21 Analog Value Representation for Resistance Thermometers Cu 10

Cu 10 Units Cu 10 Units
Climatic Climatic
in °C in °F Range
(1 Digit = Decimal Hexadecimal (1 Digit = Decimal Hexadecimal
0.01°C) 0.01 °F)
> 180.00 32767 7FFFH > 325.11 32767 7FFFH Overflow
180.00 18000 4650H 327.66 32766 7FFEH
: : : : : : Overrange
150.01 15001 3A99H 280.01 28001 6D61H
150.00 15000 3A98H 280.00 28000 6D60H
: : : : : : Rated range
--50.00 --5000 EC78H --58.00 --5800 E958H
--50.01 --5001 EC77H --58.01 --5801 E957H
: : : : : : Underrange
--60.00 --6000 E890H --76.00 --7600 E250H
< -- 60.00 --32768 8000H < -- 76.00 --32768 8000H Underflow

Automation System S7-400 Module Specifications

5-16 A5E00267842-02
 Analog Modules

Analog Value Representation for Thermocouple Type B

Table 5-22 Analog Value Representation for Thermocouple Type B

Units Units Units

Type B Type B Type B
in °C Deci- Hexa- in °F Deci- Hexa- in K Deci- Hexa- Range
mal deci- mal deci- mal deci-
mal mal mal
> 2070.0 32767 7FFFH > 3276.6 3276.6 7FFFH > 2343.2 32767 7FFFH Overflow
2070.0 20700 50DCH 3276.6 32766 7FFEH 2343.2 23432 5B88H
: : : : : : : : : Overrange
1821.0 18210 4722H 2786.6 27866 6CDAH 2094.2 20942 51CEH
1820.0 18200 4718H 2786.5 27865 6CD9H 2093.2 20932 51C4H
: : : : : : : : : Rated range
0,0 0 0000H --32.0 --320 FEC0H 273.2 2732 0AACH

: : : : : : : : : Underrange
--120.0 --1200 FB50H --184.0 --1840 F8D0H 153.2 1532 05FCH
< --120.0 --32768 8000H < --184.0 --32768 8000H < 153.2 32768 8000H Underflow

Analog Value Representation for Thermocouple Type E

Table 5-23 Analog Value Representation for Thermocouple Type E

Units Units Units

Type E Type E Type E
in °C Decimal Hexade- in °F Decimal Hexade- in K Deci- Hexa- Range
cimal cimal mal deci-
mal
> 1200.0 32767 7FFFH > 2192,0 32767 7FFFH > 1473.2 32767 7FFFH Overflow
1200.0 12000 2EE0H 2192.0 21920 55A0H 1473.2 14732 398CH
: : : : : : : : : Overrange
1000.1 10001 2711H 1833.8 18338 47A2H 1274.2 12742 31C6H
1000.0 10000 2710H 1832.0 18320 4790H 1273.2 12732 31BCH
Rated
: : : : : : : : :
range
--270.0 --2700 F574H --454.0 --4540 EE44H 0 0 0000H
< --270.0 < --2700 < F574H < --454.0 < --4540 <EE44H <0 <0 <0000H Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F0C4H is violated and outputs ...if FB70H is violated and outputs ...if E5D4H is violated and
8000H 8000H outputs 8000H

Automation System S7-400 Module Specifications

A5E00267842-02 5-17
Analog Modules

Analog Value Representation for Thermocouple Type J

Table 5-24 Analog Value Representation for Thermocouple Type J

Units Units Units

Type J Type J Type J Range
in °C Decimal Hexade- in °F Decimal Hexa- in K Deci- Hexade-
cimal decimal mal cimal
> 1450.0 32767 7FFFH > 2642.0 32767 7FFFH > 1723.2 32767 7FFFH Overflow
1450.0 14500 38A4H 2642.0 26420 6734H 1723.2 17232 4350H
: : : : : : : : : Overrange
1201.0 12010 2EEAH 2193.8 21938 55B2H 1474.2 14742 3996H
1200.0 12000 2EE0H 2192.0 21920 55A0H 1473.2 14732 398CH
Rated
: : : : : : : : :
range
--210.0 --2100 F7CCH --346.0 --3460 F27CH 63.2 632 0278H
< --210.0 < --2100 <F7CCH < --346.0 < --3460 <F27CH < 63.2 < 632 < 0278H
Underflow

In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example incorrect thermocouple type), the analog input module reports an
underflow...
...if F31CH is violated and outputs ...if EA0CH is violated and ...if FDC8H is violated and
8000H outputs 8000H outputs 8000H

Analog Value Representation for Thermocouple Type K

Table 5-25 Analog Value Representation for Thermocouple Type K

Units Units Units

Type K Type K Type K Range
in °C Decimal Hexade- in °F Decimal Hexa- in K Deci- Hexade-
cimal decimal mal cimal
> 1622.0 32767 7FFFH > 2951.6 32767 7FFFH > 1895.2 32767 7FFFH Overflow
1622.0 16220 3F5CH 2951.6 29516 734CH 1895.2 18952 4A08H
: : : : : : : : : Overrange
1373.0 13730 35A2H 2503.4 25034 61CAH 1646.2 16462 404EH
1372.0 13720 3598H 2501.6 25061 61B8H 1645.2 16452 4044H
Rated
: : : : : : : : :
range
--270.0 --2700 F574H --454.0 --4540 EE44H 0 0 0000H
< --270.0 < --2700 < F574H < --454.0 < --4540 <EE44H <0 <0 < 0000H Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F0C4H is violated and outputs ...if E5D4H is violated and ...if FB70H is violated and
8000H outputs 8000H outputs 8000H

Automation System S7-400 Module Specifications

5-18 A5E00267842-02
 Analog Modules

Analog Value Representation for Thermocouple Type L

Table 5-26 Analog Value Representation for Thermocouple Type L

Units Units Units

Type L Type L Type L
in °C Decimal Hexa- in °F Decimal Hexa- in K Deci- Hexa- Range
decimal deci- mal decimal
mal
> 1150.0 32767 7FFFH > 2102.0 32767 7FFFH > 1423.2 32767 7FFFH Overflow
1150.0 11500 2CECH 2102.0 21020 521CH 1423.2 14232 3798H
: : : : : : : : : Overrange
901.0 9010 2332H 1653.8 16538 409AH 1174.2 11742 2DDEH
900.0 9000 2328H 1652.0 16520 4088H 1173.2 11732 2DD4H
Rated
: : : : : : : : :
range
--200.0 --2000 F830H --328.0 --3280 F330H 73.2 732 02DCH
< --200.0 < --2000 < F830H < --328.0 < --3280 <F330H < 73.2 < 732 <02DCH Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F380H is violated and outputs ...if EAC0H is violated and ...if FE2CH is violated and
8000H outputs 8000H outputs 8000H

Analog Value Representation for Thermocouple Type N

Table 5-27 Analog Value Representation for Thermocouple Type N

Units Units Units

Type N Type N Type N Range
in °C Decimal Hexade- in °F Decimal Hexade- in K Deci- Hexade-
cimal cimal mal cimal
> 1550.0 32767 7FFFH > 2822.0 32767 7FFFH > 1823.2 32767 7FFFH Overflow
1550.0 15500 3C8CH 2822.0 28220 6E3CH 1823.2 18232 4738H
Overrang
: : : : : : : : :
e
1300.1 13001 32C9H 2373.8 23738 5CBAH 1574.2 15742 3D7EH
1300.0 13000 32C8H 2372.0 23720 5CA8H 1573.2 15732 3D74H
Rated
: : : : : : : : :
range
--270.0 --2700 F574H --454.0 --4540 EE44H 0 0 0000H
< --270.0 < --2700 < F574H < --454.0 < --4540 <EE44H <0 <0 < 0000H Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F0C4H is violated and outputs ...if E5D4H is violated and ...if FB70H is violated and
8000H outputs 8000H outputs 8000H

Automation System S7-400 Module Specifications

A5E00267842-02 5-19
Analog Modules

Analog Value Representation for Thermocouple Types R, S

Table 5-28 Analog Value Representation for Thermocouple Types R, S

Units Units Units

Types R
R, S Types R,
R Types R,
R
in °C Deci- Hexa- S Deci- Hexa- S Deci- Hexa- Range
mal deci- in °F mal deci- in K mal deci-
mal mal mal
> 2019.0 32767 7FFFH > 3276.6 32767 7FFFH > 2292.2 32767 7FFFH Overflow
2019.0 20190 4EDEH 3276.6 32766 7FFEH 2292.2 22922 598AH
: : : : : : : : : Overrange
1770.0 17770 4524H 3218.0 32180 7DB4H 2043.2 20432 4FD0H
1769.0 17690 451AH 3216.2 32162 7DA2H 2042.2 20422 4FC6H
: : : : : : : : : Rated range
--50.0 --500 FE0CH --58.0 --580 FDBCH 223.2 2232 08B8H
--51.0 --510 FE02H --59.8 --598 FDAAH 222.2 2222 08AEH
: : : : : : : : : Underrange
--170.0 --1700 F95CH --274.0 --2740 F54CH 103.2 1032 0408H
< --170.0 --32768 8000H < --274.0 --32768 8000H < 103-2 < 1032 8000H Underflow

Analog Value Representation for Thermocouple Type T

Table 5-29 Analog Value Representation for Thermocouple Type T

Units Units Units

Type T Type T Type T
in °C Decimal Hexa- in °F Decimal Hexa- in K Deci- Hexade- Range
deci- decimal mal cimal
mal
> 540.0 32767 7FFFH > 1004.0 32767 7FFFH > 813.2 32767 7FFFH Overflow
540.0 5400 1518H 1004.0 10040 2738H 813.2 8132 1FC4H
: : : Overrange
401.0 4010 0FAAH
400.0 4000 0FA0H 752.0 7520 1D60H 673.2 6732 1AACH
Rated
: : : : : : : : :
range
--270.0 --2700 F574H --454.0 --4540 EE44H 3.2 32 0020H
< --270.0 < --2700 H < --454.0 < --4540 <EE44H < 3.2 < 32 < 0020H Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F0C4H is violated and ...if E5D4H is violated and ...if FB70H is violated and
outputs 8000H outputs 8000H outputs 8000H

Automation System S7-400 Module Specifications

5-20 A5E00267842-02
 Analog Modules

Analog Value Representation for Thermocouple Type U

Table 5-30 Analog Value Representation for Thermocouple Type U

Units Units Units

Type U Type U Type U
in °C Decimal Hexa- in °F Decimal Hexa- in K Deci- Hexa- Range
deci- deci- mal decimal
mal mal
> 850.0 32767 7FFFH > 1562.0 32767 7FFFH > 1123.2 32767 7FFFH Overflow
850.0 8500 2134H 1562.0 15620 D04H 1123.2 11232 2BE0H
: : : : : : : : : Overrange
601.0 6010 177AH 1113.8 11138 2B82H 874.2 8742 2226H
600.0 6000 W 1770H 1112.0 11120 2B70H 873.2 8732 221CH
: : : : : : : : : Rated range
--200.0 --2000 F830H --328.0 --3280 F330H 73.2 732 02DCH
< --200.0 < --2000 H < --328.0 < --3280 H < 73.2 < 732 <02DCH Underflow
In the case of incorrect wiring (for example, polarity reversal or open inputs) or of a sensor error in the
negative range (for example, incorrect thermocouple type), the analog input module reports an
underflow...
...if F380H is violated and ...if EAC0H is violated and ...if FE2CH is violated and
outputs 8000H outputs 8000H outputs 8000H

Automation System S7-400 Module Specifications

A5E00267842-02 5-21
Analog Modules

5.3.2 Analog Value Representation for Analog Output Channels

Introduction
The tables in this chapter contain the analog value representation for output
channels of the analog output modules. The values in the tables apply to all
modules with the corresponding output ranges.

Notes on How to Read the Tables

Tables 5-31 to 5-33 contain the binary representation of the output values.
Since the binary representation of the output values is always the same, starting at
5-34 these tables only contain the output ranges and the units.

Binary Representation of the Output Ranges

The output ranges shown in Tables 5-31 to 5-33 are defined in two’s complement
representation:

Table 5-31 Bipolar Output Ranges

Units Output Data Word Range

Value in
% 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

≥32512 0% 0 1 1 1 1 1 1 1 x x x x x x x x Overflow
32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over-
range
27649 ≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Rated
range
--1 --0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
--27648 --100.000 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0
--27649 ≤100.004 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 Under
range
--32512 --117.593 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
≤32513 0% 1 0 0 0 0 0 0 0 x x x x x x x x Under-
flow

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5-22 A5E00267842-02
 Analog Modules

Table 5-32 Unipolar Output Ranges

Units Output Data Word Range

Value in
% 215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

≥32512 0% 0 1 1 1 1 1 1 1 x x x x x x x x Overflow
32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over-
range
27649 ≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Rated
range
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
--1 0.000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Limited
to rated
range
lower
--32512 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 limit of
0 V and
0 mA
≤32513 0% 1 0 0 0 0 0 0 0 x x x x x x x x Under-
flow

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Analog Modules

Table 5-33 Life-Zero Output Ranges

Units Output Data Word Range

Value
V l iin %
215 214 213 212 211 210 29 28 27 26 25 24 23 22 21 20

≥ 32512 0 % 0 1 1 1 1 1 1 1 x x x x x x x x Over-
flow
32511 117.589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Over-
range
27649 ≥100.004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100.000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 Rated
range
1 0.003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0.000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
--1 --0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Under-
range
--6912 --25.000 1 1 1 0 0 1 0 1 0 0 0 0 0 0 0 0
--6913 1 1 1 0 0 1 0 0 1 1 1 1 1 1 1 1 Limited
to
over-
range
--25.000 lower
limit
--32512 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
0V
and
0 mA
≤--32513 --25% 1 0 0 0 0 0 0 0 x x x x x x x x Under-
flow

Automation System S7-400 Module Specifications

5-24 A5E00267842-02
 Analog Modules

Analog Value Representation in Voltage Output Ranges

Table 5-34 Analog Value Representation in Output Range ± 10 V

System Voltage Output Range

Dec. Hex. ± 10 V
118.5149% 32767 7FFF 0.00 V Overflow, off circuit and deenergized
g
32512 7F00
117.589% 32511 7EFF 11.76 V Overrange
27649 6C01
100% 27648 6C00 10 V
75% 20736 5100 7.5 V
0.003617% 1 1 361.7 µV Rated range
0% 0 0 0V
--1 FFFF --361.7 µV
--75% --20736 AF00 --7.5 V
--100% --27648 9400 --10 V
--27649 93FF Underrange
--117.593% --32512 8100 --11.76 V
--32513 80FF Underflow, off circuit and deenergized
g
--118.519% --32768 8000 0.00 V

Table 5-35 Analog Value Representation in Output Ranges 0 to 10 V and 1 to 5 V

System Voltage Output Range

Dec. Hex. 0 to 10 V 1 to 5 V
118.5149% 32767 7FFF 0.00 V 0.00 V Overflow, off circuit and
32512 7F00 d
deenergized
i d

117.589% 32511 7EFF 11.76 V 5.70 V Overrange

g
27649 6C01
100% 27648 6C00 10 V 5V
75% 20736 5100 7.5 V 3.75 V
0.003617% 1 1 361.7µV 1V+144.7µV Rated range
0% 0 0 0V 1V
--1 FFFF Underrange
g
--25% --6912 E500 0V
--6913 E4FF Not possible.
The output value is limited
--117.593% --32512 8100 to 0 V.
--32513 80FF Underflow, off circuit and
d
deenergized
i d
--118.519% --32768 8000 0.00 V 0.00 V

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A5E00267842-02 5-25
Analog Modules

Analog Value Representation in Current Output Ranges

Table 5-36 Analog Value Representation in Output Range ± 20 mA

System Current Output Range

Dec. Hex. ± 20 mA
118.5149% 32767 7FFF 0.00 mA Overflow, off circuit and deenergized
32512 7F00
117.589% 32511 7EFF 23.52 mA Overrange
27649 6C01
100% 27648 6C00 20 mA
75% 20736 5100 15 mA
0.003617% 1 1 723.4 nA
0% 0 0 0 mA Rated range
--1 FFFF --723.4 mA
--75% --20736 AF00 --15 mA
--100% --27648 9400 --20 mA
--27649 93FF Underrange
--117.593% --32512 8100 --23.52 mA
--32513 80FF Underflow, off circuit and deenergized
--118.519% --32768 8000 0.00 mA

Table 5-37 Analog Value Representation in Output Ranges 0 and 20 mA and 4 to 20 mA

System Current Output Range

Dec. Hex. 0 to 20 mA 4 to 20 mA:
118.5149% 32767 7FFF 0.00 mA 0.00 mA Overflow, off circuit
and
dddeenergized
i d
32512 7F00
117.589% 32511 7EFF 23.52 mA 22.81 mA Overrange
27649 6C01
100% 27648 6C00 20 mA 20 mA
75% 20736 5100 15 mA 15 mA Rated range
0.003617% 1 1 723.4 nA 4mA+578.7 nA
0% 0 0 0 mA 4 mA
--1 FFFF Underrange
--25% --6912 E500 0 mA
--6913 E4FF Not possible. The
output value is
--117.593% --32512 8100 limited to 0 mA.
--32513 80FF Underflow, off circuit
and
dddeenergized
i d
--118.519% --32768 8000 0.00 mA 0.00 mA

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 Analog Modules

5.4 Setting the Measuring Method and Measuring Ranges

of the Analog Input Channels

Two Procedures
There are two procedures for setting the measuring method and the measuring
ranges of the analog input channels of the analog modules:
• With a measuring range module and STEP 7
• By wiring the analog input channel and STEP 7
Which of these two methods is used for the individual analog modules depends on
the module and is described in detail in the specific module sections.
The procedure for setting the measuring method and measuring range of the
module in STEP 7 is described in Section 5.7.
The following section describes how you set the measuring method and the
measuring range by means of measuring range modules.

Setting the Measuring Method and the Measuring Ranges with Measuring Range
Modules
If the analog modules have measuring range modules, they are supplied with the
measuring range modules plugged in.
If necessary, the measuring range modules must be replugged to change the
measuring method and the measuring range.

Attention
Make sure that the measuring range modules are on the side of the analog input
module.
Before installing the analog input module, therefore, check whether the measuring
range modules have to be set to another measuring method and another
measuring range.

Possible Settings for the Measuring Range Modules

The measuring range modules can be set to the following positions: “A”, “B”, “C” and
“D”.
Which measuring range module positions you must select for the individual
measuring methods and measuring ranges is described in detail in the specific
module section.
The settings for the various types of measurement and measuring ranges are also
printed on the analog module.

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Analog Modules

Replugging Measuring Range Modules

If you want to replug a measuring range module, perform the following steps:
1. Use a screwdriver to ease the measuring range module out of the analog input
module.

Figure 5-1 Levering the Measuring Range Module out of the Analog Input Module

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 Analog Modules

2. Insert the measuring range module (correctly positioned (1) into the analog
input module.
The measuring range selected is the one that points to marker point on
module (2).

Figure 5-2 Inserting the Measuring Range Module into the Analog Input Module

Perform the same steps for all other measuring range modules.
The next step is to install the module.

Caution
! This can result in damage.
If you have not set the measuring range modules correctly, the module may be
destroyed.
Make sure that the measuring range module is in the correct position before
connecting a sensor to the module.

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Analog Modules

5.5 Behavior of the Analog Modules

Introduction
In this section, you will find information on:
• How the analog input and output values depend on the operating modes of the
CPU and the supply voltage of the analog module
• The behavior of the analog modules depending on where the analog values lie
within the value range
• The effect of errors on analog modules with diagnostics capability
• The effect of the operational limit of the analog module on the analog input and
output value, as illustrated by an example

5.5.1 Effect of Supply Voltage and Operating Mode

The input and output values of the analog modules depend on the operating mode
of the CPU and on the supply voltage of the module.

Table 5-38 Dependencies of the Analog Input/Output Values on the Operating Mode of the CPU and the
Supply Voltage L+
CPU Operating Supply Voltage L+ at Output Value of the Analog Input Value of the
Mode Analog Module Output Module Analog Input Module*

POWER RUN L+ p
present CPU values Measured value
ON Until the first conversion... 7FFFH until the first
• after power-up has been conversion following
completed, a signal of 0 power-up or after
mA or 0 V is output. parameter assignment of
the module has been
• after parameter completed
assignment has been
completed, the previous
value is output.
L+ missing 0 mA/0 V
POWER STOP L+ present Substitute value/last value Measured value
ON (default values: 0 mA/0 V)
7FFFH until the first
conversion following
power-up or after
L+ missing 0 mA/0 V parameter assignment of
the module has been
completed
POWER -- L+ present 0 mA/0 V --
OFF L+ missing 0 mA/0 V --
* L+ only required with 2-wire transmitters

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Behavior on Failure of the Supply Voltage

Failure of the load power supply L+ of the diagnostics-capable analog module is
indicated in the case of configured two-wire transmitters by the EXTF LED on the
module. Furthermore, this information is made available on the module (entry in
diagnostic buffer).
Triggering of a diagnostic interrupt depends on the parameter assignment
(see Section 5.7).

5.5.2 Effect of Range of Values of the Analog Values

Effect of Errors on Analog Modules with Diagnostics Capability

Any errors that occur can lead to a diagnostics entry and a diagnostic interrupt with
analog modules with diagnostics capability and corresponding parameter
assignment. You will find the errors that might be involved in Section 5.16.

Effect of Range of Values on the Analog Input Module

The behavior of the analog modules depends on where the input values lie within
the range of values.

Table 5-39 Behavior of the Analog Input Modules as a Function of the Position of the
Analog Value Within the Range of Values

Measured Input Value LED Diagnostics Interrupt

Value In (EXTF)
Rated range Measured -- -- --
value
Overrange/ Measured -- -- --
underrange value
Overflow 7FFFH Flashes1) Entered1) Diagnostic
interrupt1)
Underflow 8000H Flashes1) Entered1) Diagnostic
interrupt1)
Beyond the Measured -- -- Hardware
programmed value interrupt1)
limit
1) Only for modules with diagnostics capability and depending on parameter assignment

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Analog Modules

Effect of Range of Values on the Analog Output Module

The behavior of the analog modules depends on where the output values lie within
the value range.

Table 5-40 Behavior of the Analog Output Modules as a Function of the Position of the
Analog Value Within the Range of Values

Process Value Output Value LED Diagnostics Interrupt

Lies Within (EXTF)
Rated range CPU value -- -- --
Overrange/und CPU value -- -- --
errange
Overflow 0 signal -- -- --
Underflow 0 signal -- -- --

5.5.3 Effect of Operational Limit and Basic Error Limit

Operational Limit
The operational limit is the measuring error or output error of the analog module
over the entire temperature range authorized for the module, referred to the rated
range of the module.

Basic Error Limit

The basic error limit is the operational limit at 25°C, referred to the rated range of
the module.

Note
The percentage details of operational and basic error limits in the technical
specifications of the module always refer to the highest possible input and output
value in the rated range of the module. In the measurement range  10 V this
would be the 10 V

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Example of Determination of the Output Error of a Module

An analog output module SM 432; AO 8 x13 Bit is being used for voltage output.
The output range “10 V” is used. The module is operating at an ambient
temperature of 30°C. The operational limit thus applies. The technical
specifications of the module state:
• Operational limit for voltage output:×0.5%
An output error, therefore, of 0.05 V (0.5% of 10 V) over the whole rated range
of the module must be expected.
This means that with an actual voltage of, say, 1 V, a value in the range from 0.95
V to 1.05 V is output by the module. The relative error is 5% in this case.
The figure below shows for the example how the relative error becomes
increasingly less the more the output value approximates to the end of the rated
range of 10 V.

0.05 V 0.05 V 0.05 V

(≙ 5%) (≙ 0.625%) (≙ 0.5%*)

Output Value
--1 V 0V 1V 8V 10 V
* Operational limit
Figure 5-3 Example of the Relative Error of an Analog Output Module

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Analog Modules

5.6 Conversion, Cycle, Setting and Response Time of

Analog Modules

Conversion Time of Analog Input Channels

The conversion time consists of a basic conversion time and additional processing
times of the module for:
• Resistance test
• Wire-break monitoring
The basic conversion time depends directly on the conversion method of the
analog input channel (integrating method, instantaneous value conversion).
In the case of integrating conversion methods, the integration time has a direct
influence on the conversion time. The integration time depends on the interference
frequency suppression that you set in STEP 7 (refer to Section 5.7).
To find out the basic conversion times and additional processing times of the
different analog modules, refer to the technical specifications of the module
concerned, starting at Section 5.18.

Scan Time of Analog Input Channels

Analog-to-digital conversion and the transfer of the digitized measured values to
the memory and/or to the bus backplane are performed sequentially --in other
words, the analog input channels are converted one after the other. The scan time
--in other words, the time elapsing until an analog input value is again converted, is
the sum of the conversion times of all activated analog input channels of the analog
input module.
The following figure illustrates the components of the scan time for an n-channel
analog module.

Conversion time,
channel 1

Conversion time,
channel 2 Cycle time

Conversion time,
channel n

Figure 5-4 Scan Time of an Analog Input or Output Module

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Basic Execution Time of the Analog Input Channels

The basic execution time corresponds to the cycle time for all the enabled
channels.

Setting the Smoothing of Analog Values

You can set the smoothing of the analog values in STEP 7 for some analog input
modules.

Using Smoothing
Smoothing of analog values ensures a stable analog signal for further processing.
It makes sense to smooth the analog values with slow variations of measured
values --for example, with temperature measurements.

Smoothing Principle
The measured values are smoothed by digital filtering. Smoothing is accomplished
by the module calculating average values from a defined number of converted
(digitized) analog values.
The user assigns parameters to smoothing at not more than four levels (none, low,
average, high). The level determines the number of analog signals used for
averaging.
The higher the smoothing level chosen, the more stable is the smoothed analog
value and the longer it takes until the smoothed analog signal is applied after a
step response (refer to the following example).

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Analog Modules

Example
The following figure shows the number of module cycles for a step response after
which the smoothed analog value is approximately 100% applied, as a function of
the smoothing that has been set. The figure applies to every change of signal at
the analog input.

Signal variation Step response for any analog input signal

in percent
100

63

50

0 50 100 150 200

Smoothing: low:
Module cycles
average:
high:
Figure 5-5 Example of the Influence of Smoothing on the Step Response

Additional Information on Smoothing

Refer to the specific section on the analog input module (from Section 5.18) to
determine whether smoothing can be set for the specific module and for any
special features that have to be taken into account.

Conversion Time of the Analog Output Channels

The conversion time of the analog output channels comprises the transfer of the
digitized output values from the internal memory and the digital-to-analog
conversion.

Scan Time of Analog Output Channels

The analog output channels are converted sequentially -- in other words, the
analog output channels are converted one after the other.
The scan time -- in other words, the time elapsing until an analog output value is
again converted -- is the sum of the conversion times of all activated analog output
channels (refer to 5-4).

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Basic Execution Time of the Analog Output Channels

The basic execution time corresponds to the cycle time for all the enabled
channels.

Tip
You should disable any analog channels that are not being used to reduce the scan
time in STEP 7.

Overview of the Settling Time and Response Time of the Analog Output Modules

tA

tE
tZ

t1 t2 t3

tA = response time
tZ = cycle time corresponds to n × conversion time (n = activated channels)
tE = settling time
t1 = new output value is present
t2 = output value transferred and converted
t3 = specified output value reached

Figure 5-6 Settling and Response Times of the Analog Output Channels

Settling Time
The settling time (t2 to t3) -- in other words, the time elapsing from application the
converted value until the specified value is reached at the analog output -- is
load-dependent. A distinction is made between resistive, capacitive and inductive
loads.
For the settling times of the different analog output modules as a function of load
refer to the technical specifications of the module concerned, starting at
Section 5.18.

Response Time
The response time (t1 to t3) -- in other words, the time elapsing from application of
the digital output values in the internal memory until the specified value is reached
at the analog output -- in a worst case scenario is the sum of the scan time and the
settling time.
You have a worst case situation if, shortly prior to the transfer of a new output
value, the analog channel has been converted and is not converted again until all
other channels are converted (cycle time).

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Analog Modules

5.7 Analog Module Parameter Assignment

Introduction
Analog modules can have different characteristics. You can set the characteristics
of the modules by means of parameter assignment.

Tools for Parameter Assignment

You assign parameters to analog modules with STEP 7.
When you have set all the parameters, download the parameters from the
programming device to the CPU. When there is a transition from STOP to RUN
mode, the CPU transfers the parameters to the individual analog modules.
In addition, if necessary you must place the measuring range modules of the
module in the necessary position (refer to Section 5.4).

Static and Dynamic Parameters

The parameters are divided into static and dynamic parameters.
Set the static parameters in STOP mode of the CPU, as described above.
You can similarly modify the dynamic parameters in the current user program by
means of SFCs. Note, however, that after a change from RUN → STOP, STOP →
RUN of the CPU, the parameters set in STEP 7 apply again. You will find a
description of the parameter assignment of modules in the user program in
Appendix A.

Configuration in RUN (CiR)

You can use this method to modify the system or the configuraion of specific
modules while the system is in RUN. That is, the CPU stays in RUN upt o a
maximum period of 2.5 seconds.
For further information on this topic, refer to the ”Configuration in RUN by means of
CiR” manual. This manual is included in PDF format on the STEP 7 CD.

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5.7.1 Parameters of the Analog Input Modules

The analog input modules use a subset of the parameters and ranges of values
listed in the table below, depending on the functionality. Refer to the section on the
module concerned, starting from Section 5.18, to find out which subset the module
is capable of using.
The default settings apply if you have not performed parameter assignment in
STEP 7.

Table 5-41 Parameters of the Analog Input Modules

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) No
Yes/no Dynamic Module
No
Yes/no
• Hardware interrupt1)
• Destination CPU for 1 to 4 --
Static Module
interrupt
Trigger for hardware
interrupt
No Static Channel
• End of scan cycle Yes/no
reached at input
Constraint possible due to measuring
range
-- Dynamic Channel
• High limit 32511 to --32512
• Low limit --32512 to 32511
Diagnostics
• Wire break Yes/no
No
• Reference channel Yes/no
No
error No Static Channel
Yes/no
• Underflow Yes/no
No
• Overflow Yes/no
No
• Short circuit to M

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Analog Modules

Table 5-41 Parameters of the Analog Input Modules, continued

Parameter Value Range Default2) Parameter Scope

Type
Measurement
• Measuring type Disabled U
U Voltage
4DMU Current
(four-wire transmitter)
2DMU Current
(two-wire transmitter)
R-4L Resistance
(four-conductor connection)
R-3L Resistance
three-conductor connection Static Channel
RTD-4L Thermal resistor
(linear, four-conductor
connection)
RTD-3L Thermal resistor
(linear, three-conductor
connection)
TC-L Thermocouple (linear)
• Measuring range For the settable measuring ranges of 10 V
the input channels, please refer to the
individual module description.
• Reference --273.15 to 327.67 oC 0 oC
Dynamic Module
temperature
• Temperature unit Degrees Celsius; degrees Fahrenheit; Degrees
Static Module
Kelvins Celsius
• Temperature Platinum (Pt) 0.00385
coefficient for 0.00385 Ω/Ω/°C
temperature 0.003916 Ω/Ω/°C
measurement with 0.003902 Ω/Ω/°C
thermal resistor 0.003920 Ω/Ω/°C
(RTD) Nickel (Ni)
0.00618 Ω/Ω/°C
0.00672 Ω/Ω/°C Static Channel
• Interference 400 Hz; 60 Hz; 50 Hz; 10 Hz; none 50 or 60
frequency Hz
suppression
• Smoothing None None
Low
Average
High
• Reference junction None None
Internal
RTD on channel 0
Reference temperature value dynamic

1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

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5.7.2 Parameters of the Analog Output Modules

The analog output modules use a subset of the parameters and ranges of values
listed in the table below, depending on the functionality. Refer to the section on the
module concerned, starting from Section 5.18, to find out which subset the module
is capable of using.
The default settings apply if you have not performed parameter assignment in
STEP 7.

Table 5-42 Parameters of the Analog Output Modules

Parameter Value Range Default1) Parameter Scope

Type
Output
• Type of output Disabled U
Voltage
Current Static Channel
• Output range For the settable measuring ranges of the 10 V
output channels, please refer to the
individual module description.
1) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

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Analog Modules

5.8 Connecting Sensors to Analog Inputs

Introduction
You can connect different sensors to the analog input modules depending on the
measuring method; voltage and current sensors, and resistors.
This section contains general information that is generally applicable to all the
connection options for sensors described in the sections that follow.

Cables for Analog Signals

To reduce electrical interference, you should use twisted-pair shielded cables for
the analog signals. The shield of the analog signal cables should be grounded at
both cable ends.
If there are potential differences between the cable ends, an equipotential bonding
current can flow over the shield, which leads to an interference of the analog
signals. In such a case, you should ground the shield at one end of the cable only.

Non-Isolated Analog Input Modules

In the case of the non-isolated analog input modules there is an electrical
connection between the reference point of the measuring circuit MANA and chassis
ground.
You use non-isolated analog modules if there are few or no potential differences
between the measuring sensors and chassis ground.

Isolated Analog Input Modules

With the isolated analog input modules there is no electrical connection between
the reference point of the measuring circuit MANA and chassis ground.
You use isolated analog input modules if a potential difference UISO can occur
between the reference point of the measuring circuit MANA and chassis ground. By
means of an equipotential bonding conductor between the MANA terminal and
chassis ground, make sure that UISO does not exceed the permitted value.

Limited Potential Difference UCM

Only a limited potential difference UCM (common mode voltage) may occur
amongst the M-- measuring lines of the input channels and between the leads and
the reference point of the measuring circuit MANA. In order to prevent the
permissible value from being exceeded, you must take different actions, described
below, depending on the potential connection of the sensors.

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Abbreviations and Mnemonics Used in the Figures Below

The abbreviations and mnemonics used in the figures below have the following
meanings:
M +: Measuring line (positive)
M --: Measuring line (negative)
MANA: Reference potential of the analog measuring circuit
UCM: Potential difference between inputs and reference potential of
the MANA measuring circuit
UISO: Potential difference between MANA and chassis ground

Connection of Isolated Measuring Sensors

The isolated sensors are not connected with the local ground potential (local
ground). They can be operated free of potential.
With isolated sensors, potential differences might arise between the different
sensors. These potential differences can arise as a result of interference or the
local distribution of the sensors.
To ensure that the permissible value for UCM is not exceeded during use in heavily
EMC-affected environments, connect M-- to MANA in modules with an MANA
connection.

M+
M--
Isolated
M+
sensors
M--
Connection required
for modules with
MANA MANA

UISO

Chassis ground

Figure 5-7 Connecting Isolated Sensors to an Isolated AI

Note
Do not connect M-- to MANA when connecting two-wire transmitters for current
measurement and when connecting resistance-type sensors. This also applies to
inputs which are not used.

Non-Isolated Sensors
The non-isolated sensors are connected with the local ground potential (local
ground). When using non-isolated sensors, you must connect MANA to chassis
ground.

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Analog Modules

Connecting Non-Isolated Sensors

Caused by local conditions or interference, potential differences UCM (static or
dynamic) can occur between the locally distributed individual measuring points. If
the potential difference UCM exceeds the permissible value, you must provide
equipotential bonding conductors between the measuring points.

Non-isolated M+
sensors M--
M+
M--

UCM

MANA

Equipotential
UISO
bonding conductor
Chassis ground

Figure 5-8 Connecting Non-Isolated Sensors to an Isolated AI

Note
Do not use non-isolated two-wire transmitters and non-isolated resistance sensors!

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5.9 Connecting Voltage Sensors

Note
The necessary connecting cables, which result from the potential connection of the
analog input module and the sensors, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.8 with
its generally applicable information on connecting sensors.

Abbreviations and Mnemonics Used in the Figure Below

The abbreviations and mnemonics used in the figure below have the following
meanings:
M +: Measuring line (positive)
M -- : Measuring line (negative)
MANA: Reference potential of the analog measuring circuit

Connection of Voltage Sensors

+ M+
U M--
-- M+
+ M--
U
--

MANA*

* Connection required in the case of modules with MANA

Figure 5-9 Connecting Voltage Sensors to an AI

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Analog Modules

5.10 Connecting Current Sensors

Note
The necessary connecting cables, which result from the potential connection of the
analog input module and the sensors, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.8 with
its generally applicable information for connecting sensors.

Abbreviations and Mnemonics Used in the Figures Below

The abbreviations and mnemonics used in the figures below have the following
meanings:
M +: Measuring line (positive)
M --: Measuring line (negative)
MANA: Reference potential of the analog measuring circuit
M: Ground terminal
L +: Terminal for 24 VDC supply voltage
U H: Auxiliary supply
MI+: Current measuring line (positive)
MV+: Voltage measuring line (positive)

Supply Voltage of the Sensors

The two-wire transmitter receives its short-circuit-proof power supply via the
terminals of the analog input module.
This transmitter then converts the measured variable into a current.
Because the two-wire transmitter is supplied by the module, you must not ground
the M-- cables.
Four-wire transmitters require a separate supply voltage UH (auxiliary supply).

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Connecting Two-Wire Transmitters

+24 V
Sensor, for example,
pressure gauge L+
Two-wire
transmitter + M+
P M-
--
M+
P +
Two-wire M-
transmitter
--

*
MANA
M M

* Connection required in the case of modules with MANA

Figure 5-10 Connecting Two-Wire Transmitters to an Isolated AI

SM 431; 8 x 13 Bit: Connecting Two-Wire Transmitters

Because the supply voltage for the two-wire transmitters is not fed by the SM 431;
8 x 13 Bit, you must supply the sensors separately with 24 V.

+24 V

Sensor, for example,

Two-wire MV+
pressure gauge transmitter + MI+
P MI+
--
M--
P +
Two-wire MV+
transmitter --
MI+
MI+
M--

M MANA

Figure 5-11 Connecting Two-Wire Transmitters to an SM 431; 8 x 13 Bit

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Analog Modules

Connecting Four-Wire Transmitters

Sensor,
+ M+
for example, P
M--
pressure gauge Four-wire --
M+
transmitter +
P M--
--

UH
* *

MANA

* Connection required in the case of modules with MANA

Figure 5-12 Connecting Four-Wire Transmitters to an AI

SM 431; 8 x 13 Bit: Connecting Four-Wire Transmitters

To ensure that the permissible value for UCM is not exceeded, you must connect
the M-- cables to MANA.

Sensor, for example, MV+

pressure gauge MI+
P + MI+
Four-wire -- M--
transmitter + MV+
P MI+
--
MI+
M--

UH

Figure 5-13 Connecting Four-Wire Transmitters to an SM 431; 8 x 13 Bit

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5.11 Connecting Resistance Thermometers and Resistors

Note
The necessary connecting cables, which result from the potential connection of the
analog input module and the sensors, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.8 with
its generally applicable information for connecting sensors.

Abbreviations and Mnemonics Used in the Figures Below

The abbreviations and mnemonics used in the figures below have the following
meanings:
IC+: Constant-current lead (positive)
IC-- : Constant-current lead (negative)
M+: Measuring line (positive)
M-- : Measuring line (negative)

Connecting Resistance Thermometers and Resistors

The resistance thermometers/resistors are wired in a four-conductor,
three-conductor or two-conductor connection.
With four-conductor and three-conductor connections, the module supplies a
constant current via terminals IC + and IC -- so that the potential drop occurring on
the measuring cables is compensated. It is important that the connected constant
current cables are directly connected to the resistance thermometer/resistor.
Measurements with four-conductor or three-conductor connections supply a more
precise measuring result due to compensation than measurements with a
two-conductor connection.

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Analog Modules

Four-Conductor Connection of a Resistance Thermometer

The voltage generated at the resistance thermometer is measured via the M+ and
M-- terminals. When you connect, watch out for the polarity of the connected cable
(connect IC + and M+ as well as IC-- and M-- to the resistance thermometer).
Make sure that the connected cables IC + and M+ and SO and SE+ and cables
IC -- and M-- and AGND and SE-- are connected directly on the resistance
thermometer.

M+ SE+
M-- SE--
IC+ SO
IC-- AGND
IC

Figure 5-14 Four-Conductor Connection of Resistance Thermometers on an AI

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Three-Conductor Connection of a Resistance Thermometer

During three-conductor connection to modules with 4 terminals per resistance
thermometer, you must set up a jumper between M-- and IC -- and SE-- and
AGND (see Figure 5-15).
The module compensates in this circuit for the effect of the line resistance between
the module and the resistance thermometer/resistor.
Make sure that the connected cables IC + and M+ and the cables SO and SE+ are
directly connected to the resistance thermometer.
To get an accurate measurement, make sure that the connected cables M+, IC +
and IC -- and the cables SE+, SO and AGND are the same length and have the
same cross-section.

M+ SE+
M-- SE--
IC+ SO
IC-- AGND
IC

Figure 5-15 Three-Wire Connection of Resistance Thermometers to an AI

Two-Conductor Connection of a Resistance Thermometer

With a two-conductor connection, you must insert jumpers on the module between
M+ and IC+ and between M-- and IC-- .
Note: Cable resistance is also measured.

M+
M--
IC+
IC--

Figure 5-16 Two-Wire Connection of Resistance Thermometers to an AI

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Analog Modules

5.12 Connecting Thermocouples

Design of Thermocouples
A thermocouple consists of a pair of sensors and the necessary installation and
connecting parts. The thermocouple consists of two wires of dissimilar metals or
metal alloys soldered or welded together at the ends.
There are different types of thermocouple, depending on the composition of the
material used -- for example, K, J, N thermocouples. The measuring principle of all
thermocouples is the same, irrespective of their type.

Measuring junction
Thermocouple with positive or
negative limbs
Connecting point
Compensating leads

Reference
junction
Leads

Measurement input

°C

Figure 5-17 Design of Thermocouples

Principle of Operation of Thermocouples

If the measuring point is subjected to a temperature different from that of the free
ends of the thermocouple (point of connection), a voltage, the thermo emf, occurs
at the free ends. The magnitude of the thermo-e.m.f. generated depends on the
difference between the temperature at the measuring junction and the temperature
at the free ends, as well as on the material combination used for the thermocouple.
Since a thermocouple always measures a temperature difference, the free ends
must be kept at a known temperature at a reference junction in order to determine
the temperature of the measuring junction.
The thermocouples can be extended from their point of connection to the reference
junction by means of compensating wires. These compensating wires consist of
the same material as the thermocouple wires. The supply leads are copper wire.
Note: Make sure these wires are connected with the correct polarity, otherwise
there will be considerable measuring errors.

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Compensation of the Reference Junction Temperature

There are several options for you to choose from for acquiring the reference
junction temperature in order to obtain an absolute temperature value from the
difference in temperature between the reference junction and measuring point.
You can use internal or external compensation, depending on where you want the
reference junction to be.
The last column of the following table lists the feature you must set for the
“Reference Junction” parameter in STEP 7. The reference temperature value is a
separate parameter in STEP 7.

Table 5-43 Options for Compensation of the Reference Junction Temperature

Option Explanation Ref.

Junction
No compensation When you want to acquire only the difference in None
(refer to Figure 5-18 for connection) temperature between the measuring point and the
reference junction
Internal compensation If you employ internal compensation, the internal Internal
(refer to Figure 5-18 for connection) temperature of the module is used for comparison
purposes.
External compensation with a You have already acquired and compensated the None
compensating box in leads of an reference junction temperature using a
individual thermocouple compensating box, which you have looped into an
(see Figure 5-19 for connection) individual thermocouple.
No further processing is necessary owing to the
module.
External compensation with a You can acquire the reference temperature by RTD on
resistance thermometer to obtain means of a resistance thermometer (pt 100) and Channel 0
the reference junction temperature have it calculated by the module for any
(recommended method) thermocouple.
(see Figure 5-20 for connection)
External compensation with a Use a resistance thermometer on a module that RTD on
resistance thermometer when measures the reference junction temperature. Read Channel 0
thermocouples with the same in the climatic temperature value to the CPU and
reference junction are divided transfer the value to the other modules using
amongst several modules SFC55.
(see Figure 5-20 for connection)
Constant reference junction If the reference junction temperature is constant Reference
temperature (thermometer, ice bath; and known, you can specify this value in parameter temperature
see Figure 5-18 for connection) assignment in STEP 7. value

Theory of Operation of Internal Compensation

With internal compensation, you can establish the reference point across the
terminals of the analog input modules. In this case, you must run the compensating
lines right up to the analog module. The internal temperature sensor acquires the
temperature of the module and supplies a compensation voltage.
Note that internal compensation is not as accurate as external compensation.

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Analog Modules

Theory of Operation of External Compensation with Compensating Box

If you employ external compensation, the temperature of the reference junction of
the thermocouples is taken into account via a compensating box, for example.
The compensating box contains a bridge circuit calibrated for a definite reference
junction temperature. The reference junction is formed by the connections for the
ends of the thermocouple’s compensating leads.
If the actual temperature deviates from the compensating temperature, the
temperature-sensitive bridge resistance changes. This results in a positive or
negative compensating voltage, which is added to the thermo-e.m.f.

Abbreviations and Mnemonics Used in the Figures Below

The abbreviations and mnemonics used in the figures below have the following
meanings:
M +: Measuring line (positive)
M -- : Measuring line (negative)
IC+: Constant-current lead (positive)
IC-- : Constant-current lead (negative)

Note
The necessary connecting cables, which result from the potential connection of the
analog input module and the sensors, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.8 with
its generally applicable information for connecting sensors.

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Connection of Thermocouples without Compensation or Using the Reference

Temperature Value
Connect the thermocouples to the inputs of the module, either directly or by means
of compensating lines. Each channel can use a thermocouple type supported by
the analog module independently of the other channels.

M+
M--
M+
M--

Compensating leads
(same material as
thermocouple)

Figure 5-18 Connection of Thermocouples without Compensation or Using the Reference

Temperature Value to an Isolated AI

Connecting the Compensating Box

The compensating box is looped in in the leads of each thermocouple. The
compensating box must have an isolated supply. The power supply must have
adequate filtering, for example by means of a grounded shielding winding.
Each channel can use a thermocouple type supported by the analog module
independently of the other channels. Each channel requires its own compensating
box.

Note
Use compensating boxes with a reference junction temperature of 0 _C for
analog input modules.

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Recommended Compensating Box

We recommend you to use a comparison point (with integrated power supply unit)
from Siemens as a compensating box. You will find the necessary ordering data in
the table below.

Table 5-44 Ordering Data of the Comparison Point

Recommended Compensating Box Order Number

Reference junction with integrated power supply M72166-VVVVV
unit, for rail mounting

Auxiliary power 230 VAC B

1
110 VAC
B
24 VAC 2
24 VDC
B
3
Connection to thermocouple Fe-CuNi Type L B 1
Fe/Cu Ni Type J 4 2
Ni Cr/Ni Type K 3
Pt 10% Rh/Pt Type S 4
Pt 13% Rh/Pt Type R 5
Cu-CuNi Type U 6
Cu/Cu Ni Type T 7

Reference temperature 0 _C 0
0

Connecting to the Comparison Point (Order No. M72166-xxx00)

Compensating leads (same

material as thermocouple)
+ --
-- --
M+
Auxiliary power
+ + M--
M+
M--

Output
(Cu wires)

Figure 5-19 Connection of a Thermocouple with Reference Junction (Order No. M72166-xxx00) to an
Isolated AI

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Connecting Thermocouples and Resistance Thermometers

Connect the resistance thermometer to channel 0 of the module. Make sure that
you parameterize the “RTD on Channel 0“ reference junction in STEP 7 for each
channel that has a thermocouple connected to it.
If all thermocouples connected to the inputs of the module have the same
comparison point, you compensate as follows:

RTD on Channel 0

M+

Equalizing line (same M--

material as I C+
thermocouple) I C--
M+
M--
M+
M--

Reference
junction
Incoming line (Cu)

Figure 5-20 Connection of Thermocouples of the Same Type with External Compensation
by Means of a Resistance Thermometer, Connected to Channel 0

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5.13 Connecting Loads/Actuators to Analog Outputs

Introduction
You can use the analog output modules to supply loads and actuators with current
and voltage.
This section contains general information that is generally applicable to all the
connection options for loads and actuators described in the sections that follow.

Cables for Analog Signals

For the analog signals, you should use shielded and twisted pair cables. The cables
QV and S+ and M and S--, respectively, are to be twisted together. This reduces the
interference. Ground the screen of the analog cables at both ends of the cables.
If there are potential differences between the cable ends, an equipotential bonding
current, which can flow over the shield, can cause interference of the analog
signals. In such a case, you should ground the shield at one end of the cable only.

Isolated Analog Output Modules

With the isolated analog output modules there is no electrical connection between
the reference point of the measuring circuit MANA and chassis ground.
You must use isolated analog output modules if a potential difference UISO can
occur between the reference point of the measuring circuit MANA and chassis
ground. By means of an equipotential bonding conductor between the MANA
terminal and chassis ground, make sure that UISO does not exceed the permitted
value.

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5.14 Connecting Loads/Actuators to Voltage Outputs

Connecting Loads to a Voltage Output

Connecting loads to a voltage output is possible both in a four-conductor and a
two-conductor connection.

Note
The necessary connecting cables, which result from the potential connection of the
analog output module, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.13 with
its generally applicable information for connecting loads and actuators.

Abbreviations and Mnemonics Used in the Figures Below

The abbreviations and mnemonics used in the figures below have the following
meanings:
QV: Analog output voltage
S +: Detector lead (positive)
S --: Detector lead (negative)
MANA: Reference potential of analog circuit
R L: Load impedance
L +: Terminal for 24 VDC supply voltage
M: Ground terminal
UISO: Potential difference between MANA and chassis ground

Four-Conductor Connection of Loads to a Voltage Output

A high accuracy at the load can be achieved through the four-conductor
connection. You must therefore connect the sensor leads (S-- and S+) directly to
the load. The voltage is thus measured and corrected directly at the load.
Problems or a voltage drop can result in a potential difference between the sensor
lead S-- and the reference circuit of the analog circuit MANA. This potential
difference (UCM) must not exceed the permissible value. If the permissible potential
difference is exceeded, the accuracy of the analog signal is impaired.

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L+ +24 V

QV
S+ RL
S--
MANA

UISO
M
0V

Chassis ground

Figure 5-21 Connecting Loads to a Voltage Output of an Isolated AO over a

Four-Conductor Connection

Two-Conductor Connection of Loads to a Voltage Output

In the case of a two-conductor connection, connect QV to S+ and MANA to S-- on
the front connector. However, this will not produce the accuracy of a four-conductor
connection.
Connect the load to terminals QV and to the reference point of the measuring
circuit MANA of the module.

L+ +24 V

QV
S+ RL
S--
MANA

UISO
M
0V

Chassis ground

Figure 5-22 Two-Conductor Connection of Loads to a Voltage Output of an Isolated AO

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5.15 Connecting Loads/Actuators to Current Outputs

Note
The necessary connecting cables, which result from the potential connection of the
analog output module, are not drawn in the figures shown below.
In other words, you must continue to take note of and implement Section 5.13 with
its generally applicable information for connecting loads/actuators.

Abbreviations and Mnemonics Used in the Figure Below

The abbreviations and mnemonics used in the figure below have the following
meanings:
Q I: Analog output current
MANA: Reference potential of analog circuit
R L: Load impedance
L +: Terminal for 24 VDC supply voltage
M: Ground terminal
UISO: Potential difference between MANA and chassis ground

Connecting Loads to a Current Output

You must connect loads to QI and the reference point of the analog circuit MANA of
a current output.

L+ +24 V

QI

RL
MANA

UISO

M
0V

Chassis ground

Figure 5-23 Connecting Loads to a Current Output of an Isolated AO

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5.16 Diagnostics of the Analog Modules

Programmable and Non-Programmable Diagnostic Messages

In diagnostics, we make a distinction between programmable and
non-programmable diagnostic messages.
You obtain programmable diagnostic messages only if you have enabled
diagnostics by parameter assignment. You perform parameter assignment in the
“Diagnostics” parameter block in STEP 7 (refer to Section 5.7).
Non-programmable diagnostic messages are always made available by the analog
module irrespective of diagnostics being enabled.

Actions Following Diagnostic Messages in STEP 7

Each diagnostic message leads to the following actions:
• The diagnostic message is entered in the diagnosis of the analog module,
forwarded to the CPU and can be read out by the user program.
• The error LED on the analog module lights.
• If you have enabled diagnostic interrupts in STEP 7, a diagnostic interrupt is
triggered and OB 82 is called (refer to Section 4.5).

Reading out Diagnostic Messages

You can read out detailed diagnostic messages by means of SFCs in the user
program (refer to the Appendix “Diagnostic Data of Signal Modules”).
You can view the cause of the error in STEP 7 in the module diagnosis
(refer to the STEP 7 online help system).

Diagnostic Message in the Measured Value of Analog Input Modules

Every analog input module supplies the measured value 7FFFH irrespective of the
parameter assignment when an error is detected. This measured value means
either Overflow, Malfunction or a channel is disabled.

Diagnostic Message via the INTF and EXTF LEDs

Some analog input modules indicate faults by means of their two fault LEDs INTF
(internal fault) and EXTF (external fault). The LEDs go out when all the internal and
external faults have been eliminated.
Refer to the technical specifications of the modules, starting at Section 5.18, to find
out which analog input modules have these fault LEDs.

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Diagnostic Messages of the Analog Input Modules

The table below gives an overview of the diagnostic messages for the analog input
modules with diagnostics capability.
You can find out which diagnostic messages are possible with which modules in
the Appendix entitled “Diagnostic Data of the Signal Modules”.

Table 5-45 Diagnostic Messages of the Analog Input Modules

Diagnostic Message LED Diagnostics Parameters Can
Effective for Be Assigned
Module problem INTF/EXTF Module No
Internal malfunction INTF Module No
External malfunction EXTF Module No
Channel error present INTF/EXTF Module No
External auxiliary supply missing EXTF Module No
Front connector missing EXTF Module No
Module not configured. INTF Module No
Wrong parameters INTF Module No
Channel information available INTF/EXTF Module No
Coding key incorrect or missing INTF Module No
Thermocouple connection fault EXTF Module No
STOP operating mode -- Module No
EPROM error INTF Module No
RAM error INTF Module No
ADC/DAC error INTF Module No
Hardware interrupt lost INTF Module No
Configuring/parameter INTF
Channel No
assignment error
Short-circuit to M EXTF Channel Yes
Wire break EXTF Channel Yes
Reference channel error EXTF Channel Yes
Underflow EXTF Channel Yes
Overflow EXTF Channel Yes
User connection not wired EXTF Channel No
Open conductor in + direction EXTF Channel No
Open conductor in -- direction EXTF Channel No
Run time calibration error EXTF Channel No
Underrange or overrange EXTF Channel No
Open conductor in the current EXTF Channel No
source
User calibration doesn’t EXTF Channel No
correspond to the parameter
assignment

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Note
A prerequisite for detecting the errors indicated by programmable diagnostic
messages is that you must have assigned parameters to the analog module
accordingly in STEP 7.

Causes of Errors and Remedial Measures for Analog Input Modules

Table 5-46 Diagnostics Messages of the Analog Input Modules, Causes of Errors and Remedial
Measures

Diagnostics Possible Error Cause Remedy

Message
Module malfunction An error detected by the module --
has occurred
Internal malfunction The module has detected an error --
within the programmable controller
External malfunction The module has detected an error --
outside the programmable controller
There is a channel Indicates that only certain channels --
error are faulty
No external auxiliary Load voltage to supply the 2-wire Feed supply L+
voltage transmitter is missing on terminals
L+ and M
No front connector Jumper between connections 1 and Install jumper
2 in the front connector missing
Parameters have not The module requires the information Message queued after power-on until
been assigned to the as to whether it should work with parameter transmission by the CPU has
module system default parameters or with been completed; parameterize the
your parameters module, as required
Wrong parameters A parameter or combination of Reassign module parameter
parameters is incorrect;
impermissible measurement range,
for example
Channel information Channel error present; the module --
available can supply additional channel
information
Measuring range One or more measuring range Insert the measuring range modules on the
module modules is missing or incorrectly module according to the parameter
incorrect/missing inserted assignment of the type of measurement
and the measurement range
STOP operating mode Module not configured and the first If a reboot of the CPU all the digitized
module cycle not completed analog values are in the intermediate
memory, this message is reset
EPROM error The module is defective Replace module
RAM error
ADC/DAC error

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Table 5-46 Diagnostics Messages of the Analog Input Modules, Causes of Errors and Remedial
Measures, continued

Diagnostics Possible Error Cause Remedy

Message
Hardware interrupt lost The module cannot send an Change interrupt handling in the CPU
interrupt, since the previous (change priority for interrupt OB; shorten
interrupt was not acknowledged; interrupt program)
configuration error possible
Configuring/parameter Illegal parameters transferred to Check measuring range module
assignment
i t error module
d l
Reassign module parameter
Short circuit to M A short circuit to the M potential has Eliminate short circuit
occurred on the sensor supply of
two-wire transmitters
Wire break Resistance too high in the sensor Use different type of sensor or
connection connection, e.g. use conductors with a
larger cross-sectional core area
Open circuit between module and Close circuit
sensor
Channel not connected (open) Disable channel (“Measuring Type”
parameter)
Connect channel
Reference channel The reference junction connected at Check terminals
error channel 0 is faulty due to a wire
break, for example
The reference temperature value Reparameterize the reference
transferred is not within the value temperature
range
Underflow Input value violates underrange,
error may be caused:
Wrong measuring range selected Configure other measuring range
With the measuring ranges 4 to Check terminals
20 mA and 1 to 5 V, if necessary by
polarity reversal of sensor
connection
Overflow Input value overflows overrange Configure other measuring range
Run time calibration A wiring fault has occurred on a Eliminate the wiring fault (fault remains
error channel during the calibration cycle until the next calibration; in other words,
a maximum 6 minutes or until there is a
STOP-RUN transition of the CPU)

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5.17 Analog Module Interrupts

Introduction
In this Section, the interrupt behavior of the analog modules is described. The
following interrupts exist:
• Diagnostic Interrupt
• Hardware interrupt
Note that not all analog modules have interrupt capability or they are only capable
of a subset of the interrupts described here Refer to the technical specifications of
the modules, starting at Section 5.18, to find out which analog modules have
interrupt capability.
The OBs and SFCs mentioned below can be found in the online help system for
STEP 7, where they are described in greater detail.

Enabling Interrupts
The interrupts are not preset -- in other words, they are inhibited without
appropriate parameter assignment. You enable interrupts in STEP 7
(refer to Section 5.7).

Special Feature: The Module is Inserted in ER-1/ER-2

Note
If you use the analog module in ER-1/ER-2, you must set the parameters for the
input of all the interrupts to “No” because the interrupt lines are not available in
ER-1/ER-2.

Diagnostic Interrupt
If you have enabled diagnostic interrupts, then active error events (initial
occurrence of the error) and departing error events (message after troubleshooting)
are reported by means of an interrupt.
The CPU interrupts the execution of the user program and processes the
diagnostic interrupt block (OB 82).
In the user program, you can call SFC 51 or SFC 59 in OB 82 to obtain more
detailed diagnostic information from the module.
The diagnostic information is consistent until such time as OB 82 is exited. When
OB 82 is exited, the diagnostic interrupt is acknowledged on the module.

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Hardware Interrupt with Trigger “Upper or Lower Limit Exceeded”

Define a working range by setting parameters for an upper and lower limit value. If
the process signal (for example, the temperature) leaves this working range, the
module triggers a hardware interrupt, provided the interrupt is enabled.
The CPU interrupts execution of the user program and processes the hardware
interrupt block (OB 40).
In the user program of OB 40, you can set how the programmable controller is
required to react to a limit value being surpassed or not being reached.
When OB 40 is exited, the hardware interrupt is acknowledged on the module.

Note
Note that a hardware interrupt is not triggered if you have set the upper limit above
the overrange or the lower limit below the underrange.

Structure of the Start Information Tag OB40_POINT_ADDR of OB 40

The limit values exceeded by the different channels are entered in the start
information of OB 40 in the tag OB40_POINT_ADDR. The following figure shows
the assignment to the bits of local data double word 8.

LB 8 LB 9 LB 11
.1 .0
31 30 29 28 27 26 25 24 17 16 1 0 Bit no.
1 1 1 1 LD 8

Value falls below lower limit for channel 0

Value falls below lower limit for channel 1
Value exceeds upper limit for channel 0
Value exceeds upper limit for channel 1

Figure 5-24 Start Information of OB 40: Which Event Triggered the Hardware Interrupt at the Limit Value

Hardware Interrupt on Trigger “Reached End of Scan Cycle”

By parameterizing the hardware interrupt a the end of the scan cycle, you have the
option of synchronizing a process with the scan cycle of the analog input module.
A scan cycle includes the conversion of the measured values of all enabled
channels of the analog input module. The module processes the channels one
after the other. After all the measured values have been converted, the module of
the CPU reports by means of an interrupt that there are new measured values on
all channels.
You can use the interrupt to load the currently converted analog values.

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5.18 Analog Input Module SM 431; AI 8 x 13 Bit;

(6ES7431-1KF00-0AB0)

Characteristics
The analog input module SM 431; AI 8 x 13 Bit has the following features:
• 8 inputs for voltage/current measurement
• 4 inputs for resistance measurement
• Various measurement ranges, can be adjusted in parallel
• 13-bit resolution
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the reference potential of the connected sensors and MANA is 30 VAC

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Block Diagram of the SM 431; AI 8 x 13 Bit

MV0+
MI0+
MI0+

M0--

Suppressor circuit, current jumpering

D
CH0
Bus S7-400

CH1 CH1

Bus control
A

CH7 CH7

Front
connector
F_CON
monitoring
+5V
+5V
M ANA Bus S7-400
0V 0V
Bus S7-400
--5V

Figure 5-25 Block Diagram of the SM 431; AI 8 x 13 Bit

Warning
! The module can be damaged.
The shunt of an input channel can be destroyed if you inadvertently connect a
voltage sensor to the M-- /MI+ terminals of a channel.
Make sure that the front connector wiring corresponds to the following terminal
assignment diagram.

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Terminal Assignment Diagram of the SM 431; AI 8 x 13 Bit

Voltage Current measure- Resistance mea-

measurement ment surement

1
2
3
4
5
6 MV0+ MV0+ M0+
7 V MI0+
CH0 Word 0 CH0
8 MI0+
9 M0-- M0-- M0--
10 CH0 Word 0
11 MV1+ MV1+ IC0+
12 MI1+
CH1 Word 2 CH1
13 A
MI1+
14 M1-- M1-- IC0--
15
16 MV2+ MV2+ M1+
17 MI2+
CH2 Word 4 CH2
18 MI2+
19 M2-- M2-- M1--
20 CH2 Word 4
21 MV3+ MV3+ IC1+
22 MI3+
23 CH3 Word 6 CH3
MI3+
24 M3-- M3-- IC1--
25 MANA
26 M ANA
27
28 MV4+ MV4+ M2+
29 V MI4+
CH4 Word 8 CH4
30 MI4+
31 M4-- M4-- M2--
32 CH4 Word 8
33 MV5+ MV5+ IC2+
34 MI5+
35 CH5 Word 10 CH5
A MI5+
36 M5-- M5-- IC2--
37
38 MV6+ MV6+ M3+
39 MI6+
CH6 Word 12 CH6
40 MI6+
41 M6-- M6-- M3--
42
CH6 Word 12
43 MV7+ MV7+ IC3+
44 MI7+
45 CH7 Word 14 MI7+ CH7
46 M7-- M7-- IC3--
47
48

Figure 5-26 Terminal Assignment Diagram of the SM 431; AI 8 x 13 Bit

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Technical Specifications of the SM 431; AI 8 x 13 Bit

Dimensions and Weight Suppression of Interference, Limits of Error

Dimensions W x H x D 25 x 290 x 210 Interference voltage suppression for f = nx (f1 1%),
(in millimeters) (f1 = interference frequency) n = 1, 2, ...
Weight Approx. 500 g • Common-mode > 100 dB
Data for Specific Module interference
(UCM < 30 V)
Number of inputs 8
• Series-mode interference > 40 dB
• For resistance-type sensor 4 (peak value of
Length of cable interference < rated value
• Shielded max. 200 m of input range)
Voltages, Currents, Potentials Crosstalk between the inputs > 50 dB
Rated load voltage L+ Not required Operational limit (in the entire temperature range, with
Constant measured current for Typ. 1.67 mA reference to the input range)
resistance-type sensor • Voltage input
Isolation -- 1V  1.0%
• Between channels and Yes --  10 V  0.6%
backplane bus -- 1 V to 5 V  0.7%
• Between the channels No • Current input
Permitted potential difference --  20 mA  1.0%
• Between inputs and MANA 30 VAC -- 4 mA to 20 mA  1.0%
(UCM)
• Resistance measurement  1.25%
• Between the inputs (ECM) 30 VAC 0 to 500 Ω; four-conductor
• Between MANA and 75 VDC / 60 VAC measurement (in the range
Minternal (UISO) of 600Ω)
Insulation tested with Basic error (operational limit at 25 °5C, referred to input
• Between bus and analog range)
section 2120 VDC • Voltage input
• Between bus and chassis 500 VDC -- 1V  0.7%
ground --  10 V  0.4%
• Between analog section 2120 VDC -- 1 V to 5 V  0.5%
and chassis ground
• Current input
Current consumption
--  20 mA  0.7%
• From the backplane bus Max. 350 mA
-- 4 mA to 20 mA  0.7%
Power dissipation of the Typ. 1.8 W
module
• Resistance measurement  0.8%
0 to 500 Ω; four-conductor
Analog Value Generation measurement (in the range
Measuring principle Integrative of 600Ω)
Integration time/conversion (Does not go into the Temperature error with reference to the input range
time/resolution (per channel) response time) • In the resistance  0.02% K
• Parameters can be Yes measurement range
assigned • In all the other  0.007% K
• Interference voltage 60/50 measurement ranges
suppression f1 in Hz Linearity error (with reference  0.05% K
• Integration time in 16.7/20 to the input range)
milliseconds Repeat accuracy (in the steady  0.1%
• Basic conversion time in 23/25 state at 25 °C, referred to the
ms input range)
• Resolution including sign 13/13 Bit
Smoothing of the measured Not possible
values
Basic execution time of the 184/200
module, in ms (all channels
enabled)

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Status, Interrupts, Diagnostics Connection of the signal

Interrupts None sensors
Diagnostic functions None • For measuring voltage Possible
Substitute value can be applied No • For measuring current
Data for Selecting a Sensor -- As two-wire Possible; with external
transmitter transmitter supply
Input range (rated values)/input
resistance -- As four-wire Possible
transmitter
• Voltage  1 V/200 kΩ
 10 V/200 kΩ
• For measuring resistance
-- With two-conductor Possible; cable
1 V to 5 V/200 kΩ terminal resistance is also
• Current  20 mA/80 Ω
-- With three-conductor measured
4 mA to 20 mA/80 Ω terminal
• Resistors 0 to 600 Ω; of use up -- With four-conductor Possible
to 500 Ω terminal
Maximum input current for 40 mA continuous
current input (destruction limit)

5.18.1 Commissioning the SM 431; AI 8 x 13 Bit

You set the mode of operation of the SM 431; AI 8 x 13 Bit in STEP 7.

Parameters
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-47 Parameters of the SM 431; AI 8 × 13 Bit

Parameter Value Range Default1) Parameter Scope

Type
Measurement
• Measuring Disabled U
method U Voltage
4DMU Current (4-wire transmitter)
2DMU Current (2-wire transmitter)
R-4L Resistance (four-conductor Static Channel
connection)
• Measuring Refer to Section 5.18.2 for the measuring 10 V
range ranges of the input channels that you can
set.
• Interference 60 Hz; 50 Hz 50 Hz
suppression
1) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

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5.18.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 8 x 13 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Resistance test
You perform the setting with the “Measuring Type” parameter in STEP 7.

Wiring for Resistance Measurement

The following conditions apply when measuring the resistance with the SM 431;
AI 8 x 13 Bit:

Table 5-48 Channels for Resistance Measurement of the SM 431; AI 8 × 13 Bit

Measuring Type Permissible Condition

Parameter for Channel n
Resistance 0, 2, 4 or 6 You must disable the “Measuring Type” parameter for
(four-conductor channels n+1 (1, 3, 5, 7).
connection) The reason: The connections of channel n+1 are used to
supply the resistance that is connected to channel n.

Unused Channels
Unused channels can be left open. You can improve the noise immunity of the
module in a measuring environment with serious interference by short-circuiting the
channels and connecting to MANA. Disable the “Measuring Type” parameter for
unused channels. In this way you shorten the scan time of the module.

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Measuring Ranges
You set the measuring ranges by means of the “Measuring Range” parameter in
STEP 7.

Table 5-49 Measuring Ranges of the SM 431; AI 8 x 13 Bit

Method Selected Measuring Description

Range
U: Voltage ±1V You will find the digitized analog values in
1 to 5 V Section 5.3.1 in the voltage measuring
± 10 V range
2DMU: Current (two-wire 4 to 20 mA You will find the digitized analog values in
transmitter) Section 5.3.1 in the current measuring
range
4DMU: Current 4 to 20 mA You will find the digitized analog values in
(four-wire transmitter)  20 mA Section 5.3.1 in the current measuring
range
R-4L: Resistance 600 Ω You will find the digitized analog values in
(four-conductor Section 5.3.1 in the resistance measuring
connection) range

Default Settings
The default measuring method of the module is “Voltage”, at a range of “ 10 V”.
You can use this combination of measuring method and measuring range without
parameterizing the SM 431; AI 8 x 13 bit in STEP 7.

5.19 Analog Input Module SM 431; AI 8 x 14 Bit;

(6ES7431-1KF10-0AB0)

Characteristics
The analog input module SM 431; AI 8 x 14 Bit has the following features:
• 8 inputs for voltage/current measurement
• 4 inputs for resistance and temperature measurement
• Various measuring ranges, adjustable in parallel
• 14-bit resolution
• Particularly suitable for measuring temperatures
• Parameter can be assigned to temperature sensor types
• Linearization of the sensor characteristic curves
• Supply voltage 24 VDC required only for the connection of 2-wire transmitters
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the channel and the central ground point is120 VAC

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Block Diagram of the SM 431; AI 8 x 14 Bit

CH0 Meas.
range
CH1 module 0

Bus S7-400

Bus control
A

MULTIPLEXER
OPTO RELAY
CH6 Meas.
range
CH7 module 3

+ 5V ENABLE
+ 15V +5V Bus S7-400
L+
M 0V 0V Bus S7-400
-- 15V

Figure 5-27 Block Diagram of the SM 431; AI 8 x 14 Bit

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Analog Modules

Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit

Thermocouples Resistance measurement

Voltage measurement Resistance thermometer
Current measurement
1
2
3
L+ L+
4
5
6 M0+ CH0 Word 0 M0+
7 M0-- M0--
8
9 CH0 Word 0
10
11 V
M1+ CH1 Word 2 IC0+
12 M1-- IC0--
13
14
15
16 M2+ CH2 Word 4 M1+
17 M2-- M1--
18
19 CH2 Word 4
20
21 M3+ CH3 Word 6 IC1+
22 M3-- IC1--
23
24
25
26
27
28 V
M4+ CH4 Word 8 M2+
29 M4-- M2--
30
31 CH4 Word 8
32
33 V M5+ CH5 Word 10 IC2+
34 M5-- IC2--
35
36
37
38 M6+ Word 12 M3+
Tr CH6
39 M6-- M3--
40
41 CH6 Word 12
42
43 Tr
M7+ CH7 Word 14 IC3+
44 M7-- IC3--
45
46
47
M M M
48

Figure 5-28 Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit

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Technical Specifications of the SM 431; AI 8 x 14 Bit

Dimensions and Weight Current consumption

Dimensions W x H x D 25 x 290 x 210 • From the backplane bus Max. 600 mA
(in millimeters) • From the backplane bus L+ Max. 200 mA (with 8
Weight Approx. 500 g connected, fully
Data for Specific Module controlled two-wire
transmitters)
Number of inputs 8
Power dissipation of the Typ. 3.5 W
• For resistance-type sensor 4
module
Length of cable
Analog Value Generation
• Shielded Max. 200 m
Measuring principle Integrative
in the 80 mV input range Max. 50 m
and with thermocouples Integration time/conversion (Does not go into the
time/resolution (per channel) response time)
Voltages, Currents, Potentials
Rated load voltage L+ 24 VDC (required only
• Parameters can be Yes
assigned
for the supply of
two-wire transmitters) • Interference voltage 60/50
suppression f1 in Hz
• Reverse polarity protection Yes
Power supply of the
• Integration time in 16.7/20
milliseconds
transmitters
• Supply current max. 50 mA
• Basic conversion time in 20.1/23.5
ms
• Short-circuit proof Yes
• Additional conversion time 40.2/47
Typ. 1.67 mA for measuring resistance in
Constant measured current for ms
resistance-type sensor
• Additional conversion time 4.3/4.3
Isolation for open-circuit monitoring
• Between channels and Yes in ms
backplane bus • Additional conversion time 5.5/5.5
• Between the channels No for measuring resistance
• Between channels and Yes in ms
load voltage L+ • Resolution including sign 14/14 bit
Permitted potential difference -- Smoothing activated 16/16 bit
• Between inputs and MANA 120 VAC Smoothing of the measured Parameters can be
(UCM) values assigned in 4
• Between the inputs (ECM) 120 VAC stages
• Between MANA and 75 VDC / 60 VAC Basic execution time of the 161/188
Minternal (UISO) module, in ms (all channels
enabled)
Insulation tested with
• Between bus and L+/M 2120 VDC
• Between bus and analog
section 2120 VDC
• Between bus and chassis 500 VDC
ground
• Between analog section 707 VDC
and L+/M
• Between analog section 2120 VDC
and chassis ground
• Between L+/M and chassis 2120 VDC
ground

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Suppression of Interference, Limits of Error • Thermocouples

Interference voltage suppression for f = nx (f1 1%), -- TC type B  14.8 K
(f1 = interference frequency) n = 1, 2, ... -- TC type R  9.4 K
• Common-mode > 100 dB -- TC type S  10.6 K
interference
(UCM < 120 Vss) -- TC type T  2.2 K
• Series-mode interference > 40 dB -- TC type E  4,0 K
(peak value of interference -- TC type J  5.2 K
< rated value of input -- TC type K  7.6 K
range)
-- TC type U  3.5 K
Crosstalk between the inputs >70 dB
-- TC type L  5.1 K
Operational limit (in the entire temperature range, with
reference to the input range) -- TC type N  5.5 K
• Voltage input • Resistance thermocouples, four-conductor
standard measuring range
--  80 mV  0.38%
-- Pt 100  4.6 K
--  250 mV  0.35%
-- Pt 200  5.7 K
--  500 mV  0.35%
-- Pt 500  4.6 K
-- 1V  0.35%
-- Pt 1000  3.7 K
--  2.5 V  0.35%
-- Ni 100  0.9 K
-- 5V  0.35%
-- Ni 1000  0.9 K
-- 1 V to 5 V  0.35%
Climatic measuring range
--  10 V  0.35%
-- Pt 100  0.5 K
• Current input
-- Pt 200  0.5 K
-- 0 ... 20 mA  0.35%
-- Pt 500  0.5 K
--  20 mA  0.35%
-- Pt 1000  0.5 K
-- 4 mA to 20 mA  0.35%
-- Ni 100  0.9 K
• Resistance test
-- Ni 1000  0.9 K
-- 0 to 48 Ω;  0.35%
four-conductor • Resistance thermocouples, three-conductor
measurement standard measuring range
-- 0 to 150 Ω,  0.35% -- Pt 100  5.2 K
four-conductor -- Pt 200  8.2 K
measurement
-- Pt 500  6.5 K
-- 0 to 300 Ω,  0.35%
-- Pt 1000  5.2 K
four-conductor
measurement -- Ni 100  1.3 K
-- 0 to 600 Ω;  0.35% -- Ni 1000  1.3 K
four-conductor Climatic measuring range
measurement
-- Pt 100  0.7 K
-- 0 to 5000 Ω;  0.35%
-- Pt 200  0.7 K
four-conductor
measurement (in -- Pt 500  0.7 K
the range of -- Pt 1000  0.7 K
6000 Ω)
-- Ni 100  1.3 K
-- 0 to 300 Ω;  0.5%
-- Ni 1000  1.3 K
three-conductor
measurement
-- 0 to 600 Ω;  0.5%
three-conductor
measurement
-- 0 to 5000 Ω;  0.5%
three-conductor
measurement (in
the range of
6000 Ω)

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Basic error (operational limit at 25 °C, referred to input • Resistance thermocouples, four-conductor
range) standard measuring range
• Voltage input -- Pt 100  2.0 K
--  80 mV  0.17% -- Pt 200  2.5 K
--  250 mV  0.15% -- Pt 500  2.0 K
--  500 mV  0.15% -- Pt 1000  1.6 K
-- 1V  0.15% -- Ni 100  0.4 K
--  2.5 V  0.15% -- Ni 1000  0.4 K
-- 5V  0.15% Climatic measuring range
-- 1 V to 5 V  0.15% -- Pt 100  0.2 K
--  10 V  0.15% -- Pt 200  0.2 K
• Current input -- Pt 500  0.2 K
-- 0 mA to 20 mA  0.15% -- Pt 1000  0.2 K
--  20 mA  0.15% -- Ni 100  0.4 K
-- 4 ... 20 mA  0.15% -- Ni 1000  0.4 K
• Resistance test • Resistance thermocouples, three-conductor
-- 0 to 48 Ω;  0.15% standard measuring range
four-conductor -- Pt 100  3.1 K
measurement
-- Pt 200  4.9 K
-- 0 to 150 Ω,  0.15%
-- Pt 500  3.9 K
four-conductor
measurement -- Pt 1000  3.1 K
-- 0 to 300 Ω,  0.15% -- Ni 100  0.8 K
four-conductor -- Ni 1000  0.8 K
measurement
Climatic measuring range
-- 0 to 600 Ω;  0.15%
-- Pt 100  0.4 K
four-conductor
measurement -- Pt 200  0.4 K
-- 0 to 5000 Ω;  0.15% -- Pt 500  0.4 K
four-conductor -- Pt 1000  0.4 K
measurement (in
-- Ni 100  0.8 K
the range of
6000 Ω) -- Ni 1000  0.8 K
-- 0 to 300 Ω;  0.3% Temperature error (with  0.004% K
three-conductor reference to the input range)
measurement Linearity error (with reference  0.01% K
-- 0 to 600 Ω;  0.3% to the input range)
three-conductor Repeat accuracy (in the steady  0.1%
measurement state at 25 °C, referred to the
-- 0 to 5000 Ω;  0.3% input range)
three-conductor
measurement (in
the range of
6000 Ω)
• Thermocouples
-- TC type B  8.2 K
-- TC type R  5.2 K
-- TC type S  5.9 K
-- TC type T  1.2 K
-- TC type E  1.8 K
-- TC type J  2.3 K
-- TC type K  3.4 K
-- TC type U  1.8 K
-- TC type L  2.3 K
-- TC type N  2.9 K

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Analog Modules

Status, Interrupts, Diagnostics Connection of the sensor

Interrupts None • For measuring voltage Possible
Diagnostic functions None • For measuring current
Substitute value can be applied No -- As two-wire transmitter Possible
Data for Selecting a Sensor -- As four-wire Possible
Input range (rated values)/Input transmitter
resistance • For measuring resistance
• Voltage  80 mV/1 MΩ -- With two-conductor Possible; cable
 250 mV/1 MΩ terminal resistance is also
 500 mV/1 MΩ measured
 1 V/1 MΩ -- With three-conductor Possible
 2.5 V/1 MΩ terminal
 5 V/1 MΩ
-- With four-conductor Possible
1 to 5 V/1 MΩ
terminal
 10 V/1 MΩ
• Current 0 to 20 mA/50 Ω
• Load of the two-wire Max. 750 Ω
transmitter
 20 mA/50 Ω
4 to 20 mA/50 Ω Characteristic linearization Parameters can be
assigned
• Resistors 0 to 48 Ω/1 MΩ
0 to 150 Ω/1 MΩ • For thermocouples Types B, R, S, T, E, J,
0 to 300 Ω/1 MΩ K, U, L, N
0 to 600 Ω/1 MΩ • For Pt 100, Pt 200, Pt 500,
0 to 6000 Ω/1 MΩ resistance thermometers Pt 1000, Ni 100,
(can be used up to Ni 1000
5000 Ω) Temperature compensation Yes, programmable
• Thermocouples TC type B/1 MΩ • Internal temperature No
TC type R/1 MΩ compensation
TC type S/1 MΩ • External temperature Possible
TC type T/1 MΩ compensation with
compensating box
TC type E/1 MΩ
• External temperature Possible
TC type J/1 MΩ compensation with Pt 100
TC type K/1 MΩ • Compensation for Possible
TC type U/1 MΩ definable reference
junction
TC type L/1 MΩ
temperature
TC type N/1 MΩ
Unit for temperature Degrees Celsius
• Resistance thermometer Pt 100/1 MΩ measurement
Pt 200/1 MΩ
Pt 500/1 MΩ
Pt 1000/1 MΩ
Ni 100/1 MΩ
Ni 1000/1 MΩ
Maximum input voltage for Max. 18 V continuous
voltage input (destruction limit) 75 V for 1 ms (cycle
factor 1 : 20)
Maximum input current for 40 mA continuous
current input (destruction limit)

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5.19.1 Commissioning the SM 431; AI 8 x 14 Bit

You set the mode of operation of the SM 431; AI 8 x 14 Bit by means of measuring
range modules on the module and in STEP 7.

Measuring Range Module

A measuring range module of the module matches two channels and one
resistance channel to each type of sensor. If necessary, the measuring range
modules must be replugged to change the measuring method and the measuring
range. The steps you have to perform to do this are described in detail in
Section 5.4.
The corresponding table in Section 5.19.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.

Parameter
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-50 Parameters of the SM 431; AI 8 x 14 Bit

Parameter Value Range Default1) Parameter Scope

Type
Diagnostics
• Wire break Yes/no No Static Channel
Measurement
• Measuring type Disabled
U Voltage
4DMU Current (four-wire transmitter) U
2DMU Current (two-wire transmitter)
R-4L Resistance (four-conductor
terminal)
R-3L Resistance (three-conductor
terminal)
RTD-4L Thermal resistor Static Channel
(linear, four-conductor terminal)
RTD-3L Thermal resistor
(linear, three-conductor
terminal)
TC-L Thermocouple (linear)
• Measuring Refer to Section 5.19.2 for the  10 V
range measuring ranges of the input channels
that you can set.
• Reference --273.15 to 327.67 oC 0,00 oC
Dynamic Module
Temperature
• Interference 60 Hz; 50 Hz 50 Hz
Static Channel
suppression

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Table 5-50 Parameters of the SM 431; AI 8 x 14 Bit, continued

Parameter Value Range Default1) Parameter Scope

Type
• Smoothing None None
Low
Static Channel
Average
High
• Ref. junction None None
RTD on Channel 0
Reference temperature value dynamic
1) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

Smoothing of the Measured Values

You fill find information that is generally applicable to the smoothing of analog
values in Section 5.6.
The following figure indicates for the module in the case of a step response the
number of module cycles after which the smoothed analog value applies at almost
100%, depending on the smoothing setting. The figure applies to every change of
signal at an analog input.

Step response for any analog input signal

Signal variation
in percent
100

63

50

0 50 100 150 200

Smoothing: low:
Module cycles
average:
high:
Figure 5-29 Step Response of the SM 431; AI 8 x 14 Bit

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5.19.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 8 x 14 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Resistance test
• Temperature measurement
You specify the setting by means of the measuring range modules on the module
and by means of the “Measuring Type” parameter in STEP 7.

Circuit Variants for the Channels

Two channels are set with each measuring range module. There are therefore
restrictions as regards the measuring method for the adjacent channels 0/1, 2/3,
4/5 and 6/7, as shown in the following table:
Table 5-51 Selection of the Measuring Method for Channel n and Channel n+1 of the SM 431;
AI 8 x 14 Bit
Meas. Method Disa- Voltage Current Current R-4L R-3L RTD-4L RTD-3L TC-L
Chan. n+1
bled 4-DMU 2-DMU
Meas. Method
Channel n

Disabled x x x x x
Voltage x x x
Current four-wire x x
transmitter
Current two-wire x x
transmitter
Resistor x
four-conductor
Resistor x
three-conductor
Thermal resistor x
four-conductor
Thermal resistor x
three-conductor
Thermocouples x x x

Example
If you select “current (two-wire transmitter)” for channel 6, you can then only
deactivate the measuring method or set “current (two-wire transmitter)” for
channel 7.

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Wiring for Resistance and Temperature Measurement

The following conditions apply when measuring the resistance and temperature
with the SM 431; AI 8 x 14 Bit:

Table 5-52 Channels for Resistance and Temperature Measurement with the SM 431; AI 8 x 14 Bit

Measuring Type Parameter Permissible Condition

for Channel n
Resistor 0, 2, 4 or 6 You must disable the “Measuring Type” parameter for
(four-conductor terminal) channels n+1 ((1,, 3,, 5,, 7).
)
Resistor 0, 2, 4 or 6 The reason The connections of channel n+1 are used
(three-conductor terminal) to supply the resistance that is connected to
channel n.
n
Thermal resistor 0, 2, 4 or 6
(linear, four-conductor termi-
nal)
Thermal resistor 0, 2, 4 or 6
(linear, four-conductor termi-
nal)

Wiring for Junction Compensation for Thermocouples

If you select “RTD on Channel 0” as a reference junction for reference junction
compensation for thermocouples, the following applies:
Table 5-53 Thermocouple with Reference Junction Compensation via RTD on Channel 0
Reference Junction Permissible Condition
Parameter for
Channel n
RTD on Channel 0 2 to 7 You must connect and parameterize on channel 0 a
resistance thermometer with linearization, a 3-- or
4-conductor connection in the climatic range (channels
0 and 1 are thus assigned).
The reason: If channel 0 is to be used as the reference
junction, a resistance-type sensor must be connected
there to record absolute temperatures in the climatic
range.

Unused Channels
Unused channels can be left open. Set the measuring range module to position
“A”. You can improve the noise immunity of the module in a measuring environment
with serious interference by short-circuiting the channels.
Disable the “Measuring Type” parameter for unused channels. In this way you
shorten the scan time of the module.

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Measuring Ranges
You set the measuring ranges by means of the measuring range modules on the
module and the “Measuring Type” parameter in STEP 7.

Table 5-54 Measuring Ranges of the SM 431; AI 8 x 14 Bit

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
U: Voltage  80 mV A You will find the digitized analog
 250 mV values in Section 5.3.1 in the
voltage measuring range
 500 mV
1V
 2.5 V
5V
1 to 5 V
 10 V
2DMU: Current (two-wire 4 to 20 mA D To supply these transmitters with
transmitter) current you must connect 24 V to
the L+ and M front connector
terminals.
You will find the digitized analog
values in Section 5.3.1 in the
current measuring range
4DMU: Current 0 to 20 mA C You will find the digitized analog
(four-wire transmitter) 4 to 20 mA values in Section 5.3.1 in the
current measuring range
 20 mA
R-4L: Resistors 48Ω A You will find the digitized analog
(four-conductor 150 Ω values in Section 5.3.1 in the
connection) resistance measuring range
300 Ω
600 Ω
6000 Ω
R-3L: Resistors 300 Ω
(three-conductor 600 Ω
connection) 6000 Ω

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Analog Modules

Table 5-54 Measuring Ranges of the SM 431; AI 8 x 14 Bit, continued

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
TC-L: Thermocouple Type B A You will find the digitized analog
(linear) Type N values in Section 5.3.1 in the
(temperature temperature range
Type E
measurement)
Type R
Type S
Type J
Type L
Type T
Type K
Type U
RTD-4L: thermal resistor Pt 100 climatic A
(linear, four-conductor Pt 200 climatic
connection) Pt 500 climatic
(temperature
Pt 1000 climatic
measurement)
Ni 100 climatic
Ni 1000 climatic
RTD-3L: thermal resistor Pt 100 standard
(linear, three-conductor Pt 200 standard
connection) Pt 500 standard
(temperature
Pt 1000 standard
measurement)
Ni 100 standard
Ni 1000 standard

Default Settings
The module has the following default settings in STEP 7:
• Channels 0 to 7: “Voltage” for the measuring method ; “ 10 V” for the
measuring range
You can use these measuring methods and measuring ranges without
parameterizing the SM 431; AI 8 x 14 Bit in STEP 7.

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 Analog Modules

Wire Break Check for Temperature or Resistance Measurement

The wire break check is intended primarily for temperature measurements (TC,
RTD) or resistance measurements. Always parameterize the wire break check in
these cases as this ensures that, in the event of a wire break, the measured value
provided by the module accepts the data for overrun 7FFFH.

Special Characteristics of the Wire Break Check for the Voltage Measurement
Methods
In some transmitters, incorrect measured values may be obtained due to the fact
that the wire break check is enabled. If so, disable the wire break check.
The reason Some transmitters try to correct the test current and in doing so corrupt
the setpoint value provided.

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Analog Modules

5.20 Analog Input Module SM 431; AI 8 x 14 Bit;

(6ES7431-1KF20-0AB0)

Characteristics
The analog input module SM 431; AI 8 x 14 Bit has the following features:
• Rapid A/D changeover, therefore particularly suitable for highly dynamic
processes
• 8 inputs for voltage/current measurement
• 4 inputs for resistance measurement
• Various measuring ranges, adjustable in parallel
• 14-bit resolution
• Supply voltage: 24 VDC required only for the connection of 2-wire transmitters
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the reference potential of the connected sensors and MANA is 8 VAC

Block Diagram of the SM 431; AI 8 x 14 bits

CH0 Measuring
range
module
CH1
0

Bus S7-400
Bus control

MANA A
MULTIPLEXER

Measuring
range
CH6 module
3
CH7

+ 5V ENABLE
L+ Bus S7-400
+ 15V +5V
M
0V 0V Bus S7-400
MANA
-- 15V

Figure 5-30 Block Diagram of the SM 431; AI 8 x 14 Bit

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 Analog Modules

Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit

Voltage measurement Resistance measurement

Current measurement
1
2
3
L+ L+
4
5
6 M0+ CH0 Word 0 M0+
V
7 M0-- M0--
8
9 CH0 Word 0
10
11 V
M1+ CH1 Word 2 IC0+
12 M1-- IC0--
13
14
15
16 M2+ CH2 Word 4 M1+
17 M2-- M1--
18
19 CH2 Word 4
20
21 M3+ CH3 Word 6 IC1+
22 M3-- IC1--
23
24
25
26 MANA
27
28 A
M4+ CH4 Word 8 M2+
29 M4-- M2--
30
31 CH4 Word 8
32
33 A M5+ CH5 Word 10 IC2+
34 M5-- IC2--
35
36
37
38 M6+ M3+
Tr CH6 Word 12
39 M6-- M3--
40
41 CH6 Word 12
42
43 Tr
M7+ CH7 Word 14 IC3+
44 M7-- IC3--
45
46
47
M M
48

Figure 5-31 Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit

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Analog Modules

Technical Specifications of the SM 431; AI 8 x 14 Bit

Dimensions and Weight Current consumption

Dimensions W x H x D 25 x 290 x 210 • From the backplane bus Max. 1000 mA
(in millimeters) • From the backplane bus L+ Max. 200 mA (with 8
Weight Approx. 500 g connected, fully
controlled 2-wire
Data for Specific Module transmitters)
Number of inputs 8 Power dissipation of the Typ. 4.9 W
• For resistance-type sensor 4 module
Length of cable Analog Value Generation
• Shielded Max. 200 m Measuring principle Actual-value
Voltages, Currents, Potentials conversion

Rated load voltage L+ 24 VDC (required only Integration time/conversion (Does not go into the
for the supply of 2-wire time/resolution (per channel) response time)
transmitters) • Parameters can be Yes
• Reverse polarity protection Yes assigned

Power supply of the • Interference voltage None/400/60/50

transmitters suppression f1 in Hz

• Supply current Max. 50 mA • Basic conversion time 52 ms

• Short-circuit proof Yes • Resolution (incl. 14/14/14

overrange)
Constant measured current for Typ. 1.67 mA
resistance-type sensor Smoothing of the measured Can be configured
values “none -- a lot”
Isolation
Time constant of the input 15 ms
• Between channels and Yes filter
backplane bus
Basic execution time of the 0.420
• Between the channels No module, in ms (all channels
• Between channels and Yes enabled)
load voltage L+
Permitted potential difference
• Between inputs and MANA 8 VAC
(UCM)
• Between the inputs (ECM) 8 VAC
• Between MANA and 75 VDC/60 VAC
Minternal (UISO)
Insulation tested
• Between bus and analog 2120 VDC
section
• Between bus and chassis 500 VDC
ground
• Between analog section 707 VDC
and L+/M
• Between analog section 2120 VDC
and chassis ground
• Between L+/M and chassis 2120 VDC
ground

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Suppression of interference, Limits of Error Status, Interrupts, Diagnostics

Interference voltage suppression configured for Interrupts None
f = nx (f1 1%), (f1 = interference frequency) n = 1, 2 ,
Diagnostic functions None
...
filter 400/60/50 Hz Substitute value can be applied No
• Common-mode > 80 db Data for Selecting a Sensor
interference
Input range (rated values)/Input
(UCM < 11 Vss)
resistance
• Series-mode interference > 40 dB
(peak value of interference • Voltage  1 V/10 MΩ
< rated value of input  10 V/10 MΩ
range) 1 V to 5 V/10 MΩ

Crosstalk between the inputs > 70 dB

• Current  20 mA/50 Ω
4 mA to 20 mA/50 Ω
Operational limit (in the entire temperature range, with
reference to the input range) • Resistors 0 to 600 Ω/10 MΩ
• Voltage input Maximum input voltage for Max. 18 V continuous;
voltage input 75 V for 1 ms (cycle
-- = 1 V  0.7 %
(destruction limit) factor 1 : 20)
--  10 V  0.9 %
Maximum input current for 40 mA continuous
-- 1 V to 5 V  0.9 %
current input (destruction limit)
• Current input
Connection of the signal
--  20 mA  0.8% sensor
-- 4 mA to 20 mA  0.8% • For measuring voltage Possible
• Resistance test
• For measuring current
-- 0...600 Ω;  1.0% -- As two-wire Possible
Basic error (operational limit at 25°C, referred to input transmitter
range) -- As four-wire Possible
• Voltage input transmitter

-- 1V  0.6% • For measuring resistance

--  10 V  0.75% -- With two-conductor Possible; cable
-- 1 ... 5 V  0.75% terminal resistance is also
-- With three-conductor measured
• Current input
terminal
--  20 mA  0.7%
-- With four-conductor Possible
-- 4 mA to 20 mA  0.7%
terminal
• Resistance test
• Load of the two-wire Max. 750 Ω
-- 0 to 600 Ω;  0.7% transmitter
Temperature error (with  0.03% K
reference to the input range)
Linearity error (with reference  0,05% K
to the input range)
Repeat accuracy (in the steady  0.2%
state at 25 °C, referred to the
input range)

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5.20.1 Commissioning the SM 431; AI 8 x 14 Bit

You set the mode of operation of the SM 431; AI 8 x 14 Bit by means of measuring
range modules on the module and in STEP 7.

Measuring Range Modules

A measuring range module of the module matches two channels and one
resistance channel to each type of sensor. If necessary, the measuring range
modules must be replugged to change the measuring method and the measuring
range. The steps you have to perform to do this are described in detail in
Section 5.4.
The corresponding table in Section 5.20.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.

Parameters
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-55 Parameters of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0)

Parameter Value Range Default1) Parameter Scope

Type
Measurement
• Measuring type Disabled
U Voltage
4DMU Current (four-wire transmitter) U
2DMU Current (two-wire transmitter)
R-4L Resistance (four-conductor Static Channel
terminal)
• Measuring Refer to Section 5.20.2 for the 10 V
range measuring ranges of the input channels
that you can set.
• Interference 400 Hz; 60 Hz; 50 Hz; none 50 Hz
suppression
• Smoothing None None
High
1) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

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Smoothing of the Measured Values

You will find information that is generally applicable to the smoothing of analog
values in Section 5.6. You can only set strong smoothing for the SM 431;
AI 8 x 14 Bit.
The module cycle time is a constant, irrespective of how many channels are
enabled. It therefore has no effect on the filter settling time, which is defined by the
parameter assignment of interference frequency suppression and smoothing.

Note
It is only advisable to parameterize smoothing if you also parameterize
interference frequency suppression; otherwise, the measured value resolution will
be reduced to 9 bits (analog value representation is right aligned in this case).

Filter Settling Time with Strong Smoothing

Table 5-56 Interference Frequency Suppression and Filter Settling Time with Smoothing of
the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0)

Interference Suppression Smoothing Filter settling time in ms

None High --
50 Hz High 100
60 Hz High 83.333
400 Hz High 12.5

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Analog Modules

Step Response with Strong Smoothing

The following figure illustrates the contents of Table 5-56. It shows the filter settling
time after which, in the case of a step response, the smoothed analog value is
applied to almost 100%, depending on the interference frequency suppression that
has been set. The figure applies to every change of signal at an analog input.

Signal variation Step response for any analog input signal

in percent
100

63

50

0 12.5 30 60 83.333 100 120 150

Interference frequency suppression 400 Hz: Filter settling time in ms
60 Hz:
50 Hz:

Figure 5-32 Step Response of the SM 431; AI 8 x 14 Bit (6ES7 431-1KF20-0AB0)

5.20.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 8 x 14 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Resistance test
You specify the setting by means of the measuring range modules on the module
and the “Measuring Type” parameter in STEP 7.

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 Analog Modules

Circuit Variants of the Channels

Two channels are set in each case with the measuring range module. There are
therefore restrictions as regards the measuring method for the adjacent channels
0/1, 2/3, 4/5 and 6/7, as shown in the following table:

Table 5-57 Selection of the Measuring Method for Channel n and Channel n+1 of the SM 431;
AI 8 x 14 Bit (6ES7431-1KF20-0AB0)

Meas. Type Disabled Voltage Voltage Voltage Current Current R-4L

Channel n+1 1 V 1 to 5 V 10 V 4-DMU 2-DMU
Meas. Type Chan-
nel n

Disabled x x x x x x
Voltage 1 V x x
Voltage 1 to 5 V x x x
Voltage 10 V x x x
Current four-wire x x
transmitter
Current two-wire x x
transmitter
Resistance x
four-conductor

Example
If you select “current (two-wire transmitter)” for channel 6, you can only disable the
measuring method or set “current (two-wire transmitter)” for channel 7.

Circuit for Resistance Measurement

The following conditions apply when measuring the resistance with the SM 431;
AI 8 x 14 Bit:

Table 5-58 Channels for Resistance Measurement of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0)

Measuring Type Parameter Permissible Condition

for Channel n
Resistor 0, 2, 4 or 6 You must disable the “Measuring Type” parameter for
(four-conductor terminal) channels n+1 (1, 3, 5, 7).
The reason The connections of channel n+1 are used
to supply the resistance that is connected to
channel n.

Unused Channels
Unused channels can be left open. Set the correspondingmeasuring range
modules in position “B”. You can improve the noise immunity of the module in a
measuring environment with serious interference by connecting M-- and MANA.

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Analog Modules

Measuring Ranges
You set the measuring ranges by means of the measuring range modules on the
module and the “Measuring Type” parameter in STEP 7.

Table 5-59 Measuring Ranges of the SM 431; AI 8 x 14 Bit (6ES7431-1KF20-0AB0)

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
U: Voltage 1V A You will find the digitized analog
values
l iin S
Section
ti 55.3.1
3 1 in
i the
th
1 to 5 V B
voltage measuring range
 10 V
2DMU: Current 4 to 20 mA D To supply these transmitters with
(two-wire transmitter) current you must connect 24 V to
the L+ and M front connector
terminals.
You will find the digitized analog
values in Section 5.3.1 in the
current measuring range
4DMU: Current 4 to 20 mA C You will find the digitized analog
(four-wire transmitter)  20 mA values in Section 5.3.1 in the
current measuring range
R-4L: Resistor 600 Ω A You will find the digitized analog
(four-conductor values in Section 5.3.1 in the
terminal) resistance measuring range

Default Settings
The module has the following default settings in STEP 7:
• Channels 0 to 7: “Voltage” for the measuring method ; “ 10 V” for the
measuring range
You can use these measuring methods and measuring ranges without
parameterizing the SM 431; AI 8 x 14 Bit in STEP 7.

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 Analog Modules

5.21 Analog Input Module SM 431; AI 16 x 13 Bit;

(6ES7431-0HH00-0AB0)

Characteristics
The analog input module SM 431; AI 13 x 16 Bit has the following features:
• 16 inputs for voltage/current measurement
• Various measuring ranges, adjustable in parallel
• 13-bit resolution
• Non-isolated between the analog section and bus
• The maximum permissible common mode voltage between the channels and
the reference potentials of the connected sensors and central ground point is
2 VDC/VAC

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Analog Modules

Block Diagram of the SM 431; AI 16 x 13 Bit

Measuring range module

Control and backplane bus interface

*

Tr

Tr

Tr

Tr

* Tr = Transducer = Transmitter

Tr

*Voltage/current sensor and M must

Tr
be connected to the chassis ground
of the rack

Tr

Tr

Figure 5-33 Block Diagram of the SM 431; AI 16 x 13 Bit

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 Analog Modules

Terminal Assignment Diagram of the SM 431; AI 16 x 13 Bit

Voltage measurement
Current measurement
1
2
3
L+ L+
4
5
6 M0+ CH0 Word 0
7 M0--
8 M1+ CH1 Word 2
9 M1--
10
11 M2+ CH2 Word 4
12 M2--
13 M3+ CH3 Word 6
14 M3--
15
16 Tr
M4+ CH4 Word 8
17 M4--
18 Tr M5+ CH5 Word 10
19 M5--
20
21 Tr M6+ CH6 Word 12
22 M6--
23 Tr M7+ CH7 Word 14
24 M7--
25
26
27
28 M8+ CH8 Word 16
29 M8--
30 M9+ CH9 Word 18
31 M9--
32
33 M10+ CH10 Word 20
34 M10--
35 M11+ CH11 Word 22
36 M11--
37
38 M12+ CH12 Word 24
Tr
39 M12--
40 M13+ CH13 Word 26
Tr
41 M13--
42
43 Tr
M14+ CH14 Word 28
44 M14--
45 Tr M15+ CH15 Word 30
46 M15--
47
M M
48

Figure 5-34 Terminal Assignment Diagram of the SM 431; AI 16 x 13 Bit

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Analog Modules

Technical Specifications of the SM 431; AI 16 x 13 Bit

Dimensions and Weight Basic execution time of the 880/1040

Dimensions L x H x D 25 x 290 x 210 module, in ms (all channels
(in millimeters) enabled)
Weight Approx. 500 g Suppression of Interference, Limits of Error
Data for Specific Module Interference voltage suppression for f = nx (f1 1%),
(f1 = interference frequency) n = 1, 2, ...
Number of inputs 16
• Common-mode > 86 dB
• Shielded Max. 200 m interference
Voltages, Currents, Potentials (UCM < 2 V)
Rated load voltage L+ 24 VDC (only required • Series-mode interference > 60 dB
for the supply of 2-wire (peak value of interference
transmitters) < rated value of input
• Reverse polarity protection Yes range)
Power supply of the Crosstalk between the inputs > 50 dB
transmitters Operational limit (in the entire temperature range, with
• Supply current Max. 50 mA reference to the input range)
• Short-circuit proof Yes • Voltage input
Constant measured current for Typ. 1.67 mA -- 1V  0.65%
resistance-type sensor --  10 V  0.65%
Isolation -- 1 V to 5 V 1%
• Between channels and No • Current input
backplane bus
--  20 mA  0.65%
• Between the channels No
-- 4 mA to 20 mA  0.65%
• Between channels and No
Basic error (operational limit at 25 °C, referred to input
load voltage L+
range)
Permitted potential difference
• Voltage input
• Between inputs and MANA 2 VDC/2 VACSS
-- 1V  0.25%
(UCM)
--  10 V  0.25%
• Between the inputs (ECM) 2 VDC/2 VACSS
-- 1 V to 5 V  0.5%
Insulation tested with
• Between bus and chassis 500 VDC
• Current input
ground --  20 mA  0.25%
Current consumption -- 4 mA to 20 mA  0.25%
• From the backplane bus Max. 100 mA Temperature error (with  0.01%
reference to the input range)
• From load voltage L+ Max. 400 mA
(with 16 connected, fully Linearity error (with reference  0.05%
controlled two-wire to the input range)
transmitters) Repeat accuracy (in the steady  0.01%
Power dissipation of the Typ. 2 W state at 25 °C, referred to the
module input range)
Analog Value Generation Status, Interrupts, Diagnostics
Measuring principle Integrative Interrupts None
Integration time/conversion (Does not go into the Diagnostic functions None
time/resolution (per channel) response time) Substitute value can be applied No
• Parameters can be Yes
assigned
• Interference voltage 60/50
suppression f1 in Hz
• Integration time in 50/60
milliseconds
• Basic conversion time in 55/65
ms
• Resolution including sign 13 bits
Smoothing of the measured Not possible
values

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Data for Selecting a Sensor Connection of the signal

Input range (rated values)/Input sensor
resistance • For measuring voltage Possible
• Voltage  1 V/10 MΩ • For measuring current
 10 V/100 MΩ -- As two-wire Possible
1 V to 5 V/100 MΩ transmitter
• Current  20 mA/50 Ω -- As four-wire Possible
4 mA to 20 mA/50 Ω transmitter
Maximum input voltage for 20 V continuous; • Load of the two-wire Max. 750 Ω
voltage input 75 V for 1 ms (cycle transmitter
(destruction limit) factor 1 : 20)
Maximum input current for 40 mA
current input (destruction limit)

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Analog Modules

5.21.1 Commissioning the SM 431; AI 16 x 13 Bit

You set the mode of operation of the SM 431; AI 16 x 13 Bit by means of

measuring range modules on the module and in STEP 7.

Measurement Range Modules

A measuring range module of the module matches two consecutive channels to
each type of sensor. If necessary, the measuring range modules must be
replugged to change the measuring method and the measuring range. The steps
you have to perform to do this are described in detail in Section 5.4.
The corresponding table in Section 5.21.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.

Parameters
You will find a description of the procedure of assigning parameters to analog
modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-60 Parameters of the SM 431; AI 16 x 13 Bit

Parameter Value Range Default1) Parameter Scope

Type
Measurement
• Measuring type Disabled U
U Voltage
4DMU Current (four-wire transmitter)
2DMU Current (two-wire transmitter) Static Channel

• Measuring Refer to Section 5.21.2 for the measuring 10 V

range ranges of the input channels that you can
set.
• Interference 60 Hz; 50 Hz 50 Hz
suppression
1) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

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5.21.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 16 x 13 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
You specify the setting by means of the measuring range modules on the module
and the “Measuring Type” parameter in STEP 7.

Circuit Variants of the Channels

Two channels are set in each case with the measuring range module. There are
therefore restrictions as regards the measuring method for the adjacent channels
0/1, 2/3, 4/5, 6/7, 8/9, 10/11, 12/13 and 14/15, as shown in the following table:

Table 5-61 Selection of the Measuring Method for Channel n and Channel n+1 of the
SM 431; AI 16 x 13 Bit

Meas. Type Disabled Voltage Voltage Voltage Current Current

Channel n+1 1 V 1 to 5 V 10 V 4-DMU 2-DMU
Meas. Type
Channel n
Disabled x x x x x x
Voltage 1 V x x
Voltage 1 to 5 V x x x
Voltage 10 V x x x
Current four-wire x x
transmitter
Current two-wire x x
transmitter

Example
If you select “current (two-wire transmitter)” for channel 6, you can only disable the
measuring method or set “current (two-wire transmitter)” for channel 7.

Unused Channels
Unused channels can be left open. Put the measuring range modules in position
“B”. You can improve the noise immunity of the module in a measuring environment
with serious interference by interconnecting M-- and Mana.
Disable the “Measuring Type” parameter for unused channels to reduce the scan
cycle time of the module.

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Analog Modules

Measuring Ranges
You set the measuring ranges by means of the measuring range modules on the
module and the “Measuring Type” parameter in STEP 7.

Table 5-62 Measuring Ranges of the SM 431; AI 16 x 13 Bit

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
U: Voltage 1V A You will find the digitized analog
values
l iin S
Section
ti 55.3.1
3 1 in
i the
th
1 to 5 V B
voltage measuring range
 10 V
2DMU: Current 4 to 20 mA D To supply these transmitters with
(two-wire transmitter) current you must connect 24 V to
the L+ and M front connector
terminals.
You will find the digitized analog
values in Section 5.3.1 in the
current measuring range
4DMU: Current 4 to 20 mA C You will find the digitized analog
(four-wire transmitter)  20 mA values in Section 5.3.1 in the
current measuring range

Default Settings
The module has the following default settings in STEP 7:
• Measuring method “voltage”
• Measuring range “+/--10 V”.
You can use this combination of measuring method and measuring range without
parameterizing the SM 431; AI 16 x 13 Bit in STEP 7

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5.22 Analog Input Module SM 431; AI 16 x 16 Bit;

(6ES7431-7QH00-0AB0)

Characteristics
The analog input module SM 431; AI 16 x 16 Bit has the following features:
• 16 inputs for voltage/current and temperature measurement with thermocouple
(TC)
• 8 inputs for resistance and temperature measurement with thermocouple (TC)
• Various measuring ranges, adjustable in parallel
• 16-bit resolution
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt when limit has been exceeded
• Programmable end-of-scan-cycle interrupt
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the channel and central ground is 120 VAC

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Analog Modules

Block Diagram of the SM 431; AI 16 x 16 Bit

CH0 Meas. range

module 0 I
CH1 const

Bus S7-400

Bus control
jumpering
Signal
PGA

A
Multiplexer
Opto relay

CH14 Meas. range

CH15 module 7

+ 15 V

L+ + 5V +5V
Diagnostics 0V Bus S7-400
M in 0V
L+ loop --15 V

Figure 5-35 Block Diagram of the SM 431; AI 16 x 16 Bit

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Terminal Assignment Diagram of the SM 431; AI 16 x 16 Bit

Thermocouples Resistance measurement

Voltage measurement Resistance thermometer
Current measurement
INTF 1
EXTF 2
3
L+ L+
4
5
6 M0+ CH0 Word 0 M0+
7 M0-- M0-- CH0 Word 0
8 M1+ CH1 Word 2 IC0+
9 M1-- IC0--
10
11 V M2+ CH2 Word 4 M1+
12 M2-- M1-- CH2 Word 4
13 V M3+ CH3 Word 6 IC1+
14 M3-- IC1--
15
16 M4+ CH4 Word 8 M2+
17 M4-- M2-- CH4 Word 8
18 M5+ CH5 Word 10 IC2+
19 M5-- IC2--
20
21 M6+ CH6 Word 12 M3+
22 M6-- M3-- CH6 Word 12
23 M7+ CH7 Word 14 IC3+
24 M7-- IC3--
25
26
27
28 A M8+ CH8 Word 16 M4+
29 M8-- M4-- CH8 Word 16
30 A M9+ CH9 Word 18 IC4+
31 M9-- IC4--
32
33 A
M10+ CH10 Word 20 M5+
34 M10-- M5-- CH10 Word 20
35 A M11+ CH11 Word 22 IC5+
36 M11-- IC5--
37
38 Tr
M12+ CH12 Word 24 M6+
39 M12-- M6-- CH12 Word 24
40 Tr M13+ CH13 Word 26 IC6+
41 M13-- IC6--
42
43 Tr
M14+ CH14 Word 28 M7+
44 M14-- M7-- CH14 Word 28
45 Tr M15+ CH15 Word 30 IC7+
46 M15-- IC7--
47
M M
48

Figure 5-36 Terminal Assignment Diagram of the SM 431; AI 16 x 16 Bit

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Technical Specifications of the SM 431; AI 16 x 16 Bit

Dimensions and Weight Insulation tested with

Dimensions W x H x D 25 x 290 x 210 • Between bus and L+/M 2120 VDC
(in millimeters) • Between bus and analog
Weight Approx. 500 g section 2120 VDC
• Between bus and chassis 500 VDC
Data for Specific Module ground
Number of inputs 16 • Between analog section 707 VDC
• For resistance-type sensor 8 and L+/M
Length of cable • Between analog section 2120 VDC
and chassis ground
• Shielded Max. 200 m
in the input ranges ≦ 80 Max. 50 m • Between L+/M and chassis 2120 VDC
mV and with ground
thermocouples Current consumption
Voltages, Currents, Potentials • From the backplane bus Max. 700 mA
Rated load voltage L+ 24 VDC (only required (5 V)
for the supply of • From load voltage L+ Max. 400 mA
two-wire transmitters) (with 16 connected, fully
• Reverse polarity protection Yes controlled two-wire
transmitters)
Power supply of the
transmitters Power dissipation of the Typ. 4.5 W
module
• Supply current Max. 50 mA
Analog Value Generation
• Short-circuit proof Yes
Measuring principle Integrative
Constant measured current for Typ. 1.67 mA
resistance-type sensor Integration time/conversion (Does not go into the
time/resolution (per channel) response time)
Isolation
• Parameters can be Yes
• Between channels and Yes assigned
backplane bus
• Interference voltage 400/60/50
• Between the channels No suppression f1 in Hz
• Between channels and Yes
• Integration time in ms 2.5/16.7/20
load voltage L+
Permitted potential difference
• Basic conversion time in 6/20.1/23.5
ms
• Between inputs and MANA 120 VAC
(UCM) • Additional conversion time 12/40.2/47
for measuring resistance
• Between the inputs (ECM) 120 VAC with 3-conductor terminal,
• Between MANA and 75 VDC/60 VAC in ms
Minternal (UISO) • Additional conversion time 4.3/4.3/4.3
for open-circuit monitoring,
in ms
• Additional conversion time 5.5/5.5/5.5
for measuring resistance
in ms
• Resolution including sign 16/16/16 bit
Smoothing of the measured Parameters can be
values assigned in 4
stages
Basic execution time of the 96/322/376
module, in ms (all channels
enabled)

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Suppression of Interference, Limits of Error -- 0 to 5000 Ω;  0.4%

Interference voltage suppression for f = nx (f1 1%), three-conductor
(f1 = interference frequency) n = 1, 2, ... measurement (in
the range of
• Common-mode > 100 dB 6000 Ω)
interference
(UCM < 120 Vss) • Thermocouples

• Series-mode interference > 40 dB -- TC type B  11.5 K

(peak value of interference -- TC type R  7.3 K
< rated value of input -- TC type S  8.3 K
range)
-- TC type T  1.7 K
Crosstalk between the inputs > 70 dB -- TC type E  3.2 K
Operational limit (in the entire temperature range, with -- TC type J  4.3 K
reference to the input range) -- TC type K  6.2 K
• Voltage input -- TC type U  2.8 K
--  25 mV  0.35 % -- TC type L  4.2 K
--  50 mV  0.32% -- TC type N  4.4 K
--  80 mV  0.31% • Resistance thermocouples, four-conductor
--  250 mV  0.3% standard measuring range
--  500 mV  0.3% -- Pt 100  3.1 K
-- 1V  0.3% -- Pt 200  4.9 K
--  2.5 V  0.3% -- Pt 500  3.9 K
-- 5V  0.3% -- Pt 1000  3.1 K
-- 1 V to 5 V  0.3% -- Ni 100  0.8 K
--  10 V  0.3% -- Ni 1000  0.8 K
• Current input Climatic measuring range
-- 0 mA to 20 mA  0.3% -- Pt 100  0.4 K
--  5 mA  0.3% -- Pt 200  0.4 K
--  10 mA  0.3% -- Pt 500  0.4 K
--  20 mA  0.3% -- Pt 1000  0.4 K
-- 4 mA to 20 mA  0.3% -- Ni 100  0.8 K
• Resistance test -- Ni 1000  0.8 K

-- 0 to 48 Ω;  0.3% • Resistance thermocouples, three-conductor

four-conductor standard measuring range
measurement -- Pt 100  4.2 K
-- 0 to 150 Ω,  0.3% -- Pt 200  6.5 K
four-conductor -- Pt 500  5.2 K
measurement
-- Pt 1000  4.2 K
-- 0 to 300 Ω,  0.3% -- Ni 100  1.0 K
four-conductor
measurement -- Ni 1000  1.0 K

-- 0 to 600 Ω;  0.3% Climatic measuring range

four-conductor -- Pt 100  0.5 K
measurement
-- Pt 200  0.5 K
-- 0 to 5000 Ω;  0.3% -- Pt 500  0.5 K
four-conductor
-- Pt 1000  0.5 K
measurement (in
the range of -- Ni 100  1.0 K
6000 Ω) -- Ni 1000  1.0 K
-- 0 to 300 Ω;  0.4%
three-conductor
measurement
-- 0 to 600 Ω;  0.4%
three-conductor
measurement

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Analog Modules

Basic error (operational limit at 25 °C, referred to input • Thermocouples

range)
-- TC type B  7.6 K
• Voltage input -- TC type R  4.8 K
--  25 mV  0.23% -- TC type S  5.4 K
--  50 mV  0.19% -- TC type T  1.1 K
--  80 mV  0.17% -- TC type E  1.8 K
--  250 mV  0.15% -- TC type J  2.3 K
--  500 mV  0.15% -- TC type K  3.4 K
-- 1V  0.15% -- TC type U  1.7 K
--  2.5 V  0.15% -- TC type L  2.3 K
-- 5V  0.15% -- TC type N  2.6 K
-- 1 V to 5 V  0.15% • Resistance thermocouples, four-conductor
-- = 10 V  0.15% standard measuring range
• Current input -- Pt 100  1.6 K
-- 0 mA to 20 mA  0.15% -- Pt 200  2.5 K
--  5 mA  0.15% -- Pt 500  2.0 K
--  10 mA  0.15% -- Pt 1000  1.6 K
--  20 mA  0.15% -- Ni 100  0.4 K
-- 4 mA to 20 mA  0.15% -- Ni 1000  0.4 K

• Resistance test Climatic measuring range

-- 0 to 48 Ω;  0.15% -- Pt 100  0.2 K

four-conductor -- Pt 200  0.2 K
measurement -- Pt 500  0.2 K
-- 0 to 150 Ω,  0.15% -- Pt 1000  0.2 K
four-conductor -- Ni 100  0.4 K
measurement
-- Ni 1000  0.4 K
-- 0 to 300 Ω,  0.15%
four-conductor • Resistance thermocouples, three-conductor
measurement standard measuring range
-- Pt 100  3.1 K
-- 0 to 600 Ω;  0.15%
four-conductor -- Pt 200  4.9 K
measurement -- Pt 500  3.9 K
-- 0 to 5000 Ω;  0.15% -- Pt 1000  3.1 K
four-conductor -- Ni 100  0.8 K
measurement (in
-- Ni 1000  0.8 K
the range of
6000 Ω) Climatic measuring range
-- 0 to 300 Ω;  0.3% -- Pt 100  0.4 K
three-conductor -- Pt 200  0.4 K
measurement
-- Pt 500  0.4 K
-- 0 to 600 Ω;  0.3% -- Pt 1000  0.4 K
three-conductor
-- Ni 100  0.8 K
measurement
-- Ni 1000  0.8 K
-- 0 to 5000 Ω;  0.3%
three-conductor Temperature error (with  0.004% K
measurement (in reference to the input range)
the range of
Linearity error (with reference  0.01% K
6000 Ω)
to the input range)
Repeat accuracy (in the steady  0.1%
state at 25 °C, referred to the
input range)

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Status, Interrupts, Diagnostics • Resistance thermometer Pt 100/1 MΩ

Interrupts Pt 200/1 MΩ
Pt 500/1 MΩ
• Hardware interrupt Parameters can be
assigned Pt 1000/1 MΩ
Ni 100/1 MΩ
• Hardware interrupt when Parameters can be
limit has been exceeded assigned Ni 1000/1 MΩ

• Diagnostic Interrupt Parameters can be Maximum input voltage for Max. 18 V continuous;
assigned voltage input 75 V for 1 ms (cycle
(destruction limit) factor 1 : 20)
Diagnostic functions
Maximum input current for 40 mA
• Group error display current input (destruction limit)
-- For internal fault Red LED (INTF) Connection of the signal
-- For external fault Red LED (EXTF) sensor
• Diagnostic information Yes • For measuring voltage Possible
readable
• For measuring current
Substitute value can be applied No
-- As two-wire Possible
Data for Selecting a Sensor transmitter
Input range (rated values)/Input -- As four-wire Possible
resistance transmitter
• Voltage  25 mV/1 MΩ • For measuring resistance
 50 mV/1 MΩ
 80 mV/1 MΩ -- With two-conductor Possible; cable
 250 mV/1 MΩ terminal resistance is also
 500 mV/1 MΩ measured
 1 V/1 MΩ -- With three-conductor Possible
 2.5 V/1 MΩ terminal
 5 V/1 MΩ
1 V to 5 V/1 MΩ -- With four-conductor Possible
 10 V/1 MΩ terminal
• Current 0 mA to 20 mA/50 Ω • Load of the two-wire Max. 750 Ω
 5 mA/50 Ω transmitter
 10 mA/50 Ω
Characteristic linearization Parameters can be
 20 mA/50 Ω
assigned
4 mA to 20 mA/50 Ω
• Resistors 0 to 48 Ω/1 MΩ
• For thermocouples Types B, R, S, T, E, J,
K, U, L, N
0 to 150 Ω/1 MΩ
0 to 300 Ω/1 MΩ • For Pt 100, Pt 200, Pt 500,
0 to 600 Ω/1 MΩ resistance thermometer Pt 1000, Ni 100,
0 to 6000 Ω/1 MΩ Ni 1000
(can be used up to
5000 Ω) Temperature compensation Yes, programmable

• Thermocouples TC type B/1 MΩ • Internal temperature No

compensation
TC type R/1 MΩ
TC type S/1 MΩ • External temperature Possible
compensation with
TC type T/1 MΩ compensating box
TC type E/1 MΩ
• External temperature Possible
TC type J/1 MΩ compensation with Pt 100
TC type K/1 MΩ
• Compensation for Possible
TC type U/1 MΩ definable reference
TC type L/1 MΩ junction
TC type N/1 MΩ temperature
Unit for temperature Degrees Celsius
measurement

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5.22.1 Commissioning the SM 431; AI 16 x 16 Bit

You set the mode of operation of the SM 431; AI 16 x 16 Bit by means of

measuring range modules on the module and in STEP 7.

Measuring Range Module

A measuring range module of the module matches two channels and one
resistance channel to each type of sensor. If necessary, the measuring range
modules must be replugged to change the measuring method and the measuring
range. The steps you have to perform to do this are described in detail in
Section 5.4.
The corresponding table in Section 5.22.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.

Parameters
You will find a description of the procedure for assigning parameters to analog
modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-63 Parameters of the SM 431; AI 16 x 16 Bit

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for 1 to 4 --
Static Module
interrupt
Trigger for hardware
interrupt Yes/no No Static Channel
• End of scan cycle
reached at input
• High limit 32511 to --32512
-- Dynamic Channel
• Low limit --32512 to 32511
Diagnostics
• Wire break Yes/no
No
• Reference channel Yes/no
No
error No Static Channel
Yes/no
• Underflow Yes/no
No
• Overflow Yes/no
No
• Short circuit to M

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Table 5-63 Parameters of the SM 431; AI 16 x 16 Bit, continued

Parameter Value Range Default2) Parameter Scope

Type
Measurement
• Measuring type Disabled U
U Voltage
4DMU Current
(4-wire transmitter)
2DMU Current
(two-wire transmitter)
R-4L Resistor
(four-conductor terminal)
R-3L Resistor
(three-conductor terminal) Static Channel
RTD-4L Thermal resistor
(linear, four-conductor
terminal)
RTD-3L Thermal resistor
(linear, three-conductor
terminal)
TC-L Thermocouple (linear)
• Measuring range Refer to Section 5.22.2 for the 10 V
measuring ranges of the input
channels that you can set.
• teference --273.15 to 327.67 oC 0.00 oC
Temperature
• Interference 400 Hz; 60 Hz; 50 Hz 50 Hz
suppression
• Smoothing None None
Low
Dynamic Module
Average
High
• Ref. junction None None
RTD on Channel 0
Reference temperature value
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.

A Point to Note About Channels for Hardware Interrupts with the End of Scan
Cycle Trigger
You can parameterize hardware interrupts for the end of scan cycle for one of the
16 channels because the module can only trigger these interrupts on one channel.

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Analog Modules

Smoothing of the Measured Values

You fill find information that is generally applicable to the smoothing of analog
values in Section 5.6.
The following figure indicates for the module the number of module cycles after
which, in the case of a step response, the smoothed analog value is applied at
almost 100%, depending on the smoothing setting. The figure applies to every
change of signal at an analog input.

Signal variation Step response for any analog input signal

in percent
100

63

50

0 20 40 60 80 100
Smoothing: low:
average: Module cycles
high:
Figure 5-37 Step Response of the SM 431; AI 16 x 16 Bit (6ES7431-7QH00-0AB0)

Displaying Parameter Assignment Errors

The SM 431; AI 16 x 16 Bit has diagnostics capability. Below you will find an
overview of the displays that are possible for modules with parameter assignment
errors.

Table 5-64 Diagnostic Information of the SM 431; AI 16 x 16 Bit

Incorrect Parameter Possible Display Explanation

Assignment
Of the module • Module malfunction You can find an explanation of
• Internal malfunction the diagnostic information in
Tables 4-7 and 5-46 on Pages
• Wrong parameters
4-10 and 5-64.
Affecting certain • Module malfunction
channels • Internal malfunction
• There is a channel error
• Wrong parameters
• Channel information
available
• Vector channel error
• Channel parameter
assignment error

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5.22.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 16 x 16 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Resistance test
• Temperature measurement
You specify the setting by means of the measuring range modules on the module
and the “Measuring Type” parameter in STEP 7.

Circuit Variants for the Channels

Two channels are set in each case with the measuring range module. There are
therefore restrictions as regards the measuring method for the adjacent channels
0/1, 2/3, 4/5, 6/7, 8/9, 10/11, 12/13 and 14/15, as shown in the following table:

Table 5-65 Selection of the Measuring Method for Channel n and Channel n+1 of the SM 431;
AI 16 x 16 Bit
Meas. Type Disabled Voltage Current Current R-4L R-3L RTD-4L RTD-3L TC-L
Channel n+1 4-DMU 2-DMU

Meas. Type
Channel n

Disabled x x x x x
Voltage x x x
Current four-wire x x
transmitter
Current two-wire x x
transmitter
Resistance x
four-conductor
Resistance x
three-conductor
Thermal resistor x
four-conductor
Thermal resistor x
three-conductor
Thermocouples x x x

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Analog Modules

Example
If you have select “current (two-wire transmitter)” for channel 6, you can only
disable the measuring method or set “current (two-wire transmitter)” for channel 7.

Circuit for Resistance and Temperature Measurement

The following conditions apply when measuring the resistance and temperature
with the SM 431; AI 16 x 16 Bit:

Table 5-66 Channels for Resistance and Temperature Measurement of the SM 431; AI 16 x 16 Bit

Measuring Type Parameter Permissible Condition

for Channel n
Resistor 0, 2, 4, 6, 8, 10, You must disable the “Measuring Type” parameter
(four-conductor terminal) 12 or 14 for channels n+1 (1,
( , 3,, 5,, 7,, 9,, 11,, 13,, 15).
)
Resistor 0, 2, 4, 6, 8, 10, The reason The connections of channel n+1 are used
three-conductor terminal 12 or 14 pp y the resistance that is connected to
to supply
Thermal resistor 0, 2, 4, 6, 8, 10, channel
h l n.
(linear, four-conductor termi- 12 or 14
nal)
Thermal resistor 0, 2, 4, 6, 8, 10,
(linear, four-conductor termi- 12 or 14
nal)
Thermocouple (linear) 0 to 15 You can select the reference junction. It is only
advisable to specify a reference junction with
thermocouples.

Circuit for Reference Junction Compensation for Thermocouples

If you select “RTD on Channel 0” as a reference junction for reference junction
compensation for thermocouples, the following applies:
Table 5-67 Reference Junction Compensation via RTD on Channel 0 of the SM 431; AI 16 x 16 Bit
Reference Junction Permissible Condition
Parameter for
Channel n
RTD on Channel 0 2 to 15 You must connect and parameterize on channel 0 a
resistance thermometer with linearization, a 3- or
4-conductor terminal in climatic range. This means that
channels 0 and 1 are assigned.
The reason If channel 0 is to be used as the reference
junction, a resistance-type sensor must be connected
there to establish the absolute temperatures in the
climatic range.

Unused Channels
Unused channels can be left open. Set the measuring range modules to position
“A”. You can improve the noise immunity of the module in a measuring environment
with serious interference by short-circuiting the channels.
Disable the “Measuring Type” parameter for unused channels to reduce the scan
cycle time of the module.

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Measuring Ranges
You set the measuring ranges by means of the measuring range modules on the
module and the “Measuring Type” parameter in STEP 7.

Table 5-68 Measuring Ranges of the SM 431; AI 16 x 16 Bit

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
U: Voltage  25 mV A You will find the digitized
 50 mV analog values in Section
5.3.1 in the voltage
 80 mV
measuring range
 250 mV
 500 mV
1V
 2.5 V
5V
1 to 5 V
 10 V
2DMU: Current (two-wire 4 to 20 mA D To supply these transmitters
transmitter) with current you must
connect 24 V to the L+ and
M front connector terminals.
You will find the digitized
analog values in Section
5.3.1 in the current
measuring range
4DMU: Current (four-wire  5 mA C You will find the digitized
transmitter)  10 mA analog values in Section
5.3.1 in the current
0 to 20 mA
measuring range
4 to 20 mA
 20 mA
R-3L: Resistor 300 Ω A You will find the digitized
(three-conductor terminal) 600 Ω analog values in Section
5.3.1 in the resistance
6000 Ω (max. 5000 Ω)
measuring range
R-4L: Resistor 48Ω
(four-conductor terminal) 150 Ω
300 Ω
600 Ω
6000 Ω (max. 5000 Ω)

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Table 5-68 Measuring Ranges of the SM 431; AI 16 x 16 Bit, continued

Method Selected Measuring Range Measuring Range Description

(Type of Sensor) Module Setting
TC-L: Thermocouple Type B A You will find the digitized
(linear) Type N analog values in Section
(temperature 5.3.1 in the temperature
Type E
measurement) range
Type R
Type S
Type J
Type L
Type T
Type K
Type U
RTD-3L: thermal resistor Pt 100 climatic A You will find the digitized
linear, three-conductor Pt 200 climatic analog values in Section
terminal (temperature 5.3.1 in the temperature
Pt 500 climatic
measurement) range
Pt 1000 climatic
Ni 100 climatic
Ni 1000 climatic
RTD-4L: thermal resistor Pt 100 standard
linear, four-conductor Pt 200 standard
terminal (temperature Pt 500 standard
measurement) Pt 1000 standard
Ni 100 standard
Ni 1000 standard

Default Settings
The default measuring method of the module in STEP 7 is “Voltage”, at a range of
“ 10 V”. You can use this combination of measuring method and measuring
range without parameterizing the SM 431; AI 16 x 16 Bit in STEP 7.

Wire Break Check

The wire-break check is intended primarily for temperature measurements (TC,
RTD) or resistance measurements. Always parameterize the wire break check in
these cases as this ensures that in the event of a wire break the measured value
provided by the module accepts the data for overrun 7FFFH.

Special Characteristics of the Wire Break Check for the Voltage Measurement
Methods
In some transmitters, incorrect measured values may occur due to the fact that the
wire break check is enabled. If so, disable the wire-break check.
The reason Some transmitters try to correct the test current and in doing so corrupt
the setpoint value they provide.

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Points to Note About the Wire Break Check when Current Sensors Are
Connected
A wire break check of current sensors is not possible for the SM 431; AI 16 x 16 Bit
except in life-zero areas. You can therefore only parameterize the wire break check
for the “Current (four-wire transmitter)” measuring method and the “4 to 20 mA”
measuring range.

Checking for Reference Channel Errors when Connecting Thermocouples

If you have connected a thermocouple, you can then enable the “Reference
channel error” diagnosis if you have configured an “RTD on Channel 0” or
“Reference Temperature Value” reference junction.

Points to Note About Checking for “Underflow” with some Measuring Methods
and Measuring Ranges
There is now underflow in life-zero areas. A value that is too low or is negative is
interpreted as a wire break. You can therefore not parameterize the underflow
check for the SM 431; AI 16 x 16 Bit for the following measuring methods and
ranges:

Table 5-69 Points to Note when Checking for “Underflow”

Measuring Method Measuring Range

Voltage 1 to 5 V
Current (four-wire transmitter) 4 to 20 mA
Current (two-wire transmitter) 4 to 20 mA

Points to Note About the “Short Circuit to M” Diagnosis

You can only parameterize the check for “Short Circuit to M” for the SM 431;
AI 16 x 16 Bit for the “Current (2-wire transmitter)” measuring method.

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5.23 Analog Input Module SM 431; AI 8 x RTD x 16 Bit;

(6ES7431-7KF10-0AB0)

Characteristics
The analog input module SM 431; AI 8 x RTD x 16 Bit has the following features:
• 8 differential inputs for the resistance thermometer
• Parameters can be assigned to the resistance thermometer
• Linearization of the resistance thermometer characteristic curves
• 16-bit resolution
• Update rate of 25 ms for 8 channels
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt when limit has been exceeded
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channel and the
central ground point is 120 VAC

Calibration Software
The calibration software is only available on the Internet. You can find the current
version under article ID 12443337.
After installing the software, you can define user-specific calibration values for each
channel and and each module input range. You will find further information under
ID 12436891 at the Customer Support FAQ site.

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Block Diagram of the SM 431; AI 8 x RTD x 16 Bit

SO+0
SE+0
SE--0
AGND CH0

CH1

Isolation

CH2

Backplane
A/D bus Bus
CH3 converter interface S7-400

CH4 Internal
voltage
supply

CH5

CH6

SO+7
SE+7
SE--7
AGND CH7

Figure 5-38 Block Diagram of the SM 431; AI 8 x RTD x 16 Bit

Note
An external protective network is required in the signal leads in accordance with
IEC 61000-4-5 (12 V MOV CT19-506, connected in series with all inputs as
recommended by the manufacturer).

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Analog Modules

Terminal Assignment Diagram of the SM 431; AI 8 x RTD x 16 Bit

INTF 1
EXTF 2
3
4
5
6 SE+0
7 SE--0
CH0 Word 0
8 SO0
9 AGND
10
11 SE+1
12 SE--1
CH1 Word 1
13 SO1
14 AGND
15
16 SE+2
17 SE--2
18 CH2 Word 2
SO2
19 AGND
20
21 SE+3
22 SE--3
CH3 Word 3
23 SO3
24 AGND
25
26
27
28 SE+4
29 SE--4
CH4 Word 4
30 SO4
31 AGND
32
33 SE+5
34 SE--5
CH5 Word 5
35 SO5
36 AGND
37
38 SE+6
39 SE--6
CH6 Word 6
40 SO6
41 AGND
42
43 SE+7
44 SE--7
CH7 Word 7
45 SO7
46 AGND
47
48

Figure 5-39 Terminal Assignment Diagram of the SM 431; AI 8 x RTD x 16 Bit

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Technical Specifications of the SM 431; AI 8 x RTD x 16 Bit

Dimensions and Weight Crosstalk between the inputs > 70 dB

Dimensions W x H x D 25 x 290 x 210 Operational limit (over entire temperature range, referred
(in millimeters) to 0 to 60 _C input range)
Weight Approx. 650 g • RTD-Input RTD-4L RTD-3L
Data for Specific Module Pt 100 ±1.8 °C ± 3.4 °C
Pt 200 ± 0.8 °C ± 1.7 °C
Number of inputs 8
Pt 500 ± 0.4 °C ± 0.7 °C
Length of cable Pt 1000 ± 0.3 °C ± 0.4 °C
• Shielded Max. 200 m Ni 100 ± 1.5 °C ± 2.1 °C
Voltages, Currents, Potentials Ni 1000 ± 0.2 °C ± 0.3 °C
Constant current for Max. 1 mA Basic error (operational limit at 25 °C, referred to input
resistance-type sensor range)
Isolation • RTD-Input CRTD-4L RTD-3L
Pt 100 ± 0.5 °C ± 1.0 °C
• Between channels and Yes Pt 200 ± 0.3 °C ± 0.5 °C
backplane bus Pt 500 ± 0.3 °C ± 0.4 °C
Permitted potential difference Pt 1000 ± 0.2 °C ± 0.2 °C
• Between MANA and 120 VAC Ni 100 ± 0.3 °C ± 0.6 °C
Minternal (UISO) Ni 1000 ± 0.2 °C ± 0.2 °C
Insulation tested with 1500 VAC
Current consumption Linearity error (with reference
to the input range) additional error
• From the backplane bus Max. 650 mA
Power dissipation of the Typ. 3.3 W
• RTD-Input RTD-4L RTD-3L
Pt 100 ± 0.2 °C ± 0.3 °C
module
Pt 200 ± 0.2 °C ±0.2 °C
Analog Value Generation Pt 500 ± 0.1 °C ± 0.1 °C
Measuring principle Integrative Pt 1000 ± 0.1 °C ± 0.1 °C
Integration/conversion time/ (Does not go into the Ni 100 ± 0.1 °C ± 0.2 °C
resolution (per channel) response time) Ni 1000 ± 0.1 °C ± 0.1 °C
• Parameterizable Yes Repeat accuracy (in the steady
state at 25 °C, referred to the
• Basic conversion time in 22/25
input range) additional error
ms
• RTD-Input CRTD-4L RTD-3L
• Additional conversion time Max. 200
Pt 100 ± 0.5 °C ± 0.3 °C
for measuring resistance, ± 0.3 °C ± 0.2 °C
Pt 200
in ms ± 0.3 °C ± 0.1 °C
Pt 500
• Resolution including sign 16/16 bit Pt 1000 ± 0.2 °C ± 0.1 °C
± 0.3 °C ± 0.2 °C
• Noise suppression 60/50 Ni 100
± 0.2 °C ± 0.1 °C
for interference frequency Ni 1000
f1 in Hz Status, Interrupts, Diagnostics
Smoothing of the measured Parameters can be Interrupts
values assigned in 4 stages
• Hardware interrupt when Parameters can be
Basic response time of module 22/25 ms limit has been exceeded assigned
(all channels enabled)
• Diagnostic Interrupt Parameters can be
Suppression of interference, Limits of Error assigned
Noise suppression for f = n× (f1 1%), Diagnostic functions Parameters can be
(f1 = interference frequency) n = 1, 2, etc. assigned
• Common-mode • Group error display
interference (UCM < 120V) > 100 dB -- For internal fault Red LED (INTF)
• Series-mode interference > 50 dB -- For external fault Red LED (EXTF)
(peak value of interference
< rated value of the input • Diagnostic information can Possible
range) be displayed

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Data for Selecting a Sensor

Input range (rated values) input
resistance
• Resistance thermometer Pt 100/> 10M
Pt 200/> 10M
Pt 500/> 10M
Pt 1000/> 10M
Ni 100/> 10M
Ni 1000/> 10M
• Maximum input voltage for 35 V continuous;
voltage input (destruction 75 V for max. 1 s
limit) (duty factor 1:20)
Connection of the sensor
• For measuring resistance
With three-conductor Possible
terminal
With four-conductor Possible
terminal
Characteristic linearization Parameters can be
assigned
• For resistance Pt100...1000,
thermometer 0.00385 Alpha to
DIN EN 60751
Ni 100...1000,
0.00618 Alpha to
DIN 43760
1Measuring range
• PT100, PT200
• PT 500 --200 °C to +850 °C
• PT 1000 --200 °C to +800 °C
• NI 100 --200 °C to +240 °C
• NI 1000 --60 °C to +250 °C
--60 °C to +130 °C

Unit for temperature Degrees Celsius;

measurement degrees Fahrenheit

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5.23.1 Commissioning the SM 431; AI 8 x RTD x 16 Bit

You set the mode of operation of the SM 431; AI 8 x RTD x 16 Bit in STEP 7.

Parameters
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-70 Parameters of the SM 431; AI 8 x RTD x 16 Bit

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for 1 to 4 --
Static Module
interrupt
Trigger for hardware
interrupt3)
-- D a i
Dynamic Cha
Channel
l
• High limit 32767 to -- 32768
• Low limit -- 32768 to 32767
Diagnostics
• Wire break Yes/no No
• Underflow Yes/no No
• Overflow Yes/no No
Measurement
• Measuring type Disabled RTD-3L
RTD-4L Thermal resistor
(linear, four-conductor Static Channel
terminal)
RTD-3L Thermal resistor
(linear, three-conductor
terminal)
• Measuring range Refer to Section 5.23.2 for the Pt 100
measuring ranges of the input standard
channels that you can set.
• Temperature unit Degrees Celsius; degrees Degrees
Static Module
Fahrenheit Celsius
• Temperature For platinium (Pt) 0.00385
coefficient for 0.00385 Ω/Ω/ °C
temperature 0.003916 Ω/Ω/ °C
measurement with 0.003902 Ω/Ω/ °C
thermal resistor (RTD) 0.003920 Ω/Ω/ °C Static Channel
For nickel (Ni)
0.00618 Ω/Ω/ °C
0.00672 Ω/Ω/ °C
• Interference 60 Hz; 50 Hz; none 60 Hz
suppression

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Analog Modules

Table 5-70 Parameters of the SM 431; AI 8 x RTD x 16 Bit, continued

Parameter Value Range Default2) Parameter Scope

Type
• Smoothing None None
Low
Static Channel
Average
High

1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.
3) The limit values must be within the temperature range of the connected sensor.

Smoothing of the Measured Values

You fill find information that is generally applicable to the smoothing of analog
values in Section 5.6.
The following figure shows for the module the number of module cycles, in the
case of a step response, after which the smoothed analog value is applied to
almost 100%, depending on the smoothing setting. The figure applies to every
change of signal at an analog input.

Signal variation Step response for any analog input signal

in percent
100

63

50

0 20 40 60 80 100
Smoothing: low:
average: Module cycles
high:
Figure 5-40 Step Response of the SM 431; AI 8 x RTD x 16 Bit

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Displaying Parameter Assignment Errors

The SM 431; AI 8 x RTD x 16 Bit is capable of diagnostics. Below you will find an
overview of the displays that are possible for modules with parameter assignment
errors.

Table 5-71 Diagnostic Information of the SM 431; AI 8 x RTD x 16 Bit

Incorrect Parameter Possible Display Explanation

Assignment
Of the module • Module malfunction You can find an
• Internal malfunction explanation of the
diagnostic information in
• Wrong parameters
Tables 4-7 and 5-46 on
• Module not configured. Pages
g 4-10 and 5-64.
Affecting certain • Module malfunction
channels • Internal malfunction
• There is a channel error
• Wrong parameters
• Channel information available
• Vector channel error
• Channel parameter assignment
error
• User calibration doesn’t
correspond to the parameter
assignment

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Analog Modules

5.23.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 8 x RTD x 16 Bit

Measuring Methods
As the measuring method for the input channels, you can set the temperature
measurement.

Unused Channels
Disable the “Measuring Type” parameter for unused channels. In this way you
shorten the scan time of the module.

Measuring Ranges
You set the measuring ranges with the “Measuring Type” parameter in STEP 7.

Table 5-72 Measuring Ranges of the SM 431; AI 8 x RTD x 16 Bit

Method Selected Measuring Range Description

RTD-3L: Thermal resistor Pt 100 standard You will find the digitized analog values
(linear, three-conductor Pt 200 standard in Section 5.3.1 in the temperature
terminal) range
Pt 500 standard
(temperature
Pt 1000 standard
measurement)
Ni 100 standard
RTD-4L: Thermal resistor
(linear, four-conductor Ni 1000 standard
terminal)
(temperature
measurement)

Default Settings
The default settings of the module in STEP 7 are “Thermal resistor (linear,
3-conductor terminal)” for the measuring method and “Pt 100 standard” for the
measuring range. You can use this measuring method with this measuring range
without parameterizing the SM 431; AI 8 x RTD x 16 Bit with STEP 7.

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5.24 Analog Input Module SM 431; AI 8 x 16 Bit;

(6ES7431-7KF00-0AB0)

Characteristics
The analog input module SM 431; AI 8 x 16 Bit has the following features:
• 8 isolated differential inputs for voltage/current/temperature measurement
• Unlimited measuring range selection
• Linearization of the thermocouple characteristic curves
• 16-bit resolution
• Programmable diagnostics
• Programmable diagnostic interrupt
• Programmable hardware interrupt when limit has been exceeded
• Analog section isolated from CPU
• The maximum permissible common mode voltage between the channels and
between the channel and the central ground point is 120 VAC
• Field connection (6ES7431-7K00-6AA0) with internal reference temperature
(included with the product)

Calibration Software
The calibration software is only available on the Internet. You can find the current
version under article ID 12443337.
After installing the software, you can define user-specific calibration values for each
channel and and each module input range. You will find further information under
ID 12436891 at the Customer Support FAQ site.

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Analog Modules

Block Diagram of the SM 431; AI 8 x 16 Bit

M0+
M0+ A/D
R0 converter

M0-- Internal
supply
CH0

CH1

CH2

CH3
Backplane
bus Bus
interface S7-400

CH4

CH5

CH6

CH7

Figure 5-41 Block Diagram of the SM 431; AI 8 x 16 Bit

Note
An external protective network is required in the signal lines in accordance with
IEC 61000-4-5 (150 V/14 mm MOV across each + and -- input to chassis ground)

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Terminal Assignment Diagram of the SM 431; AI 8 x 16 Bit

Optional connector Connector with Thermocouples

(screw-type) temperature reference Voltage measurement
Current measurement
INTF 1
EXTF 2
3
4
5
6
7
8
9 M0+ M0+
0 M0+ M0+
10 CH0 Word 0
11 R0 R0
12 M0-- M0--
13
14 M1+ M1+
1 M1+ M1+
15 CH1 Word 1
16 R1 R1
17 M1-- M1--
18
19 M2+ M2+
2 M2+ M2+
20
A R2 V R2 CH2 Word 2
21
22 M2-- M2--
23
24 M3+ M3+
3
25 M3+ M3+ CH3 Word 3
26
V R3 V R3
27 M3-- M3--
28
29 M4+ M4+
4 30 M4+ M4+
V R4 A R4 CH4 Word 4
31
32 M4-- M4--
33
34 M5+ M5+
5 M5+ M5+
35
A R5 A R5 CH5 Word 5
36
37 M5-- M5--
38
39 M6+ M6+
6 M6+ M6+
40
Tr Tr CH6 Word 6
41 R6 R6
42 M6-- M6--
43
44 M7+ M7+
7 M7+ M7+
45
Tr R7 Tr R7
CH7 Word 7
46
47 M7-- M7--
48

6ES7492-1AL00-0AA0 6ES7431-7KF00-6AA0

Figure 5-42 Terminal Assignment Diagram SM 431; AI 8 x 16 Bit

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Analog Modules

Technical Specifications of the SM 431; AI 8 x 16 Bit

Dimensions and Weight Suppression of Interference, Limits of Error

Dimensions W x H x D 25 x 290 x 210 Interference voltage suppression
(in millimeters) for f = n x (f1  1%),
(f1 = interference frequency) n= 1.2 ...
Weight Approx. 650 g
• Common-mode
Data for Specific Module interference
Number of inputs 8 (Ucm < 120 V)

Length of cable Current, > 120 dB

• Shielded 200 m thermoelement and
Voltage ranges < 2.5 V
Voltages, Currents, Potentials
Isolation Voltage ranges ≥2.5 V > 95 dB
• Between channels and Yes Crosstalk between
backplane bus inputs (Ucm < 120 V)
• Between the channels Yes
Current, > 120 dB
Permitted potential difference thermoelement and
• Between the inputs (UU ) 120 VAC Voltage ranges ≥2.5 V

• Between MANA and 120 VAC Voltage ranges ≥ 2.5 V > 95 dB

Minternal (UUISO) • Series-mode noise > 80 dB
Insulation tested with 1500 VAC (peak value of noise
< nominal value of
Current consumption input range)
• From the backplane bus Operational limit (in the entire temperature range, with
(5 V) Max. 1200 mA reference to the input range)
Power dissipation of the Typ. 4.6 W • Voltage input  0.30 %
module • Current input  0.50 %
Analog Value Generation • Temperature error (reference to the input
range)2 across the temprature range of:
Measuring principle Integration
Type U
Integration time/conversion (Does not go into the -100 °C to 600 °C ± 3.6 °C
time/resolution (per response time)
Type L
channel)
0 °C to 900 °C ± 2.9 °C
• Parameters can be Yes Type T
assigned -100 °C to 400 °C ± 2.1 °C
• Integration time in 2.5 16.7 20 100 Type J
milliseconds -100 °C to 1200 °C ± 5.0 °C
Type E
• Basic conversion time 10 16.7 20 100 -100 °C to 1000 °C ± 4.6 °C
including integration
time in milliseconds Type K
0 °C to 1372 °C ± 3.8 °C
• Resolution in bits (incl. 16 bits Type N
overrange) 0 °C to 1300 °C ± 5.7 °C
• Noise suppression for 400 60 50 10 Type S
frequency f1 in Hz 200 °C to 1769 °C ± 5.3 °C
Type R
Smoothing of the measured Parameters can be 200 °C to 1769 °C ± 6.7 °C
values assigned in 4
stages Type B
400 °C to 1820 °C ± 7.3 °C
Basic reaction time of 40 67 80 400
module (enable all
channels)

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Suppression of Interference, Limits of Error Status, Interrupts, Diagnostics

Basic error (operational limit at 25 _C, referred to input Interrupts
range) • Hardware interrupt Programmable
• Voltage input  0.10 % • Hardware interrupt on Programmable
• Current input  0.17 % exceeding the limit
• Temperature error value
(reference to the input • Diagnostic interrupt Programmable
range)2 across Diagnostic functions Programmable
temprature range of :
• Group error display Programmable
Type U
-- For internal fault Red LED (INTF)
--100 °C to 600 °C ± 1.2 °C
-- For external fault Red LED (EXTF)
Type L
0 °C to 900 °C ± 1.0 °C • Diagnostic information Yes
Type T can be displayed
--100 °C to 400 °C ± 0.7 °C Monitoring on
Type J • wirebreak
--100 °C to 1200 °C ± 1.7 °C Data for Selecting a Sensor
Type E Input range (rated
--100 °C to 1000 °C ± 1.5 °C values)/Input resistance
Type K • Voltage  25 mV >2 MΩ
0 °C to 1372 °C ± 1.3 °C
 50 mV >2 MΩ
Type N
0 °C to 1300 °C ± 1.9 °C  80 mV >2 MΩ

Type S 100 mV >2 MΩ

200 °C to 1769 °C ± 1.8 °C 250 mV >2 MΩ
Type R 500 mV >2 MΩ
200 °C to 1769 °C ± 2.2 °C 1V >2 MΩ
Type B  2.5 V >2 MΩ
400 °C to 1820 °C ± 2.2 °C
5V >2 MΩ
Linearity error (with Additional error
 10 V >2 MΩ
reference to the input  0.05%
range) • Current ± 20 mA 50 Ω
+ 4 to
Repeatability (in steady Additional error
20 mA 50 Ω
state at 25 _C, with  0.05%
± 10 mA 50 Ω
reference to the input
± 5 mA 50 Ω
range)
± 3,2 mA 50 Ω
Connection for 6ES7431-7KF00-
compensating the cold 6AA0
• Thermocouple Types B, N, E, >2 MΩ
R, S, J, L, T, K,
junction
U
Operational limit
Maximum input voltage for 35 V continuous;
• Error internal Additional error voltage input (destruction 75 V for max. 1 s
temperature ± 2.0 °C limit) (duty factor 1:20)
compensation
Maximum input current for 32 mA
current input (destruction
limit)
Connection of the sensor
• For measuring voltage Possible
• For measuring current
As four-wire transmitter Possible
Characteristic linearization
• For thermocouples Types B, N, E, R, S, J, L,
T, K, U
Temperature compensation Yes, programmable
• Internal temperature Possible
compensation
Unit for temperature Degrees Celsius; degrees
measurement Fahrenheit

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Analog Modules

Notes to the technical specifications

Note
1) The 6ES7431-7KF00-0AB0 does not support the high and low ranges defined
in S7 for thermocouples. When the module reaches the operational limit defined
for S7, the system outputs a corrsponding underflow (32768) or overflow (32767)
signal.

Note
2) Thermocouples can be operated above the specified temperaturs.
• The specified accuracy improves in the lower range and at higher temperature.
• The accuracy of the thermocouple module can be calculated for other
temperature ranges based on the accuracy limit values of the input voltage and
the emf/°C of the thermocouple.

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5.24.1 Commissioning the SM 431; AI 8 x16 Bit

You set the mode of operation of the SM 431; AI 8 x16 Bit in STEP 7.

Parameter
You will find a description of the procedure of assigning parameters to analog
modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.

Table 5-73 Parameters of the SM 431; AI 8 x16 Bit

Parameter Value Range Default2) Parameter Scope

Type
Enable
• Diagnostic interrupt1) Yes/no No Dynamic Module
• Hardware interrupt1) Yes/no No
• Destination CPU for 1 to 4
--
Static Module
interrupt
Trigger for hardware
interrupt3)
Dynamic Channel
• High limit 32767 to --32768 --
--
• Low limit --32768 to 32767
Diagnostics
• Wire break Yes/no No
• Reference channel Yes/no No
Static Channel
error
• Underflow Yes/no No
• Overflow Yes/no No
Measurement
• Measuring method Disabled TC-L
U Voltage
4DMU Current
(four-wire transmitter) Static Channel
TC-L Thermocouple (linear)
• Measuring range Refer to Section 5.24.2 for the Type J
measuring ranges of the input
channels that you can set.
• Reference --273.15 to 327.67 oC 100 oC
Dynamic Module
temperature --327.68 to 327.67 oF
• Temperature unit4) Degrees Celsius; degrees Fahrenheit Degrees
Celsius
• Interference 400 Hz; 60 Hz; 50 Hz; 10 Hz 60 Hz
Static Module
suppression
• Smoothing None, Low, Average, High None

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Analog Modules

Table 5-73 Parameters of the SM 431; AI 8 x16 Bit, continued

Parameter Value Range Default2) Parameter Scope

Type
• Reference junction None Internal Static Module
(reference to the cold Internal
junction) Reference temperature value dynamic
1) If you use the module in ER-1/ER-2, you must set this parameter to “No” because the interrupt lines are
not available in ER-1/ER-2.
2) Only in the CC (central controller) is it possible to start up the analog modules with the default settings.
3) The limit values must be within the temperature range of the connected sensor.
4) Valid for the format of the output temperature and the dynamic reference temperature

Smoothing of the Measured Values

You fill find information that is generally applicable to the smoothing of analog
values in Section 5.6.
The cycle time of the module is a constant in the SM 431; AI 8 x 16 Bit that is not
dependent on the number of channels that are enabled. It therefore has no effect
on the step response, which is defined by the parameter assignment of
interference frequency suppression and smoothing.

Step Response

Table 5-74 How Response Times Depend on the configured Interference Frequency Suppression and
Smoothing of the SM 431; AI 8 x 16 Bit

Interference Frequency Response Time in ms with Configured Smoothing:

S
Suppression
i iin Hz
H
None Low Average High
10 100 200 1600 3200
50 20 40 320 640
60 16.7 33.3 267 533
400 10 20 160 320

The following figures illustrate the contents of Table 5-74. They show the response
time required for a step response before the smoothed analog value is almost
applied to 100%. The figures apply to every change of signal at an analog input.

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Step Response at an Interference Frequency Suppression of 10 Hz

Signal variation Step response for any analog input signal

in percent
100

Smoo-
thing:
None:
Low:
Average:
High:

0 800 1600 2400 3200

100 Response time in ms
200

Figure 5-43 Step Response at 10 Hz Interference Frequency Suppression of the SM 431;

AI 8 x 16 Bit

Step Response at an Interference Frequency Suppression of 50 Hz

Signal variation Step response for any analog input signal

in percent
100

Smoo-
thing:
None:
Low:
Average:
High:

0 40 80 160 240 320 400 480 560 640

20 Response time in ms

Figure 5-44 Step Response at 50 Hz Interference Frequency Suppression of the SM 431;

AI 8 x 16 Bit

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Analog Modules

Step Response at an Interference Frequency Suppression of 60 Hz

Signal variation Step response for any analog input signal

in percent
100

Smoo-
thing:
None:
Low:
Average:
High:

0 80 160 240 320 400 480 560 640

16.7 267 533 Response time
33.3 in ms

Figure 5-45 Step Response at 60 Hz Interference Frequency Suppression of the SM 431;

AI 8 x 16 Bit

Step Response at an Interference Frequency Suppression of 400 Hz

Signal variation Step response for any analog input signal

in percent
100

Smoo-
thing:
None:
Low:
Average:
High:

0 80 160 240 320 400 480 560 640

10 Response time in ms
20

Figure 5-46 Step Response at 400 Hz Interference Frequency Suppression of the

SM 431; AI 8 x 16 Bit

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Displaying Parameter Assignment Errors

The SM 431; AI 8 × 16 Bit has diagnostics capability. Below you will find an
overview of the displays that are possible for modules with parameter assignment
errors.

Table 5-75 Diagnostic Information of the SM 431; AI 8 × 16 Bit

Incorrect Parameter Possible Display Explanation

Assignment
Of the module • Module malfunction You can find an
• Internal malfunction explanation of the
diagnostic information in
• Wrong parameters
Tables 4-7 and 5-46 on
• Module not configured. Pages
g 4-10 and 5-64.
Affecting certain • Module malfunction
channels • Internal malfunction
• There is a channel error
• Wrong parameters
• Channel information available
• Vector channel error
• Channel parameter assignment
error
• User calibration doesn’t
correspond to the parameter
assignment

5.24.2 Measuring Methods and Measuring Ranges of the SM 431;

AI 8 x 16 Bit

Measuring Methods
You can set the following measuring methods for the input channels:
• Voltage measurement
• Current measurement
• Temperature measurement
You specify the setting by means of the “Measuring Type” parameter in STEP 7.

Unused Channels
Disable the “Measuring Type” parameter for unused channels. In this way you
shorten the scan time of the module.

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Analog Modules

Measuring Ranges
You set the measuring ranges by means of the “Measuring Range” parameter in
STEP 7.

Table 5-76 Measuring Ranges of the SM 431; AI 8 x 16 Bit

Method Selected Measuring Range Description

U: Voltage 25 mV You will find the digitized analog
50 mV values in Section 5.3.1 in the
voltage measuring range
80 mV
100 mV
250 mV
500 mV
1 V
2.5 V
5 V
10 V
1 to 5 V
4DMU: Current (four-wire 3.2 mA You will find the digitized analog
transmitter) 5 mA values in Section 5.3.1 in the
current measuring range
10 mA
20 mA
0 to 20 mA
4 to 20 mA
TC-L: Thermocouple (linear) Type B You will find the digitized analog
(temperature measurement) Type N values in Section 5.3.1 in the
temperature range
Type E
Type R
Type S
Type J
Type L
Type T
Type K
Type U

Default Settings
The default settings of the module in STEP 7 are “Thermocouple (linear)” for the
measuring method and “Type J” for the measuring range. You can use this
combination of measuring method and measuring range without parameterizing the
SM 431; AI 8 x 16 Bit in STEP 7.

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 Analog Modules

5.25 Analog Output Module SM 432; AO 8 x 13 Bit;

(6ES7432-1HF00-0AB0)

Characteristics
The SM 432; AO 8 x 13 Bit has the following features:
• 8 outputs
• The individual output channels can be programmed as
-- Voltage outputs
-- Current outputs
• 13-bit resolution
• Analog section Isolated to CPU and load voltage
• Maximum permissible common mode voltage between the channels and the
channels against MANA is 3 VDC

Block Diagram of the SM 432; AO 8 x 13 Bit

CH0
A

CH1

Bus S7-400 CH2

Bus control

CH3

CH4

CH5
D

CH6

CH7

24 V

L+/M
Analog supply

Figure 5-47 Block Diagram of the SM 432; AO 8 x 13 Bit

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Analog Modules

Terminal Assignment Diagram of the SM 432; AO 8 x 13 Bit

Voltage output Current output

1
2
3
L+ L+ L+
4
5
6 QV0 CH0 Word 0 QI0 CH0 Word 0
7 S0+
8 S0--
9
10
11 QV1 CH1 Word 2 QI1 CH1 Word 2
12 S1+
13 S1--
14
15
16 QV2 CH2 Word 4 QI2 CH2 Word 4
17 S2+
18 S2--
19
20
21 QV3 CH3 Word 6 QI3 CH3 Word 6
22 S3+
23 S3--
24
25 MANA M ANA M ANA
26
27
28 QV4 CH4 Word 8 QI4 CH4 Word 8
29 S4+
30 S4--
31
32
33 QV5 CH5 Word 10 QI5 CH5 Word 10
34 S5+
35 S5--
36
37
38 QV6 CH6 Word 12 QI6 CH6 Word 12
39 S6+
40 S6--
41
42
43 QV7 CH7 Word 14 QI7 CH7 Word 14
44 S7+
45 S7--
46
47
M
48 M M

Figure 5-48 Terminal Assignment Diagram of the SM 432; AO 8 x 13 Bit

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 Analog Modules

Technical Specifications of the SM 432; AO 8 x 13 Bit

Dimensions and Weight Analog Value Generation

Dimensions W x H x D 25 x 290 x 210 Resolution including sign 13 bits
(in millimeters)
Conversion time (per channel)
Weight Approx. 650 g
• In the ranges 1 V to 5 V 420 ms
Data for Specific Module and 4 mA to 20 mA
Number of outputs 8 • In all ranges 300 ms
Length of cable Basic response time of module
• Shielded Max. 200 m (all channels enabled)

Voltages, Currents, Potentials • In the ranges 1 V to 5 V 3.36 ms

and 4 mA to 20 mA
Supply voltage of the 24 VDC
electronics L+ • In all the other ranges 2.4 ms

Rated load voltage L+ 24 VDC Settling time

• Reverse polarity protection Yes • For resistive load 0.1 ms

Isolation
• For capacitive load 3.5 ms
• For inductive load 0.5 ms
• Between channels and Yes
backplane bus Suppression of Interference, Limits of Error
• Between the channels No Interference voltage suppression for f = n x (f1  1%),
• Between channels and Yes (f1 = interference frequency) n= 1.2 ...
load voltage L+ • Common-mode >60 dB
Permitted potential difference interference
(UCM < AC 3 Vss/50 Hz)
• Between the outputs (ECM) 3 VDC
• Between S-- and MANA Crosstalk between the outputs > 40 dB
(UCM) 3 VDC Operational limit (in the entire temperature range, with
• Between MANA and reference to the output range)
Minternal (UISO) 75 VDC/60 VAC • Voltage outputs
Insulation tested --  10 V  0.5 %
• Between bus and L+/M 2120 VDC -- 0 V to 10 V  0.5 %
• Between bus and analog -- 1 V to 5 V  0.5 %
section 2120 VDC
• Between bus and chassis 500 VDC
• Current outputs
ground --  20 mA  1%
• Between analog section 707 VDC -- 4 mV to 20 mV  1%
and L+/M
Basic error (operational limit at 25 °C, referred to the
• Between analog section 2120 VDC output range)
and chassis ground
• Between L+/M and chassis 2120 VDC
• Voltage outputs
ground --  10 V  0.5%
Current consumption -- 0 V to 10 V  0.5%
• From the backplane bus Max. 150 mA -- 1 V to 5 V  0.5%

• Power supply and load Max. 400 mA • Current outputs

voltage L+ (with rated load) --  20 mA  0.5%
• Power supply and load Max. 200 mA -- 0 mA to 20 mA  0.5%
voltage L+ (no load)
Temperature error (with  0.02% K
Power dissipation of the Typ. max. 9 W reference to the output range)
module
Linearity error (with reference  0.05%
to the output range)

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Analog Modules

Repeat accuracy (in the steady  0.05% Destruction limit for voltages/
state at 25 °C, referred to the currents connected from
output range) outside
Output ripple; band width 0 to  0.05% • Voltage at outputs to MANA Max. 20 V continuous
50 kHz (with reference to the 75 V for 1 ms (cycle
output range) factor 1 : 20)
Status, Interrupts, Diagnostics • Current Max. 40 mA
Interrupts None continuous

Diagnostic functions None Connection of actuators

Substitute value can be applied No • For voltage output

Data for Selecting an Actuator -- Two-conductor Possible, without

connection compensation for
Output ranges (rated values) circuit resistance
• Voltage  10 V
0 V to 10 V -- Four-conductor Possible
1 V to 5 V connection
(measuring circuit)
• Current  20 mA
0 mA to 20 mA • For current output
4 mA to 20 mA -- Two-conductor Possible
Load resistance (in the nominal connection
range of the output)
• For voltage outputs Min. 1 kΩ
-- capacitive load Max. 1 mF
• For current outputs Max. 500 Ω
600 Ω with reduced
UCM to < 1 V
-- Inductive load Max. 1 mH
Voltage outputs
• Short-circuit protection Yes
• Short-circuit current Max. 30 mA
Current outputs
• No-load voltage Max. 19 V

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5.25.1 Commissioning the SM 432; AO 8 x 13 Bit

Parameter
You will find a description of the procedure of assigning parameters to analog
modules in Section 5.7.
You will find an overview of the programmable parameters and their default values
in Table 5-42, on page 5-41.

Assigning Parameters to Channels

You can configure each output channel of the SM 432; AO 8 x 13 Bit individually.
You can thus assign different parameters to each output channel.

5.25.2 Output Ranges of the Analog Output Module SM 432;

AO 8 x 13 Bit

Wiring the Analog Outputs

You can wire the outputs as voltage or current outputs, or disable them. You wire
the outputs by means of the “Type of Output” parameter in STEP 7.

Unused Channels
To ensure that output channels of the SM 432; AO 8 x 13 Bit remain de-energized,
you must disable the “Type of Output” parameter and leave the terminal open.

Output Ranges
You program the output ranges for voltage and current outputs in STEP 7.

Table 5-77 Output Ranges of the Analog Output Module SM 432; AO8 x 13 Bit

Selected Type of Output Output Range Description

Voltage 1 to 5 V You will find the digital
0 to 10 V analog values in Section
10 V 5.3.2 in the voltage and
currentt output
t t ranges
Current 0 to 20 mA
4 to 20 mA
20 mA

Default Settings
The default settings of the module are “Voltage” for the output type and “ 10 V”
for the output range. You can use this combination of output type and output range
without parameterizing the SM 432; AO 8 x 13 Bit in STEP 7.

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Analog Modules

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Chapter Overview
Section Description Page
6.1 Common Features of the Interface Modules 6-2
6.2 The Interface Modules IM 460-0; (6ES7460-0AA01-0AB0) and 6-7
IM 461-0; (6ES7461-0AA01-0AA0)
6.3 The Interface Modules IM 460-1; (6ES7460-1BA01-0AB0) and 6-10
IM 461-1; (6ES7461-1BA01-0AA0)
6.4 The Interface Modules IM 460-3; (6ES7460-3AA01-0AB0) and 6-14
IM 461-3; (6ES7461-3AA01-0AA0)
6.5 The Interface Modules IM 460-4; (6ES7460-4AA01-0AB0), 6-18
IM 461-4; (6ES7461-4AA01-0AA0)

You will find a description of the IM 463-2 in Chapter 7.

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Interface Modules

6.1 Common Features of the Interface Modules

Function
Interface modules (a send IM and a receive IM) are required if one or more
expansion units (EU) are to be connected to a central controller (CC). This
configuration is described in the Installation Manual, Chapter 4.

Configuration
Interface modules must always be used together. The send modules (send IMs)
are inserted in the CC, whilst the corresponding receive modules (receive IMs) are
plugged into the series-connected EU.

Table 6-1 Interface Modules of the S7-400

Partner Areas of Application

IM 460-0 Send IM for local link without PS transfer; with communication bus

IM 461-0 Receive IM for local link without PS transfer; with communication bus

IM 460-1 Send IM for local link with PS transfer; without communication bus

IM 461-1 Receive IM for local link with PS transfer; without communication bus

IM 460-3 Send IM for remote link up to 102.25 m; with communication bus

IM 461-3 Receive IM for remote link up to 102.25 m; with communication bus

IM 460-4 Send IM for remote link up to 605 m; without communication bus

IM 461-4 Receive IM for remote link up to 605 m; without communication bus

Overview of the Properties of the Connections

Note the rules for connections in the section after next.

Table 6-2 Overview of the connections

Local connection Remote connection

Send IM 460-0 460-1 460-3 460-4
Receive IM 461-0 461-1 461-3 461-4
Max. number of connectable EMs per
4 1 4 4
chain
Max. distance 5m 1.5 m 102.25 m 605 m
5 V transfer No Yes No No
Max. current transfer per interface -- 5A -- --
Communication bus transmission Yes No Yes No

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 Interface Modules

Connection possibilities for central racks and expansion racks

IM 460-4
IM 460-3
IM 460-1
IM 460-0
Central rack CR

Expansion without 5 V local transfer

Expansion rack ER 1 Expansion rack ER 4

IM 461-0 IM 461-0

Chain length max. 5 m

Expansion with 5 V local transfer

Expansion rack ER 1

IM 461-1

Chain length max. 1.5 m

Remote expansion
Expansion rack ER 1 Expansion rack ER 4

IM 461-3 IM 461-3

Chain length max. 102.25 m

Expansion rack ER 1 Expansion rack ER 4

IM 461-4 IM 461-4

Chain length max. 605 m

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Interface Modules

Rules for Connection

When you connect a central rack to expansion racks, you must observe the
following rules:
• You can connect up to 21 ERs of the S7-400 to one CR.
• The ERs are assigned numbers to identify them. The rack number must be set
on the coding switch of the receive IM. Any rack number between 1 and 21 may
be assigned. Numbers must not be duplicated.
• You may insert up to six send IMs in one CR. However, only two send IMs with
5 V transfer are allowed in one CR.
• Each chain connected to the interface of a send IM can comprise up to four ERs
(without 5 V transfer) or one ER (with 5 V transfer).
• The exchange of data via the communication bus is limited to 7 racks, meaning
the CR and ER numbers 1 to 6.
• The maximum (total) cable lengths specified for the type of connection must not
be exceeded.

Table 6-3 Cable for different connections

Connection type Maximum (total) line

length
Local connection with 5 V transfer via IM 460-1 and IM 461-1 1.5 m
Local connection without 5 V transfer via IM 460-0 and IM 461-0 5m
Remote connection via IM 460-3 and IM 461-3 102.25 m
Remote connection via IM 460-4 and IM 461-4 605 m

Terminator
The bus must be terminated in the last EU of a line. To do this, plug in the
appropriate terminator in the lower front connector of the receive IM in the last EU
of the line. Unused front connectors in a send IM do not have to be terminated. The
IM 461-1 does not require a terminator.

Table 6-4 Terminators for the Receive IMs

Receive IM Terminator
IM 461-0 6ES7461-0AA00-7AA0
IM 461-3 6ES7461-3AA00-7AA0
IM 461-4 6ES7461-4AA00-7AA0

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 Interface Modules

The following figure shows you a typical configuration with send IMs, receive IMs
and terminators.

Receive IM

Terminator
Receive IM

Send IM

CC

Figure 6-1 Example: Configuration with Send IMs, Receive IMs and Terminators

Connecting Cable
Precut cables are available in different fixed lengths for connecting the individual
interface modules. (See Appendix C: Accessories and Spare Parts)

Table 6-5 Connecting Cable for Interface Modules

Interface Modules Connecting Cable

IM 460-0 and IM 461-0 6ES7468-1... (P bus and communication bus are
IM 460-3 and IM 461-3 transferred)

IM 460-1 and IM 461-1 6ES7468-3... (P bus is transferred; mounting rack is

supplied with current via the IM)
IM 460-4 and IM 461-4 6ES7468-1...

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Interface Modules

Installation and Removal of the Modules During Operation

Please read the following warning on the insertion and removal of the interface
modules and associated connecting cables.

Caution
! Data may be lost or corrupted.
Removing or inserting the interface modules and/or their associated connecting
cables under voltage can result in the loss or corruption of data.
Switch off the power supply modules to the CC and EUs you are working on
before you carry out any changes.

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 Interface Modules

6.2 The Interface Modules

IM 460-0; (6ES7460-0AA01-0AB0) and IM 461-0;
(6ES7461-0AA01-0AA0)

Position of the Operator Controls and Indicators of the IM 460-0 and IM 461-0

IM 460-0 IM 461-0

LEDs
EXTF INTF
C1 EXTF
C2

DIP switch

Under cover

Connector X1:

Interface C1 IN

Connector X2:

Interface C2 OUT

Figure 6-2 Position of the Operator Controls and Indicators of the IM 460-0 and IM 461-0

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Interface Modules

Function
The interface module pair IM 460-0 (send IM) and IM 461-0 (receive IM) are used
for a local link.

Parameter Assignment for the Mounting Rack Number

Using the DIP switch on the front panel of the module, you must set the number of
the mounting rack in which the receive IM is installed. The permitted range is 1 to
21.

Setting/Changing the Number

Proceed as follows:
1. Put the switch of the power supply module in the EU in which you want to make
a change in the position (Output voltage 0 V).
2. Enter the number using the DIP switch.
3. Switch the power supply module on again.

Operator Controls and Indicators on the Send IM

Table 6-6 Operator controls and Indicators on Send IM

EXTF LED Lights up in the event of an external fault Line 1 or line 2 is faulty
(red) (terminator missing or broken cable)
C1 LED Line 1 (via front connector X1, connection 1) is correct.
(green)
C1 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process
C2 LED Line 2 (via front connector X2, connection 2) is correct.
(green)
C2 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process
Front Connector (output) for line 1 and line 2
connectors X1 X1 = upper front connector; X2 = lower front connector
and X2

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 Interface Modules

Operator Controls and Indicators of the Receive IM

Table 6-7 Operator controls and Indicators on Receive IM

INTF LED (red) Lights up if a rack number > 21 or = 0 was set.

Lights up if you have changed the rack number under voltage.
EXTF LED (red) Lights up in the event of an external fault (line fault, for example, if
the terminator is not inserted or if a module has not yet completed
the initialization process).
DIP switch DIP switch to set the number of the mounting rack.
Front connector X1 Upper connector (input) for the connecting cable from the previous
interface module.
Front connector X2 Lower connector (output) for the connecting cable to the next
interface module or for the terminator.

Technical Specifications of the IM 460-0 and IM 461-0

Maximum line length (total) 5m

Dimensions W x H x D (mm) 25 x 290 x 280
Weight
• IM 460-0 600 g
• IM 461-0 610 g
Current consumption from the S7-400
bus 5 VDC Typ. 130 mA
• IM 460-0 Max. 140 mA
Typ. 260 mA
• IM 461-0 Max. 290 mA
Power loss
• IM 460-0 Typ. 650 mW
Max. 700 mW
• IM 461-0 Typ. 1300 mW
Max. 1450 mW
Terminator 6ES7461-0AA00-7AA0
Backup current No

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Interface Modules

6.3 The Interface Modules IM 460-1;

(6ES7460-1BA01-0AB0) and IM 461-1;
(6ES7461-1BA01-0AA0)

Position of the Operator Controls and Indicators of the IM 460-1 and IM 461-1

IM 460-1 IM 461-1

LEDs
EXTF INTF
C1 EXTF
C2

5 VDC

DIP switch

Under cover

Connector X1:

Interface C1 IN

Connector X2:

Interface C2

Figure 6-3 Position of the Operator Controls and Indicators of the IM 460-1 and IM 461-1

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 Interface Modules

Function
The interface module pair IM 460-1 (send IM) and IM 461-1 (receive IM) are used
for a local link (up to a maximum 1.5 m in total). A 5 V supply voltage is also
transferred with these interface modules. Please particularly remember the
following points:
• The current requirements of the module plugged into the EU must not exceed
5 V/5 A.
• You can only connect one EU per line.
• The modules in this mounting rack are not supplied with 24 V and are not
backed up.
• The communication bus is not transferred with the interface module pair
IM 460-1 and IM 461-1.
• You must not use a power supply module in the EU.

Note
If you connect an EU via a local link with 5 V transmission, ungrounded operation
is prescribed for the EU (see Installation Manual, Chapter 4)

Parameter Assignment for the Mounting Rack Number

Using the DIP switch on the front panel of the module, you must set the number of
the mounting rack in which the receive IM is installed. The permitted range is
1 to 21.

Setting/Changing the Number

Proceed as follows:

1. Put the power supply module in the CC into the position (Output voltage 0 V).
2. Enter the number using the DIP switch.
3. Switch the power supply module on again.

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Interface Modules

Operator Controls and Indicators on the Send IM

Table 6-8 Operator controls and indicators on the Send IM

EXTF LED Lights up in the event of an external fault Line 1 or line 2 is faulty
(red) (terminator missing or open circuit)
C1 LED Line 1 (via front connector X1, connection 1) is correct.
(green)
C1 LED A module has not yet completed the initialization process
(flashing
green)
C2 LED Line 2 (via front connector X2, connection 2) is correct.
(green)
C2 LED A module has not yet completed the initialization process
(flashing
green)
Front Connector (output) for line 1 and line 2
connectors X1 X1 = upper front connector; X2 = lower front connector
and X2

Operator Controls and Indicators of the Receive IM

Table 6-9 Operator controls and indicators on the Receive IM

INTF LED (red) Lights up if a rack number > 21 or = 0 was set.

Lights up if you have changed the rack number under voltage.
EXTF LED Lights up in the event of an external fault (line fault, for example, if the
(red) terminator is not inserted or if a module has not yet completed the
initialization process, but not when the CC is switched off)
5 VDC (green) Power supply in the EU is correct.
DIP switch DIP switch to set the number of the mounting rack.
Front Upper connector (input) for the connecting cable from the previous
connector X1 interface module.

Caution
! Modules can be damaged.
If you want to connect an EU via the IM 461-1 interface module and use a power
supply module in this EU, you might damage the modules.
Don’t use a power supply module in an EU that you want to connect to the CC via
the IM 461-1 interface module.

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 Interface Modules

Technical Specifications of the IM 460-1 and IM 461-1

Maximum line length (total) 1.5 m

Dimensions W x H x D (mm) 25 x 290 x 280
Weight
• IM 460-1 600 g
• IM 461-1 610 g
Current consumption from the S7-400
bus 5 VDC Typ. 50 mA max. 85 mA
• IM 460-1 Typ. 120 mA max. 100 mA
• IM 461-1
Power loss
• IM 460-1 Typ. 250 mW max. 425 mW
• IM 461-1 Typ. 500 mW max. 600 mW
Power supply for EU 5 V/5 A per line
Backup current No

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Interface Modules

6.4 The Interface Modules IM 460-3;

(6ES7460-3AA01-0AB0) and IM 461-3;
(6ES7461-3AA01-0AA0)

Position of the Operator Controls and Indicators of the IM 460-3 and IM 461-3

IM 460-3
IM 461-3

LEDs
EXTF INTF
C1 EXTF
C2

DIP switch

Under cover

Connector X1:

Interface C1 IN

Connector X2:

Interface C2 OUT

Figure 6-4 Position of the Operator Controls and Indicators of the IM 460-3 and IM 461-3

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 Interface Modules

Function
The interface module pair IM 460-3 (send IM) and IM 461-3 (receive IM) are used
for a remote link of up to a maximum 102.25 m (exactly: 100 m plus inputs/outputs
of 0.75 m in the line).

Parameter assignment
Using the DIP switch on the front panel of the module, you must set the number of
the mounting rack that the receive IM is installed on. The permitted range is
1 to 21.
If required, you can change the distance setting for the line on the programming
device using STEP 7.
The default setting for the distance is 100 m.
Ensure that the distance corresponds as closely as possible to the current length
(the sum of all the connecting cables per line) as this will accelerate data
transmission.

Note
The distance set must always be longer than the actual length of cable per line.

Setting/Changing the Number

Proceed as follows:
1. Put the switch of the power supply module in the EU in which you want to make
a change in the position (Output voltage 0 V).
2. Enter the number using the DIP switch.
3. Switch the power supply module on again.

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Interface Modules

Operator Controls and Indicators on the Send IM

Table 6-10 Operator controls and indicators on the Send IM

EXTF LED Lights up in the event of an external fault Line 1 or line 2 is faulty
(red) (terminator missing or broken cable)
C1 LED Line 1 (via front connector X1, connection 1) is correct.
(green)
C1 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process
C2 LED Line 2 (via front connector X2, connection 2) is correct.
(green)
C2 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process

Operator Controls and Indicators of the Receive IM

Table 6-11 Operator controls and indicators on the Receive IM

INTF LED (red) Lights up if a rack number > 21 or = 0 was set.

Lights up if you have changed the rack number under voltage.
EXTF LED (red) Lights up in the event of an external fault (line fault, for example, if
the terminator is not inserted or if a module has not yet completed
the initialization process, or if the CC is switched off)
DIP switch DIP switch to set the number of the mounting rack.
Front connector X1 Upper connector (input) for the connecting cable from the previous
interface module.
Front connector X2 Lower connector (output) for the connecting cable to the next
interface module or for the terminator.

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Technical Specifications of the IM 460-3 and IM 461-3

Maximum line length (total) 102 m

Dimensions W x H x D (mm) 25 x 290 x 280
Weight
• IM 460-3 630 g
• IM 461-3 620 g
Current consumption from the S7-400
bus 5 VDC Typ. 1350 mA
• IM 460-3 Max. 1550 mA
Typ. 590 mA
• IM 461-3 Max. 620 mA
Power loss
• IM 460-3 Typ. 6750 mW
Max. 7750 mW
• IM 461-3 Typ. 2950 mW
Max. 3100 mW
Terminator 6ES7461-3AA00-7AA0
Backup current No

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Interface Modules

6.5 The Interface Modules

IM 460-4; (6ES7460-4AA01-0AB0) and
IM 461-4; (6ES7461-4AA01-0AA0)

Position of the Operator Controls and Indicators of the IM 460-4 and IM 461-4

6ES7461-4AA01-0AA0
IM 460-4 IM 461-4

LEDs
EXTF INTF
C1 EXTF
C2

DIP switch

Under cover

Connector X1:

Interface C1 IN

Connector X2:

Interface C2 OUT

Figure 6-5 Position of the Operator Controls and Indicators of the IM 460-4 and IM 461-4

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 Interface Modules

Function
The interface module pair IM 460-4 (send IM) and IM 461-4 (receive IM) are used
for a remote link of up to a maximum 605 m (exactly: 600 m plus inputs/outputs of
1.5 m in the line).

Parameter assignment
Using the DIP switch on the front panel of the module, you must set the number of
the mounting rack in which the receive IM is installed. The permitted range is
1 to 21.
If required, you can change the distance setting for the line on the programming
device using STEP 7.
The default setting for the distance is 600 m.
Ensure that the distance corresponds as closely as possible to the current length
(the sum of all the connecting cables per line) as this will accelerate data
transmission.

Note
The distance set must always be longer than the actual length of cable per line.

Setting/Changing the Number

Proceed as follows:
1. Put the switch of the power supply module in the EU in which you want to make
the change in the position (Output voltage 0 V).
2. Enter the number using the DIP switch.
3. Switch the power supply module on again.

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A5E00267842-02 6-19
Interface Modules

Operator Controls and Indicators on the Send IM

Table 6-12 Operator controls and indicators on the Send IM

EXTF LED Lights up in the event of an external fault Line 1 or line 2 is faulty
(red) (terminator missing or broken cable)
C1 LED Line 1 (via front connector X1, connection 1) is correct.
(green)
C1 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process
C2 LED Line 2 (via front connector X2, connection 2) is correct.
(green)
C2 LED An EU in the line is not ready for operation because
(flashing • The power supply module is not switched on or
green)
• A module has not yet completed the initialization process

Operator Controls and Indicators of the Receive IM

Table 6-13 Operator controls and indicators on the Receive IM

INTF LED (red) Lights up if a rack number > 21 or = 0 was set.

Lights up if you have changed the rack number under voltage.
EXTF LED (red) Lights up in the event of an external fault (line fault, for example, if
the terminator is not inserted or if a module has not yet completed
the initialization process, or if the CC is switched off)
DIP switch DIP switch to set the number of the mounting rack.
Front connector X1 Upper connector (input) for the connecting cable from the previous
interface module.
Front connector X2 Lower connector (output) for the connecting cable to the next
interface module or for the terminator.

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6-20 A5E00267842-02
 Interface Modules

Technical Specifications of the IM 460-4 and IM 461-4

Maximum line length (total) 605 m

Dimensions W x H x D (mm) 25 x 290 x 280
Weight
• IM 460-4 630 g
• IM 461-4 620 g
Current consumption from the S7-400
bus 5 VDC Typ. 1350 mA
• IM 460-4 Max. 1550 mA
Typ. 590 mA
• IM 461-4 Max. 620 mA
Power loss
• IM 460-4 Typ. 6750 mW
Max. 7750 mW
• IM 461-4 Typ. 2950 mW
Max. 3100 mW
Terminator 6ES7461-4AA00-7AA0
Backup current No

Compatibility
You cannot use the IM 460-4 and IM 461-4 interface modules with CPUs that have
the following order numbers:
• 6ES7412-1XF00-0AB0
• 6ES7413-1XG00-0AB0
• 6ES7413-2XG00-0AB0
• 6ES7414-1XG00-0AB0
• 6ES7414-2XG00-0AB0
• 6ES7416-1XJ00-0AB0

Automation System S7-400 Module Specifications

A5E00267842-02 6-21
Interface Modules

Automation System S7-400 Module Specifications

6-22 A5E00267842-02
IM 463-2 7
Chapter Overview

Section Description Page

7.1 Using SIMATIC S5 Expansion Units in an S7-400 7-2
7.2 Rules for Connecting S5 Expansion Units 7-3
7.3 Operator Controls and Indicators 7-4
7.4 Installing and Connecting the IM 463-2 7-6
7.5 Setting the Operating Modes of the IM 314 7-8
7.6 Configuring S5 Modules for Operation in the S7-400 7-10
7.7 Pin Assignments of the 721 Connecting Cable 7-11
7.8 Terminating Connector for IM 314 7-13
7.9 Technical Specifications 7-14

Order Number

IM 463-2 6ES7463-2AA00-0AA0

Automation System S7-400 Module Specifications

A5E00267842-02 7-1
IM 463-2

7.1 Using SIMATIC S5 Expansion Units in an S7-400

Area of Application
The IM 463-2 interface module is used for distributed connection of S5 expansion
units to an S7-400.
You can use the IM 463-2 in the CR of the S7-400. In the S5 expansion unit, you
use an IM 314.
This allows you to connect the following S5 expansion units to an S7-400:
• EU 183U
• EU 185U
• EU 186U
• ER 701-2
• ER 701-3
Accordingly, you can use all digital and analog I/O modules suitable for these EUs
or ERs.

Basic Requirement
If you connect an S5 expansion unit to a CR of the S7-400 via an IM 463-2, the
SIMATIC S5 basic requirements concerning EMC, ambient conditions, etc., apply
for the overall system.

Note
In environments contaminated by radiated noise, you must apply the type 721
cable shield (see Installation Manual, Chapter 4).

Expanding the Distributed Connection

You can also centrally expand the EUs connected in a distributed configuration via
an IM 463-2. The following table lists the S5 interface modules that you can use for
this purpose.

Table 7-1 S5 Interface Modules

Module Order Number

IM 300 6ES5300-5CA11
6ES5300-3AB11
6ES5300-5LB11
IM 306 6ES5306-7LA11

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7-2 A5E00267842-02
 IM 463-2

7.2 Rules for Connecting S5 Expansion Units

Introduction
When you connect S5 expansion units to an S7-400 via the IM 463-2, there are
rules to observe with regard to cable length, maximum expansion, use of a
terminating connector and permissible potential differences.

Cable Length
The maximum cable length per IM 463-2 from the CR of the S7-400 to the last
S5 expansion unit is 600 m. You set the actual cable length at the IM 463-2
(see Section 7.3).

Maximum Expansion
You can use up to four IM 463-2s in one S7-400 CR.
At each IM 463-2 interface (C1 and C2), you can connect up to four S5 expansion
units in a distributed configuration.
You can connect further EUs centrally to the EUs connected in the distributed
configuration.

Addressing of the S5 modules

All S5 address areas are available (P, Q, IM3, IM4)

Note
Note that every S5 address can only be used once, even across different chains.

Terminating Connector
You must terminate the IM 314 of the last EU in each chain with the
6ES5760-1AA11 terminating connector.

Permissible Potential Differences

For the safe functioning of the distributed configuration, you must ensure that the
potential difference between two devices is not more than 7 V. Use an equipotential
bonding conductor.

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A5E00267842-02 7-3
IM 463-2

7.3 Operator Controls and Indicators

Introduction
All controls and indicators on the IM 463-2 are arranged on the front plate. The
following figure shows the arrangement of the controls and indicators.

LEDs EXTF, C1, C 2

Interface selector switch

Cable length selector switch

X1 connector
C1 interface

X2 connector
C2 interface

Figure 7-1 Layout of the Controls and Indicators of the IM 463-2

Automation System S7-400 Module Specifications

7-4 A5E00267842-02
 IM 463-2

LEDs

Table 7-2 LEDs of the IM 4632

LED Meaning
LED EXTF (red) Lights up in the event of an external fault. Chain 1 or chain 2 has a
fault (power supply failed in the EU; terminating connector missing;
wire break, or interface selector switch wrongly set).
LED C1 (green) Chain 1 (via front connector X1, connection 1) is in order.
LED C2 (green) Chain 2 (via front connector X2, connection 2) is in order.
Front connector X1 Connector plug (output) for chain 1 and chain 2.
and X2 X1 = upper front connector; X2 = lower front connector

Interface Selector Switch

Table 7-3 Switch Position: Interface Selector of the IM 463-2

Switch Position Meaning

C1 ON You use only interface C1.
C2 ON You use only interface C2.
C1, C2 ON You use both interfaces.
C1, C2 OFF You use neither of the two interfaces.
You do not want to operate an S5 EU at present.

Cable Length Selector Selector

Table 7-4 Switch Position: Cable Length Selector of the IM 463-2

Switch Position Meaning

100 Cable length 1 to 100 m
250 Cable length 100 to 250 m
450 Cable length 250 to 450 m
600 Cable length 450 to 600 m

Warning
! Danger of data loss.
Changing the setting of the interface selector switch and the cable length selector
switch in RUN mode can result in loss of data.
Change the settings of these switches only in STOP mode of the CPU.

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A5E00267842-02 7-5
IM 463-2

7.4 Installing and Connecting the IM 463-2

Introduction
To install an IM 463-2 in a CR of the S7-400, proceed in the same way as when
installing other S7-400 modules (see Installation Manual, Chapter 5).
To connect an IM 463-2, follow the steps outlined below:
1. Prepare the connecting cable
2. Plug in the connecting cable
3. Select the interface
4. Select the cable length

Preparing the Connecting Cable

You can use the 721 connecting cable. However, you must change the connector
housing on the connection side of the IM 463-2.
Two connector housings are enclosed with every IM 463-2. You can prepare a
connecting cable for an IM 463-2 using one of these connector housings and a 721
connecting cable (see Catalog ST 54.1). To prepare the connecting cable, follow
the steps outlined below:
1. Remove one connector housing on the 721 connecting cable.
2. Open one of the connector housings enclosed with the IM 463-2.
3. Attach this connector housing to the 721 connecting cable.
4. Close the connector housing.

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7-6 A5E00267842-02
 IM 463-2

Plugging in the Connecting Cable

To plug in the connecting cable, follow the steps outlined below:
1. Open the cover of the IM 463-2.
2. Plug the new connector of the connecting cable into one of the connectors of
the IM 463-2.
Interface C1 corresponds to the upper connector; interface C2 corresponds to
the lower connector.
3. Screw the connector of the connecting cable onto the connector of the
IM 463-2.
4. Close the cover.

Selecting the Interface

You select the interface with the selector switch on the front plate. Set the
interface(s) here that you want to use. Make the settings on the IM 463-2 only
when the CPU is in STOP mode.

Selecting the Cable Length

You select the cable length with the selector switch on the frontplate. Set the range
corresponding to the chain length. Make the settings on the IM 463-2 only when
the CPU is in STOP mode.

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A5E00267842-02 7-7
IM 463-2

7.5 Setting the Operating Modes of the IM 314

Introduction
To operate the IM 463-2, you must set on the IM 314 the S5 expansion unit used
and the address area of the S5 I/O modules.

Setting the S5 Expansion Unit

You set the S5 expansion unit in which you want to use the IM 314 using jumpers
BR1, BR2, and BR3 on the IM 314.
The following figure shows where these jumpers are located on the IM 314 and
which setting corresponds to which expansion unit.

Used in EU 185U, EU 186U Used in EU 183U

2 1 3 2 1 off 2 1 3 2 1 off
S1 S1
on on
BR 1 • • •• • BR 2 BR 1 •• ••• BR 2

X3 X1 X3 X1
3 2 1 3 2 1
BR 3 ••• BR 3 •• •

X4 X2 X4 X2

Used in ER 701-2, ER 701-3

2 1 3 2 1 off
S1
BR 1 •• •• • BR 2 on

X3 X1
3 2 1
BR 3 • ••

X4 X2

Figure 7-2 Settings of the IM 314 with Expansion Units

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7-8 A5E00267842-02
 IM 463-2

Setting the Address Area

The address area of the S5 I/O modules is set on the IM 314. This setting applies
only for the digital and analog I/O modules.
The address areas P, Q, IM3, and IM4 are available. Set the switch to the relevant
position to address the digital and analog I/O modules in these areas.

Table 7-5 Settings Address Areas on the IM 314

I/O Area Address Switch Position

O = OFF, 1 = ON
not relevant
P area: F000 - F0FF S1: 0000 *)
OFF
Q area: F100 - F1FF 0001
ON
IM3 area: FC00 - FCFF 1100

IM4 area: FD00 - FDFF 1101

*) Status as shipped

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A5E00267842-02 7-9
IM 463-2

7.6 Configuring S5 Modules for Operation in the S7-400

You configure the S5 modules using STEP 7. See the description of STEP 7 or the
online help function for details of how to proceed.
The following figure shows a possible connection of CRs and EUs via the IM 463-2
and IM 314.

further EU 184U,
EU 187U (central)

S5 S5 S5
expansion IM 312-3 expansion IM 312-3 expansion IM 312-5
unit unit unit

IM 314 IM 314 IM 314

S5 S5 S5
expansion IM 300-3 IM 300-3 IM 300-5
expansion expansion
unit unit unit

Terminating connector 760-1AA11

All 721 connecting cables

S5 S5
IM 312-3 IM 312-5
expansion expansion
unit unit

Central mounting rack

IM 314 IM 314

S7-400 S5 S5
IM 463-2 IM 300-3
expansion expansion IM 300-5
unit unit

Terminating connector 760-1AA11

All 721 connecting cables
} To further S5 expansion units (distributed)
(max. 4 per IM 463-2)
max. 600 m

Figure 7-3 Connection Variant for CCs and EUs via the IM 463-2 and IM 314

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7-10 A5E00267842-02
 IM 463-2

7.7 Pin Assignments of the 721 Connecting Cable

Table 7-6 Assignment of the Connecting Cable 721

34 50 17 1
1 17 50 34

Connector Bundle Core Color Connector

Identification Foil
50-Pin Contact Ident. Sheath 50-Pin Contact
20 white 20
21 brown 21
4 green 4
5 1 yellow 5
red
18 No. 16 gray 18
19 pink 19
2 blue 2
3 red 3
24 white 24
25 brown 25
8 green 8
9 2 yellow 9
green
22 No. 17 gray 22
23 pink 23
6 blue 6
7 red 7
26 white 26
27 brown 27
10 green 10
11 3 yellow 11
yellow
42 No. 18 gray 42
43 pink 43
44 blue 44
45 red 45
28 white 28
29 brown 29
12 green 12
13 4 yellow 13
brown
46 No. 19 gray 46
47 pink 47
30 blue 30
31 red 31

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A5E00267842-02 7-11
IM 463-2

Table 7-6 Assignment of the Connecting Cable 721, continued

Connector Bundle Core Color Connector

Identification Foil
50-Pin Contact Ident. Sheath 50-Pin Contact
34 white 34
35 brown 35
36 green 36
37 5 yellow 37
black
38 No. 20 gray 38
39 pink 39
40 blue 40
41 red 41
48 white 48
49 brown 49
14 6 green 14
blue
15 No. 21 yellow 15
32 gray 32
33 pink 33
- Shield -

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7-12 A5E00267842-02
 IM 463-2

7.8 Terminating Connector for IM 314

Introduction
The IM 314 of the last expansion unit of each chain is terminated with the
6ES5760-1AA11 terminating connector.

Table 7-7 Assignment of the Terminator 760-1AA11

1 1
7
34 50

Plug Connection 180-Ohm Resistance or Jumper Plug Connection

28 8
29 9
26 6
27 7
48 4
47 5
44 2
45 3
42 24
43 25
38 22
39 1) 23
34 20
1)
35 21
36 18
1)
37 19
40 12
1)
41 13
48 10
2)
49 11
15 30
16 31
14
50
1)) 100 Ω
2) 200 Ω

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A5E00267842-02 7-13
IM 463-2

7.9 Technical Specifications (6ES7463-2AA00-0AA0)

Programming package Voltages, Currents, Potentials

Associated programming As of STEP 7 V 2.1 Supply voltage from +5 V
package S7-400 bus
Dimensions and Weight Current consumption typ. 1.2 A
max. 1.32 A
Dimensions
WxHxD (mm) 25x290x280 Power losses typ. 6 W
max. 6.6 W
Weight 360 g
Backup current no
Module-Specific Data
Number and type of 2 parallel, symmetrical
interfaces interfaces
Cable length:
from IM 463-2 to the last
IM 314
(per interface) max. 600 m
Transmission rate 2 Mbytes/s to
100 Kbytes/s
Parameter sets of the differential signal in
signal modules accordance with
RS 485
Front connector 2 connectors,
50-pin male

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7-14 A5E00267842-02
PROFIBUS DP Master Interface
IM 467/IM 467 FO 8
Chapter Overview

Section Description Page

8.1 PROFIBUS DP Master Interface IM 467/IM 467 FO 8-2
8.2 Configuration 8-6
8.3 Connection to PROFIBUS DP 8-7
8.4 Technical Specifications 8-11

Automation System S7-400 Module Specifications

A5E00267842-02 8-1
PROFIBUS DP Master Interface IM 467/IM 467 FO

8.1 PROFIBUS DP Master Interface IM 467/IM 467 FO

Order Numbers
IM 467 6ES7467-5GJ02-0AB0 (RS 485)
IM 467 FO 6ES7467-5FJ00-0AB0 (F0)

Application
PROFIBUS DP, standardized to IEC 61784--1:2002 Ed1 CP 3/1, enables rapid
communication in the field between programmable controllers, PCs and field
devices. Field devices are devices such as: ET 200 distributed I/O devices, drives,
valve terminals, switchgear and many others.
The IM 467/IM 467 FO interface module is meant to be used in an S7-400
programmable controller. It permits the S7-400 to be connected to PROFIBUS DP.

Note
The PROFIBUS DP master interface IM 467 or IM 467 FO is not a DP master in
accordance with DPV 1.

Configuration
• Configured as for the S7-400
• Can be operated without a fan
• A maximum of 4 IM 467/IM 467 FO can be used in the central controller. There
are no slot rules.
• The IM 467/IM 467 FO and the CP 443-5 Extended cannot be used together.
• The transmission rate of 9.6 kbps to 12 Mbps can be set in steps using software
• Configuration and programming are possible via PROFIBUS DP.
You must not, however, change the PROFIBUS DP parameters.
• IM 467 with 9-pin subminiature D female connector for connection to
PROFIBUS DP (6ES7467-5GJ02-0AB0)
• IM 467 FO with fiber-optic cable for connection to
PROFIBUS DP (6ES7467-5FJ00-0AB0)

Automation System S7-400 Module Specifications

8-2 A5E00267842-02
 PROFIBUS DP Master Interface IM 467/IM 467 FO

LEDs

Mode selector

PROFIBUS DP interface
9-pin subminiature D

Figure 8-1 Configuration of the IM 467/467 FO

Communication Services
The IM 467/IM 467 FO offers two communication services:
• PROFIBUS DP
The IM 467/IM 467 FO is a PROFIBUS DP master in accordance with EN 50
170. It is configured entirely with STEP 7. It behaves in basically the same way
as the integrated PROFIBUS DP interfaces on the CPU modules (see the
technical specifications of the IM 467/IM 467 FO for the differences).
DP communication does not require any function calls in the STEP 7 user
program.
• S7 functions
The S7 functions guarantee optimal and easy communication in a
SIMATIC S7/M7/C7 automation solution. The following S7 functions are enabled
for the IM 467/IM 467 FO:
-- Programming device functions via PROFIBUS DP
-- Operator control and monitoring functions via PROFIBUS DP
Communication takes place without any additional configuration on the IM 467/
IM 467 FO.
S7 functions can be used on their own or in parallel with the PROFIBUS DP
protocol. If they are used in parallel with DP communication, this affects the
PROFIBUS DP bus cycle time.

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A5E00267842-02 8-3
PROFIBUS DP Master Interface IM 467/IM 467 FO

8.1.1 Indicators and the Mode Selector

LED
The LED plate on the front panel of the IM 467/
IM 467 FO has the following four indicators:

INTF
EXTF

RUN
STOP

Figure 8-2 LEDs of the IM 467/467 FO

IM Operating Mode
The LEDs indicate the operating mode of the IM in accordance with the following
table:

Table 8-1 Operating Modes of the IM 467/467 FO

STOP LED RUN LED EXTF LED INTF LED CP Operating Mode
(yellow) (green) (red) (red)
On Flashing Off Off Startup
Off On Off Off RUN
Flashing On Off Off STOPPING
On Off Off Off STOP
STOP with internal error (IM not
On Off Off On
configured, for example)
Waiting for FW update (takes 10
Flashing Off Off Off
sec. after power up)
Waiting for FW update (IM
Flashing Off On On currently contains an incomplete
FW version).
RUN and PROFIBUS DP bus
Off On On Off
fault
RUN; but there are faults on the
DP line (the DP slave is not
Off On Flashing Off taking part in data transfer, or
the module in the DP slave is
faulty, for example)
Module error/
Flashing Flashing Flashing Flashing
System error

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8-4 A5E00267842-02
 PROFIBUS DP Master Interface IM 467/IM 467 FO

Controlling the Operating Mode

There are two ways to control the operating mode of the IM 467/IM 467 FO:
• By using the mode selector
• By using the programming device/PC

Mode Selector
You can switch operating modes as follows using the mode selector:
• From STOP to RUN
All the configured communication services and S7 communication services are
available in RUN.
The IM operating mode can only be controlled from the programming device/PC
when the switch is in the RUN position.
• From RUN to STOP
The IM goes into STOP mode. Any existing S7 connections are cleared down,
and the DP slaves are no longer supplied.

Loadable Firmware
The IM 467/IM 467 FO supports the updating of firmware (FW) by means of the
FW loader. The FW loader is a component of the NCM S7 configuration software
for PROFIBUS DP. Authorization is not required for this. After a FW update, the
central controller must be switched off and on again before normal operation can
be resumed.

Note
You can find additional information on loading firmware in the NCM S7 for
PROFIBUS DP manual and in the readme file of the NCM S7 for PROFIBUS DP
configuration software.

Note
An optical bus terminal (OBT) is required to load FW in the IM 467 FO.

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A5E00267842-02 8-5
PROFIBUS DP Master Interface IM 467/IM 467 FO

8.2 Configuration

The IM 467/IM 467 FO is configured with STEP 7. The configuration data are
retained even in the event of a power failure; a memory module is not required.
Using the S7 functions it is possible to program and configure remotely all the
IM 467/IM 467 FO connected to the network and all the CPUs connected via the
SIMATIC S7-400 backplane bus.
SIMATIC STEP 7 as version 5.00.

Module Replacement Without a Programming Device

The configuration data are stored in the load memory of the CPU. The non-volatile
storage of configuration data in the CPU is ensured by battery backup or EPROM
module cards.
The IM 467/IM 467 FO can be replaced without the need to explicitly reload the
configuration data.
It is only possible to remove and insert the IM 467/IM 467 FO in a deenergized
state.

Multiprocessor Operation
The connected DP slaves can only be assigned to and processed by one CPU.

Configuration and Diagnostics Cannot Be Carried Out Simultaneously

When configuration is in progress, the IM 467/IM 467 FO cannot be diagnosed at
the same time via MPI.

Note
The 3 MB and 6 MB transmission rates are not enabled for the IM 467-FO.

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8-6 A5E00267842-02
 PROFIBUS DP Master Interface IM 467/IM 467 FO

8.3 Connection to PROFIBUS DP

There are two ways of connecting to PROFIBUS DP:

• Electrical connection via a bus connector
• Optical connection using a fiber-optic cable

8.3.1 Bus Connector

Only with 6ES7467-5GJ02-0AB0.
The bus cable is connected to the IM 467 by means of this connector. (See the
detailed description in the chapter on networking in the S7-400, Hardware and
Installation manual.)

Switch for the bus

terminating resistor
Bus connector
PROFIBUS DP bus cable

Figure 8-3 Connecting the Bus Connector to the IM 467

Maximum Cable Lengths for PROFIBUS DP

Transmission Rate in 9.6 19.2 93.75 187.5 500 1500 3000 6000 W 12000
Kbps
Max. Length of a Bus 1.000 1.000 1.000 1.000 400 200 100 100 100
Segment in m
Max. Number of Bus 10 10 10 10 10 10 10 10 10
Segments 1)
Max. Length in m 10.000 10.000 10.000 10.000 4.000 2.000 1.000 1.000 1.000
1) Bus segments are interconnected by means of RS 485 repeaters

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A5E00267842-02 8-7
PROFIBUS DP Master Interface IM 467/IM 467 FO

Connector Pin Assignment

The electrical interface used to connect to
PROFIBUS DP (9-pin subminiature D female connector) is specified in the
following table.

INTF
EXTF
Ass. with
Pin Signal Name PROFIBUS DP RS 485
RUN
No. Designation
STOP

RUN
STOP 1 PE Protective earth yes
2 -- -- --
3 RxD/TxD--P Data transfer line -- B yes
4 RTS (AG) Control --A --
5 M5V2 Data reference potential yes
6 P5V2 Supply plus yes
7 BATT -- --
8 RxD/TxD--N Data transfer line -- A yes
9 -- -- --

Figure 8-4 Connector Pin Assignment

8.3.2 Optical Connection to PROFIBUS DP

Only in the case of 6ES7467-5FJ00-0AB0.

The IM 467 F0 with an integrated fiber-optic cable interface is available for
connecting to the optical version of PROFIBUS DP.

CP43-5- X2
443-5-FX 3E
00-0-X04
IE
N
T
F
X
TF

RU
N
ST
O
P
RU
N
ST
O
P

A
U
I/T
P

PROFIBUS FO bus cable

Figure 8-5 Optical Connection to PROFIBUS DP

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 PROFIBUS DP Master Interface IM 467/IM 467 FO

8.3.3 Connecting a Fiber-Optic Cable to the IM 467 FO

Accessories Required
• Pack of Simplex connectors and polishing sets (6GK1901-0FB00-0AA0)
• Pack of plug-in adapters (6ES7195-1BE00-0XA0)

Installing Connectors
1. Remove approximately 30 cm of the sheath of the fiber-optic duplex cable.
2. Install the fiber-optic duplex cable with the associated Simplex connectors. You
can find a detailed description of Simplex connectors in the ”SIMATIC NET
PROFIBUS Networks” manual.
TIP: Close the two Simplex connectors together rather than separately to obtain
a Duplex connector. This ensures a more secure position in the plug-in adapter.
IMPORTANT: The polished surface of the plastic fibers must be absolutely
smooth and even. The plastic sheath must not stick out or be cut unevenly. If
this is not the case, considerable attenuation of the light signal via the fiber-optic
cable may occur.
3. Place the Simplex connectors in the plug-in adapter for the IM 467 FO and the
fiber-optic cable in the cable guides provided. Insert the plug-in adapter until
you hear the sides clearly latch into position.
Make sure when you insert the plugs in the plug-in adapter that the sender is
always at the top and the receiver is underneath.

Plug-in adapter for

the IM 467 FO

Put the 2 Simplex connectors

together to make
one duplex connector.
Tip: Cut the lower cable approx. 10 mm shorter
than the upper one to achieve better cable routing
in the cable channel of the IM 467 FO.
Fiber-optic
duplex cable
Max. 30 mm bending radius
Figure 8-6 Installing the Connector

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A5E00267842-02 8-9
PROFIBUS DP Master Interface IM 467/IM 467 FO

Reusing Fiber-Optic Cables

Note
If you insert used fiber-optic cables in the plug-in adapter again, you must cut off
the bent lengths of both fiber-optic cable cores and install the Simplex connectors
again.
This avoids any attenuation losses due to parts of the cores of the fiber-optic
duplex cables being bent again and overstressed.

Inserting the Fiber-Optic Cables into the IM 467 FO

Insert the fiber-optic cables and attached plug-in adapters into the IM 467 FO.
Move the protruding handle of the plug-in adapter upwards.
Make sure that it is correctly positioned: The sender fiber-optic cable is plugged
into the receiver socket, and the receiver fiber-optic cable is inserted into the
sender socket of the fiber-optic interface of the IM 467 FO.
If the IM 467 FO is the last node in the fiber-optic network, you must close the
unoccupied fiber-optic cable interface with filler connectors (the connectors are
already in place when the IM 467 FO is delivered).

Caution
! Do not look directly into the opening of the optical sender diodes.
The light beam could damage your eyes.

PROFIBUS DP
Sender
Handle

R Receiver

T Sender

R Receiver
Receiver

T Sender

Figure 8-7 Inserting the Fiber-Optic Cables into the IM 467 FO

Bending Radius for the Fiber-Optic Cable

Make sure when you wire the fiber-optic duplex cable cores and insert them into
the plug-in adapter that the permissible bending radius of 30 mm is not violated.
See also the installation guidelines on fiber-optic cables in the SIMATIC NET
PROFIBUS Networks manual.

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8-10 A5E00267842-02
 PROFIBUS DP Master Interface IM 467/IM 467 FO

8.4 Technical Specifications

8.4.1 Technical Specifications of the IM 467

6ES7467-5GJ02-0AB0.

Dimensions and Weight PROFIBUS DP

Dimensions 25 x 290 x 210 Conditions of Use
W x H x D (mm) Can be used in SIMATIC S7-400, max. 4
Weight 700 g IM 467 in the central
PROFIBUS DP controller

• Standard PROFIBUS DP, IM 467 cannot be used together with the CP 443-5
EN 50 170 Supply voltage 5 VDC via the backplane
• Transmission rate 9.6 kbps to 12 Mbps, bus
parameterizable in steps Current consumption 1.3 A
• Transmission RS 485 via 9-pin • From 5 VDC
technology subminiature D female
connector Addressing range Max. 4 KB for inputs and 4
KB for outputs
Current consumption
DP master Yes
Current consumption from Total current consumption
the S7-400 bus (24 VDC) of the components
• DPV 1 No
The IM does not consume connected to the DP • Enable/disable No
any current at 24 V, and it interfaces, with a maximum Number of connectable I/O 96
only makes this voltage of 150 mA devices
available at the MPI/DP
(slaves)
interface.
Number of connections for 32 + 1 diagnostic
S7 functions for the connection
programming device and
operation and monitoring
Data volume per slave Max. 244 bytes
Consistency Max. 128 bytes
Configuration software STEP 7
DP slave No
Deviations from the DP Interface Integrated
in the CPU
• Different SSL IDs for system diagnostics
• Possibly extended SFC run times
• Additional return codes for SFC 14 and
SFC 15

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A5E00267842-02 8-11
PROFIBUS DP Master Interface IM 467/IM 467 FO

8.4.2 Technical Specifications of the IM 467 FO

6ES7 467-5FJ00-0AB0

Dimensions and Weight PROFIBUS DP

Dimensions 25 x 290 x 210 Conditions of Use
W x H x D (mm) Can be used in SIMATIC S7-400, max. 4
Weight 700 g IM 467 in the central
PROFIBUS DP controller

• Standard PROFIBUS DP, IM 467 cannot be used

EN 50 170 with the CP 443-5
• Transmission rate 9.6 kbps to 12 Mbps, Supply voltage 5 VDC via the backplane
configurable in steps (3 bus
Mbps and 6 Mbps not Current consumption 1.3 A
possible)
• From 5 VDC
• Transmission FOC
technology Addressing range Max. 4 KB for inputs and 4
Wavelength l = 660 nm 2 x KB for outputs
Duplex socket
DP master Yes
Current consumption
• DPV 1 No
Current consumption from Total current consumption
the S7-400 bus (24 VDC) of the components • Enable/disable No
The IM does not consume connected to the DP Number of connectable I/O 96
any current at 24 V, and it interfaces, with a maximum devices
only makes this voltage of (slaves)
available at the MPI/DP 150 mA
Number of connections for 32 + 1 diagnostic
interface.
S7 functions for the connection
programming device and
operator control and
monitoring
Data volume per slave Max. 244 bytes
Consistency Max. 128 bytes
Configuration software STEP 7
DP slave No
Deviations from the DP Interface Integrated
in the CPU
• Different SSL IDs for system diagnostics
• Possibly extended SFC run times
• Additional return codes for SFC 14 and
SFC 15

Automation System S7-400 Module Specifications

8-12 A5E00267842-02
Cable Duct and Fan Subassemblies 9
Chapter Overview

Section Description Page

9.1 Fan Monitoring in the Fan Subassemblies 9-2
9.2 Cable Duct; (6ES7408-0TA00-0AA0) 9-4
9.3 The 120/230 VAC Fan Subassembly; (6ES7408-1TB00-0XA0) 9-5
9.4 The 24 VDC Fan Subassembly; (6ES7408-1TA00-0XA0) 9-7

Characteristics
The cable duct and the fan subassembly have the following characteristics
• The air inflow area is variable.
• Shield and cable clamping are possible.
In addition, the fan subassembly has the following characteristics:
• Fans and filter frames can be replaced from the front during operation.
• The fan function is controlled by means of speed monitoring.
• Operation with filter frames is optional.

Automation System S7-400 Module Specifications

A5E00267842-02 9-1
Cable Duct and Fan Subassemblies

9.1 Fan Monitoring in the Fan Subassemblies

In this section, you will find out how to monitor the fans.
There is a signaling concept example at the end of the section.

LEDs
The three red LEDs are assigned to the individual fans. From left to right, these
are:
F1 -- for fan 1
F2 -- for fan 2
F3 -- for fan 3

Fans
The fans have a redundant design. The fan subassembly continues to function
even if one fan fails.

Fan Monitoring
The function of the fans is controlled by means of speed monitoring. If the speed of
a fan drops below the limit speed of 1750 rpm, the LED assigned to it lights up. In
addition, the relay K1 drops out.
If the speed of a second fan drops below the limit speed, the LED assigned to it
lights up; in addition, the relay K2 drops out.
The following table is the function table for the fan monitoring.

Table 9-1 Function of Fan Monitoring

Fan1 Fan2 Fan3 LED F1 LED F2 LED F3 Relay K1 Relay K2

-- -- -- L L L -- --
-- -- + L L D -- --
-- + -- L D L -- --
+ -- -- D L L -- --
-- + + L D D -- +
+ -- + D L D -- +
+ + -- D D L -- +
+ + + D D D + +
--* --* --* D* D* D* --* --*

+ Fan in operation or relay picked up

-- Fan failed or relay dropped out
D LEDs dark
L LEDs lit
* Power off

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9-2 A5E00267842-02
 Cable Duct and Fan Subassemblies

Signaling Concept Example

You can check the fault-free functioning of the fan subassembly using digital inputs.
You can cause the power supply to be cut off after the failure of at least two fans by
using the relay K2. For example, you can use an intermediate contactor to interrupt
the mains.
The relay contacts are labeled as follows:
Relay K1: No. 1...3
Relay K2: No. 4...6
The following diagram explains the circuit in the fan subassembly when all fans are
functioning.

... to the digital input module

... in the fan assembly

Evaluation
(digital input module) 1
L+ 2 ... to the monitor
Evaluation 3 K1
(digital input module)

4
... to the monitor
5
K2
24 V 6

... to the power supply module

... to the mains

Status: All fans operating

Figure 9-1 Example of a Message Concept

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A5E00267842-02 9-3
Cable Duct and Fan Subassemblies

9.2 Cable Duct; (6ES7408-0TA00-0AA0)

Function
The cable duct is used in installations outside the cabinet for
• Cable clamping and/or for
• Shielding or for
• Air circulation without fan assistance

Front View of the Cable Duct

Eye for
clamping cable

Shielding
clamp
(Side elevation
Scale 1:1)

Figure 9-2 Front View of the Cable Channel

Shielding Clamps
If you do not require the shielding clamps supplied, do not install them in the cable
duct.

Technical Specifications

Dimensions W x H x D (mm) 482.5 x 109.5 x 235

Weight ca. 1200 g

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9-4 A5E00267842-02
 Cable Duct and Fan Subassemblies

9.3 The 120/230 VAC Fan Subassembly;

(6ES7408-1TB00-0XA0)

Operator Controls and Indicators on the 120/230 VAC Fan Subassembly

Relay contacts
1, 2, 3

Relay contacts
4, 5, 6

Quick-release lock LEDs F1, F2, F3

Voltage
selector switch

Fuse
compartment

Figure 9-3 Controls and Indicators of the Fan Subassembly 120/230 VAC (6ES7408-1TB00-0XA0)

Fuse
Included in this fan subassembly are standard cartridge fuse links,
5 x 20 mm, conforming to DIN
• 250 mAT for 120 V
• 160 mAT for 230 V.
The fuse for the 230 V range is already installed on shipping from the factory.

Note
If you change the voltage range, you must also insert the fuse for this voltage
range in the fan subassembly. You will find a description of how to change the fuse
in the Installation Manual, Chapter 9.

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A5E00267842-02 9-5
Cable Duct and Fan Subassemblies

Shielding Clamps
If you do not require the shielding clamps supplied, do not install them in the fan
subassembly.

Technical Specifications
Dimensions, Weights Voltages, Currents, Potentials
Dimensions WxHxD (mm)
( ) 482.5×109.5×235 At nominal voltage of 230 VAC 120 VAC
Weight appr. 2000 g Power consumption
Cable diameter 3 to 9 mm • with fan 17 W 18 W
Nominal Sizes • without fan 5W 4W

Lifespan of the fans Starting current 0.6 A 1.15 A

• at 40˚C typ. 70000 h Fuses 160 mA 250 mA
• at 75˚C typ. 25000 h
Max. contact load of relay
contacts 1 to 6
• Switching voltage 24 VDC
• Switching current 200 mA

Warning
! Electrical current can lead to personal injury.
If you remove the left cover when installing or removing the fan subassembly, the
terminals on the transformer are accessible briefly.
Remove the voltage from the fan subassembly before you install or remove it.
Disconnect the supply cable before you remove the fan subassembly.

Caution
! Danger of damage to equipment.
If you mix up the power supply PCB and the monitoring PCB in the fan
subassembly, the fan subassembly may be damaged.
During maintenance of the unit, make sure you do not mix up the power supply
PCB and the monitoring PCB.

Monitoring Function
In the case of a fault (defective fans) the fans are not switched off. Once you have
replaced the defective fan(s), the fault is acknowledged automatically as soon as
the fans have reached the required speed. Any faults that occur are not stored.
When you switch on the fan subassembly, the fans start running. After
approximately 10 s the current status of the fans is indicated via LEDs and relays.

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9-6 A5E00267842-02
 Cable Duct and Fan Subassemblies

9.4 The 24 VDC Fan Subassembly; (6ES7408-1TA00-0XA0)

Operator Controls and Indicators on the 24 VDC Fan Subassembly

Relay contacts
1, 2, 3
Relay contacts
1 AT

4, 5, 6

Quick-release lock LEDs F1, F2, F3

1 AT
Fuse
compartment

Figure 9-4 Controls and Indicators of the Fan Subassembly 24 VDC (6ES7408-1TA00-0XA0)

Characteristics
The 24 VDC fan subassembly has the same construction and functional
characteristics as the 120/230 VAC fan subassembly.

Installation
Installing the 24 VDC fan subassembly is the same as for the 120/230 VAC fan
subassembly.

Wiring
You connect the 24 VDC fan subassembly to the 24 VDC supply in the same
manner as for the 120/230 VAC fan subassembly. You should note the polarity of
the spring connections L+ and L--.

Signaling Concept
The signaling concept of the 24 VDC fan subassembly is identical to the signaling
concept of the 120/230 VAC fan subassembly.

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A5E00267842-02 9-7
Cable Duct and Fan Subassemblies

Fuse
Included in this fan subassembly are standard cartridge fuse links, 5 x 20 mm,
conforming to DIN
• 1.0 AT for 24 V
The fuse is already installed on shipping from the factory.

Shielding Clamps
If you do not require the shielding clamps supplied, do not install them in the fan
subassembly.

Technical Specifications
Dimensions, Weights Voltages, Currents, Potentials
Dimensions WxHxD (mm)
( ) 482.5 x 109.5 x 235 Input voltage
Weight appr. 1600 g • Nominal value DC 24 V
Cable diameter 3 to 9 mm • Valid range Static 19.2 V up to
30 V
Nominal Sizes
Dynamic: 18.5 up to
Lifespan of the fans 30.2 V
• at 40˚C typ. 70000 h Starting current 0.9 A at 24 V
• at 75˚C typ. 25000 h
Fuses 1.0 AT
Max. contact load of relay con-
Power consumption
tacts 1 to 6
• with fan 12 W
• Switching voltage 24 VDC
• without fan 1.4 W
• Switching current 200 mA

Caution
! Danger of damage to equipment.
If you insert the monitoring PCB in the wrong position in the fan subassembly, the
fan subassembly may be damaged.
During maintenance of the unit, make sure you do not replace the monitoring PCB
in the wrong position.

Monitoring Function
In the case of a fault (defective fans) the fans are not switched off. Once you have
replaced the defective fan(s), the fault is acknowledged automatically as soon as
the fans have reached the required speed. Any faults that occur are not stored.
When you switch on the fan subassembly, the fans start running. After
approximately 10 s the current status of the fans is indicated via LEDs and relays.

Automation System S7-400 Module Specifications

9-8 A5E00267842-02
RS 485 Repeater 10
In this Chapter
In this chapter, you will find a detailed description of the RS 485 repeater.
Included in the description are:
• The purpose of the RS 485 repeater
• The maximum cable lengths possible between two RS 485 repeaters
• The functions of the individual operating elements and terminals
• Information about grounded and non-grounded operation
• Technical specifications and the block diagram

Further Information
You will find further information on the RS 485 repeater in the
Installation manual, Chapter “Configuring an MPI or PROFIBUS DP network”.

Chapter Overview

Section Description Page

10.1 Application and Characteristics; 10-2
(6ES7972-0AA01-0XA0)
10.2 Appearance of the RS-485 Repeater; (6ES7972-0AA01-0XA0) 10-3
10.3 RS 485 Repeater in Ungrounded and Grounded Operation 10-4
10.4 Technical Specifications 10-6

Automation System S7-400 Module Specifications

A5E00267842-02 10-1
RS 485 Repeater

10.1 Application and Characteristics (6ES7972-0AA01-0XA0)

What is an RS 485 Repeater?

The RS 485 repeater amplifies data signals on bus lines and interconnects bus
segments.

Application of the RS 485 Repeater

You need an RS 485 repeater if:
• more than 32 nodes are connected to the bus
• ungrounded segments are to be operated on the bus, or
• the maximum cable length of a segment is exceeded. (See table 10-1).

Table 10-1 Maximum Cable Length of a Segment

Baud Rate Max. Cable Length of a Segment (in m)

9.6 to 187.5 kbaud 1000
500 kbaud 400
1.5 Mbaud 200
3 to 12 Mbaud 100

Rules
If you configure the bus with RS 485 repeaters:
• Up to 9 RS 485 repeaters can be connected in series.
• The maximum cable length between two nodes must not exceed the values in
Table 10-2.

Table 10-2 Maximum Cable Length between Two RS 485 Repeaters

Baud Rate Maximum Length of Cable between 2 Nodes (in m) with

RS 485 Repeater (6ES7972-0AA01-0XA0)
9.6 to 187.5 kbaud 10000
500 kbaud 4000
1.5 Mbaud 2000
3 to 12 Mbaud 1000

Automation System S7-400 Module Specifications

10-2 A5E00267842-02
 RS 485 Repeater

10.2 Appearance of the RS 485 Repeater;

(6ES7972-0AA01-0XA0)

The table below shows the appearance of the RS 485 repeater and lists its
functions.

Table 10-3 Description and Functions of the RS 485 Repeater

Repeater Design No. Function

 Connection for the RS 485 repeater power supply (pin “M5.2”
24 VDC
is the ground reference, if you want to measure the voltage
L+ M PE M 5.2 1
10
difference between terminals “A2” and “B2”).
2
 Shield clamp for the strain relief and grounding of the bus
cable of bus segment 1 or bus segment 2
3

A1 B1 A1 B1 ‘ Terminals for the bus cable of bus segment 1

ON
4

11
’ Terminating resistance for bus segment 1
DP1
9 PG 5
OFF
OP
DP2
12 “ Switch for OFF operating mode
6
(= isolate bus segments from each other -- for example, for
ON
SIEMENS
startup
RS 485-REPEATER
A2 B2 A2 B2

7 ” Terminating resistance for bus segment 2

2
• Terminals for the bus cable of bus segment 2

8
– Slide for mounting and removing the RS 485 repeater on the
standard rail

9 Interface for programming device/OP in bus segment 1

10 LED 24 V supply voltage

11 LED for bus segment 1

12 LED for bus segment 2

Automation System S7-400 Module Specifications

A5E00267842-02 10-3
RS 485 Repeater

10.3 RS 485 Repeater in Ungrounded and Grounded

Operation

Grounded or Ungrounded
The RS 485 repeater is ...
• grounded, if all other nodes in the segment are also operated with a grounded
potential
• ungrounded, if all other nodes in the segment are operated with an ungrounded
potential

Note
The bus segment 1 is grounded if you connect a programming device which has a
pure MPI interface to the PG/OP socket of the RS 485 repeater. Ground
connection is effected since the MPI in the programming device is grounded and
the PG/OP socket is connected internally with bus segment 1 in the RS 485
repeater. This does not apply if the PG is equipped with a combo MPI/DP
interface.

Grounded Operation of the RS 485 Repeater

For grounded operation of the RS 485 repeater, you must jump terminals “M” and
“PE” on the top of the RS 485 repeater.

Ungrounded Operation of the RS 485 Repeater

For ungrounded operation of the RS 485 repeater, “M” and “PE” on the top of the
RS 485 repeater must not be interconnected. In addition, the supply voltage of the
RS 485 repeater must be ungrounded.

Automation System S7-400 Module Specifications

10-4 A5E00267842-02
 RS 485 Repeater

Terminal Connection Diagram

In the case of a repeater configuration with ungrounded reference potential
(ungrounded operation), any interference currents and static charges are
discharged by means of an RC network integrated in the repeater (refer to
Figure 10-1) to the protective conductor.

PE
24 VDC
L+ M PE M 5.2

22 nF 10 MΩ

A1 B1 A1 B1

Ground bus

Figure 10-1 RC Network with 10 MΩ for Configuration with Ungrounded Reference Potential

Isolation Between Bus Segments

Bus segment 1 and bus segment 2 are galvanically isolated from each other. The
PG/OP interface is connected internally to the port for bus segment 1. Figure 10-2
shows the front panel of the RS 485 repeater.

24 VDC
L+ M PE M 5.2

Terminals for bus segment 1

A1 B1 A1 B1

ON

PG/OP PG
DP1

interface OP
OFF

DP2

ON
Isolation SIEMENS
RS 485-REPEATER
A2 B2 A2 B2 Terminals for bus segment 2

Figure 10-2 Isolation Between the Bus Segments

Automation System S7-400 Module Specifications

A5E00267842-02 10-5
RS 485 Repeater

Amplification of the Bus Signals

The amplification of the bus signals takes place between the port for bus segment
1 or the PG/OP interface and the port for bus segment 2.

10.4 Technical Specifications

Technical Specifications of the RS 485 Repeater

Technical Specification
Power supply
pp y
• Rated voltage
g 24 VDC
• Ripple 20.4 to 28.8 VDC
Current consumption
p at rated voltage
g
• without node at PG/OP socket 200 mA
• Node at PG/OP socket (5 V/90 mA) 230 mA
• Node at PG/OP socket (24 V/100 mA) 200 mA

Isolation Yes, 500 VAC

Connection of fiber optic cables Yes, via repeater adapters
Redundancy operation No
Transmission rate (automatically detected by the repeater) 9.6 kbaud, 19.2 kbaud, 45.45 kbaud,
93.75 kbaud, 187.5 kbaud, 500 kbaud.
1.5 Mbaud. 3 Mbaud,
6 Mbaud, 12 Mbaud
Degree of protection IP 20
Dimensions W × H × D (in millimeters) 45 × 128 × 67 mm
Weight (incl. packaging) 350 g

Pin Assignment of the Sub-D Connector (PG/OP Socket)

View Pin No. Signal Name Designation

1 -- --
2 M24V Ground 24 V
5 3 RxD/TxD-P Data line B
9 4 RTS Request To Send
4
8 5 M5V2 Data reference potential (from station)
3
7 6 P5V2 Supply plus (from station)
2
6 7 P24V 24 V
1
8 RxD/TxD-N Data line A
9 -- --

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10-6 A5E00267842-02
 RS 485 Repeater

Block Diagram of the RS 485 Repeater

• Bus segment 1 and bus segment 2 are galvanically isolated from each other.
• Bus segment 2 and the PG/OP socket are galvanically isolated from each
other.
• Signals are amplified
-- between bus segment 1 and bus segment 2
-- between PG/OP socket and bus segment 2

Segment 1 Segment 2
A1 A2
Logic
B1 B2
A1’ + A2’
B1’ B2’
OFF

OFF

ON ON

+ - + - -
PG/OP- 5V 1M 5V 1M
socket
24V 24V
L+ (24 V) L+ (24 V)
M M
A1
B1 PE
5V M 5.2
M5 V

Figure 10-3 Block Diagram of the RS 485 Repeater

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A5E00267842-02 10-7
RS 485 Repeater

Automation System S7-400 Module Specifications

10-8 A5E00267842-02
Parameter Sets for Signal Modules A
Chapter Overview

Section Description Page

A.1 How to Assign the Parameters for Signal Modules in the A-2
User Program
A.2 Parameters of the Digital Input Modules A-3
A.3 Parameters of the Digital Output Modules A-6
A.4 Parameters of the Analog Input Modules A-9

Automation System S7-400 Module Specifications

A5E00267842-02 A-1
Parameter Sets for Signal Modules

A.1 How to Assign the Parameters for Signal Modules in

the User Program

Parameter Assignment in the User Program

You have already assigned parameters to the modules in STEP 7.
In the user program, you can use a SFC:
• to reassign parameters to the module and
• and transfer the parameters from the CPU to the addressed signal module

Parameters Stored in Data Records

The signal module parameters are stored in data records 0 and 1.

Modifiable Parameters
You can change the parameters of record 1 and pass them to the signal module
using SFC 55. The parameters set on the CPU are not changed when you do this!
You cannot modify the parameters of data record 0 in the user program.

SFCs for Parameter Assignment

The following SFCs are available for assigning parameters to the signal modules in
the user program:

Table A-1 SFCs for assigning Parameters to Signal Modules

SFC No. Identifier Application

55 WR_PARM Transfer of modifiable parameters (data record 1) to the
addressed signal module.
56 WR_DPARM Transfer of parameters (data record 0 or 1) from the CPU
to the addressed signal module.
57 PARM_MOD Transfer of all parameters (data record 0 and 1) from the
CPU to the addressed signal module.

Description of the Parameters

The following sections contain all the modifiable parameters for the various module
classes. The parameters of the signal modules are described:
• in the online help of STEP 7.
• in this reference manual
You will find the parameters that can be adjusted for the signal module
concerned in the specific sections for the different signal modules.

Further References
You can find an in-depth description of the principle of assigning parameters to
signal modules in the user program and a description of the SFCs that can be used
for this purpose in the STEP 7 manuals.

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A-2 A5E00267842-02
 Parameter Sets for Signal Modules

A.2 Parameters of the Digital Input Modules

Parameters
The table below contains all the parameters you can set for digital input modules.
You will see which parameters you can modify from the list:
• in STEP 7
• with SFC 55 ”WR_PARM”
The parameters set with STEP 7 can also be transferred to the module with SFCs
56 and 57 (refer to the STEP 7 manuals).

Table A-2 Parameters of the Digital Input Modules

Parameter Data Record Parameters Can Be Assigned

No. with ...
... SFC 55 ... STEP 7
Destination CPU for interrupts No Yes
Input delay 0 No Yes
Diagnostics No Yes
Hardware interrupt enable Yes Yes
Diagnostic interrupt enable Yes Yes
Reaction to error* Yes Yes
1
Hardware interrupt with rising edge Yes Yes
Hardware interrupt with falling edge Yes Yes
Substitute “1”* Yes Yes

* Only in 6ES7421-7BH00-0AB0

Note
If you want to enable the diagnostic interrupt in the user program in data record 1,
you must enable the diagnosis in data record 0 beforehand using STEP 7.

Automation System S7-400 Module Specifications

A5E00267842-02 A-3
Parameter Sets for Signal Modules

Structure of Data Record 1

The figure below shows the structure of data record 1 (bytes 0, 1, 2 and 3) for the
parameters of the digital input modules.
You enable a parameter by setting the corresponding bit to “1”.

7 6 0
Byte 0

Reaction to error *)
Diagnostic interrupt enable
Hardware interrupt enable

7 6 5 4 3 2 1 0
Byte 1 Hardware interrupt

On rising edge at channel 0

On rising edge at channel 1
On rising edge at channel 2
On rising edge at channel 3
On rising edge at channel 4
On rising edge at channel 5
On rising edge at channel 6
On rising edge at channel 7

7 6 5 4 3 2 1 0
Byte 2 Hardware interrupt

On rising edge at channel 8

On rising edge at channel 9
On rising edge at channel 10
On rising edge at channel 11
On rising edge at channel 12
On rising edge at channel 13
On rising edge at channel 14
On rising edge at channel 15

7 6 5 4 3 2 1 0
Byte 3 Hardware interrupt

On falling edge at channel 0

On falling edge at channel 1
On falling edge at channel 2
On falling edge at channel 3
On falling edge at channel 4
On falling edge at channel 5
On falling edge at channel 6
On falling edge at channel 7
*) Only in 6ES7421-7BH00-0AB0

Figure A-1 Data Record 1 of the Parameters of the Digital Input Modules

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A-4 A5E00267842-02
 Parameter Sets for Signal Modules

The figure below shows the structure of data record 1 (bytes 4, 5 and 6) for the
parameters of the digital input modules.
You enable a parameter by setting the corresponding bit to “1”.

7 6 5 4 3 2 1 0
Byte 4 Hardware interrupt

On falling edge at channel 8

On falling edge at channel 9
On falling edge at channel 10
On falling edge at channel 11
On falling edge at channel 12
On falling edge at channel 13
On falling edge at channel 14
On falling edge at channel 15

7 6 5 4 3 2 1 0
Byte 5 Substitute value *)

Enable substitute value 1 on channel 0

Enable substitute value 1 on channel 1
Enable substitute value 1 on channel 2
Enable substitute value 1 on channel 3
Enable substitute value 1 on channel 4
Enable substitute value 1 on channel 5
Enable substitute value 1 on channel 6
Enable substitute value 1 on channel 7

7 6 5 4 3 2 1 0
Byte 6 Substitute value *)

Enable substitute value 1 on channel 8

Enable substitute value 1 on channel 9
Enable substitute value 1 on channel 10
Enable substitute value 1 on channel 11
Enable substitute value 1 on channel 12
Enable substitute value 1 on channel 13
Enable substitute value 1 on channel 14
Enable substitute value 1 on channel 15

*) Only in 6ES7421-7BH00-0AB0

Figure A-2 Data Record 1 for Parameters of the Digital Input Modules

Automation System S7-400 Module Specifications

A5E00267842-02 A-5
Parameter Sets for Signal Modules

A.3 Parameters of the Digital Output Modules

Parameters
The table below contains all the parameters you can set for digital output modules.
The comparison shows:
• Which parameters you can change with STEP 7 and
• Which parameters you can change with SFC 55 “WR_PARM”
The parameters set with STEP 7 can also be transferred to the module with
SFCs 56 and 57 (refer to the STEP 7 manuals).

Table A-3 Parameters of the Digital Output Modules

Parameter Data Record Parameters Can Be Assigned

No. with ...
... SFC 55 ... STEP 7
Destination CPU for Interrupts No Yes
0
Diagnostics No Yes
Diagnostic interrupt enable Yes Yes
Reaction to CPU STOP 1 Yes Yes
Enable substitute value “1” Yes Yes

Note
If you want to enable the diagnostic interrupt in the user program in data record 1,
you must enable the diagnosis in data record 0 beforehand using STEP 7.

Automation System S7-400 Module Specifications

A-6 A5E00267842-02
 Parameter Sets for Signal Modules

Structure of Data Record 1

The figure below shows the structure of data record 1 (bytes 0, 1 and 2) for the
parameters of the digital output modules.
You enable a parameter by setting the corresponding bit to “1”.

7 6 0
Byte 0

Reaction to CPU STOP

Diagnostic interrupt enable

7 6 5 4 3 2 1 0
Byte 1 Substitute value

Enable substitute value 1 on channel 0

Enable substitute value 1 on channel 1
Enable substitute value 1 on channel 2
Enable substitute value 1 on channel 3
Enable substitute value 1 on channel 4
Enable substitute value 1 on channel 5
Enable substitute value 1 on channel 6
Enable substitute value 1 on channel 7

7 6 5 4 3 2 1 0
Byte 2 Substitute value

Enable substitute value 1 on channel 8

Enable substitute value 1 on channel 9
Enable substitute value 1 on channel 10
Enable substitute value 1 on channel 11
Enable substitute value 1 on channel 12
Enable substitute value 1 on channel 13
Enable substitute value 1 on channel 14
Enable substitute value 1 on channel 15

Figure A-3 Data Record 1 for Parameters of the Digital Output Modules

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A5E00267842-02 A-7
Parameter Sets for Signal Modules

The figure below shows the structure of data record 1 (bytes 3 and 4) for the
parameters of the digital output modules.
You enable a parameter by setting the corresponding bit to “1”.

7 6 5 4 3 2 1 0
Byte 3* Substitute value

Enable substitute value 1 on channel 16

Enable substitute value 1 on channel 17
Enable substitute value 1 on channel 18
Enable substitute value 1 on channel 19
Enable substitute value 1 on channel 20
Enable substitute value 1 on channel 21
Enable substitute value 1 on channel 22
Enable substitute value 1 on channel 23

7 6 5 4 3 2 1 0
Byte 4* Substitute value

Enable substitute value 1 on channel 24

Enable substitute value 1 on channel 25
Enable substitute value 1 on channel 26
Enable substitute value 1 on channel 27
Enable substitute value 1 on channel 28
Enable substitute value 1 on channel 29
Enable substitute value 1 on channel 30
Enable substitute value 1 on channel 31

* Bytes 3 and 4 are not relevant for SM 421; DO 16 x 20-125 VDC/1.5 A

Figure A-4 Data Record 1 for Parameters of the Digital Output Modules

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A-8 A5E00267842-02
 Parameter Sets for Signal Modules

A.4 Parameters of the Analog Input Modules

Parameters
The table below contains all the parameters you can set for analog input modules.
You will see which parameters you can modify from the list:
• in STEP 7
• with SFC 55 ”WR_PARM”
The parameters set with STEP 7 can also be transferred to the module with
SFCs 56 and 57 (refer to the STEP 7 manuals).

Table A-4 Parameters of the Analog Input Modules

Parameter Data Record Parameters Can Be Assigned

No. with ...
... SFC 55 ... STEP 7
Destination CPU for Interrupts No Yes
Measuring Type No Yes
Measuring Range No Yes
Diagnostics No Yes
Temperature Unit No Yes
0
Temperature Coefficient No Yes
Interference Suppression No Yes
Smoothing No Yes
Reference Junction No Yes
End-of-scan-cycle interrupt No Yes
Diagnostic interrupt enable Yes Yes
1
Hardware interrupt enable Yes Yes
Reference Temperature 1 Yes Yes
High Limit 1 Yes Yes
Low Limit 1 Yes Yes

Note
If you want to enable the diagnostic interrupt in the user program in data record 1,
you must enable the diagnosis in data record 0 beforehand using STEP 7.

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A5E00267842-02 A-9
Parameter Sets for Signal Modules

Structure of Data Record 1

The figure below shows the structure of data record 1 for the parameters of the
analog input modules.
You enable a parameter by setting the corresponding bit to “1”.

7 6 0
Byte 0

Diagnostic interrupt enable

Hardware interrupt enable
Byte 1 High-Order Byte Reference temperature
Byte 2 Low-Order Byte in 0.01 ¥C
Byte 3 High-Order Byte Upper-limit value
Byte 4 Low-Order Byte for channel 0
Byte 5 High-Order Byte Lower-limit value for
Byte 6 Low-Order Byte channel 0
•
•
•
Byte 31 High-Order Byte Upper-limit value for
Byte 32 Low-Order Byte channel 7
Byte 33 High-Order Byte Lower-limit value
Byte 34 Low-Order Byte for channel 7

•
•
•
Byte 63 High-Order Byte Upper-limit value
Byte 64 Low-Order Byte for channel 15
Byte 65 High-Order Byte Lower-limit value for
Byte 66 Low-Order Byte channel 15

Figure A-5 Data Record 1 for Parameters of the Analog Input Modules

Note
The representation of the limit values and the reference temperature corresponds
to the analog value representation (see Chapter 6). Please observe the range
limits when setting the limit values.

Automation System S7-400 Module Specifications

A-10 A5E00267842-02
Diagnostic Data of the Signal Modules B
Chapter Overview

Section Description Page

B.1 Evaluating the Diagnostic Data of the Signal Modules in the User B-2
Program
B.2 Structure and Contents of Diagnostic Data Bytes 0 and 1 B-3
B.3 Diagnostic Data of the Digital Input Modules as of Byte 2 B-4
B.4 Diagnostic Data of the Digital Output Modules as of Byte 2 B-8
B.5 Diagnostic Data of the Analog Input Modules as of Byte 2 B-14

Automation System S7-400 Module Specifications

A5E00267842-02 B-1
Diagnostic Data of the Signal Modules

B.1 Evaluating the Diagnostic Data of the Signal Modules

in the User Program

In This Appendix
This Appendix describes the structure of the diagnostic data in the system data.
You must be familiar with this structure if you want to evaluate the diagnostic data
of the signal module in the STEP 7 user program.

Diagnostic Data are Contained in Data Records

The diagnostic data of a module can be up to 43 bytes long and are contained in
data records 0 and 1:
• Data record 0 contains 4 bytes of diagnostic data that describe the current
status of a programmable controller.
• Data record 1 contains the four bytes of diagnostic data that are also contained
in data record 0 and as many as 39 bytes of module-specific diagnostic data.

Further Reading
An in-depth description of the principle of evaluating the diagnostic data of signal
modules in the user program and a description of the SFCs that can be used for
that purpose will be found in the STEP 7 manuals.

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B-2 A5E00267842-02
 Diagnostic Data of the Signal Modules

B.2 Structure and Contents of

Diagnostic Data Bytes 0 and 1

The structure and contents of the different bytes of the diagnostic data are
described below. The following general rule applies: When an error occurs, the bit
concerned is set to ”1”.

Bytes 0 and 1

7 6 5 4 3 2 1 0
Byte 0

Module malfunction
Internal malfunction
External malfunction
There is a channel error
No external auxiliary supply
Front connector missing
Module not parameterized.
Incorrect parameter in the module

7 6 5 4 3 2 1 0
Byte 1 0 0 0

Module type (see Table B-1)

Channel information available

Figure B-1 Bytes 0 and 1 of the Diagnostic Data

Module Types
The following table contains the IDs of the module classes (bits 0 to 3 in byte 1).

Table B-1 Codes of the Module Types

Code Module Type

0101 Analog module
0110 CPU
1000 Function module
1100 CP
1111 Digital module

Automation System S7-400 Module Specifications

A5E00267842-02 B-3
Diagnostic Data of the Signal Modules

B.3 Diagnostic Data of the Digital Input Modules

as of Byte 2

The structure and contents of the different bytes of the diagnostic data for special
digital input modules are described below. The following general rule applies:
When an error occurs, the bit concerned is set to “1”.
You will find a description of possible error causes and appropriate remedies in the
section called “Diagnostics of the Modules”.

Bytes 2 and 3 of the SM 421; DI 16 × 24 VDC

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0

Operating status 0: RUN

1: STOP
Module-internal supply voltage failure

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0 0

EPROM error
Hardware interrupt lost

Figure B-2 Bytes 2 and 3 of the Diagnostic Data of the SM 421; DI 16 x 24 VDC

Automation System S7-400 Module Specifications

B-4 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 4 to 8 of the SM 421; DI 16 x 24 VDC

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#70: digital input

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 16 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

Figure B-3 Bytes 4 to 8 of the Diagnostic Data of the SM 421; DI 16 x 24 VDC

Bytes 9 to 24 of the SM 421; DI 16 × 24 VDC

Data record 1 with bytes 9 to 24 contains the channel-specific diagnostic data. The
figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0 0 0 0

Configuring/parameter assignment error

Wire break
Sensor supply missing

Figure B-4 Diagnostic Byte for a Channel of the SM 421; DI 16 x 24 VDC

Automation System S7-400 Module Specifications

A5E00267842-02 B-5
Diagnostic Data of the Signal Modules

Bytes 2 and 3 of the SM 421; DI 16 x 24/60 VUC

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0 0

Operating status 0: RUN

1: STOP

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0 0

EPROM error
Hardware interrupt lost

Figure B-5 Bytes 2 and 3 of the Diagnostic Data of the SM 421; DI 16 x 24/60 VUC

Bytes 4 to 8 of the SM 421; DI 16 x 24/60 VUC

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#70: digital input

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 16 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

Figure B-6 Bytes 4 to 8 of the Diagnostic Data of the SM 421; DI 16 x 24/60 VUC

Automation System S7-400 Module Specifications

B-6 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 9 to 24 of the SM 421; DI 16 x 24/60 VUC

Data record 1 with bytes 9 to 24 contains the channel-specific diagnostic data. The
figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0 0 0 0 0

Configuring/parameter assignment error

Wire break

Figure B-7 Diagnostic Byte for a Channel of the SM 421; DI 16 x 24/60 VUC

Automation System S7-400 Module Specifications

A5E00267842-02 B-7
Diagnostic Data of the Signal Modules

B.4 Diagnostic Data of the Digital Output Modules

as of Byte 2

The structure and contents of the different bytes of the diagnostic data for special
digital output modules are described below. The following general rule applies:
When an error occurs, the bit concerned is set to ”1”.
You will find a description of possible error causes and appropriate remedies in the
section called on the special module.

Bytes 2 and 3 of the SM 422; DO 16 x 20-125 VDC/1.5 A

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0 0

Operating status 0: RUN

1: STOP

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0 0 0

EPROM error

Figure B-8 Bytes 2 and 3 of the Diagnostic Data of the SM 422;

DO 16 x 20-125 VDC/1.5 A

Automation System S7-400 Module Specifications

B-8 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 4 to 8 of the SM 422; DO 16 x 20-125 VDC/1.5 A

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#72: digital output

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 16 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

Figure B-9 Bytes 4 to 8 of the Diagnostic Data of the SM 422; DO 16 x 20-125 VDC/1.5 A

Bytes 9 to 24 of the SM 421; DO 16 x 20-125 VDC/1.5 A

Data record 1 with bytes 9 to 24 contains the channel-specific diagnostic data. The
figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0 0 0 0

Configuring/parameter assignment error

Short-circuit to M
External auxiliary supply missing

Figure B-10 Diagnostic Byte for a Channel of the SM 422; DO 16 x 20-125 VDC/1.5 A

Automation System S7-400 Module Specifications

A5E00267842-02 B-9
Diagnostic Data of the Signal Modules

Bytes 2 and 3 of the SM 422; DO 32 x 24 VDC/0.5 A

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0

Operating status 0: RUN

1: STOP
Module-internal supply voltage failure

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0 0 0

EPROM error

Figure B-11 Bytes 2 and 3 of the Diagnostic Data of the SM 422; DO 32 x 24 VDC/0.5 A

Automation System S7-400 Module Specifications

B-10 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 4 to 10 of the SM 422; DO 32 x 24 VDC/0.5 A

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#72: digital output

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 32 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

7 6 5 4 3 2 1 0
Byte 9

Channel error, channel 16

... Channel error, channel 17
Channel error, channel 22
Channel error, channel 23

7 6 5 4 3 2 1 0
Byte 10

Channel error, channel 24

... Channel error, channel 25
Channel error, channel 30
Channel error, channel 31

Figure B-12 Bytes 4 to 10 of the Diagnostic Data of the SM 422; DO 32 x 24 VDC/0.5 A

Automation System S7-400 Module Specifications

A5E00267842-02 B-11
Diagnostic Data of the Signal Modules

Bytes 11 to 42 of the SM 422; DO 32 x 24 VDC/0.5 A

Data record 1 with bytes 11 to 42 contains the channel-specific diagnostic data.
The figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0 0

Configuring/parameter assignment error

Short-circuit to L+
Short-circuit to M
Wire break
External auxiliary supply missing

Figure B-13 Diagnostic Byte for a Channel of the SM 422; DO 32 x 24 VDC/0.5 A

Bytes 2 and 3 of the SM 422; DO 16 x 20-120 VAC/2 A

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0 0

Operating status 0: RUN

1: STOP

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0 0 0

EPROM error

Figure B-14 Bytes 2 and 3 of the Diagnostic Data of the SM 422; DO 16 x 20-120 VAC/2 A

Automation System S7-400 Module Specifications

B-12 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 4 to 8 of the SM 422; DO 16 x 20-120 VAC/2 A

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#72: digital output

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 16 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

Figure B-15 Bytes 4 to 8 of the Diagnostic Data of the SM 422; DO 16 x 20-120 VAC/2 A

Bytes 9 to 24 of the SM 422; DO 16 x 20-120 VAC/2 A

Data record 1 with bytes 9 to 24 contains the channel-specific diagnostic data. The
figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0 0 0 0 0

Configuring/parameter assignment error

Fuse blown

Figure B-16 Diagnostic Byte for a Channel of the SM 422; DO 16 x 20-120 VAC/2 A

Automation System S7-400 Module Specifications

A5E00267842-02 B-13
Diagnostic Data of the Signal Modules

B.5 Diagnostic Data of the Analog Input Modules

as of Byte 2

The structure and contents of the different bytes of the diagnostic data for the
special analog input modules are described below. The following general rule
applies: When an error occurs, the bit concerned is set to ”1”.
You will find a description of possible error causes and appropriate remedies in the
section called on the special module.

Bytes 2 and 3 of the SM 431; AI 16 x 16 Bit

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0

Measuring range module incorrect or missing

Operating status 0: RUN
1: STOP
7 6 5 4 3 2 1 0
Byte 3 0 0 0 0

EPROM error
RAM error
ADC/DAC error
Hardware interrupt lost

Figure B-17 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 16 x 16 Bit

Automation System S7-400 Module Specifications

B-14 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 4 to 8 of the SM 431; AI 16 x 16 Bit

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#71: analog input

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 8 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 16 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

... Channel error, channel 1
Channel error, channel 6
Channel error, channel 7

7 6 5 4 3 2 1 0
Byte 8

Channel error, channel 8

... Channel error, channel 9
Channel error, channel 14
Channel error, channel 15

Figure B-18 Bytes 4 to 8 of the Diagnostic Data of the SM 431; AI 16 x 16 Bit

Bytes 9 to 24 of the SM 431; AI 16 x 16 Bit

Data record 1 with bytes 9 to 24 contains the channel-specific diagnostic data. The
figure below shows the assignment of the diagnostic byte for a channel of the
module.

7 6 5 4 3 2 1 0
0 0

Configuring/parameter assignment error

Short-circuit to M
Wire break
Reference channel error
Underflow
Overflow

Figure B-19 Diagnostic Byte for a Channel of the SM 431; AI 16 x 16 Bit

Automation System S7-400 Module Specifications

A5E00267842-02 B-15
Diagnostic Data of the Signal Modules

Bytes 2 and 3 of the SM 431; AI 8 x RTD x 16 Bit

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0 0

Operating status 0: RUN

1: STOP

7 6 5 4 3 2 1 0
Byte 3 0 0 0 0 0

EPROM error
ADC/DAC error
Hardware interrupt lost

Figure B-20 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 8 x RTD x 16 Bit

Bytes 4 to 7 of the SM 431; AI 8 x RTD x 16 Bit

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#71: analog input

7 0
Byte 5 Number of diagnostics bits that the module
outputs per channel: 16 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 8 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

Channel error, channel 1
...
...
...
...
...
Channel error, channel 6
Channel error, channel 7

Figure B-21 Bytes 4 to 7 of the Diagnostic Data of the SM 431; AI 8 x RTD x 16 Bit

Automation System S7-400 Module Specifications

B-16 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 8 to 23 of the SM 431; AI 8 x RTD x 16 Bit

Data record 1 with bytes 8 to 23 contains channel-specific diagnostic data. The
following figure shows the assignment of the even diagnostic bytes (bytes 8, 10, to
22) for a channel of the module.

7 6 5 4 3 2 1 0
0 0 0 0

Configuring/parameter assignment error

Wire break
Underflow
Overflow

Figure B-22 Even Diagnostic Byte for a Channel of the SM 431; AI 8 x RTD x 16 Bit

The following figure shows the assignment of the odd diagnostic bytes (bytes 9,
11, to 23) for a channel of the module.

7 6 5 4 3 2 1 0
0

User connection not wired

Open conductor in + direction
Open conductor in -- direction
Run time calibration error
Underrange or overrange
Open conductor in the current source
User calibration doesn’t correspond to the parameter assignment

Figure B-23 Odd Diagnostic Byte for a Channel of the SM 431; AI 8 x RTD x 16 Bit

Automation System S7-400 Module Specifications

A5E00267842-02 B-17
Diagnostic Data of the Signal Modules

Bytes 2 and 3 of the SM 431; AI 8 x 16 Bit

7 6 5 4 3 2 1 0
Byte 2 0 0 0 0 0 0

Thermocouple connection error

Operating status 0: RUN
1: STOP
7 6 5 4 3 2 1 0
Byte 3 0 0 0 0

EPROM error
RAM error
ADC/DAC error
Hardware interrupt lost

Figure B-24 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit

Bytes 4 to 7 of the SM 431; AI 8 x 16 Bit

7 6 5 4 3 2 1 0
Byte 4 0

Channel type B#16#71: analog input

7 0
Byte 5 Number of diagnostic bits that the module
outputs per channel: 16 bits long
7 0
Byte 6 Number of channels of the same
type in one module: 8 channels

7 6 5 4 3 2 1 0
Byte 7

Channel error, channel 0

Channel error, channel 1
...
...
...
...
...
Channel error, channel 6
Channel error, channel 7

Figure B-25 Bytes 4 to 7 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit

Automation System S7-400 Module Specifications

B-18 A5E00267842-02
 Diagnostic Data of the Signal Modules

Bytes 8 to 23 of the SM 431; AI 8 x 16 Bit

Data record 1 with bytes 8 to 23 contains channel-specific diagnostic data. The
following figure shows the assignment of the even diagnostic bytes (bytes 8, 10, to
22) for a channel of the module.

7 6 5 4 3 2 1 0
0 0 0

Configuring/parameter assignment error

Wire break
Reference channel error
Underflow
Overflow

Figure B-26 Even Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit

The following figure shows the assignment of the odd diagnostic bytes (bytes 9,
11, to 23) for a channel of the module.

7 6 5 4 3 2 1 0
0 0 0 0 0 0

Run time calibration error

User calibration doesn’t correspond to the parameter assignment

Figure B-27 Odd Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit

Automation System S7-400 Module Specifications

A5E00267842-02 B-19
Diagnostic Data of the Signal Modules

Automation System S7-400 Module Specifications

B-20 A5E00267842-02
Spare Parts and Accessories C
Spare Parts and Accessories

For Racks
Number wheel for slot labeling C79165-Z1523-A22
Spare slot covers (qty 10) 6ES7490-1AA00-0AA0
For Power Supplies
Spare connector for PS 405 (DC) 6ES7490-0AA00-0AA0
Spare connector for PS 407 (AC) 6ES7490-0AB00-0AA0
Backup battery 6ES7971-0BA00
For Digital Modules/Analog Modules
Cover foil (10 x) for labeling strips of the SMs 6ES7492-2XX00-0AA0
Cover flap for fuse receptacle on the AC modules 6ES7422-0XX00-7AA0
Measuring range module for analog modules 6ES7974-0AA00-0AA0
Front connector screw-type connection 6ES7492-1AL00-0AA0
Front connector spring connection 6ES7492-1BL00-0AA0
Front connector crimp connection 6ES7492-1CL00-0AA0
Crimping tool for crimp contacts 6XX3 071
Crimp contacts (package of 250) 6XX3 070
Extraction tool for crimp contacts 6ES5 497-8MA11
Fuses, 8 A, quick blow
• Wickmann 194-1800-0
• Schurter SP001.1013
• Littelfuse 217.008
Labeling sheet for the front connector, petrol blue 6ES7492-2AX00-0AA0
Labeling sheet for the front connector, beige 6ES7492-2BX00-0AA0
Labeling sheet for the front connector, yellow 6ES7492-2CX00-0AA0
Labeling sheet for the front connector, red 6ES7492-2DX00-0AA0

Automation System S7-400 Module Specifications

A5E00267842-02 C-1
Spare Parts and Accessories

For IMs
Terminating connector for IM 461-0 6ES7461-0AA00-7AA0
Terminating connector for IM 461-1 6ES7461-1AA00-7AA0
Terminating connector for IM 461-3 6ES7461-3AA00-7AA0
IM 463-2, send IM, 600 m to IM 314 of the S5 6ES7463-2AA00-0AA0
IM cable with communication bus, 0.75 m 6ES7468-1AH50-0AA0
IM cable with communication bus, 1.5 m 6ES7468-1BB50-0AA0
IM cable with communication bus, 5 m 6ES7468-1BF00-0AA0
IM cable with communication bus, 10 m 6ES7468-1CB00-0AA0
IM cable with communication bus, 25 m 6ES7468-1CC50-0AA0
IM cable with communication bus, 50 m 6ES7468-1CF00-0AA0
IM cable with communication bus, 100 m 6ES7468-1DB00-0AA0
IM cable with current transmission, 0.75 m 6ES7468-3AH50-0AA0
IM cable with current transmission, 1.5 m 6ES7468-3BB50-0AA0
Package with plug adapters for IM 467 FO 6ES7195-1BE00-0XA0
Package with simplex plugs and polishing set for IM 467 FO 6GK1901-0FB00-0AA0
For Interfacing / Networking
DIN rail 35 mm 6ES5710-8MA...
PROFIBUS bus cable 6XV1830-0BH10
6XV1830-3BH10
PROFIBUS internal cable 6XV1830-0BH10
PROFIBUS grounding cable 6XV1830-3BH10
PROFIBUS bus connector without PG socket 6ES7972-0BA00-0XA0
PROFIBUS bus connector with PG socket 6ES7972-0BB10-0XA0
PROFIBUS bus connector without PG socket for CPU 417 6ES7972-0BA40-0X40
PROFIBUS bus connector with PG socket for CPU 417 6ES7972-0BB40-0X40
PROFIBUS RS 485 bus terminal 6GK1500-0AA00
6GK1500-0AB00
6GK1500-0DA00
PC/MPI cable (5 m) 6ES7901-2BF00-0AA0
For Fan Subassembly
Spare fan for fan subassembly 6ES7408-1TA00-6AA0
Filters (qty 10) for fan subassembly 6ES7408-1TA00-7AA0
Monitoring PCB for fan subassembly 6ES7408-1TX00-6XA0
Power supply PCB for fan subassembly 6ES7408-1XX00-6XA0
Cabinets
Cabinet 2200 x 800 x 400 with extension set for 8 MC 2281-7FC11-8DA1
SIMATIC S7-400
Extension set for SIMATIC S7-400 8 MC 1605-0BS70-0AA0

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C-2 A5E00267842-02
Guidelines for Handling Electrostatic
Sensitive Devices (ESD) D
Introduction
In this appendix, we explain
• what is meant by “electrostatic sensitive devices”
• the precautions you must observe when handling and working with electrostatic
sensitive devices.

Chapter Overview
This chapter contains the following sections on electrostatic sensitive devices:

Section Description Page

D.1 What is ESD? D-2
D.2 Electrostatic Charging of Persons D-3
D.3 General Protective Measures Against Electrostatic Discharge D-4
Damage

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Guidelines for Handling Electrostatic Sensitive Devices (ESD)

D.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 Electrostatic Sensitive Devices are commonly referred to by the
abbreviation ESD.
Electrostatic sensitive devices are labelled with the following symbol:

Caution
! Electrostatic 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.

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D-2 A5E00267842-02
 Guidelines for Handling Electrostatic Sensitive Devices (ESD)

D.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 D-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 61000-4-2.

Voltage in kV
(kV)
16 1 Synthetic material
15
14 2 Wool
13
3 Antistatic material,
12 for example, wood
11 1 or 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 D-1 Electrostatic Voltages which can build up on a person

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A5E00267842-02 D-3
Guidelines for Handling Electrostatic Sensitive Devices (ESD)

D.3 General Protective Measures Against Electrostatic

Discharge Damage

Ensure Sufficient Grounding

Make sure that the personnel, working surfaces and packaging are sufficiently
grounded when handling electrostatic sensitive devices. You thus avoid
electrostatic charging.

Avoid Direct Contact

You should touch electrostatic sensitive devices only if it is unavoidable
(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.

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D-4 A5E00267842-02
List of Abbreviations E
Abbreviation Explanation
AC Alternating current
ADC Analog to digital converter
AI Aanalog input
AO Analog output
AS Automation system
BAF Battery failure
BUSF1; LED -- bus failure on the MPI/Profibus DP interface 1 or 2
BUSF2
CD Central device
CH Channel
COMP Compensating terminal
CP Communications processor
CR Central rack
CPU Central processing unit of a PLC
DAC Digital-to-analog converter
DB Data block
DC Direct current
DI Digital input
DO Digital output
EMC Electromagnetic compatibility
EEPROM Electrically erasable programmable read-only memory
EPROM Erasable programmable read-only memory
ER Expansion rack
ES Encoder supply
ESD Electrostatic sensitive devices
EWS Apply substitute value
EXM Extension module
EXTF Error LED “external fault”
FB Function block
FBD Function block diagram
FC Function
FEPROM Flash erasable programmable read only memory

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List of Abbreviations

FM Function module
FOC Fiber-optic cable
FRCE Force
GD Global data communication
IC Constant-current lead
ID Input delay
IFM1F; IFM2F LED error at interface module 1/2
IM Interface module
INTF Error LED “internal fault”
IP Intelligent periphery
L+ Terminal for 24 VDC supply voltage
LAD Ladder logic diagram
LWH Hold last valid value
M Ground terminal
M+ Measuring lead (positive)
M-- Measuring lead (negative)
MANA Reference potential of the analog measuring circuit
MPI Multipoint interface
MRES Master reset position of the toggle switch
MSM Mass storage module
MSTR Master
OB Organization block
OP Operator panel
OS Operator system
PIQ Process-image output table
PII Process-image input table
PLC Programmable logic controller
PG Programming device
PS Power supply
QI Analog output current
QV Analog output voltage
RAM Random access memory
REDF Redundancy fault
RL Load impedance
S+ Sensor lead (positive)
S -- Sensor lead (negative)
SCL Structured control language
SP Sensor power

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E-2 A5E00267842-02
 List of Abbreviations

SF “Group error” LED

SFB System function block
SFC System function
SM Signal module
SSI Synchronous serial interface
SSL System status list
STL Statement list (representation type in STEP 7)
TD Text display
TR Transducer
UCM Common mode voltage
UH Auxiliary voltage
Uiso Potential difference between MANA and local ground
UC Universal current
UR Universal rack
USR USR
Vs Sensor voltage
VZ Sign

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List of Abbreviations

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E-4 A5E00267842-02
Glossary

Address
An address denotes a specific operand or address area; examples of this are:
input I 12.1; memory word MW 25; data block DB 3.

Aggregate current
Sum of the currents of all output channels on a digital output module.

Backplane bus
The backplane bus is a serial data bus that is used by the modules to
communicate with each other and to supply them with the voltage they require.
The interconnection of the modules is established by the bus connector.

Backup battery
The backup battery ensures that the → user program is stored in a
powerfail-proof manner in the → CPU, and that defined data areas and memory
markers, timers and counters are kept → retentively.

Backup voltage, external

You can obtain the same kind of backup if you apply backup voltage to the “EXT.-
BATT.” socket of the CPU (DC voltage between 5 V and 15 V) as you can with a
backup battery.
External backup voltage is required if you want to replace a power supply module
and to provide a backup supply while the user program and data (for example,
memory markers, timers, counters, system data, integrated clock) stored in RAM
are to be buffered for the time it takes to replace the module.

Basic error limit

The basic error limit is the operation limit at 25 °C, referenced to the rated range
of the analog module.

Bus segment
A bus segment is a self-contained section of a serial bus system. Bus segments
are interconnected by means of → repeaters.

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A5E00267842-02 Glossary-1
Glossary

Central controller
An S7-400 consists of a central controller (CC) that can be allocated expansion
units (EU), as required. The central controller is the mounting rack that contains
the → CPU.

Central processing unit

→ CPU

Cold restart
→ Restart of the programmable controller and its user program, after all the
dynamic data (variables of the input/output image, internal registers, timers,
counters, etc. and the corresponding program sections) have been reset to a
specified value.
A cold restart can be automatically triggered, such as after a power failure or loss
of information in dynamic memory sections, etc., or manually by pressing the
reset key.

Common mode voltage

A voltage that is common to all inputs/outputs of a group and is measured
between this group and any reference point (usually to ground).

Communication load
This is the load on the cyclic program scanning of a CPU caused by
communication operations (for example, via → PROFIBUS DP).
To prevent communication operations overloading cyclic program scanning, you
can set the maximum permissible load that communication can place on the scan
cycle by parameter assignment in STEP 7.

Communication processor
Programmable module for communication tasks, such as networking,
point-to-point connection.

Comparison point
Parameter in STEP 7 for analog input modules. Using this parameter, you can
determine the reference junction (the point where the temperature is known)
when thermocouples are used. The following can be reference junctions:
resistance thermometer on channel 0 of the module; → compensating box,
→ reference temperature.

Compensating box
Compensating boxes can be used for measuring temperatures with
thermocouples on analog input modules. The compensating box is a
compensation circuit for compensating temperature fluctuations at the
→ reference junction.

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 Glossary

CP
→ Communication processor

CPU
The CPU (central processing unit) is a CPU module of the → programmable
controller that stores and runs the user program. It contains the operating
system, memory, processing unit and communication interface.

Data block
Data blocks (DB) are data areas in the user program that contain user data.
Global data blocks can be accessed by all code blocks, whereas instance data
blocks are assigned to a specific FB call.

Data, static
Static data is data that can only be used within a → function block. The data is
saved in an instance data block belonging to the function block. The data stored
in this way is retained until the next function block call.

Data, temporary
Temporary data are → local data of a block that are stored in the L stack during
execution of a block and that are no longer available after execution.

Declaration
Assigning variables (parameters or local data of a block, for example) with a
name, data type, comment, etc.

Default setting
The default setting is a sensible basic setting that is used whenever no other
value is used.

Destruction limit
Limit of the permissible input voltage / current. The accuracy of the measurement
may deteriorate if this limits is violated. The internal measurement circuit could be
destroyed if this limit is exceeded.

Diagnostic buffer
The diagnostic buffer is a buffered memory area in the CPU in which the
diagnostic events are stored in the order in which they occur.
For troubleshooting, the user can read out the exact error cause in STEP 7
(PLC → Module Information) from the diagnostic buffer.

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Glossary

Diagnostic data
All the diagnostic events that occur are collected in the CPU and entered in the
→ diagnostic buffer. If there is an error OB, it is started.

Diagnostic interrupt
Modules with diagnostics capability report system errors to the → CPU by means
of diagnostic interrupts. The operating system of the CPU calls OB 82 in the
course of a diagnostic interrupt.

Diagnostics
Generic term for → system diagnostics, process error diagnostics and
user-defined diagnostics.

Direct communication
Direct communication involves assigning local input address areas of an
intelligent DP slave (for example, CPU 315-2 with PROFIBUS DP connection) or
of a DP master to the input address areas of a PROFIBUS DP partner. The
intelligent DP slave or DP master receives the input data that the PROFIBUS DP
partner sends to its DP master via these assigned input address areas.

DP master
A node with a master function in the PROFIBUS DP. A master that behaves in
accordance with the EN 50170 with the DP protocol is a DP master. The bus
access right (token) is only passed amongst masters. The slaves, in this case DP
slaves, can only respond on the request of a master. The following distinctions
are made:
DP master (class 1): executes the user data communication with the DP slaves
assigned to it.
DP master (class 2): provides services such as: reading of the input/output data,
diagnostics, global control.

DP slave
A → slave that is operated on the PROFIBUS bus system with the
PROFIBUS DP protocol is called a DP slave.

Constant bus cycle time

The constant bus cycle time is a DP bus cycle that is accurate to a few ms and
can be configured in STEP 7.

Equipotential bonding
An electrical connection (equipotential bonding conductor) that brings the bodies
of electrical resources and foreign conductive bodies to an identical or
approximately identical potential in order to avoid interfering or hazardous
voltages between these bodies.

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 Glossary

External load memory

→ Memory card

FB
→ Function block

FC
→ Function

Fiber-optic cable
A fiber-optic cable is a transmission medium made of glass fiber or plastic.
Fiber-optic cables are resistant to electromagnetic faults and they make fast data
transfer rates possible.

Force
The “Force” function overwrites a variable (for example, memory marker, output)
with a value defined by the user.
At the same time, the variable is assigned write protection so that this value
cannot be modified from any point (including from the STEP 7user program). The
value is retained after the programming device is disconnected.
Write protection is not canceled until the ”Unforce” function is called and the
variable is written again with the value defined by the user program.
During commissioning, for example, the “Force” function allows certain outputs to
be set to the ”ON” state for any length of time even if the logic operations of the
user program are not fulfilled (for example, because inputs are not wired).

FREEZE
Control command. The inputs of the → DP slaves are frozen to the current value.

Function
A function (FC) in accordance with IEC 1131-3 is a → code block without
→ static data. A function allows parameters to be passed in the user program.
Functions are therefore suitable for programming complex functions, such as
calculations that are frequently repeated.

Functional grounding
Grounding which has the sole purpose of safeguarding the intended function of
the electrical equipment. Functional grounding short-circuits interference voltage
that would otherwise have an impermissible impact on the equipment.

Function block
A function block (FB) in accordance with IEC 1131-3 is a → code block with
→ static data. Because an FB has a memory, its parameters (outputs, for
example) can be accessed from any position in the user program.

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A5E00267842-02 Glossary-5
Glossary

Fuse blown
Parameter in STEP 7 for digital output modules. When the parameter is enabled,
the failure of one or more fuses is detected by the module. With corresponding
parameter assignment, a → diagnostic interrupt is triggered.

Global data
Global data are data that can be addressed from any → code block (FC, FB,
OB). In detail, this refers to bit memories (M), inputs (I), outputs (Q), timers,
counters and data blocks (DB). Absolute or symbolic access is possible to global
data.

Global data communication

Global data communication is a method of transferring → global data between
CPUs.

Ground
The ground is the total number of all the interconnected inactive parts of a device
that cannot take on a hazardous voltage in the event of a fault.

Ground
The conductive ground whose electric potential can be set to zero at any point.
In the proximity of grounding electrodes, the ground can have a potential other
than zero. The term ”reference ground” is frequently used to describe such
circumstances.

Ground, to
To ground means to connect an electrically conductive part via a grounding
system to the grounding electrode (one or more conductive parts having a very
good contact to ground).

Hardware interrupt
A hardware interrupt is triggered by interrupt-triggering modules in response to a
particular event in the process (limit value violation; the module has completed
the cyclic change of its channels).
The hardware interrupt is reported to the CPU. In accordance with the priority of
this interrupt, the → organization block assigned to it is processed.

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 Glossary

Input delay
Parameter in STEP 7 for digital input modules. The input delay is used to
suppress injected interference. Interfering pulses from 0 ms to the set input delay
are suppressed.
The set input delay is subject to a tolerance that can be obtained from the
technical specifications of the module. A high input delay suppresses long
interfering pulses, whereas a low input delay suppresses short ones.
The permissible input delay depends on the length of the cable between the
encoder and the module. For example, a high input delay has to be set for long
unshielded supply conductors to the encoder (longer than 100m).

Integration time
The integration time is the inverse value of the → interference frequency
suppression in ms.

Interference frequency suppression

Parameter in STEP 7 for analog input modules. The frequency of the AC network
can interfere with the measured value, especially with measurements in low
voltage ranges and with thermocouples. This parameter is used by the user to
specify the prevailing line frequency on his system.

Interrupt
The SIMATIC S7 is familiar with 28 different run-time level, which govern running
of the user program. These run-time levels include interrupts such as hardware
interrupts, among other things. When an interrupt occurs, the operating system
automatically calls an assigned organization block in which the user can program
the reaction he wants (for example, in an FB).

Interrupt, diagnostic
→ Diagnostic Interrupt

Interrupt, end-of-scan-cycle
→ Hardwareinterrupt

Interrupt, hardware
→ Hardware interrupt

Interrupt response time

The interrupt response time is the time from when an interrupt signal first occurs
to calling the first instruction in the interrupt OB. The following general rule
applies: Higher priority interrupts take precedence. This means that the interrupt
response time is increased by the program processing time of the higher priority
interrupt OBs and interrupt OBs with the same priority that have not yet been
processed (queue).

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Glossary

I/O bus
This is part of the → backplane bus in the programmable controller, optimized for
the rapid exchange of signals between the CPU(s) and the signal modules.
User data (for example, digital input signals of a signal module) and system data
(for example, default parameter data records of a signal module) are transferred
via the I/O bus.

Isolated
With optically isolated input/output modules, the reference potentials of the
control and load circuit are galvanically isolated (by an optocoupler, contact
assembly or repeater, for example). Input/output circuits can be connected to
common potential.

Keep last value (KLV)

The module retains the last value read out before STOP mode.

Linearity error
Defines the maximum offset between the measured / output value and the ideal
linear relationship between those signals and the digital value. The value is
defined as a percentage and refers to the rated range of the analog module.

Load memory
The load memory is part of a programmable module (CPU, CP). It contains
objects generated by the programming device (load objects). It is implemented
either as a plug-in memory card or a permanently integrated memory. In the case
of SIMATIC, the load memory can also be defined as a directory on the hard disk.

Measuring principle, instantaneous value encoding

A module with instantaneous value encoding is always used for very fast
measuring operations or variables that change very rapidly. In this process, the
module accesses the variable to be measured as fast as possible and delivers an
instantaneous snapshot of the signal at a particular time. Due to this measuring
procedure, the modules are more “sensitive” than modules with an integrating
measuring procedure. Interference affecting the measured value can thus corrupt
the result. You must ensure when using these modules that the measuring signal
is clean by adhering strictly to the installation guidelines, for example.

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 Glossary

Measuring principle, integrating

A module with an integrating measuring procedure is always used for

non-time-critical measuring operations. The integration time is inversely
proportional to the line frequency. You can set the latter in STEP 7. This then
gives you the integration time. If the line frequency is 50 Hz, the integration time
is 20 ms or an even multiple of that. Because the measured value is included up
to exactly this time period, at least one or more whole periods of the line
frequency, which may overlay the measuring signal, are also included. The
average value of the error is therefore included as zero (positive part of the first
half period = negative part of the second half period). Only the user signal is thus
recorded.

Measuring range module

Measuring range modules are plugged into the analog input modules for
adaptation to different measuring ranges.

Memory reset
In a memory reset, the following memories of the CPU are deleted: working
memory, write/read area of the load memory, system memory.
The MPI parameters and diagnostic buffer are preserved.

Mode selector
Using the mode selector, the user can set the current operating mode of the CPU
(RUN, RUN-P, STOP) or reset the memory of the CPU (MRES).

Module filtering mode

By operating mode we mean:
1. The selection of an operating mode of the CPU using the mode switch or the
PG
2. The type of program execution in the CPU

Non-isolated
In the case of non-isolated input/output modules, the reference potentials of the
control and load circuit are electrically connected.

Operating mode
The SIMATIC S7 programmable controllers have the following operating modes:
STOP, → STARTUP, RUN and STOP.

Operating limit
Defines the measured / output value of the analog module within its entire
temperature range, referenced to the rated range of the analog module.

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Glossary

Operating system
The operating system of the CPU organizes all functions and processes of the
CPU that are not tied to a specific control task.

Parameters
1st tag of a → logic block
2nd tag for setting the characteristics of a module (one or more per module).
When delivered to the customer, each module has a practical basic setting for its
parameters, which the user can modify in STEP 7.

PG
→ Programming device

PLC
→ Programmable controller

Point-to-point connection
Only two nodes are physically linked with one another in a point-to-point
connection. This type of communication link is used if the use of a
communication network is not recommended or when, for example, different
types of partners, such as a PLC and a process computer, are to be connected.

Priority class
The operating system of an S7 CPU has a maximum of 28 priority classes
(= program execution levels) -- for cyclic program scanning or program scanning
controlled by hardware interrupt, for example.
Each priority class is assigned → organization blocks in which the user can
program a response. By default, the OBs have different priorities determining the
order in which they are executed or interrupted in the event that they are
activated simultaneously. The user can change the default priorities.

Process image
The signal states of the digital input and output modules are stored in the CPU in
a process image.
A distinction is made between the process input image and the process output
image. The process input image (PII) is read by the input modules before the
operating system scans the user program. The process output image (PIQ) is
transferred to the output modules at the end of program scanning.

Product status
Products having an identical order number are distinguished by their product
status. The product status is incremented for upwards compatible extensions,
modifications due to production reasons (use of new component parts and
components) and troubleshooting.

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 Glossary

PROFIBUS-DP
Digital, analog and intelligent I/O modules and a wide range of field devices
complying with EN 50170, Part 3, such as drives or valve terminals, are moved
by the automation system to the process on site, over a distance of up to 23 km.
The modules and field devices are connected to the programmable controller by
means of the PROFIBUS-DP fieldbus and addressed in the same way as central
I/O.

Programmable controller
A programmable controller → consists of a → central device, a CPU and diverse
input/output modules.

Programming device
A programming device (PG) is an industry-standard, compact personal computer.
A PG is completely equipped for programming SIMATIC programmable
controllers.

Protection level
The SIMATIC S7 access protection concept prevents the central processing unit
from being accessed by unauthorized persons. It has three protection levels:
Protection level 1: all program device functions allowed
Protection level 2: read-only program device functions allowed
Protection level 3: no program device functions allowed

RC element
Series connection of ohmic resistance and capacitor. When a load is
disconnected, overvoltage occurs in circuits with inductive load. This can result in
an arc and reduce the lifetime of the contacts. To suppress this arc, you can
bridge the contact with an RC element.

Reference ground
→ Ground

Reference channel error

Parameter in STEP 7 for analog input modules. Using this parameter, you can
enable the group error message of the reference junction when thermocouples
are used. A reference channel error occurs when thermocouples are used and
the following occurs:
• If an error occurs (for example, wire break) on a reference channel on which a
thermal resistor (RTD) is connected to compensate for temperature drift
(channel 0).
• If the → reference temperature is outside the permissible range of values.
Each input channel that is assigned the “RTD on Channel 0” reference junction
has a reference channel error in the situation described above. The measured
temperature is no longer compensated.

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Glossary

Reference potential
Potential from which the voltages of the circuits involved are viewed and
measured.

Reference temperature
Parameter in STEP 7 for analog input modules. The reference temperature is the
temperature at the reference junction (in 1/100 oC climatic temperature range)
when thermocouples are used. The reference temperature makes it possible to
measure the temperature correctly using thermocouples. The temperature at the
reference junction must be known because a thermocouple always measures the
difference in temperature between the measuring point and the reference
junction.

Repeater
A device for the amplification of bus signals and connection of → bus segments
over long distances.

Repetitive accuracy
The repetitive accuracy identifies the maximum deviation between
measured/output values when recursive input or output values are applied.
Refers to the rated range of the module and applies to the transient state at a
specific temperature.

Resolution
With analog modules, the number of bits which represent the digitized analog
value in binary. The resolution depends on the module and with analog input
modules on the → integration time. The precision of the resolution of a measured
value increases with the length of the integration time. The resolution can be as
many as 16 bits, including sign.

Response time
The response time is the time from an input signal being detected to the change
to an output signal linked to it.
The actual response time is somewhere between a shortest and a longest
response time. When configuring a system, you must always assume the longest
response time.

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 Glossary

Restart
When a CPU starts up (through the use of the mode selector, for example, or
when the power is switched on), either OB 101 (restart), OB 100 (reboot: warm
restart) or OB 102 (cold restart) is processed before cyclic program scanning (OB
1). It is essential for a restart that the CPU is up.
The following applies: All the data areas (timers, counters, memory markers, data
blocks) and their contents are preserved. The → process input image is read,
and processing of the STEP 7 user program is continued from the point at which
it was last terminated (STOP, power off).
Other types of startup are → cold restart and reboot (→ warm restart).

Retentivity
Data areas in data blocks, and also timers, counters and memory markers are
retentive when their contents are not lost upon a complete restart or POWER
DOWN.

S7 basic communication
Communication functions integrated in the CPU of the SIMATIC S7/M7/C7 that
can be called by the user. The call is executed in the user program by means of
→ system functions. The user data volume can be up to 76 bytes (small data
volume). S7 basic communication is implemented via → MPI.

S7 communication
Communication functions integrated in the CPU of the SIMATIC S7/M7/C7 that
can be called by the user. The call is executed in the user program by means of
→ system function blocks. The user data volume can be up to 64 Kbytes (large
data volume). S7 communication offers a network-independent interface between
devices of the type SIMATIC S7/M7/C7 and the programming device/PC.

Segment
→ Bus segment

Shunt resistor
Parallel or shunt resistor in electrical circuits.

Signal module
Signal modules (SM) form the interface between the process and the
programmable controller. There are input modules, output modules, input/output
modules (both digital and analog).

Smoothing
Parameter in STEP 7 for analog input modules. The measured values are
smoothed by digital filtering. For specific modules it is possible to choose
between no, low, medium and high smoothing. The higher the smoothing, the
greater is the time constant of the digital filter.

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Glossary

Standard communication
Communication via standard and standardized protocols, such as PROFIBUS DP
or PROFIBUS FMS.

STARTUP
The STARTUP mode is traversed during the transition from STOP mode to RUN
mode.
STARTUP can be triggered by the → mode selector or following power-on or by
means of an operator input on the programming device.
Rebooting and restarting are the two different types of startup. Depending on the
position of the mode selector, either a reboot or restart is executed in the case of
the S7-400. A reboot is executed in the case of the M7-300/400.

STEP 7
Parameter assignment and programming software for the parameterization and
creation of user programs for SIMATIC S7 controllers.

Substitute value
Substitute values are values that can be output to the process when signal output
modules have failed or be used in the user program instead of a process value
when signal input modules have failed.
The substitute values can be assigned parameters by the user in STEP 7 (old
value retained, substitute value 0 or 1). They are values which the output(s) have
to output in the event of a CPU STOP.

SYNC

Control command of the → master to the → slave: freeze the outputs at their
current value.

System diagnostics
System diagnostics is the detection, analysis and reporting of errors that occur
within the programmable controller. Examples of such errors are: program errors
or failures on modules. System errors can be indicated with LED displays or in
STEP 7.

System function
A system function (SFC) is a function integrated in the operating system of the
CPU that can be called in the STEP 7 user program like a function (→ FC), as
required.

Automation System S7-400 Module Specifications

Glossary-14 A5E00267842-02
 Glossary

System function block

A system function block (SFB) is a → function block integrated in the operating
system of the CPU that can be called in the STEP 7 user program like a function
block (FB), as required. The associated instance data block is in working
memory.

Temperature coefficient
Parameter in STEP 7 for analog input modules when measuring temperatures
with a resistance thermometer (RTD). The temperature coefficient you select
depends on the resistance thermometer being used (to DIN standard).

Temperature error
Defines the drift of the measured / output value of the analog module due to
changes in temperature. The value is defined in a percentage per Kelvin and
refers to the rated range of the analog module.

Temperature error of the internal compensation

This error occurs only when measurements are carried out with thermocouples.
In addition to the actual temperature error, it also identifies the additive error
when ”internal comparison” is selected. The error is defined either as a
percentage of the physical range of the analog module, or as the absolute value
in °C.

Transmission rate
Rate of data transmission (bit/s)

Two-conductor/three-conductor/four-conductor connection
Method of connection to the module -- for example, of resistance
thermometers/resistors to the front connector of the analog input module or of
loads at the voltage output of an analog output module.

Two-wire transmitter/four-wire transmitter

Kind of transmitter (two-wire transmitter: supply (via terminals of the analog input
module; four-wire transmitter: supply via separate terminals of the transmitter)

Unforce
→ Force

Ungrounded
Without galvanic connection to ground

Automation System S7-400 Module Specifications

A5E00267842-02 Glossary-15
Glossary

Warm restart
This is a reboot after a power failure using a set of dynamic data programmed by
the user and a user program section defined in the system.
A warm restart is indicated by setting a status bit or by some other appropriate
means that can be read by the user program and indicate that the standstill of the
programmable controller, brought about by a power failure, has been detected in
RUN mode.

Wire break
Parameter in STEP 7. A wire break test is used for monitoring the connection
from the input to the encoder and from the output to the actuator. With wire
break, the module detects a flow of current at the appropriately parameterized
input/output.

Working memory
The working memory is a → random access memory in the → CPU which the
processor accesses during program execution of the user program.

Automation System S7-400 Module Specifications

Glossary-16 A5E00267842-02
Index
A parameters, 5-39, A-9
potential difference, 5-42
Accessories, C-1
RAM error, 5-64
Actuator connection, to analog output module,
reference channel error, 5-65
5-58
reference junction, 5-40
ADC-DAC error, analog input module, 5-64
reference temperature, 5-40
Address, Glossary-1
run time calibration error, 5-65
Address area, setting, 7-9
SM 431; AI 16 x 13 Bit, 5-97
Aggregate current, Glossary-1
SM 431; AI 16 x 16 Bit, 5-105
Ambient conditions, 1-13, 7-2
SM 431; AI 8 x 13 Bit, 5-68
climatic, 1-15
SM 431; AI 8 x 14 Bit, 5-74, 5-88
mechanical, 1-13
SM 431; AI 8 x 16 Bit, 5-129
Analog functions, STEP 7 blocks, 5-1
SM 431; AI 8 x RTD x 16 Bit, 5-120
Analog input module
smoothing of analog input values, 5-35,
ADC-DAC error, 5-64
5-40
channel error, 5-64
STOP operating mode, 5-64
channel information available, 5-64
structure of data record 1, A-10
configuring error, 5-65
temperature coefficient, 5-40
connecting resistance thermometers, 5-49
temperature unit, 5-40
connecting resistors, 5-49
underflow, 5-65
connecting sensor, 5-42
wire break, 5-65
connecting thermocouple, 5-52
wire break check, 5-39
diagnostic data, B-14
Analog input modules
diagnostic interrupt, 5-39
causes of errors and remedies, 5-64
diagnostic message in measured value,
diagnostic messages, 5-63
5-62
Analog module
diagnostics, 5-39
assigning parameters, 5-38
EPROM error, 5-64
behavior, 5-30
external malfunction, 5-64
determination of measuring error/output
ground short circuit, 5-65
error, 5-33
hardware interrupt lost, 5-65
diagnostics, 5-62
incorrect parameters, 5-64
EXTF LED, 5-62
interference frequency suppression, 5-40
interrupts, 5-66
internal malfunction, 5-64
INTF LED, 5-62
isolated, 5-42
load voltage failure, 5-31
limit value, 5-39
sequence of steps for commissioning, 5-5
measurement, 5-40
Analog output channel
measuring range, 5-40
conversion time, 5-36
measuring range module incorrect/missing,
response time, 5-37
5-64
measuring type, 5-40
module malfunction, 5-64
no external auxiliary voltage, 5-64
no front connector, 5-64
non-isolated, 5-42
overflow, 5-65
parameter assignment error, 5-65
parameter assignment missing, 5-64

Automation System S7-400 Module Specifications

A5E00267842-02 Index-1
Index

Analog output module C

connecting loads and actuators, 5-58
Cable length, 7-3
connecting loads to current output, 5-61
selecting, 7-7
connecting loads to voltage output, 5-59
Cable length selector switch, 7-5
isolated, 5-58
Cables, for analog signals, 5-42, 5-58
output, 5-41
Causes of errors and remedies
output range, 5-41
analog input module, 5-64
output type, 5-41
digital module, 4-11
parameters, 5-41
CE mark, 1-2
response time, 5-37
Central controller, Glossary-2
settling time, 5-37
Channel error
SM 432; AO 8 x 13 Bit, 5-141
analog input module, 5-64
Analog value
digital module, 4-11
conversion, 5-6
Channel information available
sign, 5-6
analog input module, 5-64
Analog value representation, 5-6
digital module, 4-11
binary representation of input ranges, 5-9
Cold restart, Glossary-2
binary representation of output ranges, 5-22
Commissioning analog modules, sequence of
for current measuring ranges, 5-12–5-15
steps, 5-5
for current output ranges, 5-26–5-29
Commissioning digital modules, sequence of
for resistance thermometers, 5-14, 5-15,
steps, 4-5
5-16
Common mode voltage, Glossary-2
for resistance-type sensors, 5-13
Communication bus, 2-4
for thermocouple, 5-17, 5-18, 5-19, 5-20,
Communication load, Glossary-2
5-21
Communication processor, Glossary-2
for voltage measurement ranges, 5-11
Comparison point, 5-56, Glossary-2
for voltage measuring ranges, 5-10–5-12
Compensating box, 5-54, Glossary-2
for voltage output ranges, 5-25–5-28
connecting, 5-55
Analog-to-digital conversion, 5-34
Compensation
Approvals, 1-2
external, 5-54
Area of application, 7-2
internal, 5-53, 5-55
Auxiliary voltage missing
Configuring error, analog input module, 5-65
analog input module, 5-64
Connecting cable, 6-5
digital module, 4-11
plugging in, 7-7
preparing, 7-6
Connecting cable 721, 7-11
B Connection
Backplane bus, Glossary-1 distributed, 7-2
Backup battery, Glossary-1 rules, 6-4
shipping and storage conditions, 1-11 Conversion time
technical specifications, 3-6 analog input channels, 5-34
Backup time, 3-7 analog output channel, 5-36
calculating, 3-7 Converting, analog values, 5-6
Backup voltage, external, Glossary-1 CP, Glossary-2
Basic error limit, 5-32, Glossary-1 CPU, Glossary-3
Basic execution time CSA, 1-4
analog input channels, 5-35 Current sensors, connecting, 5-46
analog output channels, 5-37
Battery. See backup battery
Bus segment, Glossary-1
Bytes 0 and 1, of diagnostic data, B-3

Automation System S7-400 Module Specifications

Index-2 A5E00267842-02
 Index

D Diagnostics entry, 5-31

Digital input module
Data
diagnostic data, B-4
static, Glossary-3
diagnostic interrupt enable, 4-7
temporary, Glossary-3
diagnostics, 4-7
Data block, Glossary-3
hardware interrupt enable, 4-7
Data record, for diagnostic data, B-2
input delay, 4-7
Data record 1
keep last value, 4-7
analog input module configuration, A-10
no load voltage L+, 4-7
digital output module configuration, A-7
parameters, 4-7
structure for digital input module, A-4
sensor supply missing, 4-7
Data records, for parameters, A-2
SM 421; DI 16 x 120 VAC, 4-28
Declaration, Glossary-3
SM 421; DI 16 x 120/230 VUC, 4-36, 4-38
Default setting, Glossary-3
SM 421; DI 16 x 24 VDC, 4-20
Degree of protection, 1-16
SM 421; DI 16 x 24/60 VUC, 4-31
IP 20, 1-16
SM 421; DI 32 x 120 VUC, 4-41
Destination CPU for interrupt, digital output
SM 421; DI 32 x 24 VDC, 4-17
module, 4-8
structure of data record 1, A-4
Destruction limit, Glossary-3
substitute ”1”, 4-7
Diagnostic buffer, Glossary-3
substitute a value, 4-7
Diagnostic data, Glossary-4
wire break check, 4-7
bytes 0 and 1, B-3
Digital input modules, parameters, A-3
data record, B-2
of the analog input modules, B-14
of the digital input modules, B-4
of the digital output modules, B-8
of the SM 421; DI 16 x 24 VDC, B-4
of the SM 421; DI 16 x 24/60 VUC, B-6
of the SM 422; DO 16 x 20-120 VAC/2 A,
B-12
of the SM 422; DO 16 x 20-125 VDC/1.5 A,
B-8
of the SM 422; DO 32 x 24 VDC/0.5 A, B-10
of the SM 431; AI 16 x 16 Bit, B-14
of the SM 431; AI 8 x 16 Bit, B-18
of the SM 431; AI 8 x RTD x 16 Bit, B-16
Diagnostic interrrupt enable
digital input module, 4-7
digital output module, 4-8
Diagnostic interrupt
of analog modules, 5-66
of digital modules, 4-13
Diagnostic messages, 4-9, 5-62
of analog input modules, 5-63
of the digital modules, 4-10
reading out, 4-9, 5-62
Diagnostics
analog input module, 5-39
digital input module, 4-7
digital output module, 4-8
of analog modules, 5-62
of digital modules, 4-9
system, Glossary-14

Automation System S7-400 Module Specifications

A5E00267842-02 Index-3
Index

Digital module DP slave, Glossary-4

assigning parameters, 4-6
causes of errors and remedies, 4-11
channel error, 4-11 E
channel information available, 4-11
Electromagnetic compatibility, 1-8
diagnostic messages, 4-10
EMC directive, 1-3
diagnostics, 4-9
EMV, 7-2
EPROM error, 4-11
EPROM error
external malfunction, 4-11
analog input module, 5-64
EXTF LED, 4-9
digital module, 4-11
fuse blown, 4-12
Equidistance, Glossary-4
hardware interrupt, 4-14
Equipotential bonding, Glossary-4
hardware interrupt lost, 4-11, 4-14
Error, of an analog module, 5-33
internal malfunction, 4-11
External malfunction
internal voltage failure, 4-11
analog input module, 5-64
interrupt-triggering channels, 4-14
digital module, 4-11
interrupts, 4-13
EXTF LED
INTF LED, 4-9
analog module, 5-62
M short circuit, 4-11
digital module, 4-9
module malfunction, 4-11
no auxiliary voltage, 4-11
no front connector, 4-11
no load voltage L+, 4-12 F
no sensor supply, 4-12 FB, Glossary-5
parameter assignment error, 4-11 FC, Glossary-5
parameter assignment missing, 4-11 Fiber-optic cable, Glossary-5
sequence of steps for commissioning, 4-5 FM, approval, 1-7
short circuit to L+, 4-11 Force, Glossary-5
STOP mode, 4-11 Four-conductor connection, 5-50, Glossary-15
wire break, 4-11 Four-wire transmitter, Glossary-15
wrong parameters, 4-11 Four-wire transmitters, 5-48
Digital output module FREEZE, Glossary-5
destination CPU for Interrupt, 4-8 Front connector missing
diagnostic data, B-8 analog input module, 5-64
diagnostic interrupt enable, 4-8 digital module, 4-11
diagnostics, 4-8 Function (FC), Glossary-5
fuse blown, 4-8 Function block (FB), Glossary-5
keep last value, 4-8 Functional grounding, Glossary-5
no load voltage L+, 4-8 Fuse blown, Glossary-6
parameters, 4-8, A-6 digital module, 4-12
short circuit to L+, 4-8 digital output module, 4-8
short circuit to M, 4-8
SM 422; DO 16 x 120/230 VAC/2 A, 4-64
SM 422; DO 16 x 20--120 VAC/2 A, 4-68 G
SM 422; DO 16 x 20--125 VDC/1.5 A, 4-47
Global data, Glossary-6
SM 422; DO 16 x 24 VDC/2 A, 4-44
Ground, Glossary-6
SM 422; DO 16 x 30/230 VUC/Rel.5 A, 4-72
Ground short circuit, analog input module, 5-65
SM 422; DO 32 x 24 VDC/0.5 A, 4-52, 4-55
Grounded operation, RS 485 repeater, 10-4
SM 422; DO 8 x 120/230 VAC/5 A, 4-61
structure of data record 1, A-7
substitute ”1”, 4-8
substitute a value, 4-8
wire break check, 4-8
Direct communication, Glossary-4
DP master, Glossary-4

Automation System S7-400 Module Specifications

Index-4 A5E00267842-02
 Index

H Internal fault (INTF), 3-13

Internal malfunction
Hardware interrupt, Glossary-6
analog input module, 5-64
end of scan cycle, 5-67
digital module, 4-11
of digital modules, 4-14
Internal voltage failure, digital module, 4-11
when limit exceeded, 5-67
Interrupt, Glossary-7
Hardware interrupt enable, digital input
Interrupt response time, Glossary-7
module, 4-7
Interrupt-triggering channels, of the digital
Hardware interrupt lost
module, 4-14
analog input module, 5-65
Interrupts
digital module, 4-11, 4-14
enabling, 4-13, 5-66
of analog modules, 5-66
of the digital modules, 4-13
I INTF LED
I/O bus, 2-4, Glossary-8 analog module, 5-62
IEC 61131-2, 1-2 digital module, 4-9
IM 314, 7-2 IP 20, 1-16
IM 467, 8-2 Isolated, Glossary-8
communication services, 8-3 Isolated measuring sensor, 5-43
configuration, 8-6 Isolated measuring sensors, connecting, 5-43
connection to PROFIBUS DP, 8-7
technical specifications, 8-11
IM 467 FO, 8-2 K
communication services, 8-3
Keep last value
configuration, 8-6
digital input module, 4-7
connection to PROFIBUS DP, 8-7
digital output module, 4-8
fiber-optic cable, connecting, 8-9
KLV, Glossary-8
technical specifications, 8-12
Input characteristic curve to IEC 61131, for
digital inputs, 4-15
Input delay, Glossary-7 L
digital input module, 4-7 LEDs, 7-5
Insulation test, 1-16 Limit value, analog input module, 5-39
Integration time, Glossary-7 Linearity error, Glossary-8
Interface, selecting, 7-7 Load connection, to analog output module,
Interface module 5-58
IM 460-1 and IM 461-1, 6-10 Load connection to current output, on analog
IM 460-3, 6-14 output module, 5-61
IM 460-3 and IM 461-3, 6-14 Load connection to voltage output, to analog
IM 460-4, 6-18 output module, 5-59
IM 460-4 and IM 461-4, 6-18 Load memory, Glossary-8
IM 461-3, 6-14 Load voltage failure, of the analog module,
Interface modules 5-31
IM 460-0, 6-7 Load voltage L+ missing, digital module, 4-12
IM 460-1, 6-10 Low voltage directive, 1-3
IM 461-0, 6-7
IM 461-1, 6-10
IM 461-4, 6-18 M
Interface selector switch, 7-5
M short circuit, digital module, 4-11
Interference
Manual, purpose, iii
pulse-shaped, 1-9
Marine approvals, 1-7
sinusoidal, 1-9
Maximum expansion, 7-3
Interference frequency suppression,
Measurement, analog input module, 5-40
Glossary-7
analog input module, 5-40

Automation System S7-400 Module Specifications

A5E00267842-02 Index-5
Index

Measuring method, analog input channels, Order number

5-27 6ES7 401-2TA01-0AA0, 2-7
Measuring principle 6ES7 405-0DA01-0AA0, 3-24
instantaneous value encoding, Glossary-8 6ES7 405-0KA01-0AA0, 3-26
integrating, Glossary-9 6ES7 405-0KA02-0AA0, 3-28
Measuring range 6ES7 405-0KR00-0AA0, 3-26
analog input channels, 5-27 6ES7 405-0RA01-0AA0, 3-30
analog input module, 5-40 6ES7 407-0DA01-0AA0, 3-18
Measuring range module, 5-27 6ES7 407-0KA01-0AA0, 3-20
replugging, 5-28 6ES7 407-0KR00-0AA0, 3-20
Measuring range module incorrect/missing, 6ES7 407-0RA01-0AA0, 3-22
analog input module, 5-64 6ES7 421-1BL01-0AA0, 4-17
Measuring sensor, isolated, 5-43 6ES7 421-1EL00-0AA0, 4-41
Measuring type, analog input module, 5-40 6ES7 421-1FH00-0AA0, 4-36
Memory reset, Glossary-9 6ES7 421-1FH20-0AA0, 4-38
Mode selector, Glossary-9 6ES7 421-5EH00-0AA0, 4-28
Module classes, ID, B-3 6ES7 421-7BH00-0AB0, 4-20
Module filtering mode, Glossary-9 6ES7 421-7DH00-0AB0, 4-31
Module malfunction 6ES7 422-1BH11-0AA0, 4-44
analog input module, 5-64 6ES7 422-1BL00-0AA0, 4-52
digital module, 4-11 6ES7 422-1FF00-0AA0, 4-61
Module overview, 5-3 6ES7 422-1FH00-0AA0, 4-64
digital modules, 4-3 6ES7 422-1HH00-0AA0, 4-72
Modules, shipping and storage conditions, 1-11 6ES7 422-5EH00-0AB0, 4-68
6ES7 422-5EH10-0AB0, 4-47
6ES7 422-7BL00-0AB0, 4-55
N 6ES7 431-0HH00-0AB0, 5-97
6ES7 431-1KF00-0AB0, 5-68
No load voltage L+, digital output module, 4-8
6ES7 431-1KF10-0AB0, 5-74
Non-isolated, Glossary-9
6ES7 431-1KF20-0AB0, 5-88
Non-isolated sensors, 5-43
6ES7 431-7KF00-0AB0, 5-129
connecting, 5-44
6ES7 431-7KF10-0AB0, 5-120
6ES7 431-7QH00-0AB0, 5-105
6ES7 432-1HF00-0AB0, 5-141
O 6ES7 460-0AA01-0AB0, 6-7
OB 40, 4-14, 5-67 6ES7 460-1BA01-0AB0, 6-10
start information, 5-67 6ES7 460-3AA01-0AB0, 6-14
OB 82, 4-13, 5-66 6ES7 460-4AA01-0AB0, 6-18
Operating conditions, 1-13 6ES7 461-0AA01-0AA0, 6-7
Operating limit, Glossary-9 6ES7 461-1BA01-0AA0, 6-10
Operating mode, Glossary-9 6ES7 461-3AA01-0AA0, 6-14
of CPU, 5-30 6ES7 461-4AA01-0AA0, 6-18
Operating system, Glossary-10 6ES7 467-5FJ00-0AB0, 8-2
Operational limit, 5-32 6ES7 467-5GJ00-0AB0, 8-2
6ES7 467-5GJ01-0AB0, 8-2
6ES7 467-5GJ02-0AB0, 8-2
6ES7 972-0AA01-0XA0, 10-2

Automation System S7-400 Module Specifications

Index-6 A5E00267842-02
 Index

Output, analog output module, 5-41 Pulse-shaped interference, 1-9

Output analog values, STEP 7 blocks, 5-1
Output range, analog output module, 5-41
Output type, analog output module, 5-41 R
Overflow, analog input module, 5-65
Rack
CR2, 2-6
CR3, 2-7
P ER1, 2-8
Parameter assignment ER2, 2-8
for analog modules, 5-38 UR1, 2-3, 2-4
for digital modules, 4-6 UR2, 2-3, 2-4
in user program, A-2 Radio interference, emission of, 1-10
Parameter assignment error RAM error, analog input module, 5-64
analog input module, 5-65 RC element, Glossary-11
digital module, 4-11 Read analog values, STEP 7 blocks, 5-1
Parameter assignment missing Redundant operation, 3-4
analog input module, 5-64 Redundant power supply modules, 3-4
digital module, 4-11 Reference channel error, Glossary-11
Parameters, Glossary-10 analog input module, 5-65
analog input module, 5-39, A-9 Reference junction, analog input module, 5-40
analog output module, 5-41 Reference junction temperature with
data records, A-2 thermocouples, compensating, 5-53
digital input module, 4-7 Reference potential, Glossary-12
digital input modules, A-3 Reference temperature, Glossary-12
digital output module, 4-8, A-6 analog input module, 5-40
dynamic, 4-6, 5-38 Repeater, Glossary-12
modifying in user program, 4-6, 5-38 See also RS 485 repeater
static, 4-6, 5-38 Resistance thermometer connection, to analog
Parameters incorrect, analog input module, input module, 5-49
5-64 Resistor connection, to analog input module,
PARM_MOD, SFC 57, A-2 5-49
Permissible potential differences, 7-3 Resolution, 5-6, Glossary-12
Pin assignment, RS 485 repeater, 10-6 Response time, 5-37, Glossary-12
Point-to-point connection, Glossary-10 Restart, Glossary-13
Potential difference, with analog input modules, Retentivity, Glossary-13
5-42 RS 485 repeater, 10-1
Power supply module appearance, 10-3
PS 405 10A, 3-26, 3-28 application, 10-2
PS 405 10A R, 3-26 definition, 10-2
PS 405 20A, 3-30 grounded, 10-4
PS 405 4A, 3-24 grounded operation, 10-4
PS 407 10A, 3-20 rules, 10-2
PS 407 10A R, 3-20 ungrounded, 10-4
PS 407 20A, 3-22 ungrounded operation, 10-4
PS 407 4A, 3-18 Run time calibration error, analog input
Priority class, Glossary-10 module, 5-65
Process image, Glossary-10
Product status, Glossary-10
PROFIBUS DP, Glossary-11 S
PROFIBUS DP master interface, 8-2
S5 modules, configuring, 7-10
Programmable controller, Glossary-11
S7 basic communication, Glossary-13
Programming device (PG), Glossary-11
S7 communication, Glossary-13
Protection class, 1-16
Protection level, Glossary-11
Pulse edge, 4-7

Automation System S7-400 Module Specifications

A5E00267842-02 Index-7
Index

Scan time Substitute a value

analog input channels, 5-34 digital input module, 4-7
analog output channels, 5-36 digital output module, 4-8
Sensor connection, to analog input module, Substitute value, Glossary-14
5-42 SYNC, Glossary-14
Sensor supply missing System diagnostics, Glossary-14
digital input module, 4-7 System function (SFC), Glossary-14
digital module, 4-12 System function block (SFB), Glossary-15
Sensors, non-isolated, 5-43 System perturbation, 1-10
Settling time, 5-37
SFB, Glossary-15
SFC, Glossary-14 T
SFC 51, 4-13, 5-66
Technical specifications
SFC 55 WR_PARM, A-2
IM 460-0 and 461-0, 6-9
SFC 56 WR_DPARM, A-2
IM 460-1 and 461-1, 6-13
SFC 57 PARM_MOD, A-2
IM 460-3 and 461-3, 6-17
SFC 59, 4-13, 5-66
IM 460-4 and 461-4, 6-21
Short circuit to L+
PS 405 10A, 3-27, 3-29
digital module, 4-11
PS 405 10A R, 3-27, 3-29
digital output module, 4-8
PS 405 20 A, 3-31
Short circuit to M, digital output module, 4-8
PS 405 4 A, 3-25
Shunt resistor, Glossary-13
PS 407 10A, 3-21
Sign, analog value, 5-6
PS 407 10A R, 3-21
Signal module, Glossary-13
PS 407 20 A, 3-23
Sinusoidal interference, 1-9
PS 407 4 A, 3-19
SM 421; DI 16 x 24 VDC, diagnostic data, B-4
RS 485 repeater, 10-6
SM 421; DI 16 x 24/60 VUC, diagnostic data,
Temperature coefficient, Glossary-15
B-6
analog input module, 5-40
SM 422; DO 16 x 20-120 VAC/2 A, diagnostic
Temperature error, Glossary-15
data, B-12
Temperature error of the internal
SM 422; DO 16 x 20-125 VDC/1.5 A,
compensation, Glossary-15
diagnostic data, B-8
Temperature unit, analog input module, 5-40
SM 422; DO 32 x 24 VDC/0.5 A, diagnostic
Terminating connector, 7-3, 7-13
data, B-10
Test voltages, 1-16
SM 431; AI 16 x 16 Bit, diagnostic data, B-14
Thermo emf, 5-52
SM 431; AI 8 x 16 Bit, diagnostic data, B-18
Thermocouple
SM 431; AI 8 x RTD x 16 Bit, diagnostic data,
design, 5-52
B-16
principle of operation, 5-52
Smoothing, Glossary-13
Thermocouple connection, to analog input
Smoothing of analog input values, 5-35
module, 5-52
analog input module, 5-40
Three-conductor connection, 5-51, Glossary-15
Spare parts, C-1
Transmission rate, Glossary-15
Standard communication, Glossary-14
Two-conductor connection, 5-51, Glossary-15
Standards, 1-2
Two-wire transmitter, Glossary-15
Startup, Glossary-14
Two-wire transmitters, 5-47
STEP 7, Glossary-14
STEP 7 blocks, for analog functions, 5-1
STOP mode, digital module, 4-11
STOP operating mode, analog input module, U
5-64 UL, 1-4
Substitute ”1” Underflow, analog input module, 5-65
digital input module, 4-7 Ungrounded operation, RS 485 repeater, 10-4
digital output module, 4-8 User program, parameter assignment in, A-2

Automation System S7-400 Module Specifications

Index-8 A5E00267842-02
 Index

V Wire break check

digital input module, 4-7
Vibrations, 1-13
digital output module, 4-8
Voltage sensors, connecting, 5-45
Working memory, Glossary-16
WR_DPARM, SFC 56, A-2
WR_PARM, SFC 55, A-2
W Wrong parameters, digital module, 4-11
Warm restart, Glossary-16
Wire break, Glossary-16
analog input module, 5-65
digital module, 4-11

Automation System S7-400 Module Specifications

A5E00267842-02 Index-9
Index

Automation System S7-400 Module Specifications

Index-10 A5E00267842-02