1

Communications
Methods

2
CompoWay/F Commu-
nications Procedures

Digital Temperature Controllers 3

Communications
Data for CompoWay/F

4
Modbus Communica-
Communications Manual tions Procedure

E5@C 5
Communications
Data for Modbus

6
Programless
Communications

7
Component
Communications

A
Appendices

I
Index

H175-E1-05
 Preface

Preface
This Communications Manual describes the communications capabilities supported by the E5@C Digi-
tal Controllers.
Read and understand this manual before using communications with the E5@C Digital Controllers and
be sure you are performing communications correctly.
Keep this manual in a safe location where it will be available when needed.

© OMRON, 2011
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form,
or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is
constantly striving to improve its high-quality products, the information contained in this manual is subject to change
without notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no
responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information
contained in this publication.

E5@C Digital Temperature Controllers Communications Manual (H175) 1

 Read and Understand this Manual

Read and Understand this Manual

Please read and understand this manual before using the products. Please consult your OMRON
representative if you have any questions or comments.

Warranty and Limitations of Liability

WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a
period of one year (or other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING

NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT
LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which
liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS

REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

2 E5@C Digital Temperature Controllers Communications Manual (H175)

 Read and Understand this Manual

Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer's application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses
listed may be suitable for the products:

• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or
uses not described in this manual.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED
FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

E5@C Digital Temperature Controllers Communications Manual (H175) 3

 Read and Understand this Manual

Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.

It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be changed
without any notice. When in doubt, special model numbers may be assigned to fix or establish key
specifications for your application on your request. Please consult with your OMRON representative at any
time to confirm actual specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.

PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and does
not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and
Limitations of Liability.

ERRORS AND OMISSIONS

The information in this manual has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

4 E5@C Digital Temperature Controllers Communications Manual (H175)

 Safety Precautions

Safety Precautions
Definition of Precautionary Information
The following notation is used in this manual to provide precautions required to ensure safe usage of
the E5@C Digital Controllers.
The safety precautions that are provided are extremely important to safety. Always read and heed the
information provided in all safety precautions.
The following notation is used.

Indicates a potentially hazardous situation which, if not

CAUTION avoided, may result in minor or moderate injury or in prop-
erty damage.

Symbols

Symbol Meaning

• General Caution
Indicates non-specific general cautions, warnings, and dangers.
Caution
• Electrical Shock Caution
Indicates possibility of electric shock under specific conditions.

• General Prohibition
Prohibition
Indicates non-specific general prohibitions.

Mandatory • General Caution

Caution Indicates non-specific general cautions, warnings, and dangers.

E5@C Digital Temperature Controllers Communications Manual (H175) 5

 Safety Precautions

z Safety Precautions

CAUTION

Minor injury due to electric shock may occasionally occur.

Do not touch the terminals while power is being supplied.

Electric shock, fire, or malfunction may occasionally occur.

Do not allow metal objects, conductors, cuttings from installation
work, or moisture to enter the Digital Controller or a Setup Tool port.
Attach the cover to the front-panel Setup Tool port whenever you are
not using it to prevent foreign objects from entering the port.

Minor injury from explosion may occasionally occur.

Do not use the product where subject to flammable or explosive gas.

Fire may occasionally occur.

Do not allow dirt or other foreign objects to enter a Setup Tool port,
or between the pins on the connectors on the Setup Tool cable.

Minor electric shock, fire, or malfunction may occasionally occur.

Never disassemble, modify, or repair the product or touch any of the
internal parts.

CAUTION - Risk of Fire and Electric Shock

(a) This product is UL recognized as Open Type Process Control
Equipment. It must be mounted in an enclosure that does not
allow fire to escape externally.
(b) More than one disconnect switch may be required to
de-energize the equipment before servicing.
(c) Signal inputs are SELV, limited energy.*1
(d) Caution: To reduce the risk of fire or electric shock, do not
interconnect the outputs of different Class 2 circuits.*2

If the output relays are used past their life expectancy, contact fusing
or burning may occasionally occur.
Always consider the application conditions and use the output relays
within their rated load and electrical life expectancy. The life
expectancy of output relays varies considerably with the output load
and switching conditions.
*1 An SELV circuit is one separated from the power supply with double insulation or reinforced insulation,
that does not exceed 30 V r.m.s. and 42.4 V peak or 60 VDC.
*2 A class 2 power supply is one tested and certified by UL as having the current and voltage of the
secondary output restricted to specific levels.

6 E5@C Digital Temperature Controllers Communications Manual (H175)

 Safety Precautions

CAUTION
Loose screws may occasionally result in fire.
Tighten the terminal screws to the specified torque of 0.43 to
0.58 N·m.

Set the parameters of the product so that they are suitable for the
system being controlled. If they are not suitable, unexpected
operation may occasionally result in property damage or accidents.

A malfunction in the Digital Controller may occasionally make control

operations impossible or prevent alarm outputs, resulting in property
damage. To maintain safety in the event of malfunction of the Digital
Controller, take appropriate safety measures, such as installing a
monitoring device on a separate line.

E5@C Digital Temperature Controllers Communications Manual (H175) 7

 Precautions for Safe Use

Precautions for Safe Use

Be sure to observe the following precautions to prevent operation failure, malfunction, or adverse
affects on the performance and functions of the product. Not doing so may occasionally result in unex-
pected events. Use the product within specifications.
• The product is designed for indoor use only. Do not use or store the product in any of the following
locations.
Locations directly subject to heat radiated from heating equipment.
Locations subject to splashing liquid or oil atmosphere.
Locations subject to direct sunlight.
Locations subject to dust or corrosive gas (in particular, sulfide gas and ammonia gas).
Locations subject to intense temperature change.
Locations subject to icing and condensation.
Locations subject to vibration and large shocks.
• Use and store the Digital Controller within the rated ambient temperature and humidity.
Gang-mounting two or more Digital Controllers, or mounting Digital Controllers above each other may
cause heat to build up inside the Digital Controllers, which will shorten their service life. In such a
case, use forced cooling by fans or other means of air ventilation to cool down the Digital Controllers.
• To allow heat to escape, do not block the area around the product. Do not block the ventilation holes
on the product.
• Be sure to wire properly with correct polarity of terminals.
• Use the specified size of crimped terminals (M3, width of 5.8 mm or less) for wiring. To connect bare
wires to the terminal block, use copper braided or solid wires with a gage of AWG24 to AWG18
(equal to a cross-sectional area of 0.205 to 0.8231 mm2). (The stripping length is 6 to 8 mm.) Up to
two wires of the same size and type, or two crimped terminals can be inserted into a single terminal.
• Do not wire the terminals that are not used.
• To avoid inductive noise, keep the wiring for the Digital Controller's terminal block away from power
cables that carry high voltages or large currents. Also, do not wire power lines together with or
parallel to Digital Controller wiring. Using shielded cables and using separate conduits or ducts are
recommended.
Attach a surge suppressor or noise filter to peripheral devices that generate noise (in particular,
motors, transformers, solenoids, magnetic coils or other equipment that have an inductance
component).
When a noise filter is used at the power supply, first check the voltage or current, and attach the noise
filter as close as possible to the Digital Controller.
Allow as much space as possible between the Digital Controller and devices that generate powerful
high frequencies (high-frequency welders, high-frequency sewing machines, etc.) or surge.
• Use this product within the rated load and power supply.
• Make sure that the rated voltage is attained within 2 seconds of turning ON the power using a switch
or relay contact. If the voltage is applied gradually, the power may not be reset or output malfunctions
may occur.
• Make sure that the Digital Controller has 30 minutes or more to warm up after turning ON the power
before starting actual control operations to ensure the correct temperature display.
• When executing self-tuning, turn ON power for the load (e.g., heater) at the same time as or before
supplying power to the Digital Controller. If power is turned ON for the Digital Controller before turning
ON power for the load, self-tuning will not be performed properly and optimum control will not be
achieved.

8 E5@C Digital Temperature Controllers Communications Manual (H175)

 Precautions for Safe Use

• A switch or circuit breaker must be provided close to the Digital Controller. The switch or circuit
breaker must be within easy reach of the operator, and must be marked as a disconnecting means for
the Digital Controller.
• Wipe off any dirt from the Digital Controller with a soft dry cloth. Never use thinners, benzine, alcohol,
or any cleaners that contain these or other organic solvents. Deformation or discoloration may occur.
• Design the system (e.g., control panel) considering the 2 seconds of delay in setting the Digital
Controller’s output after the power supply is turned ON.
• The output will turn OFF when you move to the initial setting level. Take this into consideration when
performing control.
• The number of non-volatile memory write operations is limited. Therefore, use RAM write mode when
frequently overwriting data, e.g., through communications.
• Use suitable tools when taking the Digital Controller apart for disposal. Sharp parts inside the Digital
Controller may cause injury.
• Do not connect cables to both the front-panel Setup Tool port and the top-panel Setup Tool port at the
same time. The Digital Controller may be damaged or may malfunction.
• Do not exceed the communications distance that is given in the specifications and use the specified
communications cable. Refer to the E5@C Digital Temperature Controllers User’s Manual (Cat. No.
H174) for the communications distance and cable specifications.
• Do not turn the power supply to the Digital Controller ON or OFF while the USB-Serial Conversion
Cable is connected. The Digital Controller may malfunction.

E5@C Digital Temperature Controllers Communications Manual (H175) 9

 Trademarks

Trademarks
• MELSEC and GX-Works are trademarks of the Mitsubishi Electric Corporation.
Other company names and product names in this document are the trademarks or registered trade-
marks of their respective companies.

10 E5@C Digital Temperature Controllers Communications Manual (H175)

 Versions

Versions
Check the version on the nameplate on the E5@C Controller or on the label on the packing box. If the
version is not given, the version of the E5@C Controller is version 1.0.

Product nameplate Package label

The version is given here.

The version is given here.

E5@C Digital Temperature Controllers Communications Manual (H175) 11

 Revision History

Revision History
A manual revision code appears as a suffix to the catalog number on the front cover of the manual.

Cat. No. H175-E1-05

Revision code

Revision code Date Revised content

01 December 2011 Original production
02 January 2012 Page 9: Made correction in Precautions for Safe Use.
03 May 2012 Added the following sections: Section 6 Programless
Communications and Section 7 Component Communications.
Page 10: Added trademark information.
Page 11: Added version information.
Page 13: Added functional upgrade information.
Pages 3-17 to 3-18: CompoWay/F variable area additions.
Corrected mistakes.
04 December 2012 Added Digital Controllers with position-proportional control.
05 March 2013 Page 13: Corrected maximum number of Controllers in four
locations and corrected last line.
Page 6-3: Corrected maximum number of Controllers in two
locations and corrected total number of words in middle of page.
Pages 6-7, 6-13, and 6-14: Corrected maximum number of
Controllers in table.
Page 7-2: Corrected maximum number of Controllers in figure.

12 E5@C Digital Temperature Controllers Communications Manual (H175)

 Functional Upgrades

Functional Upgrades Ver.1.1

Support for programless communications and component communications was added. The functional
upgrades that were made are described in this section.
Refer to Section 6 Programless Communications and Section 7 Component Communications in this
manual for details on the functional upgrades.

Programless Communications
With programless communications you can read and write E5@C parameters or start and stop the
E5@C from a Programmable Controller. Communications with the PLC are performed automatically by
the E5@C, so there is no need to program communications.
OMRON CS/CJ/CP-series PLC
or Mitsubishi Q/L-series PLC

E5@C
C C C C

25 25 25 25 Up to 32 Controllers
The E5@C automati- 0 0 0 0 can be connected.
cally reads and writes
PLC memory.
RS-485

Component Communications
You can use component communications to connect two or more E5@C Controllers via RS-485 and
then change the set points or RUN/STOP status for all of the Controllers at the same time.
The set point or RUN/STOP
status that is set in the master
is changed in all of the other Up to 32 Controllers can
C
RUN C C C
Controllers. 25 25 25 25 be connected (including
0 0 0 0 the master).
E5@C

RUN RUN RUN

Master Slaves

Copying Parameter Set Values

You can sequentially copy the parameter set values from the master to up to 31 slaves.
The parameters that are set
in the master are copied to
all of the slaves. C C C C Up to 32 Controllers
25
Parameters 25
Parameters 25
Parameters 25
Parameters can be connected
0 0 0 0 (including the master).
E5@C

Copy Copy Copy

Master Slaves

Identifying Controllers with the Functional Upgrades

The new functionality can be used with version 1.1 or higher. Refer to Versions for information on con-
firming the version.

E5@C Digital Temperature Controllers Communications Manual (H175) 13

 New Models

New Models Ver.2.0

E5EC/E5AC Digital Controllers with position-proportional control and E5AC Digital Controllers were
added.

Precautions for Correct Use

The CX-Thermo does not support the new functionality as of May 2012. To use the CX-Thermo,
first set other parameters from the CX-Thermo and then set the parameters for the new
functionality from the E5@C Controller. If the set values of the parameters are read from the
CX-Thermo after setting parameters for the new functions, the set value of the Protocol Setting
parameter will be initialized in the CX-Thermo. Also, if the set values of the parameters that were
previously read are written to the E5@C Controller, the initialized set value of the Protocol Setting
parameter will be written to Controller. As a result, the new functionality will be disabled.

14 E5@C Digital Temperature Controllers Communications Manual (H175)

 Sections in This Manual

Sections in This Manual

How This Manual is Organized

Descriptions in this manual are separated by the communications method.
Read the sections that are applicable to the system being used.
1

1 Communications Methods 2

3
2 CompoWay/F Communications Procedures

4
3 Communications Data for CompoWay/F

5
4 Modbus Communications Procedure
6

5 Communications Data for Modbus

7

6 Programless Communications Ver.1.1 A

7 Component Communications Ver.1.1 I

A Appendices

I Index

Related Manuals
For details on the functions of the E5@C Digital Controllers, refer to the E5@C Digital Temperature Con-
trollers User's Manual (Cat. No. H174).

E5@C Digital Temperature Controllers Communications Manual (H175) 15

CONTENTS
Preface ....................................................................................................................... 1

Read and Understand this Manual .......................................................................... 2

Safety Precautions .................................................................................................... 5

Definition of Precautionary Information ...................................................................................................... 5
Symbols ...................................................................................................................................................... 5

Precautions for Safe Use.......................................................................................... 8

Trademarks .............................................................................................................. 10

Versions ................................................................................................................... 11

Revision History ...................................................................................................... 12

Functional Upgrades............................................................................................... 13
Programless Communications .................................................................................................................. 13
Component Communications ................................................................................................................... 13
Copying Parameter Set Values ................................................................................................................. 13
Identifying Controllers with the Functional Upgrades ............................................................................... 13

New Models.............................................................................................................. 14

Sections in This Manual ......................................................................................... 15

How This Manual is Organized ................................................................................................................. 15
Related Manuals ....................................................................................................................................... 15

Section 1 Communications Methods

1-1 Overview of Communications Methods ................................................................................ 1-2
1-1-1 Introduction ................................................................................................................................. 1-2
1-1-2 Communications Specifications .................................................................................................. 1-2
1-1-3 Transmission Procedure.............................................................................................................. 1-3
1-1-4 Interface ...................................................................................................................................... 1-3
1-1-5 Wiring.......................................................................................................................................... 1-4
1-1-6 Communications Parameters ...................................................................................................... 1-5
1-1-7 Communications Parameter Setup ............................................................................................. 1-6
1-1-8 Description of Communications Parameters ............................................................................... 1-7

Section 2 CompoWay/F Communications Procedures

2-1 Data Format.............................................................................................................................. 2-2
2-1-1 Command Frame ........................................................................................................................ 2-2
2-1-2 BCC Calculation Example........................................................................................................... 2-3
2-1-3 Response Frame......................................................................................................................... 2-3
2-1-4 Communications Data................................................................................................................. 2-4
2-1-5 End Code Example ..................................................................................................................... 2-4
2-2 Structure of Command Text.................................................................................................... 2-6
2-2-1 PDU Structure............................................................................................................................. 2-6
2-2-2 Area Definitions........................................................................................................................... 2-6
2-2-3 Type Code (Variable Type) .......................................................................................................... 2-6
2-2-4 Addresses ................................................................................................................................... 2-7
2-2-5 Number of Elements ................................................................................................................... 2-7

16 E5@C Digital Temperature Controllers Communications Manual (H175)

 2-2-6 List of Services (Main Request Codes and Sub-Request Codes).............................................. 2-7
2-3 Detailed Description of the Services ..................................................................................... 2-8
2-3-1 Read Variable Area..................................................................................................................... 2-8
2-3-2 Write Variable Area..................................................................................................................... 2-9
2-3-3 Composite Read from Variable Area ........................................................................................ 2-10
2-3-4 Composite Write to Variable Area............................................................................................. 2-12
2-3-5 Read Controller Attributes ........................................................................................................ 2-13
2-3-6 Read Controller Status ............................................................................................................. 2-14
2-3-7 Echoback Test .......................................................................................................................... 2-15
2-3-8 Operation Command ................................................................................................................ 2-16
2-4 Response Code List .............................................................................................................. 2-21

Section 3 Communications Data for CompoWay/F

3-1 Variable Area (Setting Range) List ......................................................................................... 3-2
3-2 Status and Status 2 ............................................................................................................... 3-21

Section 4 Modbus Communications Procedure

4-1 Data Format.............................................................................................................................. 4-2
4-1-1 Command Frame ........................................................................................................................ 4-2
4-1-2 Response Frame ........................................................................................................................ 4-4
4-1-3 Error Codes ................................................................................................................................ 4-5
4-2 Function List ............................................................................................................................ 4-6
4-3 Variable Area ............................................................................................................................ 4-7
4-4 Detailed Description of the Functions ................................................................................... 4-8
4-4-1 Variable Read, Multiple............................................................................................................... 4-8
4-4-2 Variable Write, Multiple ............................................................................................................. 4-10
4-4-3 Variable Write, Single/Operation Command ............................................................................. 4-12
4-4-4 Echoback Test .......................................................................................................................... 4-15

Section 5 Communications Data for Modbus

5-1 Variable Area (Setting Range) List ......................................................................................... 5-2
5-2 Status...................................................................................................................................... 5-15

Section 6 Programless Communications

6-1 Programless Communications............................................................................................... 6-3
6-1-1 Introduction ................................................................................................................................. 6-3
6-1-2 Features...................................................................................................................................... 6-3
6-1-3 Operation for Programless Communications .............................................................................. 6-4
6-1-4 Timing of Turning Power ON and OFF........................................................................................ 6-4
6-1-5 Connectable PLCs...................................................................................................................... 6-5
6-2 E5@C Setup.............................................................................................................................. 6-6
6-2-1 Protocol Setting .......................................................................................................................... 6-6
6-2-2 Communications Unit No. and Communications Baud Rate ...................................................... 6-7
6-2-3 Send Data Wait Time.................................................................................................................. 6-7
6-2-4 Highest Communications Unit No. .............................................................................................. 6-7
6-2-5 Areas and First Address of Linked Data ..................................................................................... 6-8
6-2-6 Receive Data Wait Time ........................................................................................................... 6-10
6-2-7 Communications Node Number................................................................................................ 6-10
6-2-8 Upload Settings and Download Settings .................................................................................. 6-10
6-2-9 Copying Parameter Settings ..................................................................................................... 6-13

E5@C Digital Temperature Controllers Communications Manual (H175) 17

 6-2-10 Communications Writing ........................................................................................................... 6-15
6-2-11 Communications Monitor Parameter......................................................................................... 6-16
6-3 Controlling Programless Communications......................................................................... 6-17
6-3-1 Controlling Programless Communications with the Request Flag ............................................ 6-17
6-3-2 Response Flag .......................................................................................................................... 6-18
6-3-3 Range of Operation for Programless Communications............................................................. 6-19
6-3-4 Operation Command Codes ..................................................................................................... 6-19
6-3-5 Confirming Operation of Programless Communications ........................................................... 6-19
6-3-6 Write Mode................................................................................................................................ 6-20
6-3-7 Troubleshooting......................................................................................................................... 6-20
6-4 Connecting to CP-series PLCs............................................................................................. 6-21
6-4-1 Configuration and Procedure .................................................................................................... 6-21
6-4-2 Switch Settings and Wiring ....................................................................................................... 6-22
6-4-3 PLC Setup................................................................................................................................. 6-22
6-4-4 E5@C Controller Setup ............................................................................................................. 6-25
6-4-5 Checking Operation .................................................................................................................. 6-27
6-5 Connecting to CJ-series PLCs ............................................................................................. 6-32
6-5-1 Configuration and Procedure .................................................................................................... 6-32
6-5-2 Switch Settings and Wiring ....................................................................................................... 6-33
6-5-3 PLC Setup................................................................................................................................. 6-33
6-5-4 E5@C Controller Setup ............................................................................................................. 6-36
6-5-5 Checking Operation .................................................................................................................. 6-36
6-6 Connecting to MELSEC Q-series PLCs ............................................................................... 6-37
6-6-1 Configuration and Procedure .................................................................................................... 6-37
6-6-2 Wiring........................................................................................................................................ 6-38
6-6-3 PLC Setup................................................................................................................................. 6-38
6-6-4 E5@C Controller Setup ............................................................................................................. 6-43
6-6-5 Checking Operation .................................................................................................................. 6-44

Section 7 Component Communications

7-1 Component Communications................................................................................................. 7-2
7-1-1 Introduction ................................................................................................................................. 7-2
7-1-2 Wiring.......................................................................................................................................... 7-2
7-1-3 E5@C Setup................................................................................................................................ 7-3
7-2 Operation for Component Communications ......................................................................... 7-5
7-3 Troubleshooting....................................................................................................................... 7-6

Section A Appendices
A-1 ASCII List..................................................................................................................................A-2
A-2 Troubleshooting.......................................................................................................................A-3

Index

18 E5@C Digital Temperature Controllers Communications Manual (H175)

 1

Communications Methods
This section briefly describes the supported communications methods and how to wire
equipment. Refer to this section when setting up equipment.

1-1 Overview of Communications Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-1-2 Communications Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-1-3 Transmission Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-1-4 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-1-5 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1-1-6 Communications Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1-1-7 Communications Parameter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1-1-8 Description of Communications Parameters . . . . . . . . . . . . . . . . . . . . 1-7

E5@C Digital Temperature Controllers Communications Manual (H175) 1-1

1 Communications Methods

1-1 Overview of Communications

Methods

1-1-1 Introduction
The program for the communications functions is created on the host (personal computer, PLC, or other
type of communications master), and the E5@C's parameters are monitored or set from the host.
Therefore, the description provided here is from the viewpoint of the host.

CompoWay/F is OMRON's standard communications format for general serial communications. This
format uses a standard frame format as well as the well-established FINS* commands used for
OMRON's PLCs. Therefore, it can simplify communications between components and the host.
* FINS (Factory Interface Network service)
The FINS protocol provides message communications between controllers in OMRON FA networks.

Modbus is a standard communications control method that conforms to the Modicon Company's
RTU-mode Modbus Protocol (PI-MBUS-300 Revision J). Modbus is a registered trademark of
Schneider Electric.
It supports functions equivalent to the CompoWay/F Read Variable Area, Write Variable Area, Opera-
tion Command, and Echoback Test functions.

The E5@C supports the following communications functions.

• Reading/writing of parameters
• Operation instructions
• Selection of setup levels

Communications are subject to the following condition:

• Parameters can be written only when the Communications Writing parameter is set to ON (enabled).

1-1-2 Communications Specifications

Transmission line connection RS-485: Multidrop

Communications method RS-485 (2-wire, half-duplex)
Synchronization method Start-stop synchronization
Communications baud rate * 9,600, 19,200, 38,400 or 57,600 bps
Communications code ASCII
Communications data length * 7 or 8 bits
Communications stop bits * 1 or 2 bits
Vertical parity (none, even, or odd) *
BCC (Block Check Character) with CompoWay/F communications
Error detection
CRC-16 (Cyclic Redundancy Check 16) with Modbus
communications
Flow control None
Interface RS-485
Retry function None
Communications buffer 217 bytes
Send data wait time 0 to 99 ms, default time: 20 ms
* Communications baud rate, data length, stop bits and vertical parity can each be set independently in the
communications setting level. Highlighted values indicate default settings.

1-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 1 Communications Methods

1-1 Overview of Communica-

1-1-3 Transmission Procedure

tions Methods
When the host transmits a command frame, the E5@C transmits a response frame that corresponds to
the command frame. A single response frame is returned for each command frame. The following dia-
gram shows the operation of the command and response frames.

Command frame Command frame

Host
1
E5@C
Response frame

1-1-3 Transmission Procedure

Allow a wait time of at least 2 ms before the next command is sent after the host
receives a response from the E5@C.

1-1-4 Interface
Communications with the host are carried out through a standard RS-485 interface. Use a K3SC Inter-
face Converter for RS-485 interface conversion.

E5@C Digital Temperature Controllers Communications Manual (H175) 1-3

1 Communications Methods

1-1-5 Wiring
z RS-485
• The RS-485 connection can be either one-to-one or one-to-N. Up to 32 units including the host
can be connected in a one-to-N system.
• The total cable length is 500 m max.
• Use a shielded twisted-pair cable with a wire gauge of AWG24 to AWG18 (cross-sectional area of
0.205 to 0.823 mm2).

Communications
transceiver

Host
RS-485 E5@C TX
Abbreviation RS-485
FG Pin Abbreviation

− 14 A (−)
RX
+ 13 B (+)
SG

6.8 V

A < B: "1" Mark Shield

A > B: "0" Space Terminator E5@C
120 Ω End node
(1/2 W) RS-485
Pin Abbreviation

14 A (−)
Specify both ends of the transmission path including the host 13 B (+)
as the end node (that is, connect terminators to both ends).
Use a terminating resistance of at least 54 Ω.
Shield
Use a 120 Ω (1/2 W)
terminator.

Match the communications specifications of the E5@C and the host. When using a 1:N connection,
set the same communications specifications in all of the Units. Each Communications Unit must
have a unique unit number.
This section explains how to set the E5@C's communications specifications. For details on the host,
refer to the user's manual provided with the host.

1-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 1 Communications Methods

1-1 Overview of Communica-

1-1-6 Communications Parameters

tions Methods
The E5@C's communications specifications are set in the communications setting level. These parame-
ters are set on the E5@C's front panel. The following table shows the communications parameters and
their setting ranges.

Item Code Settings Set Values

Communications protocol CompoWay/F /Modbus cwf/mod
psel 1
setting
Communications unit number u-no 0 to 99 0, 1 to 99
Communications baud rate bps 9.6/19.2/38. 4/57.6 (kbit/s) 9.6/19.2 /38.4/57.6 (kbit/s)

1-1-6 Communications Parameters

Communications data length * len 7/8 (bit) 7/8 (bit)
Communications stop bits * sbit 1/2 1/2
Communications parity prty None, Even, Odd none/eVen/odd
Send data wait time sdwt 0 to 99 0 to 99 ms, default time: 20 ms
Highlighted values indicate default settings.
* When the Protocol Setting parameter is set to Modbus, the communications data length must be 8 bits, and the
communications stop bits must be 1 bit by setting the communications parity to Even/Odd or it must be 2 bits
by setting the parity to None. These two parameters are not displayed on the Controller's display.

E5@C Digital Temperature Controllers Communications Manual (H175) 1-5

1 Communications Methods

1-1-7 Communications Parameter Setup

Before you carry out communications with the E5@C, set up the communications unit number, baud
rate, and other parameters by carrying out the following procedure. For details on operations other than
communications parameter setup, refer to the E5@C Digital Temperature Controllers User's Manual
(Cat. No. H174) for the devices being used.
(1) Press the O Key for at least three seconds to move from the "operation level" to the
"initial setting level."
(2) Press the O Key for less than one second to move from the "initial setting level" to
the "communications setting level."
(3) Select the parameters as shown below by pressing the M Key.
(4) Use the D or U Keys to change the parameter set values.

Protocol Setting
psel
cwf
M
Communications Unit
u-no No.
1
M
Communications
bps Baud Rate
9.6
M
Communications Data
len Length *
7
M
Communications Stop
sbit Bits *
2
M
prty Communications
even Parity
M
Send Data Wait Time
sdwt
20
M
* Displayed only when the Protocol Setting parameter is set to CompoWay/F.

1-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 1 Communications Methods

1-1 Overview of Communica-

1-1-8 Description of Communications Parameters

tions Methods
When communications parameter settings have been changed, the new settings must be enabled by
resetting the Controller.

• Protocol Setting (psel)

The communications protocol can be selected. Set CompoWay/F or Modbus.
1
• Communications Unit No. (u-no)
This parameter is for setting a unique unit number for each of the Digital Controllers. This unit num-

1-1-8 Description of Communications Parameters

ber is set so that the host can identify the Digital Controller when communications are carried out
with the host. The unit number can be set to an integer value between 0 and 99. The default is “1.”
When two or more Digital Controllers are used, do not set the same unit number. Doing so will pre-
vent normal operation.

• Communications Baud Rate (bps)

This parameter is for setting the baud rate for communications with the host. The communications
baud rate settings are as follows: 9.6 (9600 bps), 19.2 (19200 bps), 38.4 (38400 bps) or 57.6 (57600
bps)

• Communications Data Length (len)

This parameter is for setting the number of communications data bits. Set either “7 bits” or “8 bits.”

• Communications Stop Bits (sbit)

This parameter is for setting the number of communications stop bits. Set either “1” or “2.”

• Communications Parity (prty)

This parameter is for setting the communications parity. Set the parity to “none,” “even,” or “odd.”

• Send Data Wait Time (sdwt)

The send data wait time is the delay from when the Controller receives a command from the host
computer until it returns a response. If the response is returned too quickly, the host computer may
not be able to receive the response. Change the send data wait time as required. To increase the
response speed for communications, reduce the send data wait time. The send data wait time can
be set in 1-ms increments between 0 and 99 ms. The default is 20 ms.

E5@C Digital Temperature Controllers Communications Manual (H175) 1-7

1 Communications Methods

1-8 E5@C Digital Temperature Controllers Communications Manual (H175)

 CompoWay/F Communications 2
Procedures
Read this section if you are to communicate using the CompoWay/F format.

2-1 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-1-1 Command Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-1-2 BCC Calculation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-1-3 Response Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-1-4 Communications Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-1-5 End Code Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-2 Structure of Command Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-2-1 PDU Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-2-2 Area Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-2-3 Type Code (Variable Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2-2-4 Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-2-5 Number of Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-2-6 List of Services (Main Request Codes and Sub-Request Codes) . . . . . . . . . . 2-7
2-3 Detailed Description of the Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-3-1 Read Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2-3-2 Write Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2-3-3 Composite Read from Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2-3-4 Composite Write to Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2-3-5 Read Controller Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2-3-6 Read Controller Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2-3-7 Echoback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2-3-8 Operation Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2-4 Response Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

E5@C Digital Temperature Controllers Communications Manual (H175) 2-1

2 CompoWay/F Communications Procedures

2-1 Data Format

Hexadecimal values are expressed by adding the prefix H' before the number, e.g., H'02. Numbers
shown without the H' prefix are ASCII characters.
The number underneath each item in a frame indicates the number of bytes.

2-1-1 Command Frame

Text
Node number Sub-address SID Command text BCC
STX 0 0 0 ETX
1 2 2 1 1 1
BCC calculation range

This code (H'02) indicates the beginning of the communications frame

(text).
STX Always set this character in the first byte.
When STX is received again during reception, reception is carried out
again from the point where STX was received.
• This number specifies the transmission's destination.
• Specify the E5@C's communications unit number.
• A BCD value between 00 and 99 or an ASCII value of XX can be set.
Node number • Specify “XX” for a broadcast transmission. No responses will be
returned for broadcast transmissions.
• No responses will be returned from node numbers other than the ones
in the above range.
Sub-address Always set the sub-address to “00.”
SID (Service ID) Always set the service ID to “0.”
This is the command text area. For details, refer to 2-2 Structure of
Command text
Command Text.
ETX This code (H'03) indicates the end of the text.
This is the Block Check Character.
BCC The BCC result is found by calculating the exclusive OR of the bytes from
the node number up to ETX.

2-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 2 CompoWay/F Communications Procedures

2-1-2 BCC Calculation Example

The BCC (Block Check Character) is determined by calculating the exclusive OR of the bytes from the
node number up to ETX. The 8-bit result is written to the BCC byte at the end of the frame.

2-1 Data Format

STX Node number Sub-address SID Command text ETX BCC

02H 0 (30H) 0 (30H) 0 (30H) 0 (30H) 0 (30H) 0 (30H) 5 (35H) 0 (30H) 3 (33H) 03H 35H

BCC = 30H+30H+30H+30H+30H+30H+35H+30H+33H+03H = 35H

The result of the calculation (35 hex) is written to the BCC byte. 2
The + symbols indicate XOR (exclusive OR) operations.

2-1-2 BCC Calculation Example

2-1-3 Response Frame
Node number Sub-address End code Command text BCC
STX 0 0 ETX
1 2 2 2 1 1

Error detection
End code Name Description
priority
00 Normal completion The command ended normally without error. None
FINS command error The specified FINS command could not be executed.
0F The FINS response code should indicate why the command 8
could not be executed.
Parity error The sum total of bits whose received data is “1” does not
10 2
match the set value of the "communications parity" bit.
11 Framing error Stop bit is “0.” 1
Overrun error An attempt was made to transfer new data when the
12 3
reception data buffer was already full.
BCC error The calculated BCC value is different from the received BCC
13 5
value.
Format error • The command text contains characters other than 0 to 9,
and A to F. This error does not apply to Echoback Tests.
(Refer to 2-3-7 Echoback Test for details.)
14 7
• There was no SID and command text. There was no
command text.
• “MRC/SRC” not included in command text.
Sub-address error • Illegal (unsupported) sub-address
• There was no sub-address, SID, and command text.
16 6
• Sub-address was less than two characters, and there was
no SID and command text
Frame length error The received frame exceeds the specified (supported)
18 4
number of bytes.
• An end code is returned for each command frame received that was addressed to the local node.
• No response will be returned unless the frame contained all elements up to the ETX and BCC.
• “Error Detection Priority” indicates the priority when two or more errors occur simultaneously.

E5@C Digital Temperature Controllers Communications Manual (H175) 2-3

2 CompoWay/F Communications Procedures

2-1-4 Communications Data

Communications Set (monitor)

Negative values Decimal point
format values
CompoWay/F 8-digit hexadecimal 2's complement Decimal point is removed and the result is
converted to hexadecimal.
Example conversion: 105.0 → 1050 →
H'0000041A

2-1-5 End Code Example

The following examples show the end code when a command did not end normally.

Example 1) Illegal Sub-address, No SID, and No Command Text

• Command
Node number Sub-address BCC
STX 0 A ETX

• Response

Node number Sub-address End code BCC

STX 0 A 1 6 ETX

End code is “16” (sub-address error).

The sub-address error code is used because the sub-address error has a higher error detection
priority than the format error.

Example 2) No Command Text

• Command
Node number Sub-address SID BCC
STX 0 0 0 ETX

• Response
Node number Sub-address End code BCC
STX 0 0 1 4 ETX

The end code is “14” (format error).

Example 3) No Node Number Provided

• Command
BCC
STX ETX

The node number is lacking one character.

• Response
There is no response.

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 2 CompoWay/F Communications Procedures

Example 4) No Sub-address and Illegal BCC

• Command

Node number BCC

2-1 Data Format

STX ETX Err

• Response
Node number Sub-address End code BCC
STX 0 0 1 3 ETX

2
The sub-address is “00” and the end code is “13” (BCC error).

2-1-5 End Code Example

E5@C Digital Temperature Controllers Communications Manual (H175) 2-5

2 CompoWay/F Communications Procedures

2-2 Structure of Command Text

2-2-1 PDU Structure

An MRC (Main Request Code) and SRC (Sub-Request Code) followed by the various required data is
transferred to the command text.
• Service Request PDU

MRC SRC Data

The MRES (Main Response Code) and SRES (Sub-Response Code) are transferred to the
response frame following the above MRC/SRC. Data is then transferred following the MRES and
SRES.

• Service Response PDU (Normal Response)

MRC SRC MRES SRES Data

If the specified command text could not be executed, the service response PDU will contain only the
MRC/SRC and MRES/SRES.

• Service Response PDU (Command Text Not Executed)

MRC SRC MRES SRES

MRES/SRES provides the response code. MRES/SRES are not output when processing ends in a
normal completion.

2-2-2 Area Definitions

Areas comprise only the variable area.

2-2-3 Type Code (Variable Type)

The following figure shows the variable area type code.

Variable type (1 byte)

MSB LSB
0 0 0 0

Read/Write
Area 0: Read only
Access size 0: Setup area 0
11: Double word 1: Read/Write
1: Setup area 1
10: Word

The following table summarizes setup areas 0 and 1.

Area Description
Setup area 0 This area groups together the protect, manual control, operation, and adjustment
levels.
Setup area 1 This area groups together the initial setting, communications setting, advanced
function setting, and calibration levels.
The type code depends on the parameter. Refer to 3-1 Variable Area (Setting Range) List for details.

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 2 CompoWay/F Communications Procedures

2-2 Structure of Command Text

The variable type is converted to 2-byte ASCII and loaded to the frame. The following table shows the
available variable types.

Variable type Description

C0/80 R/O (read only) parameter for setup area 0.
C1/81 R/W parameter for setup area 0.
C3/83 R/W parameter for setup area 1.
Note: Setup area 1 has no read-only parameters, so there is no variable type "C2."

2-2-4 Addresses
2
An address is appended to each of the variable types. Express addresses in 2-byte hexadecimal and
append them for the specified access size. The address depends on the parameter. Refer to 3-1 Vari-

2-2-4 Addresses
able Area (Setting Range) List for details.

2-2-5 Number of Elements

The number of elements is expressed in 2-byte hexadecimal. The range that can be specified for the
number of elements depends on the command. Refer to 2-3 Detailed Description of the Services for
details.

2-2-6 List of Services (Main Request Codes and Sub-Request Codes)

MRC SRC Name of service Processing

01 01 Read Variable Area This service reads from the variable
area.
01 02 Write Variable Area This service writes to the variable area.
01 04 Composite Read from Variable Area This service reads from the variable area
in the order specified by the parameters.
01 13 Composite Write to Variable Area This service writes to the variable area in
the order specified by the parameters.
05 03 Read Controller Attributes This service reads the model number
and communications buffer size.
06 01 Read Controller Status This service reads the operating status.
08 01 Echoback Test This service performs an echoback test.
30 05 Operation Command This service performs operations such
as RUN/STOP, executing/stopping AT
(auto-tuning), and moving to Setup Area
1.
Note: No commands will be accepted and no responses will be returned when a memory error (RAM error) has
occurred or the Controller is initializing (until the Controller recognizes the process value after the power is
turned ON).

E5@C Digital Temperature Controllers Communications Manual (H175) 2-7

2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

2-3-1 Read Variable Area

This service reads data from the variable area.
• Service Request PDU

MRC SRC Variable Read start Bit Number of

type address position
elements
0 1 0 1 0 0
2 2 2 4 2 4
• Service Request PDU

MRC SRC Response Read data (for number

code of elements)
0 1 0 1
2 2 4 Number of elements
× 8 or 4

(1) Variable Type and Read Start Address

For details on variable types and read start addresses, refer to Section 3 Communications Data for
CompoWay/F.

(2) Bit Position

Bit access is not supported. Fixed to “00.”

(3) Number of Elements

Number of elements Processing

The read operation is not performed (read data is not
0000 appended to the service response PDU), and processing
ends in a normal completion.
Double word 0001 to 0019 The read operation is performed and processing ends in a
(variable type C0, C1, or C3) (1 to 25) normal completion.
Word 0001 to 0032
(variable type 80, 81, or 83) (1 to 50)

(4) Response Code

• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

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 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

• Error Occurred

Response code Error name Cause

1001 Command too long The command is too long.
1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
Start address out-of-range error The read start address is out of
1103
range.
Response too long The number of elements exceeds
110B
the maximum.
1100 Parameter error Bit position is not “00.”
2203 Operation error Non-volatile memory error
2
(5) Precautions
• Alarm Function

2-3-2 Write Variable Area

Even though alarms are not displayed on the Controller's display, they function normally in
communications.

2-3-2 Write Variable Area

This service writes data to the variable area.
• Service Request PD

Variable Start write Bit Number of Write Data (for number

MRC SRC
type address position elements of elements)
0 1 0 2 0 0
2 2 2 4 2 4 Number of elements
× 8 or 4
• Service Response PDU

MRC SRC Response

code
0 1 0 2
2 2 4

(1) Variable Type and Write Start Address

For details on variable types and write start addresses, refer to Section 3 Communications Data for
CompoWay/F.

(2) Bit Position

Bit access is not supported. Fixed to “00.”

(3) Number of Elements

Number of elements Processing

The write operation is not performed (do not append write
0000 data to the service request PDU) and processing ends in a
normal completion.
Double word 0001 to 0018 The write operation is performed and processing ends in a
(variable type C0, C1, or C3) (1 to 24) normal completion.
Word 0001 to 0030
(variable type 80, 81, or 83) (1 to 48)

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2 CompoWay/F Communications Procedures

(4) Response Code

• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Cause

1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
1103 Start address out-of-range error Write start address is out of range.
End address out-of-range error The write end address (write start address +
1104 number of elements) exceeds the final address of
the variable area.
Number of elements/data The number of data does not match the number of
1003
mismatch elements.
Parameter error • Bit position is not “00.”
1100
• The write data is out of the setting range.
3003 Read-only error Variable type “C0” was written to.
Operation error • The Communications Writing parameter is set to
“OFF” (disabled).
• Attempted to write to a parameter in setup area
1 from setup area 0.
2203
• Attempted to write to a protect parameter from
other than the protect level.
• AT (auto-tuning) was in progress. *
• Non-volatile memory error
* For details on AT (auto-tuning), refer to the E5@C Digital Temperature Controllers User's Manual (Cat. No.
H174).

(5) Precautions
• Alarm Function
Even though alarms are not displayed on the Controller's display, they function normally in
communications.

2-3-3 Composite Read from Variable Area

This service reads in order the contents of specified addresses in the variable area.
• Service Request PDU

MRC SRC Variable Read Bit Variable Read Bit

type address position type address position
0 1 0 4 0 0 0 0
2 2 2 4 2 2 4 2
• Service Response PDU

MRC SRC Response Variable Read data

code type
0 1 0 4
2 2 4 2 Number of elements ×8 or 4

Variable Read data

type

2 Number of elements ×8 or 4
Note: The read data is read together with the variable type in the order specified by the command.

2 - 10 E5@C Digital Temperature Controllers Communications Manual (H175)

 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

(1) Variable Type and Read Start Address
For details on variable types and read start addresses, refer to Section 3 Communications Data for
CompoWay/F.

(2) Bit Position

Bit access is not supported. Fixed to “00.”

(3) Number of Read Data Items (Variable Type + Read Data + Bit Position Counted As 1 Item)

Read data length Number of read data items

For double word (variable type C0, C1, or C3) 20 max.
For word (variable type 80, 81, or 83) 25 max. 2
Note: The following table gives the maximum number of read data items when double-word data and word data are
used together.

2-3-3 Composite Read from Variable Area

Composite Read Composite Read
Double word Word Double word Word
(variable type C0, (variable type 80, (variable type C0, (variable type 80,
C1, or C3) 81, or 83) C1, or C3) 81, or 83)
20 0 11 14
19 1 10 15
18 2 9 16
18 3 8 17
17 4 7 18
17 5 6 19
16 6 8 20
15 7 4 21
15 8 3 22
14 9 2 23
14 10 1 24
13 11 0 25
12 12
12 13

(4) Response Code

• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Cause

1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
Response too long The number of elements exceeds
110B
the maximum.
1100 Parameter error Bit position is not "00."
2203 Operation error Non-volatile memory error

E5@C Digital Temperature Controllers Communications Manual (H175) 2 - 11

2 CompoWay/F Communications Procedures

2-3-4 Composite Write to Variable Area

This service writes in order the contents of specified addresses to a variable area.
• Service Request PDU

MRC SRC Variable Write Bit Write data

type address position
0 1 1 3 0 0
2 2 2 4 2 Number of elements ×8 or 4

Variable Write Bit Write data

type address position
0 0
2 4 2 Number of elements ×8 or 4
• Service Response PDU

MRC SRC Response

code
0 1 1 3
2 2 4

(1) Variable Type and Write Start Address

For details on variable types and write start addresses, refer to Section 3 Communications Data for
CompoWay/F.

(2) Bit Position

Bit access is not supported. Fixed to “00.”

(3) Number of Write Data Items (Variable Type + Write Address + Bit Position + Write Data
Counted As 1 Item)

Write data length Number of write data items

For double word (variable type C0, C1, or C3) 12 max.
For word (variable type 80, 81, or 83) 17 max.
Note: The following table gives the maximum number of write data items when double-word data and word data
are used together.

Composite Write Composite Write

Double word Word Double word Word
(variable type C0, (variable type 80, (variable type C0, (variable type 80,
C1, or C3) 81, or 83 ) C1, or C3) 81, or 83)
12 0 5 10
12 1 4 11
11 2 3 12
10 3 3 13
9 4 2 14
9 5 1 15
8 6 0 16
7 7 0 17
6 8
6 9

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 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

(4) Response Code
• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Cause

1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
Parameter error • Bit position is not “00.”
1100
• The write data is out of the setting range. 2
3003 Read-only error Variable type “C0” was written to.
Operation error • The Communications Writing parameter is set to “OFF”

2-3-5 Read Controller Attributes

(disabled).
• Attempted to write to a parameter in setup area 1 from
setup area 0.
2203
• Attempted to write to a protect parameter from other
than the protect level.
• AT (auto-tuning) was in progress. *
• Non-volatile memory error
* For details on AT (auto-tuning), refer to the E5@C Digital Temperature Controllers User's Manual (Cat. No.
H174).

2-3-5 Read Controller Attributes

This service reads the model number and communications buffer size.
• Service Request PDU

MRC SRC

0 5 0 3
2 2
• Service Response PDU

MRC SRC Response Model No. Buffer size

code
0 5 0 3 0 0 D 9
2 2 4 10 4

(1) Model Number

The model number is expressed in 10-byte ASCII.
Example: The model is given as shown below for the E5CC-RX2ASM-000
(relay output, 2 auxiliary outputs, and no options).

E 5 C C - R X 2 A S

(2) Buffer Size

The communications buffer size is expressed in 2-byte hexadecimal, and read after being converted
to 4-byte ASCII.
Buffer size: 217 bytes (= H'00D9)

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2 CompoWay/F Communications Procedures

(3) Response Code

• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Description

1001 Command too long The command is too long.
2203 Operation error Non-volatile memory error

2-3-6 Read Controller Status

This service reads the operating status and error status.
• Service Request PDU

MRC SRC

0 6 0 1
2 2
• Service Response PDU

MRC SRC Response Operating Related

code informa-
status
tion
0 6 0 1
2 2 4 2 2

(1) Operating Status

Operating status Description

Control is being carried out (error has not occurred in setup area 0 and the Controller is
00
running).
01 Control is not being carried out (state other than above).

(2) Related Information

7 6 5 4 3 2 1 0 Bit position
0
Heater overcurrent (CT1)
Heater current hold (CT1)
AD converter error
Heater overcurrent (CT2)
Heater current hold (CT2)

Input error
Potentiometer input error

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 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

(3) Response Code
• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Description

1001 Command too long The command is too long.
2203 Operation error Non-volatile memory error

2
2-3-7 Echoback Test

2-3-7 Echoback Test

This service performs an echoback test.
• Service Request PDU

MRC SRC Test data

0 8 0 1
2 2 0 to 200
• Service Response PDU

MRC SRC Response Test data

code
0 8 0 1
2 2 4 0 to 200

(1) Test Data

Set between 0 and 200 bytes of user-defined test data.
Set a value for the test data within the ranges shown below according to the communications data
length.

Communications
Test Data
data length
8 bits ASCII data: H'20 to H'7E or H'A1 to H'FE
7 bits ASCII data: H'20 to H'7E

(2) Response Code

• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Description

1001 Command too long The command is too long.
2203 Operation error Non-volatile memory error

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2 CompoWay/F Communications Procedures

2-3-8 Operation Command

• Communications Writing • RUN/STOP • Multi-SP

• AT Execute/Cancel • Write Mode • Save RAM Data
• Software Reset • Move to Setup Area 1 • Move to Protect Level
• Auto/Manual Switch • Parameter Initialization • Alarm Latch Cancel
• Invert Direct/Reverse • Program Start • SP Mode
Operation

• Service Request PDU

Com- Related
MRC SRC mand informa-
code tion
3 0 0 5
2 2 2 2

• Service Response PDU

MRC SRC Response

code
3 0 0 5
2 2 4

(1) Command Code and Related Information

Command code Command content Related Information

Communications Writing 00: OFF (disabled)
00
01: ON (enabled)
RUN/STOP 00: Run
01
01: Stop
Multi-SP 00: Set point 0
01: Set point 1
02: Set point 2
03: Set point 3
02
04: Set point 4
05: Set point 5
06: Set point 6
07: Set point 7
AT Execute/Cancel 00: AT cancel
03 01: 100% AT execute
02: 40% AT execute
Write Mode 00: Backup
04
01: RAM write mode
05 Save RAM Data 00
06 Software Reset 00
07 Move to Setup Area 1 00
08 Move to Protect Level 00
Auto/Manual Switch 00: Automatic mode
09
01: Manual mode
0B Parameter Initialization 00

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 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

Command code Command content Related Information
Alarm Latch Cancel 00: Alarm 1 latch cancel
01: Alarm 2 latch cancel
02: Alarm 3 latch cancel
0C 03: HB alarm latch cancel
04: HS alarm latch cancel
05: Alarm 4 latch cancel
0F: All alarm latch cancel
SP Mode 00: Local SP mode
0D
01: Remote SP mode
Invert Direct/Reverse Operation 00: Not invert
0E
01: Invert

11
Program Start 00: Reset 2
01: Start

2-3-8 Operation Command

(2) Response Code
• Normal Completion

Response code Name Description

0000 Normal completion No errors were found.

• Error Occurred

Response code Error name Description

1001 Command too long The command is too long.
1002 Command too short The command is too short.
Parameter error Command code and related
1100
information are wrong.
Operation error • The Communications Writing
parameter is set to "OFF"
(disabled). The command is
received regardless of the
Communications Writing
2203 parameter setting (ON/OFF).
• Processing could not be
performed. For details, refer to
(3) Operation Commands and
Precautions below.
• Non-volatile memory error

(3) Operation Commands and Precautions

• Communications Writing
Set the Communications Writing parameter to "ON: enabled" or "OFF: disabled" with the related
information setting. The setting can be accepted in both setup area 0 and setup area 1. An
operation error will occur, however, if enabling or disabling communications writing is set for an
event input.

• RUN/STOP
Set control to “run” or “stop” with the related information setting. The setting can be accepted in
both setup area 0 and setup area 1. An operation error will occur, however, if RUN/STOP is set for
an event input.

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2 CompoWay/F Communications Procedures

• Multi-SP
Set eight set points beforehand in the adjustment level so that you can switch to a desired set
point. The setting can be accepted in both setup area 0 and setup area 1. An operation error will
occur in the following situations.
• When AT is being executed.
• When the Number of Multi-SP Points parameter is set to OFF.
• When the Number of Multi-SP Points parameter is not set to OFF, but Multi-SP No. Switch is
set for an event input.

• AT Execute/Cancel
Set AT (auto-tuning) to “execute” or “cancel” with the related information setting. This command
can be accepted in setup area 0 only. An “operation error” will be generated in the following
instances:
• When the RUN/STOP parameter is set to “stop”
• When the command is executed in “setup area 1”
• When ON/OFF control is being used
• When 40% AT is specified during 100% AT execution.
• When 100% AT is specified during 40% AT execution.
A parameter error will occur if 40% AT is specified during heating and cooling control or floating
position-proportional control.
Note: If the same type of AT execution is specified during AT execution (e.g., if 100% AT is specified during
100% AT execution), the AT will not be restarted and the operation will end in normal completion with
no processing.

• Write Mode
Set either the backup mode or RAM write mode with the related information setting. The setting
can be accepted in both setup area 0 and setup area 1.
The number of non-volatile memory write operations is limited. Therefore, use RAM write mode
when frequently overwriting data.

Write mode Description

Backup mode The data is written to non-volatile memory when the parameters in the
operation/adjustment levels (excluding read-only parameters) are written
by communications.
RAM write mode The data is not written to non-volatile memory when the parameters in the
operation/adjustment levels (excluding read-only parameters) are written
by communications. Parameters can be changed by operating the keys
on the front panel of the Controller.
• When the mode is switched from RAM write mode to backup mode, the parameters in the
operation/adjustment levels (excluding read-only parameters) are written to non-volatile
memory.
• The RAM write mode is enabled only when the Communications Writing parameter is set to
“ON” (enabled).
Consequently, when the Communications Writing parameter setting is changed to "OFF"
(disabled), the parameters in the operation/adjustment levels (excluding read-only
parameters) are written to non-volatile memory even if the mode is set to RAM write mode.

• Save RAM Data

This command writes the parameters in the operation/adjustment levels (excluding read-only
parameters) to non-volatile memory. The setting can be accepted in both setup area 0 and setup
area 1.

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 2 CompoWay/F Communications Procedures

2-3 Detailed Description of the Services

• Software Reset
Restarts processing from the point when power is turned ON. The setting can be accepted in both
setup area 0 and setup area 1.

• Move to Setup Area 1

This command moves to “setup area 1” and can be accepted at both setup areas 0 and 1. If the
“initial setting/communications protect” is set to “2,” an “operation error” will be generated, and the
move to setup area 1 will be prohibited.
When this move is carried out from setup area 0, the display indicates the Input Type parameter in
the “initial setting level.” When this operation command is executed in setup area 1, the display will
not change.
2
• Move to Protect Level
This command moves to the "protect level" and can be accepted only in setup area 0. When this

2-3-8 Operation Command

command is issued in setup area 1, an "operation error" will be generated, and the move to the
protect level will be prohibited.

• Moving to Protect Level in Manual Mode

When this operation command is issued in manual mode, an “operation error” will be
generated, and the move to the protect level will be prohibited.

• Auto/Manual Switch
This operation command switches the mode to manual mode or automatic mode, based on the
related information setting. This command can be accepted in setup area 0 only. An “operation
error” will be generated in the following instances:
• When the command is executed in “setup area 1”
When the Controller is switched to manual mode, the “manual manipulated variable” will be
displayed. When the Controller is switched from manual mode to automatic mode, the
operation level's first parameter will be displayed. When the Controller is switched to auto
mode while already in auto mode or switched to manual mode while already in manual mode,
the command will be completed normally and the display will not change (the contents will not
be refreshed).

• Writing Auto/Manual Status in Non-volatile memory

The write mode determines whether the auto/manual status is written to non-volatile memory.

Write mode Description

Backup mode When the auto/manual mode is switched by communications, the
auto/manual status is written to non-volatile memory.
RAM write mode When the auto/manual mode is switched by communications, the
auto/manual status is not written to non-volatile memory.
The status can be written with the Controller key operation.
Note: When the auto/manual mode is switched with an operation command through communications
and the Controller is in RAM write mode, the auto/manual status is not stored in non-volatile
memory. Consequently, if the Controller is restarted by performing a software reset or turning the
power OFF and ON again, the auto/manual mode is set to the last saved status.

• Switching to Manual Mode during Auto-tuning

If the mode is switched during auto-tuning (AT), the AT will be cancelled and the Controller will
be switched to manual mode.

• Parameter Initialization
The present settings are returned to the default values and written to non-volatile memory. This
command can be accepted in setup area 1 only. When this command is issued in setup area 0, an

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2 CompoWay/F Communications Procedures

“operation error” will be generated. (These settings are the same as the ones used when “FACT”
is selected for the setting data's set value initialization.)

• Alarm Latch Cancel

The applicable alarm latch can be cleared with the related information setting. The setting can be
accepted in both setup area 0 and setup area 1. An operation error will occur if communications
writing is disabled or if an non-volatile memory error occurs.

• Invert Direct/Reverse Operation

Inverting or not inverting direct/reverse operation can be selected with the related information
setting. The setting can be accepted in both setup area 0 and setup area 1. The related
information specifications are written to non-volatile memory according to the write mode settings.
An operation error will occur in the following situations:
• When AT is being executed.
• When inverting direct/reverse operation is set for an event input.
• When executed in manual mode.

• Program Start
The simple program function can be reset/started with the related information setting. The setting
can be accepted in both setup area 0 and setup area 1. An operation error will be generated if
program start has been set in the event input.

• Setting Areas
Control operation is executed in setting area 0. In this state, you can perform operations that are
permitted only during control or those that cause no problems even if control is in progress. These
operations include reading PVs, writing SPs, and changing RUN/STOP status.
Setting area 0, however, prohibits operations that affect control, including writing data at the initial
setting level. (Reading setting data is always allowed.)
In setting area 1, control operation is stopped. In this state, you can perform operations that are
not allowed in setting area 0. These operations include writing data at the initial setting level.
At power-ON, the Digital Controller is set in setting area 0. To move to setting area 1, use the
"move-to-setting area 1" command. To return to setting area 0, turn the power OFF and ON again,
or use the "software reset" command.

Power ON
Software reset command

Setting area 0 “Move-to-setting Setting area 1

area 1” command

Control in progress Control stopped.

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 2 CompoWay/F Communications Procedures

2-4 Response Code List

2-4 Response Code List

Normal Completion

Error detection
Response code Name Description
priority
0000 Normal completion No errors were found. None

Error Occurred

Error 2
Response code Name Description detection
priority
Unsupported command The service function for the relevant
0401 1
command is not supported.
1001 Command too long The command is too long. 2
1002 Command too short The command is too short. 3
1101 Area type error Wrong variable type 4
Start address out-of-range The read/write start address is out of range.
1103 5
error
End address out-of-range The write end address (write start address +
1104 error number of elements) exceeds the final 6
address of the variable area.
Number of elements/data The amount of data does not match the
1003 7
mismatch number of elements.
Response too long The response length exceeds the
communications buffer size (when the number
110B 8
of elements is greater than the maximum
number of elements for that service).
Parameter error • Bit position is not “00.”
• The write data is out of the setting range.
1100 9
• The command code or related information
in the operation command is wrong.
3003 Read-only error Variable type “C0” was written to. 10
Operation error • The Communications Writing parameter is
set to “OFF” (disabled).
• Attempted to write to a parameter in setup
area 1 from setup area 0.
• Attempted to write to a protect parameter
2203 from other than the protect level. 11
• Writing was carried out during AT
execution.
• Processing is not possible by operation
command.
• Non-volatile memory error

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2 CompoWay/F Communications Procedures

2 - 22 E5@C Digital Temperature Controllers Communications Manual (H175)

 Communications Data for
CompoWay/F
3
This section lists the details of the communications data in the CompoWay/F
communications protocol.

3-1 Variable Area (Setting Range) List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-2 Status and Status 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

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3 Communications Data for CompoWay/F

3-1 Variable Area (Setting Range) List

• For communications using a variable type not enclosed in parentheses in the following table, the set
value is double-word data (8 digits). For communications using a variable type enclosed in
parentheses, the set value is single-word data (4 digits).
• For example, variable type C0 is double-word data (8 digits), and variable type 80 is single-word data
(4 digits).
• Items expressed in hexadecimal in the "Setting (monitor) value" column are the setting range for
CompoWay/F communications. The values in parentheses are the actual setting range. When there
is a section reference for a setting item, refer to that reference for details.

Variable
Address Parameter name Setting (monitor) value Level
type
C0 (80) 0000 PV Temperature: Use the specified range for each sensor. Operation
Analog: Scaling lower limit −5% FS to Scaling
upper limit +5% FS
C0 (80) 0001 Status *1*2 Refer to 3-2 Status and Status 2 for details.
C0 (80) 0002 Internal Set Point *1 SP lower limit to SP upper limit
C0 (80) 0003 Heater Current 1 H'00000000 to H'00000226 (0.0 to 55.0)
Value Monitor
C0 (80) 0004 MV Monitor Standard: H'FFFFFFCE to H'0000041A
(Heating) (−5.0 to 105.0)
Heating and cooling: H'00000000 to H'0000041A
(0.0 to 105.0)
C0 (80) 0005 MV Monitor H'00000000 to H'0000041A (0.0 to 105.0)
(Cooling)
C0 (80) 0006 Heater Current 2 H'00000000 to H'00000226 (0.0 to 55.0)
Value Monitor
C0 (80) 0007 Leakage Current 1 H'00000000 to H'00000226 (0.0 to 55.0)
Monitor
C0 (80) 0008 Leakage Current 2 H'00000000 to H'00000226 (0.0 to 55.0)
Monitor
C0 (80) 0009 Soak Time Remain H'00000000 to H'0000270F (0 to 9999)
C0 (80) 000A Valve Opening H'FFFFFF9C to H'0000044C (−10.0 to 110.0)
Monitor
C0 (80) 000B Remote SP Monitor Remote SP lower limit −10%FS to Remote SP upper
limit +10%FS
C0 (80) 000C Multi-SP No. H'00000000 to H'00000007 (0 to 7)
Monitor
C0 (80) 000E Decimal Point H'00000000 to H'00000003 (0 to 3)
Monitor *1
C0 (80) 0011 Status 2 *1*2 Refer to 3-2 Status and Status 2.
C0 (80) 0012 Status *1*3 Refer to 3-2 Status and Status 2.
C0 (80) 0013 Status 2 *1*3 Refer to 3-2 Status and Status 2.
*1 Not displayed on the Controller display.
*2 When the variable type is 80 (word access), the rightmost 16 bits are read.
*3 When the variable type is 80 (word access), the leftmost 16 bits are read.

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 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C1 (81) 0000 Operation/Adjustm H'00000000 (0): No restrictions in operation and Protect
ent Protect adjustment levels
H'00000001 (1): Move to adjustment level is
prohibited.
H'00000002 (2): Display and change of only "PV"
and "PV/SP" parameters is allowed.
H'00000003 (3): Display of only "PV" and "PV/SP"
parameters is allowed.
C1 (81) 0001 Initial H'00000000 (0): Move to initial
Setting/Communic setting/communications setting
ations Protect level is allowed. (Move to advanced
function setting level is displayed.)
H'00000001 (1): Move to initial
setting/communications setting
level is allowed. (Move to advanced
3
function setting level is not
displayed.)
H'00000002 (2): Move to initial
setting/communications setting
level is prohibited.
C1 (81) 0002 Setting Change H'00000000 (0): OFF (Changing of setup on
Protect Controller display is allowed.)
H'00000001 (1): ON (Changing of setup on
Controller display is prohibited.)
C1 (81) 0003 Set Point SP lower limit to SP upper limit Operation
C1 (81) 0004 Alarm Value 1 H'FFFFF831 to H'0000270F (−1999 to 9999)
C1 (81) 0005 Alarm Value Upper H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 1
C1 (81) 0006 Alarm Value Lower H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 1
C1 (81) 0007 Alarm Value 2 H'FFFFF831 to H'0000270F (−1999 to 9999)
C1 (81) 0008 Alarm Value Upper H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 2
C1 (81) 0009 Alarm Value Lower H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 2
C1 (81) 000A Alarm Value 3 H'FFFFF831 to H'0000270F (−1999 to 9999)
C1 (81) 000B Alarm Value Upper H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 3
C1 (81) 000C Alarm Value Lower H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 3
C1 (81) 000D Heater Burnout H'00000000 to H'000001F4 (0.0 to 50.0) Adjustment
Detection 1
C1 (81) 000E SP 0 SP lower limit to SP upper limit
C1 (81) 000F SP 1 SP lower limit to SP upper limit
C1 (81) 0010 SP 2 SP lower limit to SP upper limit
C1 (81) 0011 SP 3 SP lower limit to SP upper limit
C1 (81) 0012 Process Value H'FFFFF831 to H'0000270F (−1999 to 9999)
Input Shift
C1 (81) 0013 Process Value H'00000001 to H'0000270F (0.001 to 9.999)
Slope Coefficient
C1 (81) 0015 Proportional Band H'0000001 to H'0000270F (0.1 to 999.9)
Note: The alarm function can also be used in Digital Controllers without auxiliary output terminals. In this case,
confirm alarm occurrences via the status data.

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3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C1 (81) 0016 Integral Time Standard, heating/cooling, or close Adjustment
position-proportional control:
H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
Floating position-proportional control:
H'00000001 to H'0000270F
(1 to 9999: Integral/derivative time unit is 1 s.)
(0.1 to 999.9: Integral/derivative time unit is 0.1 s.)
C1 (81) 0017 Derivative Time H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
C1 (81) 0019 Dead Band H'FFFFF831 to H'0000270F
(−199.9 to 999.9 for temperature input)
(−19.99 to 99.99 for analog input)
C1 (81) 001A Manual Reset H'00000000 to H'000003E8 (0.0 to 100.0)
Value
C1 (81) 001B Hysteresis H'00000001 to H'0000270F
(Heating) (0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
C1 (81) 001C Hysteresis H'00000001 to H'0000270F
(Cooling) (0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
C1 (81) 001D Heater Burnout H'00000000 to H'000001F4 (0.0 to 50.0)
Detection 2
C1 (81) 001E HS Alarm 1 H'00000000 to H'000001F4 (0.0 to 50.0)
C1 (81) 001F HS Alarm 2 H'00000000 to H'000001F4 (0.0 to 50.0)
C1 (81) 0020 Soak Time H'00000001 to H'0000270F (1 to 9999)
C1 (81) 0021 Wait Band H'00000000 (0): OFF
H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
C1 (81) 0022 MV at Stop Standard Models
C1 (81) 0023 MV at PV Error Standard control:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control:
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
Position-proportional Models
Close position-proportional control with the Direct
Setting of Position Proportional MV parameter set to
ON:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Floating position-proportional control or the Direct
Setting of Position Proportional MV parameter set to
OFF:
(Not valid for manual MV.)
H'FFFFFFFF to H'00000001 (−1 to 1)

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 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C1 (81) 0024 Manual MV Standard Models Manual
Standard control: Control
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control:
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
Position-proportional Models
Close position-proportional control with the Direct
Setting of Position Proportional MV parameter set
to ON:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
C1 (81) 0025 SP Ramp Set H'00000000 (0): OFF Adjustment
Value H'00000001 to H'0000270F (1 to 9999)
C1 (81) 0026 MV Upper Limit Standard control or close position-proportional control:
MV lower limit + 0.1 to H'0000041A
(MV lower limit + 0.1 to 105.0)
3
Heating and cooling control:
H'00000000 to H'0000041A (0.0 to 105.0)
C1 (81) 0027 MV Lower Limit Standard control or close position-proportional control:
H'FFFFFFCE to MV upper limit − 0.1
(−5.0 to MV upper limit − 0.1)
Heating and cooling control:
H'FFFFFBE6 to H'00000000 (−105.0 to 0.0)
C1 (81) 0028 Move to Protect H'FFFFF831 to H'0000270F (-−1999 to 9999) Protect
Level
C1 (81) 0029 Password to Move H'FFFFF831 to H'0000270F (−1999 to 9999)
to Protect Level (Can only be set. The monitor value is always
H'00000000.)
C1 (81) 002A Parameter Mask H'00000000 (0): OFF
Enable H'00000001 (1): ON
C1 (81) 002B PF Key Protect H'00000000 (0): OFF
H'00000001 (1): ON

E5@C Digital Temperature Controllers Communications Manual (H175) 3-5

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C1 (81) 002C MV Change Rate H'00000000 to H'000003E8 (0.0 to 100.0) Adjustment
Limit
C1 (81) 002D Position H'00000001 to H'00000064 (0.1 to 10.0)
Proportional Dead
Band
C1 (81) 002E Open/Close H'00000001 to H'000000C8 (0.1 to 20.0)
Hysteresis
C1 (81) 002F Remote SP Input H'FFFFF831 to H'0000270F (−1999 to 9999)
Shift
C1 (81) 0030 Remote SP Slope H'00000001 to H'0000270F (0.001 to 9.999)
Input Coefficient
C1 (81) 0031 Extraction of H'00000000 to H'000003E8 (0.0 to 100.0)
Square Root
Low-cut Point
C1 (81) 0032 Alarm Value 4 H'FFFFF831 to H'0000270F (−1999 to 9999)
C1 (81) 0033 Alarm Value Upper H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 4
C1 (81) 0034 Alarm Value Lower H'FFFFF831 to H'0000270F (−1999 to 9999)
Limit 4
C1 (81) 0035 SP 4 SP lower limit to SP upper limit
C1 (81) 0036 SP 5 SP lower limit to SP upper limit
C1 (81) 0037 SP 6 SP lower limit to SP upper limit
C1 (81) 0038 SP 7 SP lower limit to SP upper limit
C1 (81) 0039 Proportional Band H'00000001 to H'0000270F (0.1 to 999.9)
(Cooling)
C1 (81) 003A Integral Time H'00000000 to H'0000270F
(Cooling) (0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
C1 (81) 003B Derivative Time H'00000000 to H'0000270F
(Cooling) (0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)

3-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C1 (81) 003C SP Ramp Fall H'FFFFFFFF (−1): Same (Same as SP Ramp Set Adjustment
Value Value.)
H'00000000(0): OFF
H'00000001 to H'0000270F (1 to 9999)
C1 (81) 003D Work Bit 1 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 003E Work Bit 1 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 003F Work Bit 2 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0040 Work Bit 2 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0041 Work Bit 3 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0042 Work Bit 3 OFF H'00000000 to H'0000270F (0 to 9999)
3
Delay
C1 (81) 0043 Work Bit 4 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0044 Work Bit 4 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0045 Work Bit 5 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0046 Work Bit 5 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0047 Work Bit 6 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0048 Work Bit 6 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 0049 Work Bit 7 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 004A Work Bit 7 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 004B Work Bit 8 ON H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 004C Work Bit 8 OFF H'00000000 to H'0000270F (0 to 9999)
Delay
C1 (81) 004D Changed H'00000000(0): OFF Protect
Parameters Only H'00000001(1): ON

E5@C Digital Temperature Controllers Communications Manual (H175) 3-7

3 Communications Data for CompoWay/F

Variable Parameter
Address Setting (monitor) value Level
type name
C3 (83) 0000 Input Type H'00000000 (0): Pt (−200 to 850°C/−300 to 1500°F) Initial
H'00000001 (1): Pt (−199.9 to 500.0°C/−199.9 to setting
900.0°F)
H'00000002 (2): Pt (0.0 to 100.0°C/0.0 to 210.0°F)
H'00000003 (3): JPt (−199.9 to 500.0°C/−199.9 to
900.0°F)
H'00000004 (4): JPt (0.0 to 100.0°C/0.0 to 210.0°F)
H'00000005 (5): K (−200 to 1300°C/−300 to 2300°F)
H'00000006 (6): K (−20.0 to 500.0°C/0.0 to 900.0°F)
H'00000007 (7): J (−100 to 850°C/−100 to 1500°F)
H'00000008 (8): J (−20.0 to 400.0°C/0.0 to 750.0°F)
H'00000009 (9): T (−200 to 400°C/−300 to 700°F)
H'0000000A (10): T (−199.9 to 400.0°C/−199.9 to
700.0°F)
H'0000000B (11): E (−200 to 600°C/−300 to 1100°F)
H'0000000C (12): L (−100 to 850°C/−100 to 1500°F)
H'0000000D (13): U (−200 to 400°C/−300 to 700°F)
H'0000000E (14): U (−199.9 to 400.0°C/−199.9 to
700.0°F)
H'0000000F (15): N (−200 to 1300°C/−300 to 2300°F)
H'00000010 (16): R (0 to 1700°C/0 to 3000°F)
H'00000011 (17): S (0 to 1700°C/0 to 3000°F)
H'00000012 (18): B (100 to 1800°C/300 to 3200°F)
H'00000013 (19): W (0 to 2300°C/0 to 3200°F)
H'00000014 (20): PL II (0 to 1300°C/0 to 2300°F)
H'00000015 (21): Infrared temperature sensor (K
140°F/60°C)
H'00000016 (22): Infrared temperature sensor (K
240°F/120°C)
H'00000017 (23): Infrared temperature sensor (K
280°F/140°C)
H'00000018 (24): Infrared temperature sensor (K
440°F/220°C)
H'00000019 (25): 4 to 20 mA
H'0000001A (26): 0 to 20 mA
H'0000001B (27): 1 to 5 V
H'0000001C (28): 0 to 5 V
H'0000001D (29): 0 to 10 V
C3 (83) 0001 Scaling Upper Scaling lower limit + 1 to H'0000270F (Scaling lower limit +
Limit 1 to 9,999)
C3 (83) 0002 Scaling Lower H'FFFFF831 to Scaling upper limit − 1 (−1999 to Scaling
Limit upper limit − 1)
C3 (83) 0003 Decimal Point H'00000000 to 00000003 (0 to 3)
C3 (83) 0004 Temperature H'00000000 (0): °C
Unit H'00000001 (1): °F
C3 (83) 0005 SP Upper Limit The range of values (without decimal point) is as follows:
Temperature input: SP lower limit + 1 to Input range upper
limit
Analog input: SP lower limit + 1 to Scaling upper
limit
C3 (83) 0006 SP Lower Limit The range of values (without decimal point) is as follows:
Temperature input: Input range lower limit to SP upper
limit − 1
Analog input: Scaling lower limit to SP upper limit −
1

3-8 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable Parameter
Address Setting (monitor) value Level
type name

3-1 Variable Area (Setting Range) List

C3 (83) 0007 PID ON/OFF H'00000000 (0): ON/OFF Initial
H'00000001 (1): 2 PID control setting
C3 (83) 0008 Standard or H'00000000 (0): Standard
Heating/Cooling H'00000001 (1): Heating and cooling
C3 (83) 0009 ST H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 000A Control Period H'FFFFFFFE (−2): 0.1 s
(Heating) H'FFFFFFFF (−1): 0.2 s
H'00000000 (0): 0.5 s
H'00000001 to H'00000063 (1 to 99)
C3 (83) 000B Control Period H'FFFFFFFE (−2): 0.1 s
(Cooling) H'FFFFFFFF (−1): 0.2 s
H'00000000 (0): 0.5 s
H'00000001 to H'00000063 (1 to 99)
C3 (83) 000C Direct/Reverse H'00000000 (0): Reverse operation 3
Operation H'00000001 (1): Direct operation
C3 (83) 000D Alarm 1 Type H'00000000 (0): Alarm function OFF
H'00000001 (1): Upper and lower-limit alarm
H'00000002 (2): Upper-limit alarm
H'00000003 (3): Lower-limit alarm
H'00000004 (4): Upper and lower-limit range alarm
H'00000005 (5): Upper and lower-limit alarm with
standby sequence
H'00000006 (6): Upper-limit alarm with standby
sequence
H'00000007 (7): Lower-limit alarm with standby
sequence
H'00000008 (8): Absolute-value upper-limit alarm
H'00000009 (9): Absolute-value lower-limit alarm
H'0000000A (10): Absolute-value upper-limit alarm with
standby sequence
H'0000000B (11): Absolute-value lower-limit alarm with
standby sequence
H'0000000C (12): LBA (Loop Burnout Alarm)
H'0000000D (13): PV change rate alarm
H'0000000E (14): SP absolute-value upper-limit alarm
H'0000000F (15): SP absolute-value lower-limit alarm
H'00000010 (16): MV absolute-value upper-limit alarm
H'00000011 (17): MV absolute-value lower-limit alarm
H'00000012 (18): RSP absolute-value upper-limit alarm
H'00000013 (19): RSP absolute-value lower-limit alarm
Note: Valid only with a remote SP input.
C3 (83) 000E Alarm 2 Type H'00000000 to H'00000013 (0 to 19)
Note: Same settings as the Alarm 1 Type. However, the
LBA (loop burnout alarm) cannot be set.
C3 (83) 000F Alarm 3 Type H'00000000 to H'00000013 (0 to 19)
Note: Same settings as the Alarm 1 Type. However, the
LBA (loop burnout alarm) cannot be set.

E5@C Digital Temperature Controllers Communications Manual (H175) 3-9

3 Communications Data for CompoWay/F

Variable Parameter
Address Setting (monitor) value Level
type name
C3 (83) 0010 Communications H'00000000 to H'00000063 (0 to 99) Commu
Unit No.*1 nications
C3 (83) 0011 Communications H'00000003 (3): 9.6 setting
Baud Rate*1 H'00000004 (4): 19.2
H'00000005 (5): 38.4
H'00000006 (6): 57.6
C3 (83) 0012 Communications H'00000007 (7): 7
Data Length*1 H'00000008 (8): 8
C3 (83) 0013 Communications H'00000001 (1): 1
Stop Bits*1 H'00000002 (2): 2
C3 (83) 0014 Communications H'00000000 (0): None
Parity*1 H'00000001 (1): Even
H'00000002 (2): Odd
*1 After communications parameters have been changed, reset the Digital Controller to enable them.
Note: The alarm function can also be used in Digital Controllers without auxiliary output terminals. In this case,
confirm alarm occurrences via the status data.

3 - 10 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C3 (83) 0016 Event Input H'00000000 (0): None Initial
Assignment 1 H'00000001 (1): RUN/STOP setting
H'00000002 (2): Auto/Manual Switch
H'00000003 (3): Program Start*1
H'00000004 (4): Direct/Reverse Operation
H'00000005 (5): SP Mode Switch
Note: Valid only with a remote SP input.
H'00000006 (6): 100% AT Execute/Cancel
H'00000007 (7): 40% AT Execute/Cancel
H'00000008 (8): Setting Change Enable/Disable
H'00000009 (9): Communications Writing
Enable/Disable
Note: Valid only with external communications.
H'0000000A (10): Alarm Latch Cancel 3
H'0000000B (11): Multi-SP No. Switch, Bit 0
H'0000000C (12): Multi-SP No. Switch, Bit 1
H'0000000D (13): Multi-SP No. Switch, Bit 2
C3 (83) 0017 Event Input H'00000000 to H'0000000D (0 to 13)
Assignment 2 Note: Same as for Event Input Assignment 1.
C3 (83) 0018 Event Input H'00000000 to H'0000000D (0 to 13)
Assignment 3 Note: Same as for Event Input Assignment 1.
C3 (83) 0019 Event Input H'00000000 to H'0000000D (0 to 13)
Assignment 4 Note: Same as for Event Input Assignment 1.
C3 (83) 001A Number of H'00000001 (1): OFF Advanced
Multi-SP Points H'00000002 to H'00000008 (1 to 8) function
C3 (83) 001B SP Ramp Time H'00000000 (0): EU/second setting
Unit H'00000001 (1): EU/minute
H'00000002 (2): EU/hour
C3 (83) 001D Standby Sequence H'00000000 (0): Condition A
Reset H'00000001 (1): Condition B
C3 (83) 001E Auxiliary Output 1 H'00000000 (0): Close in alarm
Open in Alarm H'00000001 (1): Open in alarm
C3 (83) 001F Alarm 1 Hysteresis H'00000001 to H'0000270F Initial
(0.1 to 999.9 for temperature input) setting
(0.01 to 99.99 for analog input)
*1 PRST (program start) can be set even when the program pattern is set to OFF, but the function will be
disabled.

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 11

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C3 (83) 0020 Auxiliary Output 2 H'00000000 (0): Close in alarm Advanced
Open in Alarm H'00000001 (1): Open in alarm function
setting
C3 (83) 0021 Alarm 2 Hysteresis H'00000001 to H'0000270F Initial
(0.1 to 999.9 for temperature input) setting
(0.01 to 99.99 for analog input)
C3 (83) 0022 Auxiliary Output 3 H'00000000 (0): Close in alarm Advanced
Open in Alarm H'00000001 (1): Open in alarm function
setting
C3 (83) 0023 Alarm 3 Hysteresis H'00000001 to H'0000270F Initial
(0.1 to 999.9 for temperature input) setting
(0.01 to 99.99 for analog input)
C3 (83) 0024 HB ON/OFF H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
C3 (83) 0025 Heater Burnout H'00000000 (0): OFF setting
Latch H'00000001 (1): ON
C3 (83) 0026 Heater Burnout H'00000001 to H'000001F4 (0.1 to 50.0)
Hysteresis
C3 (83) 0027 ST Stable Range H'00000001 to H'0000270F (0.1 to 999.9)
C3 (83) 0028 α H'00000000 to H'00000064 (0.00 to 1.00)
C3 (83) 002B Input Digital Filter H'00000000 to H'0000270F (0.0 to 999.9)
C3 (83) 002C PV/SP No. 2 H'00000000 (0): Nothing displayed.
Display Selection H'00000001 (1): PV/SP
H'00000002 (2): PV
H'00000003 (3): PV/SP (character display)
H'00000004 (4): PV/SP/MV
H'00000005 (5): PV/SP/Multi-SP No.
H'00000006 (6): PV/SP/Soak time remain
H'00000007 (7): PV/SP/Internal SP (ramp SP)
H'00000008 (8): PV/SP/Alarm value 1
C3 (83) 002D MV Display H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 002E Automatic Display H'00000000 (0): OFF
Return Time H'00000001 to H'00000063 (1 to 99)
C3 (83) 002F Alarm 1 Latch H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0030 Alarm 2 Latch H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0031 Alarm 3 Latch H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0032 Move to Protect H'00000001 to H'0000001E (1 to 30)
Level Time
C3 (83) 0033 Integrated Alarm H'00000000 to H'000000FF (0 to 255)
Assignment
C3 (83) 0034 Cold Junction H'00000000 (0): OFF
Compensation H'00000001 (1): ON
Method
Note: The alarm function can also be used in Digital Controllers without auxiliary output terminals. In this case,
confirm alarm occurrences via the status data.

3 - 12 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C3 (83) 0038 Alarm 1 ON Delay H'00000000 to H'000003E7 (0 to 999) Advanced
C3 (83) 0039 Alarm 2 ON Delay H'00000000 to H'000003E7 (0 to 999) function
C3 (83) 003A Alarm 3 ON Delay H'00000000 to H'000003E7 (0 to 999) setting
C3 (83) 003B Alarm 1 OFF Delay H'00000000 to H'000003E7 (0 to 999)
C3 (83) 003C Alarm 2 OFF Delay H'00000000 to H'000003E7 (0 to 999)
C3 (83) 003D Alarm 3 OFF Delay H'00000000 to H'000003E7 (0 to 999)
C3 (83) 003E Transfer Output H'00000000 (0): OFF Initial
Type H'00000001 (1): Set point setting
H'00000002 (2): Set point during SP ramp
H'00000003 (3): PV
H'00000004 (4): MV (heating)
H'00000005 (5): MV (cooling)
H'00000006 (6): Valve opening
* Only for Position-proportional Models. 3
C3 (83) 003F Transfer Output H'FFFFF831 to H'0000270F (-1999 to 9999)*1
Upper Limit
C3 (83) 0040 Transfer Output H'FFFFF831 to H'0000270F (-1999 to 9999)*1
Lower Limit
C3 (83) 0041 Control Output 1 H'00000000 (0): 4 to 20 mA
Signal H'00000001 (1): 0 to 20 mA
C3 (83) 0043 MV at Stop and H'00000000 (0): OFF Advanced
Error Addition H'00000001 (1): ON function
C3 (83) 0044 Auto/Manual H'00000000 (0): OFF setting
Select Addition H'00000001 (1): ON
C3 (83) 0045 RT H'00000000 (0): OFF
H'00000001 (1): ON
Note: Valid only with temperature input.
C3 (83) 0046 HS Alarm Use H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0047 HS Alarm Latch H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0048 HS Alarm H'00000001 to H'000001F4 (0.1 to 50.0)
Hysteresis
C3 (83) 0049 LBA Detection H'00000000 to H'0000270F (0 to 9999)
Time
C3 (83) 004A LBA Level H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
C3 (83) 004B LBA Band H'00000000 to H'0000270F
(0.0 to 999.9 for temperature input)
(0.00 to 99.99 for analog input)
*1 The setting (monitor) range depends on the transfer output type setting. (Refer to Section 5 Parameters in
the E5@C Digital Temperature Controllers User's Manual (Cat. No. H174).)

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 13

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C3 (83) 004C Protocol Setting*1 H'00000000 (0): CompoWay/F Communic
H'00000001 (1): Modbus ations
H'00000002 (2): Component communications setting
H'00000003 (3): Host Link (FINS)
H'00000004 (4): MC protocol (Format 4)
C3 (83) 004D Send Data Wait H'00000000 to H'00000063 (0 to 99)
Time*1
C3 (83) 004E Control Output 1 Control output 1 is a relay output or voltage output (for Advanced
Assignment driving SSR): function
H'00000000 (0): Not assigned. setting
H'00000001 (1): Control output (heating)
H'00000002 (2): Control output (cooling)
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'00000006 (6): Alarm 4
H'00000007 (7): Heater alarm
H'00000008 (8): HB alarm
H'00000009 (9): HS alarm
H'0000000A (10): Input error
H'0000000B (11): RSP input error
H'0000000C (12): Program end output*2
H'0000000D (13): RUN output
H'0000000E (14): Integrated alarm
H'0000000F (15): Work bit 1
H'00000010 (16): Work bit 2
H'00000011 (17): Work bit 3
H'00000012 (18): Work bit 4
H'00000013 (19): Work bit 5
H'00000014 (20): Work bit 6
H'00000015 (21): Work bit 7
H'00000016 (22): Work bit 8
When control output 1 is a current output:
H'00000000 (0): Not assigned.
H'00000001 (1): Control output (heating)
H'00000002 (2): Control output (cooling)
C3 (83) 004F Control Output 2 Control output 2 is a relay output or voltage output (for
Assignment driving SSR):
H'00000000 to H'00000016 (0 to 22)
* Same as for the Control Output 1 Assignment pa-
rameter.
When control output 2 is a current output:
H'00000000 to H'00000002 (0 to 2)
* Same as for the Control Output 1 Assignment pa-
rameter.
*1 After communications parameters have been changed, reset the Digital Controller to enable them.
*2 P.END (program end output) can be set even when the program pattern is set to OFF, but the function will be
disabled.

3 - 14 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C3 (83) 0050 Auxiliary Output 1 H'00000000 (0): Not assigned. Advanced
Assignment H'00000001 (1): Control output (heating) function
H'00000002 (2): Control output (cooling) setting
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'00000006 (6): Alarm 4
H'00000007 (7): Heater alarm
H'00000008 (8): HB alarm
H'00000009 (9): HS alarm
H'0000000A (10): Input error
H'0000000B (11): RSP input error
H'0000000C (12): Program end output
H'0000000D (13): RUN output
H'0000000E (14): Integrated alarm
3
H'0000000F (15): Work bit 1
H'00000010 (16): Work bit 2
H'00000011 (17): Work bit 3
H'00000012 (18): Work bit 4
H'00000013 (19): Work bit 5
H'00000014 (20): Work bit 6
H'00000015 (21): Work bit 7
H'00000016 (22): Work bit 8
C3 (83) 0051 Auxiliary Output 2 H'00000000 to H'00000016 (0 to 22)
Assignment Note: Same as for the Auxiliary Output 1 Assignment
parameter.
C3 (83) 0053 Program Pattern H'00000000 (0): OFF Initial
H'00000001 (1): STOP setting
H'00000002 (2): CONT
C3 (83) 0054 Soak Time Unit H'00000000 (0): Minutes Advanced
H'00000001 (1): Hours function
C3 (83) 0055 Alarm SP H'00000000 (0): Set point during SP ramp setting
Selection H'00000001 (1): Set point
C3 (83) 0056 Auxiliary Output 3 H'00000000 to H'00000016 (0 to 22)
Assignment Note: Same as for the Auxiliary Output 1 Assignment
parameter.
C3 (83) 0057 Close/Floating H'00000000 (0): Floating Initial
H'00000001 (1): Close
setting
C3 (83) 0058 Travel Time H'00000001 to H'000003E7 (1 to 999)

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 15

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C3 (83) 0059 PV Dead Band H'00000000 to H'0000270F (0 to 9999) Advanced
C3 (83) 005B Manual MV Limit H'00000000 (0): OFF function
Enable H'00000001 (1): ON
setting
C3 (83) 005C Direct Setting of H'00000000 (0): OFF
Position H'00000001 (1): ON
Proportional MV
C3 (83) 005D AT Calculated Gain H'00000001 to H'00000064 (0.1 to 10.0)
C3 (83) 005E AT Hysteresis H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 9.99 for analog input)
C3 (83) 005F Limit Cycle MV H'00000032 to H'000001F4 (5.0 to 50.0)
Amplitude
C3 (83) 0060 Remote SP Enable H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0061 Remote SP Upper Input range lower limit to Input range upper limit for
limit temperature input
Scaling lower limit to Scaling upper limit for analog input
C3 (83) 0062 Remote SP Lower Input range lower limit to Input range upper limit for Advanced
limit temperature input function
Scaling lower limit to Scaling upper limit for analog input setting
C3 (83) 0063 SP Tracking H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 0067 PV Rate of Change H'00000001 to H'000003E7 (1 to 999)
Calculation Period
C3 (83) 0068 Heating/Cooling H'00000000 (0): Same (Same as for heating.)
Tuning Method H'00000001 (1): Linear
H'00000002 (2): Air cooling
H'00000003 (3): Water cooling
C3 (83) 006C Extraction of H'00000000 (0): OFF Initial
Square Root H'00000001 (1): ON setting
Enable

3 - 16 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C3 (83) 006D PF Setting H'00000000 (0): Disabled. Advanced
H'00000001 (1): Run function
H'00000002 (2): Stop setting
H'00000003 (3): RUN/STOP
H'00000004 (4): 100% AT execute
H'00000005 (5): 40% AT execute
H'00000006 (6): Alarm latch cancel
H'00000007 (7): Auto/manual switch
H'00000008 (8): Monitor/setting item
H'00000009 (9): Digit shift key
C3 (83) 006E Monitor/Setting H'000000000 (0): Disabled
Item 1 H'000000001 (1): PV/SP/Multi-SP
H'000000002 (2): PV/SP/MV
H'000000003 (3): PV/SP/soak time remain
H'000000004 (4): Proportional band 3
H'000000005 (5): Integral time
H'000000006 (6): Derivative time
H'000000007 (7): Alarm value 1
H'000000008 (8): Alarm value upper limit 1
H'000000009 (9): Alarm value lower limit 1
H'00000000A (10): Alarm value 2
H'00000000B (11): Alarm value upper limit 2
H'00000000C (12): Alarm value lower limit 2
H'00000000D (13): Alarm value 3
H'00000000E (14): Alarm value upper limit 3
H'00000000F (15): Alarm value lower limit 3
H'000000010 (16): Alarm value 4
H'000000011 (17): Alarm value upper limit 4
H'000000012 (18): Alarm value lower limit 4
H'000000013 (19): PV/SP/Internal set point
H'000000014 (20): PV/SP/Alarm value 1
H'000000015 (21): Proportional band (cooling)
H'000000016 (22): Integral time (cooling)
H'000000017 (23): Derivative time (cooling)
C3 (83) 006F Monitor/Setting H'00000000 to H'00000017 (0 to 23)
Item 2 Note: Same as for Monitor/Setting Item 1.
C3 (83) 0070 Monitor/Setting H'00000000 to H'00000017 (0 to 23)
Item 3 Note: Same as for Monitor/Setting Item 1.
C3 (83) 0071 Monitor/Setting H'00000000 to H'00000017 (0 to 23)
Item 4 Note: Same as for Monitor/Setting Item 1.
C3 (83) 0072 Monitor/Setting H'00000000 to H'00000017 (0 to 23)
Item 5 Note: Same as for Monitor/Setting Item 1.

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 17

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C3 (83) 0073 PV/SP No. 1 H'000000000 (0): Nothing displayed. Advanced
Display Selection H'000000001 (1): PV/SP function
H'000000002 (2): PV setting
H'000000003 (3): PV/SP (character display)
H'000000004 (4): PV/SP/MV
H'000000005 (5): PV/SP/Multi-SP No.
H'000000006 (6): PV/SP/Soak time remain
H'000000007 (7): PV/SP/Internal SP (ramp SP)
H'000000008 (8): PV/SP/Alarm value 1
C3 (83) 0074 MV Display H'00000000 (0): MV (heating)
Selection H'00000001 (1): MV (cooling)
C3 (83) 0075 PV Decimal Point H'00000000 (0): OFF
Display H'00000001 (1): ON
C3 (83) 0076 PV Status Display H'00000000 (0): OFF
Function H'00000001 (1): Manual
H'00000002 (2): Stop
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'000000006 (6): Alarm 4
H'000000007 (7): Alarm 1 to 4 OR status
H'000000008 (8): Heater alarm
C3 (83) 0077 SV Status Display H'00000000 to H'00000008 (0 to 8)
Function Note: Same as for PV Status Display Function
C3 (83) 0083 Display Refresh H'00000000 (0): OFF
Period H'00000001 (1): 0.25
H'00000002 (2): 0.5
H'00000003 (3): 1.0
C3 (83) 0084 Alarm 4 Type H'00000000 to H'00000013 (0 to 19) Initial
Note: Same settings as the Alarm 1 Type. However, setting
the LBA (loop burnout alarm) cannot be set.
C3 (83) 0085 Event Input H'00000000 to H'0000000D (0 to 13)
Assignment 5 Note: Same as for Event Input Assignment 1.
C3 (83) 0086 Event Input H'00000000 to H'0000000D (0 to 13)
Assignment 6 Note: Same as for Event Input Assignment 1.
C3 (83) 0087 Auxiliary Output 4 H'00000000 (0): Close in alarm Advanced
Open in Alarm H'00000001 (1): Open in alarm function
setting
C3 (83) 0088 Alarm 4 Hysteresis H'00000001 to H'0000270F Initial
(0.1 to 999.9 for temperature input) setting
(0.01 to 99.99 for analog input)
C3 (83) 0089 Moving Average H'00000000 (0): OFF Advanced
Count H'00000001 (1): 2 times function
H'00000002 (2): 4 times setting
H'00000003 (3): 8 times
H'00000004 (4): 16 times
H'00000005 (5): 32 times
C3 (83) 008A Alarm 4 Latch H'00000000 (0): OFF
H'00000001 (1): ON
C3 (83) 008B Alarm 4 ON delay H'00000000 to H'000003E7 (0 to 999)
C3 (83) 008C Alarm 4 OFF delay H'00000000 to H'000003E7 (0 to 999)
C3 (83) 008D Control Output 2 H'00000000 (0): 4 to 20 mA Initial
Signal H'00000001 (1): 0 to 20 mA setting
C3 (83) 008E Transfer Output H'00000000 (0): 4 to 20 mA
Signal H'00000001 (1): 1 to 5 V

3 - 18 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type

3-1 Variable Area (Setting Range) List

C3 (83) 008F Auxiliary Output 4 H'00000000 to H'0000016 (0 to 22) Advanced
Assignment Note: Same as for the Auxiliary Output 1 Assignment function
parameter. setting
C3 (83) 0090 Remote SP Input H'00000000 (0): 4 to 20 mA
H'00000001 (1): 0 to 20 mA
H'00000002 (2): 1 to 5 V
H'00000003 (3): 0 to 5 V
H'00000004 (4): 0 to 10 V
C3 (83) 0091 Integral/Derivative H'00000000 (0): 1 s
Time Unit H'00000001 (1): 0.1 s
C3 (83) 0092 Manual Output H'00000000 (0): HOLD
Method H'00000001 (1): INIT
C3 (83) 0093 Manual MV Initial Standard control or close position-proportional control:
Value H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control: 3
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
C3 (83) 0094 Minimum Output H'00000000 to H'000001F4 (0 to 50.0)
ON/OFF Band
C3 (83) 0095 Display Brightness H'00000001 to H'00000003 (1 to 3)
C3 (83) 0096 Highest H'00000000 to H'00000063 (0 to 99) Communi
Communications cations
Unit No. setting
C3 (83) 0097 Area H'00000000 (0: DM or D data registers)
H'00000001 (1: EM0 or W link registers)
H'00000002 (2: EM1 or R file registers)
H'00000003 (3: EM2 or ZR file registers)
H'00000004 (4: EM3)
H'00000005 (5: EM4)
H'00000006 (6: EM5)
H'00000007 (7: EM6)
H'00000008 (8: EM7)
H'00000009 (9: EM8)
H'0000000A (10: EM9)
H'0000000B (11: EMA)
H'0000000C (12: EMB)
H'0000000D (13: EMC)
H'0000000E (14: EMD)
H'0000000F (15: EME)
H'00000010 (16: EMF)
H'00000011 (17: EM10)
H'00000012 (18: EM11)
H'00000013 (19: EM12)
H'00000014 (20: EM13)
H'00000015 (21: EM14)
H'00000016 (22: EM15)
H'00000017 (23: EM16)
H'00000018 (24: EM17)
H'00000019 (25: EM18)
* Information after “or” is applicable when the Protocol
Setting parameter is set to MCP4.) Also, all set val-
ues of 4 and higher specify D data registers.
C3 (83) 0098 First Address H'00000000 to H'00000063 (0 to 99)
Upper Word
C3 (83) 0099 First Address H'00000000 to H'0000270F (0 to 9999)
Lower Word
C3 (83) 009A Receive Data Wait H'00000064 to H'0000270F (100 to 9999)
Time

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 19

3 Communications Data for CompoWay/F

Variable
Address Parameter name Setting (monitor) value Level
type
C3 (83) 009B Communications H'00000000 to H'00000063 (0 to 99) Communi
Node Number cations
C3 (83) 009C Upload Setting 1 H'00000000 to H'00000060 (0 to 98) setting
C3 (83) 009D Upload Setting 2 H'00000000 to H'00000060 (0 to 98)
C3 (83) 009E Upload Setting 3 H'00000000 to H'00000060 (0 to 98)
C3 (83) 009F Upload Setting 4 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A0 Upload Setting 5 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A1 Upload Setting 6 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A2 Upload Setting 7 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A3 Upload Setting 8 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A4 Upload Setting 9 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A5 Upload Setting 10 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A6 Upload Setting 11 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A7 Upload Setting 12 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A8 Upload Setting 13 H'00000000 to H'00000060 (0 to 98)
C3 (83) 00A9 Download Setting H'0000001E to H'00000060 (30 to 98)
1
C3 (83) 00AA Download Setting H'0000001E to H'00000060 (30 to 98)
2
C3 (83) 00AB Download Setting H'0000001E to H'00000060 (30 to 98)
3
C3 (83) 00AC Download Setting H'0000001E to H'00000060 (30 to 98)
4
C3 (83) 00AD Download Setting H'0000001E to H'00000060 (30 to 98)
5
C3 (83) 00AE Download Setting H'0000001E to H'00000060 (30 to 98)
6
C3 (83) 00AF Download Setting H'0000001E to H'00000060 (30 to 98)
7
C3 (83) 00B0 Download Setting H'0000001E to H'00000060 (30 to 98)
8
C3 (83) 00B1 Download Setting H'0000001E to H'00000060 (30 to 98)
9
C3 (83) 00B2 Download Setting H'0000001E to H'00000060 (30 to 98)
10
C3 (83) 00B3 Download Setting H'0000001E to H'00000060 (30 to 98)
11
C3 (83) 00B4 Download Setting H'0000001E to H'00000060 (30 to 98)
12
C3 (83) 00B5 Download Setting H'0000001E to H'00000060 (30 to 98)
13
C3 (83) 00B6 SP Slope H'00000001 to H'0000270F (0.001 to 9.999)
C3 (83) 00B7 SP Offset H'FFFFF831 to H'0000270F
(−199.9 to 999.9: Input type = Temperature input)
(−1999 to 9999: Input type = Analog input)

3 - 20 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

3-2 Status and Status 2

The figure below shows the structure of the status data.

z Status Structure

3-2 Status and Status 2

Outputs Input error Error status

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit position
0

Heater overcurrent (CT1)

Heater current hold (CT1) 3
A/D converter error
HS alarm (CT1)
RSP input error

Input error
Potentiometer input error
Control output (heating)/open output
Control output (cooling)/close output
HB (heater burnout) alarm (CT1)
HB (heater burnout) alarm (CT2)
Alarm 1
Alarm 2
Alarm 3
Program end output

Error status Operating status Event inputs

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Bit position
0

Event input 1
Event input 2
Event input 3
Event input 4
Write mode
Non-volatile memory
Setup area
AT execute/cancel
RUN/STOP
Communications writing
Auto/manual switch
Program start
Heater overcurrent (CT2)
Heater current hold (CT2)

HS alarm (CT2)

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 21

3 Communications Data for CompoWay/F

z Status 2 Structure
Spare Operating status

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit position
0 0 0 0 0 0 0 0

Work bit 1
Work bit 2
Work bit 3
Work bit 4
Work bit 5
Work bit 6
Work bit 7
Work bit 8
Operating status
Outputs

Spare Spare Operating Spare Event

status inputs

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Bit position
0 0 0 0 0 0 0 0 0 0

Event input 5
Event input 6
Invert direct/reverse operation
SP ramp
SP Mode
Alarm 4

3 - 22 E5@C Digital Temperature Controllers Communications Manual (H175)

 3 Communications Data for CompoWay/F

z Status Details
Bit Description
Bit position Status
0 1
Status 0 Heater overcurrent (CT1) Not generated Generated
(lower 1 Heater current hold (CT1)* Update Hold
word) 2 A/D converter error Not generated Generated

3-2 Status and Status 2

3 HS alarm (CT1) OFF ON
4 RSP input error Not generated Generated
5 Spare OFF ---
6 Input error Not generated Generated
7 Potentiometer input error Not generated Generated
8 Control output (heating)/open output OFF ON
9 Control output (cooling)/close output OFF ON
10 HB (heater burnout) alarm (CT1) OFF ON
11 HB (heater burnout) alarm (CT2) OFF ON 3
12 Alarm 1 OFF ON
13 Alarm 2 OFF ON
14 Alarm 3 OFF ON
15 Program end output OFF ON
Status 16 Event input 1 OFF ON
(upper 17 Event input 2 OFF ON
word) 18 Event input 3 OFF ON
19 Event input 4 OFF ON
20 Write mode Backup mode RAM write mode
21 Non-volatile memory RAM = Non-volatile RAM ≠ Non-volatile
memory memory
22 Setup area Setup area 0 Setup area 1
23 AT execute/cancel AT canceled AT execution in
progress
24 RUN/STOP Run Stop
25 Communications writing OFF (disabled) ON (enabled)
26 Auto/manual switch Automatic mode Manual mode
27 Program start Reset Start
28 Heater overcurrent (CT2) Not generated Generated
29 Heater current hold (CT2) Update Hold
30 Spare OFF ---
31 HS alarm (CT2) OFF ON
Note1 “Spare” bits are always OFF.
2 When read in setup area 1, the status of the bits will be as follows:

• Overcurrent: Last value held

• A/D converter error: Last value held
• Input error: Last value held
• HB and HS outputs: Cleared
• Program end output: Cleared
• Current hold: Last value held
• Heating and cooling outputs: Cleared
• Alarm outputs: Cleared

* When the control output ON time is less than 30 ms for a control period of 0.1 s or 0.2 s or when it is less than
100 ms for any other control period, the bit is set to “1” and the heater current is held at the last current value.

E5@C Digital Temperature Controllers Communications Manual (H175) 3 - 23

3 Communications Data for CompoWay/F

z Status 2 Details
Bit Description
Bit position Status
0 1
Status 0 Work bit 1 OFF ON
(lower 1 Work bit 2 OFF ON
word) 2 Work bit 3 OFF ON
3 Work bit 4 OFF ON
4 Work bit 5 OFF ON
5 Work bit 6 OFF ON
6 Work bit 7 OFF ON
7 Work bit 8 OFF ON
8 Spare OFF ---
9 Spare OFF ---
10 Spare OFF ---
11 Spare OFF ---
12 Spare OFF ---
13 Spare OFF ---
14 Spare OFF ---
15 Spare OFF ---
Status 16 Event input 5 OFF ON
(upper 17 Event input 6 OFF ON
word) 18 Spare OFF ---
19 Spare OFF ---
20 Invert direct/reverse operation Not invert Invert
21 SP ramp OFF During SP ramp
22 Spare OFF ---
23 Spare OFF ---
24 Spare OFF ---
25 Spare OFF ---
26 Spare OFF ---
27 SP Mode Local SP Mode Remote SP Mode
28 Alarm 4 OFF ON
29 Spare OFF ---
30 Spare OFF ---
31 Spare OFF ---
Note1 “Spare” bits are always OFF.
2 When read in setup area 1, the status of the bits will be as follows:

• Work bits 1 to 8: Cleared

• SP ramp: Last value held

3 - 24 E5@C Digital Temperature Controllers Communications Manual (H175)

 Modbus Communications
Procedure
Read this section if you are to communicate using the Modbus format.

4-1 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-1 Command Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-1-2 Response Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-1-3 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-2 Function List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-3 Variable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
4-4 Detailed Description of the Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-4-1 Variable Read, Multiple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-4-2 Variable Write, Multiple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4-4-3 Variable Write, Single/Operation Command . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4-4-4 Echoback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

E5@C Digital Temperature Controllers Communications Manual (H175) 4-1

4 Modbus Communications Procedure

4-1 Data Format

The data format complies with the Modbus (RTU) communications protocol, so commands from the
host and responses from the E5@C are contained in data blocks called frames.
The structure of the command and response frames is described below.

In the following explanations, hexadecimal values are expressed by adding the prefix H' before the
number, e.g., H'02. Numbers and alphabetic characters without the H' prefix are ASCII characters.

4-1-1 Command Frame

When using RTU mode, start with a silent interval of at least 3.5 character times and end with a silent
interval of at least 3.5 character times.
Slave Function
Data CRC-16
address code

1 1 2 bytes

CRC-16 calculation range

Silent interval of 3.5 character times minimum.

Specify the unit number.
The unit number can be set between H'00 to H'63 hexadecimal (0 to 99 decimal).
Slave address
Specify H'00 for a broadcast transmission. No responses will be returned for
broadcast transmissions.
The function code is a 1-byte hexadecimal code that indicates the type of command
Function code
sent from the host device.
This is the text data associated with the specified function code. Specify the required
Data
data, such as the variable address or setting data. (Set in hexadecimal.)
Cyclic Redundancy Check
This check code is calculated with the data from the slave address to the end of the
CRC-16
data.
The check code is 2-byte hexadecimal.
Silent interval of 3.5 character times minimum.

4-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

z CRC-16 Calculation Example

Messages are processed one byte at a time in the work memory (a 16-bit register known as the
CRC register).
(1) The CRC register is initialized to H’FFFF.
(2) An XOR operation is performed on the content of the CRC register and the first byte of the
message, and the result is returned to the CRC register.
(3) The MSB is packed with zeroes and the CRC register is shifted 1 bit to the right.
(4) If the bit shifted from the LSB is 0, step 3 is repeated (next bit-shift processing).
If the bit shifted from the LSB is 1, an XOR is performed on the content of the CRC register
and H’A001, and the result is returned to the CRC register.

4-1 Data Format

(5) Steps 3 and 4 are repeated until 8 bits are shifted.
(6) CRC processing continues to the end of the message, as XOR operations are performed
on the content of the CRC register and the next byte of the message, step 3 is repeated,
and the result is returned to the CRC register.
(7) The result of the CRC calculation (value in the CRC register) is appended to the last byte of
the message. 4
• Example of Appending the Calculation Result

4-1-1 Command Frame

When the calculated CRC value is H'1234, the CRC value is appended to the command
frame as follows.
Slave Function
code Data CRC-16
address
Low High
H'34 H'12
1 1 2 bytes
CRC-16 calculation range

E5@C Digital Temperature Controllers Communications Manual (H175) 4-3

4 Modbus Communications Procedure

4-1-2 Response Frame

z Normal Response Frame
Slave Function
address code Data CRC-16

1 1 2 bytes
CRC-16 calculation range

z Error Response Frame

Slave Function Error
address code code CRC-16

1 1 1 2 bytes
CRC-16 calculation range

The number specified in the command frame is entered as-is. This is the unit
Slave address
number of the Unit returning the response.
This is the received function code with the hexadecimal value of H'80 added to
indicate that the response is an error response.
Function code
Example: Received function code = H'03
Function code in response frame when an error occurred = H'83
Error code This code indicates the kind of error that occurred.
Cyclic Redundancy Check
This check code is calculated with the data from the slave address to the end
CRC-16
of the data.
The check code is 2-byte hexadecimal.

4-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

4-1-3 Error Codes

Error
End code Name Description detection
priority
H'01 Function code An unsupported function code was received. 1
error
H'02 Variable address The specified variable area address is out-of-range. 2
error
H'03 Variable data The amount of data does not match the number of 3
error elements.
The byte count is not 2 times the number of elements.

4-1 Data Format

The response length exceeds the size of the
communications buffer.
The command code or related information in the operation
command is wrong or the write data is not in the setting
range.
H'04 Operation error The write data contents are not allowed in the present 4
operation mode.
• The Communications Writing parameter is set to “OFF”
4
(disabled).
• Attempted to write to a parameter in setup area 1 from

4-1-3 Error Codes

setup area 0.
• Attempted to write to a protect parameter from other than
the protect level.
• AT execution is in progress.
• The command cannot be processed.

z No Response
In the following cases, the received command will not be processed and a response will not be
returned.
Consequently, a timeout error will occur at the host device.
• The slave address in the received command does not match the communications unit number.
• A parity error, framing error, or overrun error occurred due to a problem such as a transfer error.
• A CRC-16 code error occurred in the received command frame.
• There was a time interval of more than 3.5 character times between data packets that make up
the command frame.

Furthermore, the specified function's processing will be performed but no response will be returned
for broadcast functions (slave address = H'00).

E5@C Digital Temperature Controllers Communications Manual (H175) 4-5

4 Modbus Communications Procedure

4-2 Function List

The following table lists the function codes.

Function Code List

Function code Name Process
03 (H'03) Read variable This function reads from the variable area.
(multiple) It is possible to read two or more consecutive variables.
16 (H'10) Write variable This function writes to the variable area.
(multiple) It is possible to write two or more consecutive variables.
It is also possible to broadcast this function (broadcast
transmission).
06 (H'06) Write variable This function writes to the variable area and writes operation
(Single/operation commands.
command) It is also possible to write to a single parameter by specifying
the address in 2-byte mode. (This is not supported in 4-byte
mode.)
It is also possible to broadcast this function (broadcast
transmission.)
08 (H'08) Echoback Test This function performs an echoback test.

4-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

4-3 Variable Area

The variable area is the region of memory used to exchange data with the E5@C through communica-
tions.
Operations such as reading the process value and reading/writing parameters are performed on the
variable area.
On the other hand, operation commands do not use the variable area.
E5@C

Operation Microcomputer
commands, etc.

4-3 Variable Area

Variable area

Read/write

When accessing the variable area, the position of a variable in the variable area is specified with a word
identifier, area number, and address in the area.
4
z Addresses
An address is appended to each of the variable types. Express addresses in 2-byte hexadecimal
and append them for the specified access size.

z Number of Elements
The number of elements is expressed in 2-byte hexadecimal. The setting range for the number of
elements varies according to the command.

Four-byte Mode
One element uses 2 bytes of data, so specify two-element units. Reading and writing in 4-byte units
is executed by specifying an even address and specifying the number of elements in multiples of 2.

Two-byte Mode
One element uses 2 bytes of data, so specify one-element units. Reading and writing in 2-byte data
units is executed by specifying 1-element units.

z Set Values
The values read from the variable area or written to the variable area are expressed in hexadecimal,
ignoring the decimal point position. (Negative values are expressed in 2's complement format.)
Example: D'105.0 → H'0000041A
The variables are 4-digit or 8-digit hexadecimal values. Negative values are expressed in 2's
complement format. The values are hexadecimal values with no decimal point indication.
For example, if the E5@C's process value is read in 4-byte mode when the process value is 105.0,
the read value will be H'0000041A (105.0 → 1050 → H'0000041A).

E5@C Digital Temperature Controllers Communications Manual (H175) 4-7

4 Modbus Communications Procedure

4-4 Detailed Description of the Functions

4-4-1 Variable Read, Multiple

To read from the variable area, set the required data in the command frame, as shown in the following
diagram.

Command Frame
Slave Function Number of CRC-16
address Read start address Elements
code

H'03

1 1 2 2 bytes
2

Name Description
Slave address Specify the E5@C's unit number.
The unit number can be set between H'01 and H'63 hexadecimal (1 to 99 decimal).
Function code The Read Variable Area function's function code is H'03.
Read start address Specify the address containing the data to be read.
Refer to Section 5 Communications Data for Modbus for details on addresses.
Number of elements 4-byte Mode
Specify 2 times the number of setting data items as the number of elements to be
read. The setting range for the number of elements is H'0002 to H'006A (2 to 106).
When H'006A is set, 53 items of setting data can be read.
Example: When reading 2 items of setting data, set the number of elements to
H'0004.
2-byte Mode
Specify the number of setting data items to be read as the number of elements.
The setting range for the number of elements is H'0001 to H'006A (1 to 106).
When H'006A is set, 106 items of setting data can be read.
Example: When reading two items of setting data, set the number of elements to
H'0002.
CRC-16 This check code is calculated with the data from the slave address to the end of the
data.
For details on the CRC-16 calculation, refer to CRC-16 Calculation Example in 4-1-1
Command Frame on page 4-2.

4-8 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

Response Frame
Slave Function Byte Read data (for the number of
CRC-16
address code count elements)

H'03

4-4 Detailed Description of the Functions

1 1 1 0 to 212 (2 × 106) 2

Name Description
Slave address The value from the command frame is entered as-is.
Function code This is the received function code.
When the function ended normally, the function code is left as-is. When an error
occurred, the hexadecimal value of H'80 is added to the function code to indicate
that the response is an error response.
Example: Received function code = H'03
Function code in response frame when an error occurred = H'83
Byte count Contains the number of bytes of read data.
Read data Contains the number of setting data items that were read.
CRC-16 This check code is calculated with the data from the slave address to the end of the
data.
For details on the CRC-16 calculation, refer to CRC-16 Calculation Example in 4-1-1 4
Command Frame on page 4-2.

4-4-1 Variable Read, Multiple

Response Code
Function code Error code Error name Cause
H'83 H'02 Variable address The read start address is incorrect.
error
H'03 Variable data error The number of elements exceeds the
allowed range.
H'03 --- Normal completion No errors were found.

Reading Undisplayed Parameters

It is possible to read the parameters that are not displayed due to display settings as well as the
parameters that are never displayed in the Controller.

• Example Command and Response

The following example shows the command and response when reading the process value (slave
address: H'01).
Process Value in 4-byte Mode
• Address: H’0000; Read data: H’000003E8 (100.0 °C)
Command: 01 03 00 00 00 02 C4 0B(CRC-16)

Response: 01 03 04 00 00 03 E8 FA 8D(CRC-16)
Process Value in 2-byte Mode
• Address: H’2000; Read data: H’03E8 (100.0 °C)
Command: 01 03 20 00 00 01 8FCA(CRC-16)

Response: 01 03 02 03 E8 B8 FA(CRC-16)

E5@C Digital Temperature Controllers Communications Manual (H175) 4-9

4 Modbus Communications Procedure

4-4-2 Variable Write, Multiple

To write data to the variable area, set the required data in the command frame, as shown in the follow-
ing diagram.

Command Frame
Slave Function Number of Write data (for the number of CRC-16
Write start address Byte count elements)
address code Elements

H'10

1 1 2 2 1 0 to 208 (2 × 104) 2

Name Description
Slave address Specify the E5@C's unit number.
The unit number can be set between H'01 and H'63 hexadecimal (1 to 99 decimal).
Function code The Write Variable Area function's function code is H'10.
Write start address Specify the starting address where the setting data will be written.
Refer to Section 5 Communications Data for Modbus for details on addresses.
Number of elements 4-byte Mode
Specify 2 times the number of setting data items as the number of elements to be
written.
The setting range for the number of elements is H'0002 to H'0068 (2 to 104).
When H'0068 is set, 52 items of setting data can be read.
Example: When writing 2 items of setting data, set the number of elements to
H'0004.
2-byte Mode
Specify the number of setting data items to be written as the number of elements.
The setting range for the number of elements is H'0001 to H'0068 (1 to 104).
When H'0068 is set, 104 items of setting data can be read.
Example: When reading two items of setting data, set the number of elements to
H'0002.
Byte count Specify the number of bytes of write data.
CRC-16 This check code is calculated with the data from the slave address to the end of the
data.
For details on the CRC-16 calculation, refer to CRC-16 Calculation Example in 4-1-1
Command Frame on page 4-2.

4 - 10 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

z Response Frame
Slave Function Number of CRC-16
address code Write start address
Elements

H’ 10

4-4 Detailed Description of the Functions

1 1 2 2 2 bytes

Name Description
Slave address The value from the command frame is entered as-is.
Function code This is the received function code.
When the function ended normally, the function code is left as-is. When
an error occurred, the hexadecimal value of H'80 is added to the function
code to indicate that the response is an error response.
Example: Received function code = H'10
Function code in response frame when an error occurred =
H'90
Write start address This is the received write start address.
Number of elements This is the received number of elements.
CRC-16 This check code is calculated with the data from the slave address to the
end of the data.
4
For details on the CRC-16 calculation, refer to CRC-16 Calculation
Example in 4-1-1 Command Frame on page 4-2.

4-4-2 Variable Write, Multiple

Response Code
Function code Error code Error name Cause
H'90 H'02 Variable address The write start address is incorrect.
error
H'03 Variable data error • The amount of data does not match the
number of elements.
• The byte count is not 2 times the number
of elements.
• The write data is out of the setting range.
H'04 Operation error The Controller cannot write the data in its
present operating status.
The write data contents are not allowed in
the present operation mode.
• The Communications Writing parameter is
set to "OFF" (disabled).
• Attempted to write to a parameter in setup
area 1 from setup area 0.
• Attempted to write to a protect parameter
from other than the protect level.
• AT execution is in progress.
H'10 --- Normal completion No errors were found.

E5@C Digital Temperature Controllers Communications Manual (H175) 4 - 11

4 Modbus Communications Procedure

Writing Undisplayed Parameters

It is possible to write the parameters that are not displayed due to display settings as well as the
parameters that are never displayed in the Controller.

• Example Command and Response

The following example shows the command/response when writing the Alarm Value Upper Limit 1
and Alarm Value Lower Limit 1 parameters.
(In this case, the slave address is H'01.)
Four-byte Mode
Alarm Value Upper Limit 1
• Address: H'010A; Write data: H'000003E8 (when 1000)
Alarm Value Lower Limit 1
• Address: H'010C; Write data: H'FFFFFC18 (when −1000)

Command: 01 10 01 0A 00 04 08 00 00 03 E8 FF FF FC 18 8D E9(CRC-16)

Response: 01 10 01 0A 00 04 E0 34(CRC-16)
Two-byte Mode
Alarm Value Upper Limit 1
• Address: H'2105; Write data: H'03E8 (when 1000)
Alarm Value Lower Limit 1
• Address: H'2106; Write data: H' FC18 (when −1000)

Command: 01 10 21 05 00 02 04 03 E8 FC 18 66 BB(CRC-16)

Response: 01 10 21 05 00 02 5B F5(CRC-16)

4-4-3 Variable Write, Single/Operation Command

This function performs operations such as writing to the variable area (single) and operation commands
(communications writing, RUN/STOP, multi-SP, AT execute/cancel, write mode, save RAM data, soft-
ware reset, move to setup area 1, move to protect level, auto/manual switch, initialize settings, alarm
latch cancel, invert direct/reverse operation, program start, and SP mode.)
Writing is enabled in only the 2-byte mode.

Command Frame
Slave Function Write variable Write data CRC-16
address code address

H'06

1 1 2 2 2 bytes

Response Frame
Slave Function Write variable CRC-16
address code address Write data

H'06

1 1 2 2 2 bytes
(1) Write variable address
Specify the address of the setting data that is to be written. For details on addresses, refer
to Section 5 Modbus Communications Procedure.
For an operation command, specify 0000 or FFFF.

4 - 12 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

(2) Command Code and Related Information

Command
Command content Related information
code
00 Communications writing 00: OFF (disabled)
01: ON (enabled)

4-4 Detailed Description of the Functions

01 RUN/STOP 00: Run
01: Stop
02 Multi-SP 00: Set point 0
01: Set point 1
02: Set point 2
03: Set point 3
04: Set point 4
05: Set point 5
06: Set point 6
07: Set point 7
03 AT execute/cancel 00: AT cancel
01: 100% AT execute
02: 40% AT execute
04 Write mode 00: Backup
01: RAM write mode 4
05 Save RAM data 00
06 Software reset 00

4-4-3 Variable Write, Single/Operation Command

07 Move to setup area 1 00
08 Move to protect level 00
09 Auto/manual switch 00: Automatic mode
01: Manual mode
0B Parameter initialization 00
0C Alarm latch cancel 00: Alarm 1 latch cancel
01: Alarm 2 latch cancel
02: Alarm 3 latch cancel
03: HB alarm latch cancel
04: HS alarm latch cancel
05: Alarm 4 latch cancel
0F: All alarm latch cancel
0D SP Mode 00: Local SP Mode
01: Remote SP Mode
0E Invert direct/reverse operation 00: Not invert
01: Invert
11 Program start 00: Reset
01: Start

E5@C Digital Temperature Controllers Communications Manual (H175) 4 - 13

4 Modbus Communications Procedure

(3) Response Code

• Normal Completion

Function code Error code Name Description

H'06 --- Normal No errors were found.
completion
• Error Occurred

Error
Function code Name Description
code
H'86 H'02 Variable The write variable address is incorrect.
address error
H'03 Variable data The write data is incorrect.
error • The write data is out of the setting range.
• Command code or related information are
incorrect.
H'04 Operation The Controller cannot write the data in its
error present operating status.
• The Communications Writing parameter is set
to “OFF” (disabled). The command is received
regardless of the Communications Writing
parameter setting (ON/OFF).
• Attempted to write to a parameter in setup
area 1 from setup area 0.
• Attempted to write to a protect parameter from
other than the protect level.
• AT execution is in progress.
• The command cannot be processed. For
details, refer to (5) Operation Commands and
Precautions following this table.
Note: For details on variable writing, refer to4-4-2 Variable Write, Multiple. For details on AT,
refer to the E5@C Digital Temperature Controllers User's Manual Basic Type (Cat. No.
H174).

(4) Example Command and Response

The following example shows the command/response for a Stop command. (In this case,
the slave address is H'01.)
Stop command (command code: 01; related information: 01)
• Address: H'0000 (fixed)
Write data: H'0101 (Run/Stop, Stop command)

Command: 01 06 00 00 01 01 49 9A(CRC-16)

Response: 01 06 00 00 01 01 49 9A(CRC-16)

(5) Operation Commands and Precautions

This information is the same as that for CompoWay/F. Refer to page 2-17.

4 - 14 E5@C Digital Temperature Controllers Communications Manual (H175)

 4 Modbus Communications Procedure

4-4-4 Echoback Test

Command Frame
Slave Function CRC-16
Test data

4-4 Detailed Description of the Functions

address code Fixed data

H'08 H'00 H'00

1 1 2 2 2 bytes

Response Frame
Slave Function CRC-16
address code Fixed data Test data

H'08 H'00 H'00

1 1 2 2 bytes
2
Note: When the command is executed normally, the response returns the same data sent in the command.

(1) Test Data

4
Enter any 2-byte hexadecimal data.

4-4-4 Echoback Test

(2) Response Code

Error
Function code Name Description
code
H'88 H'03 Variable data error A different value (not H'00, H'00) was
returned.
H'08 --- Normal completion No errors were found.

(3) Example Command and Response

The following example shows the command/response for an Echoback Test command.
(In this case, the test data is H'1234.)
(In this case, the slave address is H'01.)

Command: 01 08 00 00 12 34 ED 7C(CRC-16)

Response: 01 08 00 00 12 34 ED 7C(CRC-16)

E5@C Digital Temperature Controllers Communications Manual (H175) 4 - 15

4 Modbus Communications Procedure

4 - 16 E5@C Digital Temperature Controllers Communications Manual (H175)

 Communications Data for Modbus
This section lists the details of the communications data in the Modbus
communications protocol.

5-1 Variable Area (Setting Range) List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5

5-2 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

E5@C Digital Temperature Controllers Communications Manual (H175) 5-1

5 Communications Data for Modbus

5-1 Variable Area (Setting Range) List

• Four-byte Mode
One element uses 4 bytes of data (H'00000000 to H'FFFFFFFF), so specify two-element units.
Reading and writing in 4-byte units is executed by specifying an even address and specifying the
number of elements in multiples of 2.
• Two-byte Mode
One element uses 2 bytes of data (H'0000 to H'FFFF), so specify one-element units. Reading and
writing in 2-byte data units is executed by specifying 1-element units.

The following table lists the variable area. Items expressed in hexadecimal in the "Setting (monitor)
value" column are the setting range in the Modbus specifications. Values in parentheses "()" are the
actual setting range.
When there is a section reference for a setting item, refer to that reference for details.

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0000 2000 PV Temperature: Use the specified range for each sensor. Operation
Analog: Scaling lower limit − 5% FS to Scaling upper limit + 5% FS
0002 2001 Status*1*2 Refer to 5-2 Status for details.
0004 2002 Internal Set Point *1 SP lower limit to SP upper limit
0006 2003 Heater Current 1 Value H'00000000 to H'00000226 (0.0 to 55.0)
Monitor
0008 2004 MV Monitor (Heating) Standard: H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling: H'00000000 to H'0000041A (0.0 to 105.0)
000A 2005 MV Monitor (Cooling) H'00000000 to H'0000041A (0.0 to 105.0)
0106 2103 Set Point SP lower limit to SP upper limit
0108 2104 Alarm Value 1 H'FFFFF831 to H'0000270F (−1999 to 9999)
010A 2105 Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
1
010C 2106 Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
1
010E 2107 Alarm Value 2 H'FFFFF831 to H'0000270F (−1999 to 9999)
0110 2108 Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
2
0112 2109 Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
2
0404 2402 PV Temperature: Use the specified range for each sensor.
Analog: Scaling lower limit − 5% FS to Scaling upper limit + 5% FS
0406 2403 Internal Set Point*1 SP lower limit to SP upper limit
0408 2404 Multi-SP No. Monitor H'00000000 to H'00000007 (0 to 7)
040C 2406 Status*1*2 Refer to 5-2 Status for details.
040E 2407 Status*3 Refer to 5-2 Status for details.
0410 2408 Status 2 *1*2 Refer to 5-2 Status for details.
0412 2409 Status 2*1*3 Refer to 5-2 Status for details.
0420 2410 Decimal Point Monitor H'00000000 to H'00000003 (0 to 3)
*1 Not displayed on the Controller display.
*2 In 2-byte mode, the rightmost 16 bits are read.
*3 In 2-byte mode, the leftmost 16 bits are read.

5-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0500 2500 Operation/Adjustment H'00000000 (0): No restrictions in operation and adjustment levels Protect
Protect H'00000001 (1): Move to adjustment level is prohibited.
H'00000002 (2): Display and change of only “PV” and “PV/SP”
parameters is allowed.
H'00000003 (3): Display of only “PV” and “PV/SP” parameters is
allowed.
0502 2501 Initial H'00000000 (0): Move to initial setting/communications setting
Setting/Communications level is allowed. (Move to advanced function

5-1 Variable Area (Setting Range) List

Protect setting level is displayed.)
H'00000001 (1): Move to initial setting/communications setting
level is allowed. (Move to advanced function
setting level is not displayed.)
H'00000002 (2): Move to initial setting/communications setting
level is prohibited.
0504 2502 Setting Change Protect H'00000000 (0): OFF (Changing of setup on controller display is
allowed.)
H'00000001 (1): ON (Changing of setup on controller display is
prohibited.)
0506 2503 PF Key Protect H'00000000 (0): OFF
H'00000001 (1): ON
0508 2504 Move to Protect Level H'FFFFF831 to H'0000270F (−1999 to 9999)
050A 2505 Password to Move to H'FFFFF831 to H'0000270F (−1999 to 9999)
Protect Level (Can only be set. The monitor value is always H’00000000.)
050C 2506 Parameter Mask Enable H'00000000 (0): OFF
H'00000001 (1): ON 5
050E 2507 Changed Parameters H'00000000 (0): OFF
Only H'00000001 (1): ON
0600 2600 Manual MV Standard Models Manual
Standard control: control
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control:
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
Position-proportional Models
Close position-proportional control with the Direct Setting of
Position Proportional MV parameter set to ON:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
0602 2601 Set Point SP lower limit to SP upper limit Operation
0604 2602 Remote SP Monitor Remote SP lower limit −10% FS to Remote SP upper limit +10% FS
0608 2604 Heater Current 1 Value H'00000000 to H'00000226 (0.0 to 55.0)
Monitor
060A 2605 MV Monitor (Heating) Standard control: H'FFFFFFCE to H'0000041A
(−5.0 to 105.0)
Heating and cooling control: H'00000000 to H'0000041A
(0.0 to 105.0)
060C 2606 MV Monitor (Cooling) H'00000000 to H'0000041A (0.0 to 105.0)
060E 2607 Valve Opening Monitor H'FFFFFF9C to H'0000044C (−10.0 to 110.0)

E5@C Digital Temperature Controllers Communications Manual (H175) 5-3

5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0702 2701 Proportional Band H'00000001 to H'0000270F (0.1 to 999.9) Adjustment
(Cooling)
0704 2702 Integral Time (Cooling) H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
0706 2703 Derivative Time (Cooling) H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
0708 2704 Dead Band H'FFFFF831 to H'0000270F
(−199.9 to 999.9 for temperature input)
(−19.99 to 99.99 for analog input)
070A 2705 Manual Reset Value H'00000000 to H'000003E8 (0.0 to 100.0)
070C 2706 Hysteresis (Heating) H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
070E 2707 Hysteresis (Cooling) H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
0710 2708 Control Period (Heating) H'FFFFFFFE (−2): 0.1 s Initial setting
H'FFFFFFFF (−1): 0.2 s
H'00000000 (0): 0.5 s
H'00000001 to H'00000063 (1 to 99)
0712 2709 Control Period (Cooling) H'FFFFFFFE (−2): 0.1 s
H'FFFFFFFF (−1): 0.2 s
H'00000000 (0): 0.5 s
H'00000001 to H'00000063 (1 to 99)
0714 270A Position Proportional H'00000001 to H'00000064 (0.1 to 10.0) Adjustment
Dead Band
0716 270B Open/Close Hysteresis H'00000001 to H'000000C8 (0.1 to 20.0)
0718 270C SP Ramp Time Unit H'00000000 (0): EU/second Advanced
H'00000001 (1): EU/minute function
H'00000002 (2): EU/hour setting
071A 270D SP Ramp Set Value H'00000000 (0): OFF Adjustment
H'00000001 to H'0000270F (1 to 9999)
071C 270E SP Ramp Fall Value H'FFFFFFFF (−1): Same (Same as SP Ramp Set Value.)
H'00000000 (0): OFF
H'00000001 to H'0000270F (1 to 9999)
071E 270F MV at Stop Standard Models
0722 2711 MV at PV Error Standard control:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control:
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
Position-proportional Models
Close position-proportional control with the Direct Setting of
Position Proportional MV parameter set to ON:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Floating position-proportional control or the Direct Setting of
Position Proportional MV parameter set to OFF:
H'FFFFFFFF to H'00000001 (−1 to 1)
0726 2713 MV Change Rate Limit H'00000000 to H'000003E8 (0.0 to 100.0)
0730 2718 PV Input Slope H'00000001 to H'0000270F (0.001 to 9.999)
Coefficient
0734 271A Heater Current 1 Value H'00000000 to H'00000226 (0.0 to 55.0) Operation
Monitor
0736 271B Heater Burnout Detection H'00000000 to H'000001F4 (0.0 to 50.0) Adjustment
1
0738 271C Leakage Current 1 H'00000000 to H'00000226 (0.0 to 55.0) Operation
Monitor
073A 271D HS Alarm 1 H'00000000 to H'000001F4 (0.0 to 50.0) Adjustment
0746 2723 Process Value Input Shift H'FFFFF831 to H'0000270F (−1999 to 9999)
0748 2724 Heater Current 2 Value H'00000000 to H'00000226 (0.0 to 55.0) Operation
Monitor

5-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
074A 2725 Heater Burnout Detection H'00000000 to H'000001F4 (0.0 to 50.0) Adjustment
2
074C 2726 Leakage Current 2 H'00000000 to H'00000226 (0.0 to 55.0) Operation
Monitor
074E 2727 HS Alarm 2 H'00000000 to H'000001F4 (0.0 to 50.0) Adjustment
0750 2728 Soak Time Remain H'00000000 to H'0000270F (0 to 9999) Operation
0752 2729 Soak Time H'00000001 to H'0000270F (1 to 9999) Adjustment
0754 272A Wait Band H'00000000 (0): OFF

5-1 Variable Area (Setting Range) List

H'00000001 to H'0000270F
(0.1 to 999.9 for Temperature input)
(0.01 to 99.99 for Analog input)
0756 272B Remote SP Input Shift H'FFFFF831 to H'0000270F (−1999 to 9999)
0758 272C Remote SP input Slope H'00000001 to H'0000270F (0.001 to 9.999)
Coefficient
0800 2800 Input Digital Filter H'00000000 to H'0000270F (0.0 to 999.9) Advanced
0808 2804 Moving Average Count H'00000000 (0): OFF function
H'00000001 (1): 2 times setting
H'00000002 (2): 4 times
H'00000003 (3): 8 times
H'00000004 (4): 16 times
H'00000005 (5): 32 times

E5@C Digital Temperature Controllers Communications Manual (H175) 5-5

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0810 2808 Extraction of Square Root H'00000000 to H'000003E8 (0.0 to 100.0) Adjustment
Low-cut Point
0900 2900 SP 0 SP lower limit to SP upper limit
0904 2902 Alarm Value 1 H'FFFFF831 to H'0000270F (−1999 to 9999) Operation
0906 2903 Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
1
0908 2904 Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
1
090A 2905 Alarm Value 2 H'FFFFF831 to H'0000270F (−1999 to 9999)
090C 2906 Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
2
090E 2907 Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
2
0910 2908 Alarm Value 3 H'FFFFF831 to H'0000270F (−1999 to 9999)
0912 2909 Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
3
0914 290A Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
3
0916 290B Alarm Value 4 H'FFFFF831 to H'0000270F (−1999 to 9999)
0918 290C Alarm Value Upper Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
4
091A 290D Alarm Value Lower Limit H'FFFFF831 to H'0000270F (−1999 to 9999)
4
091C 290E SP 1 SP lower limit to SP upper limit Adjustment
0938 291C SP 2 SP lower limit to SP upper limit
0954 292A SP 3 SP lower limit to SP upper limit
0970 2938 SP 4 SP lower limit to SP upper limit
098C 2946 SP 5 SP lower limit to SP upper limit
09A8 2954 SP 6 SP lower limit to SP upper limit
09C4 2962 SP 7 SP lower limit to SP upper limit
0A00 2A00 Proportional Band H'00000001 to H'0000270F (0.1 to 999.9)
0A02 2A01 Integral Time Standard, heating/cooling, or close position proportional control:
H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
Floating position-proportional control:
H'00000001 to H'0000270F
(1 to 9999: Integral/derivative time unit is 1 s.)
(0.1 to 999.9: Integral/derivative time unit is 0.1 s.)
0A04 2A02 Derivative Time H'00000000 to H'0000270F
(0 to 9999: Integral/derivative time unit is 1 s.)
(0.0 to 999.9: Integral/derivative time unit is 0.1 s.)
0A0A 2A05 MV Upper Limit Standard control or close position-proportional control:
MV lower limit + 0.1 to H'0000041A
(MV lower limit + 0.1 to 105.0)
Heating and cooling control:
H'00000000 to H'0000041A (0.0 to 105.0)
0A0C 2A06 MV Lower Limit Standard control or close position-proportional control:
H'FFFFFFCE to MV upper limit −0.1 (−5.0 to MV upper limit −0.1)
Heating and cooling control:
H'FFFFFBE6 to H'00000000 (−105.0 to 0.0)
Note: The alarm function can also be used in Digital Controllers without auxiliary output terminals. In this case, confirm alarm
occurrences via the status data.

5-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0C00 2C00 Input Type H'00000000 (0): Pt (−200 to 850°C/−300 to 1500°F) Initial setting
H'00000001 (1): Pt (−199.9 to 500.0°C/−199.9 to 900.0°F)
H'00000002 (2): Pt (0.0 to 100.0°C/0.0 to 210.0°F)
H'00000003 (3): JPt (−199.9 to 500.0°C/−199.9 to 900.0°F)
H'00000004 (4): JPt (0.0 to 100.0°C/0.0 to 210.0°F)
H'00000005 (5): K (−200 to 1300°C/−300 to 2300°F)
H'00000006 (6): K (−20.0 to 500.0°C/0.0 to 900.0°F)
H'00000007 (7): J (−100 to 850°C/−100 to 1500°F)

5-1 Variable Area (Setting Range) List

H'00000008 (8): J (−20.0 to 400.0°C/0.0 to 750.0°F)
H'00000009 (9): T (−200 to 400°C/−300 to 700°F)
H'0000000A (10): T (−199.9 to 400.0°C/−199.9 to 700.0°F)
H'0000000B (11): E (−200 to 600°C/−300 to 1100°F)
H'0000000C (12): L (−100 to 850°C/−100 to 1500°F)
H'0000000D (13): U (−200 to 400°C/−300 to 700°F)
H'0000000E (14): U (−199.9 to 400.0°C/−199.9 to 700.0°F)
H'0000000F (15): N (−200 to 1300°C/−300 to 2300°F)
H'00000010 (16): R (0 to 1700°C/0 to 3000°F)
H'00000011 (17): S (0 to 1700°C/0 to 3000°F)
H'00000012 (18): B (100 to 1800°C/300 to 3200°F)
H'00000013 (19): W (0 to 2,300°C/0 to 3,200°F)
H'00000014 (20): PLII (0 to 1,300°C/0 to 2,300°F)
H'00000015 (21): Infrared temperature sensor (K 140°F/60°C)
H'00000016 (22): Infrared temperature sensor (K 240°F/120°C)
H'00000017 (23): Infrared temperature sensor (K 280°F/140°C)
H'00000018 (24): Infrared temperature sensor (K 440°F/220°C)
H'00000019 (25): 4 to 20 mA 5
H'0000001A (26): 0 to 20 mA
H'0000001B (27): 1 to 5 V
H'0000001C (28): 0 to 5 V
H'0000001D (29): 0 to 10 V
0C02 2C01 Temperature Unit H'00000000 (0): °C
H'00000001 (1): °F
0C12 2C09 Scaling Lower Limit H’FFFFF831 to scaling upper limit −1
(−1999 to scaling upper limit −1)
0C16 2C0B Scaling Upper Limit Scaling lower limit + 1 to H'0000270F
(Scaling lower limit + 1 to 9999)
0C18 2C0C Decimal Point H'00000000 to 00000003 (0 to 3)
0C1A 2C0D Remote SP Upper limit Input range lower limit to Input range upper limit for temperature input Advanced
Scaling lower limit to Scaling upper limit for analog input function
0C1C 2C0E Remote SP Lower limit Input range lower limit to Input range upper limit for temperature input setting
Scaling lower limit to Scaling upper limit for analog input
0C1E 2C0F PV Decimal Point Display H'00000000 (0): OFF
H'00000001 (1): ON
0D06 2D03 Control Output 1 Signal H'00000000 (0): 4 to 20 mA Initial setting
H'00000001 (1): 0 to 20 mA
0D08 2D04 Control Output 2 Signal H'00000000 (0): 4 to 20 mA
H'00000001 (1): 0 to 20 mA
0D1E 2D0F SP Upper Limit The range of values (without decimal point) is as follows:
Temperature input: SP lower limit + 1 to Input range upper limit
Analog input: SP lower limit + 1 to Scaling upper limit
0D20 2D10 SP Lower Limit The range of values (without decimal point) is as follows:
Temperature input: Input range lower limit to SP upper limit − 1
Analog input: Scaling lower limit to SP upper limit − 1
0D22 2D11 Standard or Heat- H'00000000 (0): Standard
ing/Cooling H'00000001 (1): Heating and cooling

E5@C Digital Temperature Controllers Communications Manual (H175) 5-7

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0D24 2D12 Direct/Reverse Operation H'00000000 (0): Reverse operation Initial setting
H'00000001 (1): Direct operation
0D26 2D13 Close/Floating H'00000000 (0): Floating
H'00000001 (1): Close
0D28 2D14 PID ON/OFF H'00000000 (0): ON/OFF
H'00000001 (1): 2 PID control
0D2A 2D15 ST H'00000000 (0): OFF
H'00000001 (1): ON
0D2C 2D16 Program Pattern H'00000000 (0): OFF
H'00000001 (1): STOP
H'00000002 (2): CONT
0D30 2D18 Remote SP Input H'00000000 (0): 4 to 20 mA Advanced
H'00000001 (1): 0 to 20 mA function
H'00000002 (2): 1 to 5 V setting
H'00000003 (3): 0 to 5 V
H'00000004 (4): 0 to 10 V
0D32 2D19 Minimum Output ON/OFF H'00000000 to H'000001F4 (0.0 to 50.0)
Band
0E00 2E00 Transfer Output Type H'00000000 (0): OFF Initial setting
H'00000001 (1): Set point
H'00000002 (2): Set point during SP ramp
H'00000003 (3): PV
H'00000004 (4): MV (heating)
H'00000005 (5): MV (cooling)
H'00000006 (6): Valve opening (*Only for Position-proportional
Models.)
0E02 2E01 Transfer Output Signal H'00000000 (0): 4 to 20 mA
H'00000001 (1): 1 to 5 V
0E0C 2E06 Control Output 1 Assign- Control output 1 is a relay output or voltage output (for driving SSR): Advanced
ment H'00000000 (0): Not assigned. function
H'00000001 (1): Control output (heating) setting
H'00000002 (2): Control output (cooling)
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'00000006 (6): Alarm 4
H'00000007 (7): Heater alarm
H'00000008 (8): HB alarm
H'00000009 (9): HS alarm
H'0000000A (10): Input error
H'0000000B (11): RSP input error
H'0000000C (12): Program end output*
H'0000000D (13): RUN output
H'0000000E (14): Integrated alarm
H'0000000F (15): Work bit 1
H'00000010 (16): Work bit 2
H'00000011 (17): Work bit 3
H'00000012 (18): Work bit 4
H'00000013 (19): Work bit 5
H'00000014 (20): Work bit 6
H'00000015 (21): Work bit 7
H'00000016 (22): Work bit 8
When control output 1 is a current output:
H'00000000 (0): Not assigned.
H'00000001 (1): Control output (heating)
H'00000002 (2): Control output (cooling)
0E0E 2E07 Control Output 2 Assign- Control output 2 is a relay output or voltage output (for driving SSR):
ment H'00000000 to H'0000006 (0 to 22)
Note: Same as for the Control Output 1 Assignment parameter.
When control output 2 is a current output:
H'00000000 to H'00000002 (0 to 2)
Note: Same as for the Control Output 1 Assignment parameter.
* P.END (program end output) can be set even when the program pattern is set to OFF, but the function will be disabled.

5-8 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0E14 2E0A Event Input Assignment 1 H'00000000 (0): None Initial setting
H'00000001 (1): RUN/STOP
H'00000002 (2): Auto/Manual Switch
H'00000003 (3): Program Start*1
H'00000004 (4): Direct/Reverse Operation
H'00000005 (5): SP Mode Switch
Note: Valid only with a remote SP input.
H'00000006 (6): 100% AT Execute/Cancel

5-1 Variable Area (Setting Range) List

H'00000007 (7): 40% AT Execute/Cancel
H'00000008 (8): Setting Change Enable/Disable
H'00000009 (9): Communications Writing Enable/Disable
Note: Valid only with external communications.
H'0000000A (10): Alarm Latch Cancel
H'0000000B (11): Multi-SP No. Switch, Bit 0
H'0000000C (12): Multi-SP No. Switch, Bit 1
H'0000000D (13): Multi-SP No. Switch, Bit 2
0E16 2E0B Event Input Assignment 2 H'00000000 to H'0000000D (0 to 13)
Note: Same as for Event Input Assignment 1.
0E18 2E0C Event Input Assignment 3 H'00000000 to H'0000000D (0 to 13)
Note: Same as for Event Input Assignment 1.
0E1A 2E0D Event Input Assignment 4 H'00000000 to H'0000000D (0 to 13)
Note: Same as for Event Input Assignment 1.
0E1C 2E0E Event Input Assignment 5 H'00000000 to H'0000000D (0 to 13)
Note: Same as for Event Input Assignment 1.
0E1E 2E0F Event Input Assignment 6 H'00000000 to H'0000000D (0 to 13)
5
Note: Same as for Event Input Assignment 1.
0E20 2E10 Auxiliary Output 1 H'00000000 (0): Not assigned. Advanced
Assignment H'00000001 (1): Control output (heating) function
H'00000002 (2): Control output (cooling) setting
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'00000006 (6): Alarm 4
H'00000007 (7): Heater alarm
H'00000008 (8): HB alarm
H'00000009 (9): HS alarm
H'0000000A (10): Input error
H'0000000B (11): RSP input error
H'0000000C (12): Program end output
H'0000000D (13): RUN output
H'0000000E (14): Integrated alarm
H'0000000F (15): Work bit 1
H'00000010 (16): Work bit 2
H'00000011 (17): Work bit 3
H'00000012 (18): Work bit 4
H'00000013 (19): Work bit 5
H'00000014 (20): Work bit 6
H'00000015 (21): Work bit 7
H'00000016 (22): Work bit 8
0E22 2E11 Auxiliary Output 2 H'00000000 to H'00000016 (0 to 22)
Assignment Note: Same as for the Auxiliary Output 1 Assignment parameter.
0E24 2E12 Auxiliary Output 3 H'00000000 to H'00000016 (0 to 22)
Assignment Note: Same as for the Auxiliary Output 1 Assignment parameter.
0E26 2E13 Auxiliary Output 4 H'00000000 to H'00000016 (0 to 22)
Assignment Note: Same as for the Auxiliary Output 1 Assignment parameter.
0E28 2E14 Transfer Output Upper H'FFFFF831 to H'0000270F (−1999 to 9999) *2 Initial setting
Limit
0E2A 2E15 Transfer Output Lower H'FFFFF831 to H'0000270F (−1999 to 9999) *2
Limit

*1 PRST (program start) can be set even when the program pattern is set to OFF, but the function will be disabled.
*2 The setting (monitor) range depends on the transfer output type setting. Refer to Section 6 Parameters in the E5@C
Digital Temperature Controller User’s Manual (Cat. No. H174).
*3 P.END (program end output) can be set even when the program pattern is set to OFF, but the function will be disabled.

E5@C Digital Temperature Controllers Communications Manual (H175) 5-9

5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0E48 2E24 Extraction of Square Root H'00000000 (0): OFF Initial setting
Enable H'00000001 (1): ON
0E60 2E30 Travel Time H'00000001 to H'000003E7 (1 to 999)
0F00 2F00 Alarm 1 Type H'00000000 (0): Alarm function OFF
H'00000001 (1): Upper and lower-limit alarm
H'00000002 (2): Upper-limit alarm
H'00000003 (3): Lower-limit alarm
H'00000004 (4): Upper and lower-limit range alarm
H'00000005 (5): Upper and lower-limit alarm with standby sequence
H'00000006 (6): Upper-limit alarm with standby sequence
H'00000007 (7): Lower-limit alarm with standby sequence
H'00000008 (8): Absolute-value upper-limit alarm
H'00000009 (9): Absolute-value lower-limit alarm
H'0000000A (10): Absolute-value upper-limit alarm with standby
sequence
H'0000000B (11): Absolute-value lower-limit alarm with standby
sequence
H'0000000C (12): LBA (Loop Burnout Alarm)
H'0000000D (13): PV change rate alarm
H'0000000E (14): SP absolute-value upper-limit alarm
H'0000000F (15): SP absolute-value lower-limit alarm
H'00000010 (16): MV absolute-value upper-limit alarm
H'00000011 (17): MV absolute-value lower-limit alarm
H'00000012 (18): RSP absolute-value upper-limit alarm *
H'00000013 (19): RSP absolute-value lower-limit alarm *
* Valid only with a remote SP input.
0F02 2F01 Alarm 1 Latch H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
setting
0F04 2F02 Alarm 1 Hysteresis H'00000001 to H'0000270F Initial setting
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
0F06 2F03 Alarm 2 Type H'00000000 to H'00000013 (0 to 19)
Note: Same settings as the Alarm 1 Type. However, the LBA (loop
burnout alarm) cannot be set.
0F08 2F04 Alarm 2 Latch H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
setting
0F0A 2F05 Alarm 2 Hysteresis H'00000001 to H'0000270F Initial setting
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
0F0C 2F06 Alarm 3 Type H'00000000 to H'00000013 (0 to 19)
Note: Same settings as the Alarm 1 Type. However, the LBA (loop
burnout alarm) cannot be set.
0F0E 2F07 Alarm 3 Latch H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
setting
0F10 2F08 Alarm 3 Hysteresis H'00000001 to H'0000270F Initial setting
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
0F12 2F09 Alarm 4 Type H'00000000 to H'00000013 (0 to 19)
Note: Same settings as the Alarm 1 Type. However, the LBA (loop
burnout alarm) cannot be set.
0F14 2F0A Alarm 4 Latch H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
setting
0F16 2F0B Alarm 4 Hysteresis H'00000001 to H'0000270F Initial setting
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
0F18 2F0C Standby Sequence Reset H'00000000 (0): Condition A Advanced
H'00000001 (1): Condition B function
0F1A 2F0D Auxiliary Output 1 Open H'00000000 (0): Close in alarm setting
in Alarm H'00000001 (1): Open in alarm

5 - 10 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
0F1C 2F0E Auxiliary Output 2 Open H'00000000 (0): Close in alarm Advanced
in Alarm H'00000001 (1): Open in alarm function
0F1E 2F0F Auxiliary Output 3 Open H'00000000 (0): Close in alarm setting
in Alarm H'00000001 (1): Open in alarm
0F20 2F10 Auxiliary Output 4 Open H'00000000 (0): Close in alarm
in Alarm H'00000001 (1): Open in alarm
0F22 2F11 Alarm 1 ON delay H'00000000 to H'000003E7 (0 to 999)
0F24 2F12 Alarm 2 ON delay H'00000000 to H'000003E7 (0 to 999)

5-1 Variable Area (Setting Range) List

0F26 2F13 Alarm 3 ON delay H'00000000 to H'000003E7 (0 to 999)
0F28 2F14 Alarm 4 ON delay H'00000000 to H'000003E7 (0 to 999)
0F2A 2F15 Alarm 1 OFF delay H'00000000 to H'000003E7 (0 to 999)
0F2C 2F16 Alarm 2 OFF delay H'00000000 to H'000003E7 (0 to 999)
0F2E 2F17 Alarm 3 OFF delay H'00000000 to H'000003E7 (0 to 999)
0F30 2F18 Alarm 4 OFF delay H'00000000 to H'000003E7 (0 to 999)
1000 3000 PV/SP No. 1 Display H'00000000 (0):Nothing displayed.
Selection H'00000001 (1):PV/SP
H'00000002 (2):PV
H'00000003 (3):PV/SP (character display)
H'00000004 (4):PV/SP/MV
H'00000005 (5):PV/SP/Multi-SP No.
H'00000006 (6):PV/SP/Soak time remain
H'00000007 (7):PV/SP/Ramp SP
H'00000008 (8):PV/SP/Alarm value 1
1002 3001 MV Display Selection H'00000000 (0): MV (heating) 5
H'00000001 (1): MV (cooling)
1006 3003 Automatic Display Return H'00000000 (0): OFF
Time H'00000001 to H'00000063 (1 to 99)
1008 3004 Display Refresh Period H'00000000 (0):OFF
H'00000001 (1): 0.25
H'00000002 (2): 0.5
H'00000003 (3): 1.0
1010 3008 PV/SP No. 2 Display H'00000000 to H'00000008 (0 to 8)
Selection Note: Same as PV/SP No. 1 Display Selection.
1014 300A Display Brightness H'00000001 to H'00000003 (1 to 3)
1016 300B MV Display H'00000000 (0): OFF
H'00000001 (1): ON
1018 300C Move to Protect Level H'00000001 to H'0000001E (1 to 30)
Time
101E 300F Auto/Manual Select H'00000000 (0): OFF
Addition H'00000001 (1): ON
1022 3011 PV Status Display H'00000000 (0): OFF
Function H'00000001 (1): Manual
H'00000002 (2): Stop
H'00000003 (3): Alarm 1
H'00000004 (4): Alarm 2
H'00000005 (5): Alarm 3
H'00000006 (6): Alarm 4
H'00000007 (7): Alarm 1 to 4 OR status
H'00000008 (8): Heater alarm
1024 3012 SV Status Display H'00000000 to H'00000008 (0 to 8)
Function Note: Same as for PV Status Display Function.

E5@C Digital Temperature Controllers Communications Manual (H175) 5 - 11

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
1100 3100 Protocol Setting (See H'00000000 (0): CompoWay/F Communicat
note.) H'00000001 (1): Modbus ions setting
1102 3101 Communications Unit No. H'00000000 to H'00000063 (0 to 99)
*
1104 3102 Communications Baud H'00000003 (3): 9.6
Rate * H'00000004 (4): 19.2
H'00000005 (5): 38.4
H'00000006 (6): 57.6
1106 3103 Communications Data H'00000007 (7): 7
Length * H'00000008 (8): 8
1108 3104 Communications Stop H'00000001 (1): 1
Bits * H'00000002 (2): 2
110A 3105 Communications Parity * H'00000000 (0): None
H'00000001 (1): Even
H'00000002 (2): Odd
110C 3106 Send Data Wait Time * H'00000000 to H'00000063 (0 to 99)
1200 3200 PF Setting H'00000000 (0): Disabled Advanced
H'00000001 (1): Run function
H'00000002 (2): Stop setting
H'00000003 (3): RUN/STOP
H'00000004 (4): 100% AT execute/cancel
H'00000005 (5): 40% AT execute/cancel
H'00000006 (6): Alarm latch cancel
H'00000007 (7): Auto/manual switch
H'00000008 (8): Monitor/setting item
H'00000009 (9): Digit shift key
1204 3202 Monitor/Setting Item 1 H'00000000 (0): Disabled
H'00000001 (1): PV/SP/multi-SP
H'00000002 (2): PV/SP/MV
H'00000003 (3): PV/SP/soak time remain
H'00000004 (4): Proportional band
H'00000005 (5): Integral time
H'00000006 (6): Derivative time
H'00000007 (7): Alarm value 1
H'00000008 (8): Alarm value upper limit 1
H'00000009 (9): Alarm value lower limit 1
H'0000000A (10): Alarm value 2
H'0000000B (11): Alarm value upper limit 2
H'0000000C (12): Alarm value lower limit 2
H'0000000D (13): Alarm value 3
H'0000000E (14): Alarm value upper limit 3
H'0000000F (15): Alarm value lower limit 3
H'00000010 (16): Alarm value 4
H'00000011 (17): Alarm value upper limit 4
H'00000012 (18): Alarm value lower limit 4
H'00000013 (19): PV/SP/Internal set point
H'00000014 (20): PV/SP/Alarm value 1
H'000000015 (21): Proportional Band (Cooling)
H'000000016 (22): Integral Time (Cooling)
H'000000017 (23): Derivative Time (Cooling)
1206 3203 Monitor/Setting Item 2 H'00000000 to H'00000017 (0 to 23)
Note: Same as for Monitor/Setting Item 1.
1208 3204 Monitor/Setting Item 3 H'00000000 to H'00000017 (0 to 23)
Note: Same as for Monitor/Setting Item 1.
120A 3205 Monitor/Setting Item 4 H'00000000 to H'00000017 (0 to 23)
Note: Same as for Monitor/Setting Item 1.
120C 3206 Monitor/Setting Item 5 H'00000000 to H'00000017 (0 to 23)
Note: Same as for Monitor/Setting Item 1.
* After communications parameters have been changed, reset the Digital Controller to enable them.

5 - 12 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
1302 3301 SP Tracking H'00000000 (0): OFF Advanced
H'00000001 (1): ON function
1308 3304 PV Dead Band H'00000000 to H'0000270F (0 to 9999) setting
130A 3305 Cold Junction H'00000000 (0): OFF
Compensation Method H'00000001 (1): ON
1312 3309 Integral/Derivative Time H'00000000 (0): 1 s
Unit H'00000001 (1): 0.1 s

5-1 Variable Area (Setting Range) List

1314 330A α H'00000000 to H'00000064 (0.00 to 1.00)
1318 330C Manual Output Method H'00000000 (0): HOLD
H'00000001 (1): INIT
131A 330D Manual MV Initial Value Standard control or close position-proportional control:
H'FFFFFFCE to H'0000041A (−5.0 to 105.0)
Heating and cooling control:
H'FFFFFBE6 to H'0000041A (−105.0 to 105.0)
131E 330F AT Calculated Gain H'00000001 to H'00000064 (0.1 to 10.0)
1320 3310 AT Hysteresis H'00000001 to H'0000270F (0.1 to 999.9 for temperature input)
H'00000001 to H'000003E7 (0.01 to 9.99 for analog input)
1322 3311 Limit Cycle MV Amplitude H'00000032 to H'000001F4 (5.0 to 50.0)
1328 3314 Heater Burnout Latch H'00000000 (0): OFF
H'00000001 (1): ON
132A 3315 Heater Burnout H'00000001 to H'000001F4 (0.1 to 50.0)
Hysteresis
132C 3316 HS Alarm Latch H'00000000 (0): OFF 5
H'00000001 (1): ON
132E 3317 HS Alarm Hysteresis H'00000001 to H'000001F4 (0.1 to 50.0)
1336 331B Number of Multi-SP H'00000001 (1): OFF
Points H'00000002 to H'00000008 (1 to 8)
1338 331C HB ON/OFF H'00000000 (0): OFF
H'00000001 (1): ON
133C 331E Integrated Alarm H'00000000 to H'000000FF (0 to 255)
Assignment
1340 3320 MV at Stop and Error H'00000000 (0): OFF
Addition H'00000001 (1): ON
1342 3321 ST Stable Range H'00000001 to H'0000270F (0.1 to 999.9)
1344 3322 RT H'00000000 (0): OFF
H'00000001 (1): ON
Note: Valid only with temperature input.
1346 3323 HS Alarm Use H'00000000 (0): OFF
H'00000001 (1): ON
1348 3324 LBA Detection Time H'00000000 to H'0000270F (0 to 9999)
134A 3325 LBA Level H'00000001 to H'0000270F
(0.1 to 999.9 for temperature input)
(0.01 to 99.99 for analog input)
134C 3326 LBA Band H'00000000 to H'0000270F
(0.0 to 999.9 for temperature input)
(0.00 to 99.99 for analog input)
134E 3327 Soak Time Unit H'00000000 (0): Minutes
H'00000001 (1): Hours
1350 3328 Alarm SP Selection H'00000000 (0): Set point during SP ramp
H'00000001 (1): Set point
1352 3329 Remote SP Enable H'00000000 (0): OFF
H'00000001 (1): ON
1356 332B Manual MV Limit Enable H'00000000 (0): OFF
H'00000001 (1): ON
1358 332C Direct Setting of Position H'00000000 (0): OFF
Proportional MV H'00000001 (1): ON
135A 332D PV Rate of Change H'00000001 to H'000003E7 (1 to 999)
Calculation Period

E5@C Digital Temperature Controllers Communications Manual (H175) 5 - 13

 5 Communications Data for Modbus

Address
Four-byte Two-byte Parameter name Setting (monitor) value Level
mode mode
135C 332E Heating/Cooling Tuning H'00000000 (0): Same as heating control. Advanced
Method H'00000001 (1): Linear function
H'00000002 (2): Air cooling setting
H'00000003 (3): Water cooling
* The logic of the Modbus Write Variable operation command is not affected.

5 - 14 E5@C Digital Temperature Controllers Communications Manual (H175)

 5 Communications Data for Modbus

5-2 Status
The status data for Modbus is the same as that for CompoWay/F. Refer to page 4-11.

5-2 Status
5

E5@C Digital Temperature Controllers Communications Manual (H175) 5 - 15

5 Communications Data for Modbus

5 - 16 E5@C Digital Temperature Controllers Communications Manual (H175)

 Programless Communications
Ver.1.1
This section describes programless communications for the E5@C.

6-1 Programless Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6-1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6-1-2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6-1-3 Operation for Programless Communications . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-1-4 Timing of Turning Power ON and OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6-1-5 Connectable PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6
6-2 E5@C Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-2-1 Protocol Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-2-2 Communications Unit No. and Communications Baud Rate . . . . . . . . . . . . . . . 6-7
6-2-3 Send Data Wait Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-2-4 Highest Communications Unit No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6-2-5 Areas and First Address of Linked Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6-2-6 Receive Data Wait Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-2-7 Communications Node Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-2-8 Upload Settings and Download Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
6-2-9 Copying Parameter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6-2-10 Communications Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6-2-11 Communications Monitor Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
6-3 Controlling Programless Communications . . . . . . . . . . . . . . . . . . . . . . . . 6-17
6-3-1 Controlling Programless Communications with the Request Flag . . . . . . . . . 6-17
6-3-2 Response Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
6-3-3 Range of Operation for Programless Communications . . . . . . . . . . . . . . . . . . 6-19
6-3-4 Operation Command Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
6-3-5 Confirming Operation of Programless Communications . . . . . . . . . . . . . . . . . 6-19
6-3-6 Write Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
6-3-7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
6-4 Connecting to CP-series PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
6-4-1 Configuration and Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21
6-4-2 Switch Settings and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
6-4-3 PLC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22
6-4-4 E5@C Controller Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25
6-4-5 Checking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
6-5 Connecting to CJ-series PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
6-5-1 Configuration and Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
6-5-2 Switch Settings and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
6-5-3 PLC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
6-5-4 E5@C Controller Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
6-5-5 Checking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36

E5@C Digital Temperature Controllers Communications Manual (H175) 6-1

6 Programless Communications

6-6 Connecting to MELSEC Q-series PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37

6-6-1 Configuration and Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-37
6-6-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
6-6-3 PLC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
6-6-4 E5@C Controller Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
6-6-5 Checking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

6-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-1 Programless Communications

6-1-1 Introduction
With programless communications you can read and write E5@C parameters or start and stop the
E5@C from a Programmable Controller (PLC). Communications with the PLC are performed automati-
cally by the E5@C, so there is no need to program communications.
The E5@C automatically reads
and writes PLC memory.

E5CC E5CC E5CC E5CC

No.0 No.1 No.2 No.n

6-1 Programless Communications

C C C C

25 25 25 25
0 0 0 0

PLC

Up to 32 E5@C Controllers on one communications line

6-1-2 Features
• You can connect to an OMRON CS/CJ-series or CP-series PLC or to a Mitsubishi Q-series or
L-series PLC.
6
• Up to 13 E5@C parameters can be assigned for reading and up to 13 E5@C parameters can be
assigned for writing in PLC memory. Each E5@C Controller is allocated 30 words of PLC memory. (A

6-1-1 Introduction
total of 960 words are allocated if 32 E5@C Controllers are connected.)
• You can set the PLC memory area and addresses to use for programless communications.
• You can copy settings between E5@C Controllers to greatly reduce setup work and setting mistakes.
You can change the PLC Up to 13 parameters can be set for reading and
memory area and addresses. up to 13 parameters can be set for writing.

PLC memory
E5CC
PV, status, etc. No.0
No. 0
Upload Area C
Each E5@C Controller
is allocated 30 words.
25
Set point, alarm value, etc. 0
No. 0
Download Area

E5CC
No.1
No. 1
Upload Area C

25
0
No. 1
Download Area

E5CC
No.2
No. 2
Upload Area C

25
0
No. 2
Download Area

Settings can
be copied.

E5@C Digital Temperature Controllers Communications Manual (H175) 6-3

6 Programless Communications

6-1-3 Operation for Programless Communications

Programless communications are performed in the following order of communications unit numbers.
0 (master) → 1 → 2 → ... → Highest communications unit number → 0 → 1...
The master (the Controller with communications unit number 0) starts programless communications
approximately five seconds after the power supply to it is turned ON. (Communications are not per-
formed until the power supply to the master is turned ON.) When the master starts communications, the
slaves (the Controllers with a communications unit number other than 0) also start communications.
After communications have started, they will continue for the remaining E5@C Controllers even if one or
more of them (including the master) stop. However, the communications cycle will increase while wait-
ing for communications from the stopped E5@C Controllers.

6-1-4 Timing of Turning Power ON and OFF

z Turning ON Power
Turn ON the power supply to the E5@C Controllers either after the PLC or at the same time as the
PLC. The following may occur if the power supply is turned ON to the PLC after programless
communications have started.
• The PLC may detect a communications error.
• The Response Flag may change to eeee once at startup.

z Turning OFF Power to Mitsubishi PLCs

To turn OFF the power supply while communications with the PLC are active, change the E5@C
Controller to the initial setting level first, and then turn OFF the power supply. If you turn OFF the
power supply to an E5@C Controller during programless communications, the PLC may detect a
communications error.

z Restarting only the E5@C Controllers

Use the following procedure to restart the E5@C Controllers.

1 Move all of the E5@C Controllers to the initial setting level.

2 Cycle the power supply in order to the slaves (the Controllers with a communications
unit number other than 0) and then to the master (the Controller with a communications
unit number of 0), or change the slaves and then the master back to the operation level.
Note: If the above procedure is not followed and the PLC detects an error, clear the error from the program in the
PLC.

6-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-1-5 Connectable PLCs

The PLCs that can be connected are given below.

SYSMAC CS/CJ-series and CP-series PLCs

Communications ports
Name Model number
Port 1 Port 2
Serial Communications Units CJ1W-SCU21-V1 RS-232C RS-232C
CJ1W-SCU22
CJ1W-SCU41-V1 RS-422A/485
CJ1W-SCU42 (Cannot be used.)
CS1W-SCU21-V1 RS-232C

6-1 Programless Communications

Serial Communications Board CS1W-SCB21-V1 RS-232C RS-232C
CS1W-SCB41-V1 RS-422A/485
(Cannot be used.)
CPU Units CS1/CJ1M CPU Units RS-232C
CJ2 CPU Units RS-232C or option board slot
CP-series CPU Units RS-232C Option board slot
Serial Communications Option Boards * CP1W-CIF11 RS-422A/485
CP1W-CIF12
Note: The CJ1W-CIF11 RS-422A Converter is required to use an RS-232C port.
* The Option Board is mounted in the option board slot that is given above.

MELSEC Q-series and L-series PLCs 6

Communications ports
Name Model number

6-1-5 Connectable PLCs

Port 1 Port 2
Q Corresponding Serial Communication RS-232C RS-422/485
QJ71C24N
Module (Cannot be used.)
QJ71C24N-R4 RS-422/485
L Corresponding Serial Communication RS-232C
LJ71C24
Module (Cannot be used.)

E5@C Digital Temperature Controllers Communications Manual (H175) 6-5

6 Programless Communications

6-2 E5@C Setup

The parameters that are used for programless communications are shown with a gray background in
the following diagram. All of these parameters are displayed if you set the Protocol Setting parameter to
fins or mcp4. (Some of the parameters are always displayed.) The parameters in the communications
setting level are described first, followed by those in the adjustment level.

Power ON Adjustment Level

Press O Key for

less than 1 s. Adjustment Level
l.adj w8of Work Bit 8 OFF Delay
Operation Level 1234
Display 0

M M
25 at AT Execute/Cancel plcm Communications
0
off 1234 Monitor

M M
cmwt Communications
on Writing*
M

Press O Key for Press O Key for

at least 3 s. at least 1 s.

Communications Setting Level

Press O Key for

less than 1 s.
Protocol Setting*
psel area Area up 1 Upload Setting 1
Initial Setting Level

⋅⋅⋅⋅
fins 0 1

M M M
in-t u-no Communications adrh First Address Upper up13 Upload Setting 13
5 0 Unit No.* 0 Word 0

M M M
bps Communications adrl First Address Lower dn 1 Download Setting 1
Word
⋅⋅⋅⋅
57.6 Baud Rate* 0 31

M M M
sdwt Send Data Wait rwat Receive Data Wait dn13 Download Setting 13
20 Time* 1000 Time 75

M M M
Highest
maxu Communications unit Communications copy Copy
0 0 Node Number off
Unit No.
M M M

* These parameters are displayed regardless of the setting of the Protocol Setting parameter.
Note: The Communications Data Length, Communications Stop Bits, and Communications Parity parameters in
the communications setting level are not displayed.

6-2-1 Protocol Setting

Set the Protocol Setting parameter to fins to connect to an OMRON PLC and to mcp4 to connect to a
Mitsubishi PLC. Set the Protocol Setting parameter to cmp to use component communications. Refer to
6-1-5 Connectable PLCs for lists of the PLCs that can be connected.
Refer to 7-1 Component Communications for information on component communications.

Communications Setting Level

Display condition: None

Displayed
Parameter name Setting range Default
characters
Protocol Setting psel cwf: CompoWay/F cwf
mod: ModbusRTU
cmp: Component communications
fins: Host Link (FINS)
mcp4: MC protocol (format 4)

6-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-2-2 Communications Unit No. and Communications Baud Rate

Always assign communications unit numbers in order starting from 0. Do not skip any numbers. Com-
munications unit number 0 is for the master. The numbers from 1 on are for the slaves. We recommend
a communications baud rate setting of 57.6. Set the same communications baud rate for all of the
E5@C Controllers and the PLC. (Setting the PLC is required only for programless communications.)

Communications Setting Level

Display condition: None

Parameter name Displayed characters Setting range Default

Communications Unit u-no 0: Master 1
No. 1 to 31: Slaves
Communications Baud bps 9.6: 9600bps 9.6
Rate 19.2: 19200bps
38.4: 38400bps
57.6: 57600bps

6-2-3 Send Data Wait Time

6-2 E5@C Setup

This is the time that the E5@C will wait from the time that it receives a response from the PLC (or, for
component communications, from an E5@C slave) until it sends the next command. We recommend a
send data wait time setting of 1. Increase the set value of this parameter if the command is sent too
soon to allow the PLC (or, for component communications, the E5@C slave) to receive it.

Communications Setting Level 6

Display condition: None

6-2-2 Communications Unit No. and Communications Baud Rate

Parameter name Displayed characters Setting range Default
Send Data Wait Time sdwt 0 to 99 ms 20 ms

6-2-4 Highest Communications Unit No.

Set the Highest Communications Unit No. parameter to the highest communications unit number that is
actually set on the connected E5@C Controllers.
Make sure that setting of the Highest Communications Unit No. parameter agrees with the unit numbers
of the E5@C Controllers that are actually connected.
Set the communications
The highest communica-
unit numbers starting
tions unit number is 2.
from 0.

E5CC E5CC E5CC

No.0 No.1 No.2

C C C

25 25 25
0 0 0

PLC

E5@C Digital Temperature Controllers Communications Manual (H175) 6-7

6 Programless Communications

Communications Setting Level

Display condition: The Protocol Setting parameter must be set to fins or mcp4
The Protocol Setting parameter must be set to cmp and the Communications Unit No. parameter must
be set to 0 (master).
Parameter name Displayed characters Setting range Default
Highest Communications Unit No. maxu 0 to 99 0

6-2-5 Areas and First Address of Linked Data

Two areas are used in PLC memory by the E5@C, an upload area and a download area. The upload
area is used to monitor the process value, status, and other information from the E5@C. The download
area is used to write the set point, alarm values, and other values to the E5@C.

Address Data in PLC

memory
XXXX Response Flag This flag indicates the completion of processing for the Request Flag.
+1 Communications The status that is given at this address is used in the PLC to check the operation
Status of programless communications.
Upload
+2 Monitor Value 1 Information from the E5@C, such as the PV or status, is set at these addresses.
Area The parameters that are actually used are set in the upload settings.
+3 Monitor Value 2
···
+14 Monitor Value 13
+15 Request Flag This flag is used to control programless communications.
+16 Operation The operation command that corresponds to the code is sent.
Command Code
Downloa +17 Set Value 1 The set values at these addresses are written to the E5@C, such as to the set
d Area point or alarm values. The parameters that are actually used are set in the
+18 Set Value 2
··· download settings.

+29 Set Value 13

The Response Flag, Communications Status, Request Flag, and Operation Command Code all have
special functions that cannot be changed. Refer to the following sections for application methods.

Request Flag: 6-3-1 Controlling Programless Communications with the Request Flag
Response Flag: 6-3-2 Response Flag
Operation Command Code: 6-3-4 Operation Command Codes
Communications Status: 6-3-5 Confirming Operation of Programless Communications

The portion of PLC memory to use is set with the Area, First Address Upper Word, and First Address
Lower Word parameters.

Note: If more than one E5@C Controller is connected to the same communications line, set the starting address to
the same value for all of them. The E5@C Controller with communications unit number 0 will use the words
that start from the specified starting address, the E5@C Controller with unit number 1 will use the words that
start from the specified starting address plus 30 words, and the E5@C Controller with unit number 2 will use
the words that start from the specified starting address plus 60 words

Address Data in PLC memory E5@C

XXXX Response Flag
+1 Communications Status
←
Each E5@C +2 Monitor Value 1
Controller is ···
Communications Unit Number 0
allocated 30 +15 Request Flag
words. +16 Operation Command Code
→
+17 Set Value 1
···
+30 Response Flag
+31 Communications Status ← No.1
··· ···

6-8 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

Communications Setting Level

Display condition: The Protocol Setting parameter must be set to fins or mcp4.

Parameter name Displayed characters Setting range Default

Area area 0: DM (D data registers) 0
1: EM0 (W link registers)
2: EM1 (R file registers)
3: EM2 (ZR file registers)
4: EM3
5: EM4
6: EM5
7: EM6
8: EM7
9: EM8
10: EM9
11: EMA
12: EMB
13: EMC
14: EMD
15: EME
16: EMF
17: EM10
18: EM11

6-2 E5@C Setup

19: EM12
20: EM13
21: EM14
22: EM15
23: EM16
24: EM17
25: EM18
Information in parentheses is applicable when the
Protocol Setting parameter is set to mcp4. Also, all set 6
values of 4 and higher specify D data registers.
First Address Upper Word adrh 0 to 99 0

6-2-5 Areas and First Address of Linked Data

First Address Lower Word adrl 0 to 9999 0
Note: 1 The First Address Upper Word and First Address Lower Word parameters together specify the first
address.
Example: If the first address is 123456, set the First Address Upper Word parameter to 12 and the First
Address Lower Word parameter to 3456.
2 Set the same first address in all of the E5@C Controllers (e.g., set the same value as the value that is set
for the E5@C with communications unit number 0).

Applicable PLC Memory Addresses

Protocol setting Area Applicable address range*
Host Link (FINS) DM 0 to 32767
EM0 to EM18
MC protocol (format 4) D data registers 0 to 12287
W link registers 0 to 8191 (1FFF hex)
R file registers 0 to 32767
ZR file registers 0 to 999999 (F423F hex)
Note: The address ranges depend on the type of PLC. Refer to the manual for your PLC and set the first address
within an applicable range. The last address that is used by the E5@C is calculated as follows:

Last address: First address + (highest communication unit number + 1) × 30 − 1

Example: The following example is for three E5@C Controllers (highest communications
unit number = 2). The first address is set to 100.
Last address = 100 + 3 × 30 − 1 = 189

E5@C Digital Temperature Controllers Communications Manual (H175) 6-9

6 Programless Communications

6-2-6 Receive Data Wait Time

The receive data wait time is the time that the E5@C waits for a response from the PLC (or, for compo-
nent communications, from an E5@C slave). You can normally use the default setting.
If you change the receive data wait time, the time at which programless communications start will
change after the power supply is cycled. Use the following formula to calculate the start time.
Start time = Approx. 1 s + Receive data wait time × 4
Example: For the default setting of 1,000 ms, the start time is approximately 5 s.
Communications Setting Level
Display condition: The Protocol Setting parameter must be set to fins or mcp4.
The Protocol Setting parameter must be set to cmp and the Communications Unit No. parameter must
be set to 0 (master).

Displayed
Parameter name Setting range Default
characters
Receive Data Wait Time rwat 100 to 9999 ms 1000 ms

6-2-7 Communications Node Number

Set the communications node number to the Host Link unit number for an OMRON PLC and to the sta-
tion number for a Mitsubishi PLC.
You can normally use the default setting.

Communications Setting Level

Display condition: The Protocol Setting parameter must be set to fins or mcp4.

Displayed
Parameter name Setting range Default
characters
Communications unit 0 to 99 0
Node Number

6-2-8 Upload Settings and Download Settings

There are 13 upload settings and 13 download settings.

Communications Setting Level

Display condition: The Protocol Setting parameter must be set to fins or mcp4.

Parameter name Displayed characters Setting range Default

Upload Setting 1 up 1 0 to 98 1 Communications Monitor
Upload Setting 2 up 2 2 Status (Upper Word)
Upload Setting 3 up 3 3 Status (Lower Word)
Upload Setting 4 up 4 4 Status 2 (Upper Word)
Upload Setting 5 up 5 6 Decimal Point Monitor
Upload Setting 6 up 6 7 Process Value
Upload Setting 7 up 7 8 Internal Set Point
Upload Setting 8 up 8 11 Heater Current 1 Value
Monitor
Upload Setting 9 up 9 16 MV Monitor (Heating)
Upload Setting 10 up10 0 Nothing assigned.
Upload Setting 11 up11 0 Nothing assigned.
Upload Setting 12 up12 0 Nothing assigned.
Upload Setting 13 up13 0 Nothing assigned.

6 - 10 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

Parameter name Displayed characters Setting range Default

Download Setting 1 dn 1 30 to 98 31 Set Point
Download Setting 2 dn 2 61 Proportional Band
Download Setting 3 dn 3 62 Integral Time
Download Setting 4 dn 4 63 Derivative Time
Download Setting 5 dn 5 32 Alarm Value 1
Download Setting 6 dn 6 33 Alarm Value Upper Limit 1
Download Setting 7 dn 7 34 Alarm Value Lower Limit 1
Download Setting 8 dn 8 35 Alarm Value 2
Download Setting 9 dn 9 36 Alarm Value Upper Limit 2
Download Setting 10 dn10 37 Alarm Value Lower Limit 2
Download Setting 11 dn11 45 Heater Burnout Detection 1
Download Setting 12 dn12 57 Process Value Input Shift
Download Setting 13 dn13 75 SP Ramp Set Value

z Example of Changing a Setting:

To set the Alarm Value 3 parameter for Download Setting 11, you would change the set value from 45
(Heater Burnout Detection 1) to 38 (Alarm Value 3).

6-2 E5@C Setup

6

6-2-8 Upload Settings and Download Settings

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 11

6 Programless Communications

You can use the settings in the following table for the upload settings and download settings.

Set value Set value

0 Nothing assigned.
SP 5 54

Upload or Download Settings

Upload settings (Cannot be used for download settings.)

1 Communications Monitor
SP 6 55
2 Status (Upper Word)
SP 7 56
3 Status (Lower Word)
Process Value Input Shift 57
4 Status 2 (Upper Word)
Process Value Slope Coefficient 58
5 Status 2 (Lower Word)
Remote SP Input Shift 59
6 Decimal Point Monitor
Remote SP Input Slope Coefficient 60
7 Process ValueProportional Band 61
8 Internal Set Point
Integral Time 62
9 Multi-SP No. Monitor
Derivative Time 63
10 Remote SP Monitor
Proportional Band (Cooling) 64
11 Heater Current 1 Value Monitor
Integral Time (Cooling) 65
12 Heater Current 2 Value Monitor
Derivative Time (Cooling) 66
13 Leakage Current 1 Monitor
Dead Band 67
14 Leakage Current 2 Monitor
Manual Reset Value 68
15 Soak Time Remain
Hysteresis (Heating) 69
16 MV Monitor (Heating)
Hysteresis (Cooling) 70
17 MV Monitor (Cooling)
Soak Time 71
18 Valve Opening Monitor
Wait Band 72
19 Spare MV at Stop 73
··· ··· MV at PV error 74
30 Nothing assigned.
SP Ramp Set Value 75
Upload or Download Settings

31 Set Point SP Ramp Fall Value 76

32 Alarm Value 1MV Upper Limit 77
33 Alarm Value Upper Limit 1
MV Lower Limit 78
34 Alarm Value Lower Limit 1
MV Change Rate Limit 79
35 Alarm Value 2Extraction of Square Root Low-cut 80
Point
36 Alarm Value Upper Limit 2 81 Work Bit 1 ON Delay
37 Alarm Value Lower Limit 2 82 Work Bit 1 OFF Delay
38 Alarm Value 3 83 Work Bit 2 ON Delay
39 Alarm Value Upper Limit 3 84 Work Bit 2 OFF Delay
40 Alarm Value Lower Limit 3 85 Work Bit 3 ON Delay
41 Alarm Value 4 86 Work Bit 3 OFF Delay
42 Alarm Value Upper Limit 4 87 Work Bit 4 ON Delay
43 Alarm Value Lower Limit 4 88 Work Bit 4 OFF Delay
44 Manual MV 89 Work Bit 5 ON Delay
45 Heater Burnout Detection 1 90 Work Bit 5 OFF Delay
46 Heater Burnout Detection 2 91 Work Bit 6 ON Delay
47 HS Alarm 1 92 Work Bit 6 OFF Delay
48 HS Alarm 2 93 Work Bit 7 ON Delay
49 SP 0 94 Work Bit 7 OFF Delay
50 SP 1 95 Work Bit 8 ON Delay
51 SP 2 96 Work Bit 8 OFF Delay
52 SP 3 97 Position Proportional Dead Band
53 SP 4 98 Open/Close Hysteresis
Note: 1 If nothing is assigned for an upload setting, the corresponding address in the upload area will contain 0. If
nothing is assigned for a download setting, nothing will be done in the download area.
2 If the same value is set for more than one download setting, only the download setting with the lower
number will be valid. The other download setting will be treated as if nothing was assigned. All upload set-
tings are valid even if the same value is set more than once.

6 - 12 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-2-9 Copying Parameter Settings

You can copy the settings of all parameters except for the Communications Unit No. parameter from the
master (i.e., the Controller with communications unit number 0) to one or more of the slaves (i.e., the
Controllers with communications unit numbers other than 0). Copying parameters is possible only
between Controllers with the same model number. You also cannot copy parameter settings to a Con-
troller with a version that is older than the version of the master. All of the slaves are automatically reset
after the copying operation is completed. Make sure that the system will not be adversely affected
before you copy parameter settings.

Case in which copying The model numbers and versions are the same.
is possible Example:E5CC-RX2ASM-002(V1.1) → E5CC-RX2ASM-002(V1.1)
The model numbers are different.
Cases in which copying Example:E5CC-RX2ASM-002 → E5CC-QX2ASM-002
is not possible The version of the slave receiving the copy is older.
Example:E5CC-RX2ASM-002(V1.1) → E5CC-RX2ASM-002(V1.0)

Communications Setting Level

6-2 E5@C Setup

Display condition: The Protocol Setting parameter must be set to cmp, fins, or mcp4 and the Commu-
nications Unit No. parameter must be set to 0 (master).

Displayed
Parameter name Setting range Default
characters
Copy copy off (Copying failed: e0**) off
all
6
1 to 31

6-2-9 Copying Parameter Settings

Copying Procedure Starting from the Initial Status
(1) Connect the master and slaves with RS-485 connections and turn ON the power
supply.
(2) Set the Communications Unit No. parameters of the slaves in order starting from 1
and then return to the operation level.
(3) Set all of the parameters in the master except for those in the communications
setting level.
(4) Change the master to the communications setting level and change the
communications settings as given below.
Change the Protocol Setting parameter, set the Communications Unit No. parameter to 0,
set the Communications Baud Rate parameter to 57.6, set the Send Data Wait Time
parameter to 1, and set the Highest Communications Unit No. parameter to the highest
communications unit number that is set.
Change the other parameters in the communications setting level as required.
Do not return to the operation level while you are changing the parameter settings. If you
mistakenly return to the communications setting level, return the Communications Baud
Rate parameter to 9.6, return to the operation level, and then set the Communications Baud
Rate parameter again.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 13

6 Programless Communications

(5) copy and execute the copy operation.

If you select all, the parameters settings will be copied to all of the slaves. If you select a
number, the parameters settings will be copied to the slave with the selected
communications unit number.

Set value Description

off Copying is not in progress. The display will automatically return to off when the
(e0**) copy operation is completed normally.
If the copy operation fails,E** will be displayed instead of off. The asterisks will
be replaced with the communications unit number of the slave where copying
failed. This value will be maintained until the copy operation is completed normally
or until you return to the operation level.
Example: If copying failed at the slave with communications unit number 2, e002
will be displayed.
all The parameter settings are copied to the slaves starting with the slave with
communications unit number 1 and continuing on to the slave with the
communications unit number that is set in the Highest Communications Unit No.
parameter. When copying is started, the PV display on the slave will change to
copy. The copying operation is completed when all of the slaves are reset.
1 to 31 The parameter settings are copied to the slave with the specified communications
unit number, and then all of the slaves are automatically reset.
Note: 1 You cannot cancel copying once the copying operation has been started. Even if you change the set value
during the copying operation, the current processing will be continued.
2 If copying fails, the copying operation will be aborted and the parameter settings will not be copied to the
remaining slaves.
For a Mitsubishi PLC, the ERR. indicator on the Serial Communications Module will light during the
copying process, but this does not indicate an error. The ERR. indicator will go out when the PLC is
restarted.
Refer to 6-4-4 E5@C Controller Setup for specific copying procedures.
Troubleshooting
Check the slave where the error occurred.

YES
copy displayed? Execute the copy again from the master using all.

NO
YES Copying is not possible. Copy the parameter
Is the model number of the slave different
from the master? settings to the remaining slaves by specifying
their communications unit numbers individually.
NO
YES Turn OFF the power supply and correct the wiring.
Is the wiring incorrect?
a) If there are a lot of slaves to which the settings
were not copied, set the Protocol Setting
NO parameter to cwf and the Communications
Baud Rate parameter to 9.6, return to the
operation level. Set the communications baud
rate of the master to 9.6, return to the operation
level, and then execute the copy again using
all.
b) If there are only a few slaves to which the
settings were not copied, copy the parameter
settings to the remaining slaves (i.e., those for
which copy is not displayed) by specifying their
communications unit numbers individually.
Is the Protocol Setting parameter set to something
other than cwf? YES
Are the communications unit numbers incorrect?
Is the communications baud rate set to something other than 9.6?
NO
YES Correct the set values, return to the operation
The communications unit number of the
level, and then execute the copy again from the
slave where the error occurred is also
master using all.
being used by a downstream slave.

6 - 14 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

Note: 1 If you cycle the power supply to the E5@C Controllers after the error occurs, perform procedure “a” given
above.
2 If you cannot solve the problem with the above flowchart or if the situation becomes too confusing, cycle
the power supply to all of the E5@C Controllers and then perform procedure “a” given above to copy the
parameter settings to all of the slaves.

Copying Procedure When Replacing a Controller

z Replacing a Slave (i.e., a Controller with a Communications Unit Number
Other Than 0)
(1) Replace the E5@C, wire it, and then turn ON the power supply.
(2) Change all of the E5@C Controllers to the initial setting level and stop programless
communications. The above step is not required for component communications.
(3) Set the Communications Unit No. parameter and Communications Baud Rate
parameter (57.6) in the new E5@C Controller and then return to the operation level.
(4) Copy the parameter set values from the master to the new E5@C Controller by
specifying the number of the Controller.
(5) Return all of the slaves and the master in order to the operation level. This completes

6-2 E5@C Setup

the replacement. The above step is not required for component communications.

z Replacing the Master (i.e., the Controller with a Communications Unit

Number of 0)
To copy the parameter settings, one of the slaves will function as the master, which means that the
No. 0 Upload Area and the No. 1 Upload Area will temporarily change in PLC memory. Turn OFF the 6
power supply to the PLC or otherwise make sure that the system will not be adversely affected
before you perform the following procedure.

6-2-10 Communications Writing

(1) Perform steps 1 and 2 in the above procedure.
(2) Record the communications unit number and communications baud rate of the slave
with communications unit number 1, and then temporarily change the
communications unit number to 0 (master). Do not return to the operation level after
you change the communications unit number.
(3) Set the Communications Unit No. parameter and the Communications Baud Rate
parameter of the new E5@C to the values that you recorded, and then change to the
operation level.
(4) Copy the parameter settings from the temporary master, specifying the
communications unit number of the new E5@C.
(5) Reverse the communications unit numbers of the temporary master and the new
E5@C.
(6) Return all of the slaves and the master in order to the operation level. This completes
the replacement. The above step is not required for component communications.

6-2-10 Communications Writing

Writing can be enabled and disabled from the PLC (or, for component communications, from the E5@C
master). The Communications Writing parameter is normally left ON (enabled). However, if it is neces-
sary to change set values from the display section of the E5@C in an emergency, temporarily change
the setting to OFF (disabled). If you disable communications when writing is being performed from the
PLC, an error will occur in the PLC. (An error code will be set in the Response Flag in PLC memory.) If

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 15

6 Programless Communications

you cycle the power supply to the E5@C or move to the initial setting level and then go back to the oper-
ation level, the Communications Writing parameter will automatically change to ON.

6-2-11 Communications Monitor Parameter

This parameter displays the communications cycle time of the E5@C. If communications with the PLC
are not possible, c.err is displayed and then the cycle time is displayed again when communications
are restored.

PLC

E5CC E5CC E5CC E5CC

No.0 No.1 No.2 No.0

C C C C

25 25 25 25
0 0 0 0 Order of
communications

Cycle time of E5CC with communications unit number 0

Adjustment Level
Display condition: The Protocol Setting parameter must be set to fins or mcp4.

Displayed
Parameter name Monitor range* Default
characters
Communications plcm Normal operation: 0 to 9999 ms. If 9,999 ms is exceeded, ---
Monitor ]]]] is displayed.
Error: c.err
Note: If this parameter is monitored in PLC memory, the cycle time is given as 0 to FFFF hex (0 to 65,535 decimal).
An error is indicated by FFFF hex.

6 - 16 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-3 Controlling Programless

Communications
The section describes the methods that are used to control programless communications from the PLC.

6-3-1 Controlling Programless Communications with the Request Flag

6-3 Controlling Programless Communications

There are the following three ways to control programless communications. The Request Flag in PLC
memory is used to change the control method.

1. Updating Monitor Values (Disable Writing Request)

The monitor values are
repeatedly updated.
PLC memory PLC memory
Response Flag Response Flag: 0
Upload Communications Status Communications Status
Area Monitor Value Monitor Value C

25
Request Flag: 0 Request Flag: 0 0
Download Operation Command Code Operation Command Code
Area Set Value Set Value

If you set the Request Flag to 0, the Response Flag will change to 0 and the monitor values will be updated.

2. Writing Set Values and Updating Monitor Values (Enable Writing Request) 6
b. Monitor values are updated
PLC memory PLC memory and then “a” is performed.

6-3-1 Controlling Programless Communications with the Request Flag

Response Flag Response Flag: 1
Communications Status Communications Status
Monitor Value Monitor Value C

25
Request Flag: 1 Request Flag: 1 0
Operation Command Code Operation Command Code
Set Value Set Value

a. The set values are

written to the E5@C.

If you set the Request Flag to 1, the set values will be written to the E5@C and then the operation com-
mand will be written to the E5@C. Finally the Response Flag will change to 1 and the monitor values will
be updated. The operation command is processed only the first time, but the set values are written
each time. Therefore, you cannot change the parameters that are specified for download settings at the
E5@C. To change parameters that are specified for download settings at the E5@C, refer to 6-2-10
Communications Writing.

3. Initializing the Download Area

PLC memory PLC memory
Response Flag Response Flag: 1
Communications Status Communications Status
Monitor Value Monitor Value C

25
Request Flag: 2 Request Flag: 1 0
Operation Command Code Operation Command Code
Set Value Set Value
The set values are initialized to the values in
the E5@C and writing is enabled.

If you set the Request Flag to 2, the set values in the download area will be initialized to the values from
the E5@C and then the Request Flag and Response Flag will change to 1. Finally, the operation
described above for control method 2 is performed.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 17

6 Programless Communications

6-3-2 Response Flag

The Response Flag changes as shown below for the values of the Request Flag.

Response Flag
Request Flag
Normal Error
0: Disable Writing 0* eeee
1: Enable Writing 1 e001 to e013
8000 or Operation Command Code
2: Initialize Download Areas 1 eeee
* If a communications error prevents reading data for the Request Flag, the Response Flag will change to eeee.

Response Flag at error Cause of error

eeee There was no response or a communications error occurred when reading the download
area.
e001 to e013 *1 • The write data is out of the setting range.
• The Communications Writing parameter is set to OFF.
8000 (hex) or Operation • The operation command code is incorrect.
Command Code *2 • The current status of the E5@C prevents it from acknowledging the operation command.
• The Communications Writing parameter is set to OFF.
*1 The Response Flag gives the number of the download setting where the error occurred. If more than one
error occurs, the smallest number is given first. When the error is cleared, the next error number is given.
Note: If a setting out-of-range error occurs, communications are performed from the start of the download
area to the parameter where the error occurs. Communications are not performed for parameters that
are beyond where the error occurs even if they are within the setting range. Remove the cause of the
setting out-of-range error until the Response Flag shows a normal response. Even if a setting
out-of-range error occurs, communications will continue for all Controllers where the error did not
occur and for the upload settings for the Controller with the relevant communications Unit number.
Example: If errors occur for download settings 10 and 12, the Response Flag will be e010.
*2 An OR of 8000 and the operation command code is given. If a setting range error occurs at the same time,
indicating the operation command error will be given priority.
Example: If an error occurs for operation command code 1101, the Response Flag will be 9101.

z Precautions for AT (Auto-tuning)

Do not change the set values in the download area from the start of auto-tuning until auto-tuning is
completed or canceled. Programless communications cannot be used to change the set values of
the E5@C after auto-tuning starts. Also, if the Request Flag is set to 1 (Enable Writing) at the com-
pletion of auto-tuning, the set values in the download area are initialized to the set values from the
E5@C. This is to update the PID constants. (It occurs even if PID constants are not set in the down-
load area.) To prevent initialization, change the Request Flag to 0 (Disable Writing) after auto-tuning
starts. If you change the Request Flag to 1 (Enable Writing) after the completion of auto-tuning, the
values in PLC memory will be written to the E5@C. If you change the Request Flag to 2 (Initialize
Download Areas) after the completion of auto-tuning, the download area will be initialized with the
set values from the E5@C.

z Precautions for ST (Self-tuning)

If you use self-tuning and set PID constants in the download area, always leave the Request Flag
set to 1 (Enable Writing).* If you change the Request Flag from 0 (Disable Writing) to 1 (Enable Writ-
ing) during operation, the PID constants that were found with self-tuning will be overwritten with the
values from PLC memory.
* You can change the Request Flag to 2 (Initialize Download Areas) at the start of programless communications.

6 - 18 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-3-3 Range of Operation for Programless Communications

Programless communications start operating after the power supply is turned ON or after the E5@C is
reset. They stop operating when the initial setting level is entered.

Levels Programless communications

Operation level, adjustment level, manual control level, Setting area 0 Operates
monitor/setting item level, and protect level
Initial setting level, communications setting level, advanced Setting area 1 Stops
function setting level, and calibration level

6-3 Controlling Programless Communications

6-3-4 Operation Command Codes
The following table gives the operation command codes that can be set.
For details on operation commands, refer to 2-3-8 Operation Command.

Operation command Operation command code Switch

RUN/STOP 0100 RUN
0101 STOP
Multi-SP 0200 SP 0
0201 SP 1
0202 SP 2
0203 SP 3
0204 SP 4
0205 SP 5
0206 SP 6
0207 SP 7
AT Execute/Cancel 0300 AT Cancel
6
0301 100% AT Execute
0302 40% AT Execute
Write Mode 0400 Backup Mode

6-3-3 Range of Operation for Programless Communications

0401 RAM Write Mode
Save RAM Data 0500 Save RAM Data
Software Reset 0600 Software Reset
Auto/Manual 0900 Automatic Mode
0901 Manual Mode
Alarm Latch Cancel 0C00 Alarm 1 Latch Cancel
0C01 Alarm 2 Latch Cancel
0C02 Alarm 3 Latch Cancel
0C03 Heater Burnout Latch Cancel
0C04 HS Alarm Latch Cancel
0C05 Alarm 4 Latch Cancel
0C0F All Latch Cancel
SP Mode 0D00 Local SP Mode
0D01 Remote SP Mode
Invert Direct/Reverse 0E00 Do Not Invert
Operation 0E01 Invert
Program Start 1100 Reset
1101 Start

6-3-5 Confirming Operation of Programless Communications

You can check the operation of programless communications in the Communications Status in the
upload area.
The value of the Communications Status changes between 0 and 1 each time the upload area is
updated.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 19

6 Programless Communications

6-3-6 Write Mode

The E5@C normally writes the set values to non-volatile memory (i.e., in Backup Mode). If you fre-
quently change set values with programless communications, use an operation command to change to
RAM Write Mode.
In RAM Write Mode, however, the set values will be restored to the values in non-volatile memory every
time the power supply is cycled. If you need to maintain the current set values before the power supply
is turned OFF, use an operation command to save them to RAM before the power supply turns OFF.

6-3-7 Troubleshooting
Possible problems that can occur with programless communications and corrective actions are given in
the following table.

Status Cause and corrective action Page

The Response Flag changes to The write value for the set value for download setting ** is out of 3-3 to 3-7
e0**. range.
The Communications Writing parameter is set to OFF. 6-15
The Response Flag changes to The operation command code is incorrect. 6-19
8*** (hex) or 9*** (hex). The current status of the E5@C prevents it from acknowledging 2-17 to 2-20
the operation command.
The Communications Writing parameter is set to OFF. 6-15
The Response Flag changes to The power supply to the E5@C Controllers was turned ON 6-4
eeee. before the power supply to the PLC.
The PLC memory address is out of range. 6-8
There may be noise interference. Shield the communications line 6-22
or attach terminating resistance to the end of the 6-33
communications line. 6-38
• The communications The Highest Communications Unit No. parameter is not set to 6-7
indicator on the PLC flashes the highest communications unit number that is actually set.
irregularly. • Communications unit numbers are not set consecutively from 6-7
• The value of the 0 or the same communications unit number is set more than
Communications Monitor once.
parameter in the E5@C is too • The setting of the Communications Baud Rate parameter is
long. not the same for all E5@C Controllers.
The E5@C was moved to the initial setting level (setting area 1). 6-19
• The communications The power supply is not turned ON to the E5@C Controller with 6-4
indicator on the PLC is not lit. communications unit number 0.
• The Communications The wiring is not correct. 6-22
Monitor parameter in the 6-33
E5@C is c.err. 6-38
The communications settings are not the same between the PLC 6-22
and the E5@C. 6-33
6-38
6-25
The E5@C was moved to the initial setting level (setting area 1). 6-19
Check the cycle time of the PLC. If it is longer than the value set 6-10
for the Receive Data Wait Time parameter, change the set value
of this parameter so that it is longer than the cycle time.
The ERR. indicator on the The power supply to the E5@C Controllers was not turned ON or 6-4
Serial Communications Module OFF at the proper time.
is lit (for a Mitsubishi PLC).
Note: For information on other problems, refer to A-2 Troubleshooting.

6 - 20 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-4 Connecting to CP-series PLCs

6-4-1 Configuration and Procedure

The following configuration is used as an example in giving the setup and application procedures for
programless communications.

• All of the E5CC Controllers must be the same model. (Copying parameter settings is not possible if
the models are different.)
• D0000 to D0089 are used in the PLC memory. The default E5CC parameter allocations are used.
• A commercially available USB2.0, A/B cable is used.

6-4 Connecting to CP-series PLCs

IBM PC/AT or compatible

USB port
CX-Programmer CP1E CPU Unit
Support Software CP1E-N30D@-@ RS-422A/RS-485 Option Board
CP1W-CIF11

Commercially E5CC E5CC E5CC

No.0 No.1 No.2
available USB
cable
C C C
Peripheral (USB) port
25 25 25
0 0 0
Back of CP1W-CIF11
DIP switch
for operation settings
RS-485
6
O
N

6-4-1 Configuration and Procedure

1
2
3
4
5
6

Note: Refer to the CX-Programmer Operation Manual (Cat. No. W446) for information on installing the
CX-Programmer and USB driver.

The application procedure is given below.

START

Set the switches and wire the system. Set the switches on the CP1W-CIF11 and wire it to the E5CC Controllers.

Set up the PLC. Use the CX-Programmer to set up communications on the CP1E to enable
communicating with the E5CC Controllers.

Set up the E5@C Controllers. Set up programless communications in the E5CC Controllers.

Check operation. Use the CX-Programmer to confirm that programless communications are operating.

END

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 21

6 Programless Communications

6-4-2 Switch Settings and Wiring

Before you attach the CP1W-CIF11 to the CP1E, turn OFF pin 4 on the DIP switch for operation set-
tings on the back of the CP1W-CIF11 and turn ON the rest of the pins.

Pin OFF ON Setting

1 No terminating resistance Terminating resistance on both Terminating resistance selection
ends
2 4-wire 2-wire 2-wire or 4-wire selection
3 4-wire 2-wire Same as above.
4 --- --- Not used.
5 RS control disabled. (Signal RS control enabled. RS control selection for RD
always received.)
6 RS control disabled. (Signal RS control enabled. RS control selection for SD
always sent.)

Wire the CP1W-CIF11 to the E5CC Controllers as shown below.

CP1W-CIF11

120 Ω (1/2 W)
B(+) B(+) B(+) terminating resistance

13 13 13

14 14 14
A(−) A(−) A(−)
Shield Shield Shield
E5CC E5CC E5CC
No.0 No.1 No.2

Note: 1 The maximum transmission distance is 50 m for the CP1W-CIF11 and 500 m for the CP1W-CIF21.
2 For wiring methods, refer to A-3-2 Recommended RS-422A/485 Wiring in the CP1E CPU Unit Hardware
User’s Manual (Cat. No. W479).

6-4-3 PLC Setup

Set up communications on the CP1E to enable communicating with the E5CC Controllers.
PLC operation will stop and the power supply will be cycled during the setup procedure. Make sure that
this will not create any problems in the controlled system.

z Connecting to the PLC

(1) Connect the computer to the CP1E with a USB cable and then start the
CX-Programmer.
(2) Select PLC − Auto Online − Direct Online from the menu bar.

6 - 22 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(3) Select the USB connection Check Box and click the Connect Button.

6-4 Connecting to CP-series PLCs

(4) Select the Transfer IO table and Special Unit Setup Check Box and click the Yes
Button.

6
(5) After the data has been transferred, click the OK Button.

6-4-3 PLC Setup

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 23

6 Programless Communications

Communications Settings for the Serial Communications Option Board

(1) The PLC operating mode must be changed to PROGRAM mode to enable changing
the communications settings in the PLC Setup.
Select PLC − Operating Mode − Program from the menu bar. A confirmation dialog
box will be displayed. Click the Yes Button.

(2) Double-click Settings. The PLC Setup Window will be displayed.

(3) Click the Serial Option Port Tab, select the Custom Option, and set the baud rate to
57,600. Leave the other settings at their default values.

Note: If you change the unit number, refer to 6-2-7 Communications Node Number.

6 - 24 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(4) Select Options − Transfer to PLC from the menu bar in the window that is shown
above. The settings will be transferred.
Close the window and cycle the power to the PLC. This completes the PLC setup pro-
cedure. You will use the CX-Programmer to check operation, so leave it online.

6-4-4 E5@C Controller Setup

This section describes the setup for programless communications (or components communications).
Refer to 6-2 E5@C Setup for the procedure to display parameters. (Refer to 7-1-3 E5@C Setup for
component communications as well.) Here we will assume that all parameters other than those for com-
munications have already been set. Make sure that all of the E5@C Controllers are the same model.
The parameter settings cannot be copied if the models are different.

6-4 Connecting to CP-series PLCs

(1) Set the Communications Unit No. parameter (u-no) in the communications setting
level to 1 for the No. 1 Controller and set it to 2 for the No. 2 Controller. Leave the
other communications settings at their default values.
The default communications unit number is 1, so the Communications Unit No. parameter
for the No. 1 Controller does not need to be changed.
Always set the communications unit numbers of the slaves in order from 1.
To enable the changes to the settings, always return to the operation level.

(2) Change the parameter settings in the communications setting level of the No. 0
Controller to the values that are given below.
6
Protocol Setting (psel): fins (Set mcp4 for a Mitsubishi PLC or set cmp for component
communications.)

6-4-4 E5@C Controller Setup

Communications Unit No. (u-no) : 0
Communications Baud Rate (bps) : 57.6
Send Data Wait Time (sdwt): 1
Highest Communications Unit No. (maxu): 2

Do not return to the operation level even after you finish making the settings.
Here we will assume that all parameters other than those for communications have already
been set. If parameters other than those for communications need to be set, change them
first and then change the communications settings last.

(3) Perform the following procedure to copy the parameter settings in the No. 0
Controller to the No. 1 and No. 2 Controllers.
(a) Display the copy parameter in the communications setting level on the No. 0
Controller.
(b) Press the Up Key to select all and wait for three seconds. The completion of the
copy operation must be confirmed, so do not move to any other levels or param-
eters. If you do change to any other levels or parameters, display the copy
parameter again.
(c) The PV displays on the No. 1 and No. 2 Controllers will change to copy and then
these Controllers will be reset.
(d) Confirm that the setting of the copy parameter on the No. 0 Controller changes
to off (i.e., copying completed), and then return the No. 0 Controller to the
operation level.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 25

6 Programless Communications

(e) Programless communications should now be operating. Confirm that the COMM
indicator on the CP1W-CIF11 is flashing.
If you are using the CJ1W-SCU21-V1, the SD1 and RD1 indicators will flash. If you are
using the QJ71C24N-R4, the SD and RD indicators for channel 1 (CH1) will flash.
If you are using component communications, change the SPs in the master and
confirm that the SPs of the slaves change to the same values.

“ALL” flashes. Copying starts. Copying completed.

copy No.0 copy No.0 copy No.0 copy No.0

off Press the all Wait for 3 s. all Copying off
U Key. processed.

copy No.1 25 No.1

0

copy No.2 25 No.2

0
copy is displayed on the The Controllers are
No. 1 Controller and then automatically reset when
the No. 2 Controller. copying is completed.

CP1W-CIF11 CJ1W-SCU21-V1 QJ71C24N-R4

SCU21-V1 QJ71C24N-R4
RUN ERC SD1 RD1
RUN ERR.
NEU. NEU.
RDY ERH SD2 RD2
CH1 SD SD CH2
RD RD

2345
UNIT
6
1

For a Mitsubishi PLC, the ERR. indicator on the Serial Communications Module will light during the
copying process. Ignore it and check the operation. The ERR. indicator will go out when the PLC is
restarted.
Note: Refer to 6-2-9 Copying Parameter Settings for details on the copying operation.

6 - 26 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-4-5 Checking Operation

The SP and RUN/STOP status of the E5@C Controllers will be changed to check operation. Make sure
that this will not create any problems in the controlled system.

z Checking E5CC Monitor Values

(1) The PLC operating mode must be changed to PROGRAM mode to enable changing
values in PLC memory.
Perform step 1 in Communications Settings for the Serial Communications Option Board in
6-4-3 PLC Setup to move to PROGRAM mode.
(2) Double-click Memory. The PLC Memory Window will be displayed.

6-4 Connecting to CP-series PLCs

(3) We will monitor memory in the PLC Memory Window.
Double-click D to select the DM Area in the left pane and then select Online − Monitor
from the menu bar. The Monitor Memory Areas Dialog Box will be displayed. Click the Mon-
itor Button. 6

6-4-5 Checking Operation

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 27

6 Programless Communications

(4) We will change the values that are displayed for PLC memory to signed decimal
values.
Select View − Display − Signed Decimal from the menu bar. You can select View − Dis-
play − Hexadecimal to return the display to hexadecimal values.

(5) We will check the E5CC monitor values.

The area where monitor values are checked is called the upload area.
D0000 to D0014 is the upload area for the No. 0 Controller, D0030 to D0044 is the upload
area for the No. 1 Controller, and D0060 to D0074 is the upload area for the No. 2
Controller.

No.0

No.1

No.2

6 - 28 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

With the default settings, the following parameters are set for the upload areas.
Check the values in the upload areas to see if they are the same as those that are given in
the following table. (It is not necessary to check addresses for which “---” is given in the
Value column.)

No.0 No.1 No.2 Parameter Value

D0000 D0030 D0060 Response Flag (fixed) 0
D0001 D0031 D0061 Communications Status (fixed) Alternates between 0 and 1.
D0002 D0032 D0062 Communications Monitor ---
D0003 D0033 D0063 Status (Upper Word) ---
D0004 D0034 D0064 Status (Lower Word) ---
D0005 D0035 D0065 Status 2 (Upper Word) ---
D0006 D0036 D0066 Decimal Point Monitor ---
D0007 D0037 D0067 Process Value Process Value *

6-4 Connecting to CP-series PLCs

D0008 D0038 D0068 Internal Set Point ---
D0009 D0039 D0069 Heater Current 1 Value Monitor ---
D0010 D0040 D0070 MV Monitor (Heating) ---
D0011 D0041 D0071 Nothing assigned. ---
··· ··· ··· ··· ···
D0014 D0044 D0074 Nothing assigned. ---
* If the default settings are used and a sensor is not connected, the PV display on the E5CC will show an input
error (s.err) and the process value in the upload area will be 1320 (528 hex).

Changing E5CC Settings

(1) We will check the area that is used to change E5CC set values.
The area that is used to change the set value is called the download area. 6
D0015 to D0029 is the download area for the No. 0 Controller, D0045 to D0059 is the
download area for the No. 1 Controller, and D0075 to D0089 is the download area for the

6-4-5 Checking Operation

No. 2 Controller.

No.0

No.1

No.2

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 29

6 Programless Communications

With the default settings, the following parameters are set for the download areas.
No.0 No.1 No.2 Parameter Value (E5CC default settings)
D0015 D0045 D0075 Request Flag (fixed) 1 (0001 hex)
D0016 D0046 D0076 Operation Command Code (fixed) 0 (0000 hex)
D0017 D0047 D0077 Set Point 0 (0000 hex)
D0018 D0048 D0078 Proportional Band 80 (0050 hex)
D0019 D0049 D0079 Integral Time 233 (00E9 hex)
D0020 D0050 D0080 Derivative Time 40 (0028 hex)
D0021 D0051 D0081 Alarm Value 1 0 (0000 hex)
D0022 D0052 D0082 Alarm Value Upper Limit 1 0 (0000 hex)
D0023 D0053 D0083 Alarm Value Lower Limit 1 0 (0000 hex)
D0024 D0054 D0084 Alarm Value 2 0 (0000 hex)
D0025 D0055 D0085 Alarm Value Upper Limit 2 0 (0000 hex)
D0026 D0056 D0086 Alarm Value Lower Limit 2 0 (0000 hex)
D0027 D0057 D0087 Heater Burnout Detection 1 0 (0000 hex)
D0028 D0058 D0088 Process Value Input Shift 0 (0000 hex)
D0029 D0059 D0089 SP Ramp Set Value 0 (0000 hex)

(2) We will initialize the download areas with the set values from the E5CC Controllers.
The download areas have not been initialized, so we will initialize them with the set values
from the E5CC Controllers. Double-click D0015 (Request Flag) in the PLC Memory Win-
dow. The following dialog box is displayed. Enter 2 (Initialize Download Areas) and click the
OK Button.

(3) We will confirm that the download areas have been initialized.
When initialization is completed, D0000 (Response Flag) will change to 1 (Normal End) and
D0015 (Request Flag) will automatically change to 1 (Enable Writing). Check the download
area to see if it has been initialized to the values given in the above table.
Confirm this for the No. 1 and No. 2 Controllers as well.
(4) We will change the set point for the No. 0 Controller.
Double-click D0017 (Set Point) in the PLC Memory Window, enter 100 (64 hex) for the
value, and then click the OK Button. Confirm that D0000 (Request Flag) remains at 1
(Enable Writing) and that the SV Display on the No. 0 Controller changes to 100.
Confirm this for the No. 1 and No. 2 Controllers as well.

6 - 30 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

Stopping the E5CC Controllers

(1) We will change the values that are displayed for PLC memory to hexadecimal values.
In the PLC Memory Window, select View − Display − Hexadecimal from the menu bar.
(2) We will stop the No. 0 Controller.
Change the RUN/STOP parameter (r-s) in the operation level of the E5CC to RUN (run).
For a Controller with event inputs, the Event Input 2 Assignment parameter (ev-2) in the
initial setting level is set to RUN/STOP (stop), so the RUN/STOP parameter will not be dis-
played. Change the Event Input 2 Assignment parameter to NONE (none), and then
change the RUN/STOP parameter to RUN.
(3) We will switch the No. 0 Controller to STOP.
Confirm that D0015 (Request Flag) in the PLC Memory Window is 0001 (Enable Writing),
double-click D0016 (Operation Command Code), enter 0101 hex (STOP), and then click

6-4 Connecting to CP-series PLCs

the OK Button.
D0016 will change to 0000, D0000 (Response Flag) will remain at 0001 (Enable Writing),
and “STOP” will be displayed on the No. 0 Controller.
Confirm this for the No. 1 and No. 2 Controllers as well.
For details on other operation command codes, refer to 6-3-4 Operation Command Codes.

6-4-5 Checking Operation

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 31

 6 Programless Communications

6-5 Connecting to CJ-series PLCs

6-5-1 Configuration and Procedure

The following configuration is used as an example in giving the setup and application procedures for
programless communications.

• All of the E5CC Controllers must be the same model. (Copying parameter settings is not possible if
the models are different.)
• D0000 to D0089 are used in the PLC memory. The default E5CC parameter allocations are used.
• A commercially available USB2.0, A/B cable is used.
CJ1W-CIF11 DIP switch

1 O
2 N
3
4
IBM PC/AT or compatible 5
6

CJ2M CPU Unit

CJ2M-CPU@@
CX-Programmer USB port Serial Communications Unit
Support Software CJ1W-SCU21-V1
SCU21-V1
PA205R

POWER
RUN

RDY
ERC

ERH
SD1

SD2
RD1

RD2
RS-422A Converter
2345
UNIT CJ1W-CIF11
6789
01

ABC
NO.

Commercially L1
PORT1
E5CC E5CC E5CC
available USB cable No.0 No.1 No.2
FG

AC100-240V
SDB+

INPUT
SDA-

L2/N
RDB+
RDA-

Peripheral (USB) port C C C

RUN
PORT2
25 25 25
0 0 0
OUTPUT
AC240V
DC24V

RS-485
Note: Refer to the CX-Programmer Operation Manual (Cat. No. W446) for information on installing the
CX-Programmer and USB driver.

The application procedure is given below.

START

Set the switches and wire the system. Set the switches on the CJ1W-CIF11 and wire it to the E5CC Controllers.

Set up the PLC. Use the CX-Programmer to set up communications on the CJ1W-SCU21-V1
to enable communicating with the E5CC Controllers.

Set up the E5@C Controllers. Set up programless communications in the E5CC Controllers.

Check operation. Use the CX-Programmer to confirm that programless communications are operating.

END

6 - 32 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-5-2 Switch Settings and Wiring

Before you attach the CJ1W-CIF11 to the CJ1W-SCU21-V1, turn OFF pin 4 on the DIP switch on the
back of the CJ1W-CIF11 and turn ON the rest of the pins.
Pin OFF ON Setting
1 No terminating resistance Terminating resistance on Terminating resistance selection
both ends
2 4-wire 2-wire 2-wire or 4-wire selection
3 4-wire 2-wire Same as above.
4 --- --- Not used.
5 RS control disabled. (Signal RS control enabled. RS control selection for RD
always received.)
6 RS control disabled. (Signal RS control enabled. RS control selection for SD
always sent.)

6-5 Connecting to CJ-series PLCs

Wire the CJ1W-CIF11 to the E5CC Controllers as shown below.
CJ1W-CIF11

FG

RDA- RDB+ SDA- SDB+ FG

RDA− RDB+ 120 Ω (1/2 W)

B(+) B(+) B(+) terminating resistance

13 13 13

14 14 14

Shield A(−) Shield A(−) Shield A(−)

E5CC
No.0
E5CC
No.1
E5CC
No.2
6
Note: 1 The maximum transmission distance is 50 m.
2 For wiring methods, refer to Appendix G CJ1W-CIF11 RS-422A Converter in the SYSMAC CJ/NSJ Series

6-5-2 Switch Settings and Wiring

Operation Manual (Cat. No. W393).

6-5-3 PLC Setup

Set up communications on the CJ1W-SCU21-V1 to enable communicating with the E5CC Controllers.
PLC operation will stop and the power supply will be cycled during the setup procedure. Make sure that
this will not create any problems in the controlled system.

Connecting to the PLC

Refer to Connecting to the PLC in 6-4-3 PLC Setup.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 33

6 Programless Communications

Communications Settings in the Serial Communications Unit (SCU)

(1) The PLC operating mode must be changed to PROGRAM mode to enable changing
the SCU communications settings.
Select PLC − Operating Mode − Program from the menu bar. A confirmation dialog box
will be displayed. Click the Yes Button.

(2) Double-click IO Table and Unit Setup. The IO Table Window will be displayed.

(3) Double-click CJ1W-SCU21-V1. The CJ1W-SCU21-V1 Setting Window will be

displayed.

6 - 34 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(4) We will change the communications settings for port 1.

Set Port 1: Port settings to User settings, set Port 1: Baud rate to 57600 bps, and then click
the Transfer [PC to Unit] Button. Use the defaults settings for the other parameters.

6-5 Connecting to CJ-series PLCs

6

6-5-3 PLC Setup

Note: If you change the unit number, refer to 6-2-7 Communications Node Number.

Click the Yes Button. The settings will be transferred. After the data has been transferred,
click the OK Button.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 35

6 Programless Communications

Click the Yes Button to restart the Unit. Select All ports and then click the OK Button.
A dialog box will be displayed when the Unit has been restarted. Click the OK Button. This
completes the PLC setup procedure. You will use the CX-Programmer to check operation,
so leave it online.

6-5-4 E5@C Controller Setup

Set up programless communications. Perform the procedure that is given in 6-4-4 E5@C Controller
Setup.

6-5-5 Checking Operation

Perform the procedure that is given in 6-4-5 Checking Operation.

6 - 36 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

6-6 Connecting to MELSEC Q-series

PLCs

6-6-1 Configuration and Procedure

The following configuration is used as an example in giving the setup and application procedures for
programless communications.

6-6 Connecting to MELSEC Q-series PLCs

• All of the E5CC Controllers must be the same model. (Copying parameter settings is not possible if
the models are different.)
• D0 to D89 are used in the PLC memory. The default E5CC parameter allocations are used.
• A commercially available USB2.0, A/B cable is used.
IBM PC/AT or compatible

Q@@CPU QJ71C24N-R4

GX Works2
Programming USB port
Software
E5CC E5CC E5CC
No.0 No.1 No.2

C C C
Commercially
available USB
cable
25 25 25
USB connector 0 0 0
6
RS-485

6-6-1 Configuration and Procedure

Note: Refer to the GX Works2 Installation Instructions (BCN-P5713 ) for information on installing the GX Works2
and to the GX Works2 Version 1 Operating Manual (Common) (SH-080779ENG) for information on installing
the USB driver.

The application procedure is given below.

START

Wire the network. Write the QJ71C24N-R4 to the E5CC Controllers.

Set up the PLC. Use GX Works2 to set up communications on the QJ71C24N-R4-V1 to enable
communicating with the E5CC Controllers.

Set up the E5@C Controllers. Set up programless communications in the E5CC Controllers.

Check operation. Use GX Works2 to confirm that programless communications are operating.

END

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 37

6 Programless Communications

6-6-2 Wiring
Wire the QJ71C24N-R4 to the E5CC Controllers as shown below.
QJ71C24N-R4
QJ71C24N-R4
RUN ERR.
NEU. NEU.
CH1 SD SD CH2
RD RD

120 Ω (1/2 W)
CH1 terminating resistance
RS-422/485 Shield B(+) Shield B(+) Shield B(+)

SDA 13 13 13

SDB
14 14 14
RDA
A(−) A(−) A(−)
RDB
E5CC E5CC E5CC
Terminating SG No.0 No.1 No.2
resistance

(FG)

Note: 1 Use a terminating resistance of at least 54 Ω.

2 The maximum transmission distance is 500 m.
3 For wiring methods, refer to 3.3 RS-422/485 Interface Specifications and 4.4.2 Connecting the
RS-422/485 Interface in the Q Corresponding Serial Communication Module Users Manual (Basic)
(SH-080006).

6-6-3 PLC Setup

Set up communications on the QJ71C24N-R4 to enable communicating with the E5CC Controllers.
PLC operation will stop and the power supply will be cycled during the setup procedure. Make sure that
this will not create any problems in the controlled system.

Connecting to the PLC

(1) Connect the computer to the Q-series CPU Module and then start GX Works2.
(2) Select Online − Read from PLC from the menu bar.

(3) Select QCPU (Q mode), and then click the OK Button.

6 - 38 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(4) Click the OK Button.

6-6 Connecting to MELSEC Q-series PLCs

(5) Click the Execute Button.
6

6-6-3 PLC Setup

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 39

6 Programless Communications

(6) When the set values have been read, click the Close Button. Also close the above
dialog box.

Communications Settings in the Serial Communication Module

(1) Double-click Switch Setting. The Switch Setting Dialog Box for communications will
be displayed.

6 - 40 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(2) We will change the communications settings for CH1.

Change the following settings, and then click the OK Button. Use the defaults settings for
the other parameters.

• Parity Bit: Exist

• Even/odd parity: Even
• Stop bit: 2
• Sum check code: Exist
• Online Change: Enable
• Setting modifications: Enable
• Communication rate setting: 57600 bps (This setting can be changed after you change

6-6 Connecting to MELSEC Q-series PLCs

the communication protocol setting.)
• Communication protocol setting: MC protocol (Format 4)

6-6-3 PLC Setup

Note: If you change the station number setting, refer to 6-2-7 Communications Node Number

(3) Select Online - Write to PLC. A dialog box to write the set values will be displayed.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 41

6 Programless Communications

(4) We will write set values to the PLC.

Click the Intelligent Function Module Tab and select the check box for the Serial
Communication Module in the Valid Column. Then click the PLC Module Tab, select the
check box for the parameters in the Target Column, and then click the Execute Button.

6 - 42 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(5) We will write set values to the PLC.

Some dialog boxes will be displayed before and after the following dialog box. Click the Yes
Button for of them, or click the Yes to All Button.
When the following dialog box is displayed, click the Close Button. Also close the dialog
box to write set values, and then cycle the power supply to the PLC.
This completes the PLC setup procedure. You will use GX Works2 to check operation, so
leave it online.

6-6 Connecting to MELSEC Q-series PLCs

6

6-6-4 E5@C Controller Setup

6-6-4 E5@C Controller Setup
Set up programless communications. Perform the procedure that is given in 6-4-4 E5@C Controller
Setup.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 43

6 Programless Communications

6-6-5 Checking Operation

The SP and RUN/STOP status of the E5@C Controllers will be changed to check operation. Make sure
that this will not create any problems in the controlled system.

z Checking E5CC Monitor Values

(1) We will display PLC memory in a dialog box.
Select Online − Monitor − Device/Buffer Memory Batch Monitor.

(2) We will monitor PLC memory in a dialog box.

Enter D0 for in the Device Name Box and press the Enter Key on the computer’s keyboard.
Monitoring of D0 will be started.

6 - 44 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

(3) To make the value easier to check, we will change the values that are displayed to
decimal values.
Click the Display Format Button in the above dialog box, select the Word Multi-point
Option in the Monitor Format Area, select the 10 Points Option in the Word Device Word
Multi-point Format Area, and then click the OK Button.

6-6 Connecting to MELSEC Q-series PLCs

6

6-6-5 Checking Operation

(4) We will check the E5CC monitor values.
The area where monitor values are checked is called the upload area.
D0 to D14 is the upload area for the No. 0 Controller, D30 to D44 is the upload area for the
No. 1 Controller, and D60 to D74 is the upload area for the No. 2 Controller.

No.0

No.1

No.2

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 45

6 Programless Communications

With the default settings, the following parameters are set for the upload areas.
Check the values in the upload areas to see if they are the same as those that are given in
the following table. (It is not necessary to check address for which “---” is given in the Value
column.)

No.0 No.1 No.2 Parameter Value

D0 D30 D60 Response Flag (fixed) 0
D01 D31 D61 Communications Status (fixed) Alternates between 0 and 1.
D02 D32 D62 Communications Monitor ---
Parameter
D03 D33 D63 Status (Upper Word) ---
D04 D34 D64 Status (Lower Word) ---
D05 D35 D65 Status 2 (Upper Word) ---
D06 D36 D66 Decimal Point Monitor ---
D07 D37 D67 Process Value Process Value *
D08 D38 D68 Internal Set Point ---
D09 D39 D69 Heater Current 1 Value Monitor ---
D10 D40 D70 MV Monitor (Heating) ---
D11 D41 D71 Not used. ---
··· ··· ··· ··· ···
D14 D44 D74 Not used. ---
* If the default settings are used and a sensor is not connected, the PV display on the E5CC will show an input
error (s.err) and the process value in the upload area will be 1320 (528 hex).

z Changing E5CC Settings

(1) We will check the area that is used to change E5CC set values.
The area that is used to change the set value is called the download area.
D15 to D29 is the download area for the No. 0 Controller, D45 to D59 is the download area
for the No. 1 Controller, and D75 to D89 is the download area for the No. 2 Controller.

No.0

No.1

No.2

6 - 46 E5@C Digital Temperature Controllers Communications Manual (H175)

 6 Programless Communications

With the default settings, the following parameters are set for the download areas.

No.0 No.1 No.2 Parameter Value (E5CC default settings)

D15 D45 D75 Request Flag (fixed) 1 (0001 hex)
D16 D46 D76 Operation Command Code (fixed) 0 (0000 hex)
D17 D47 D77 Set Point 0 (0000 hex)
D18 D48 D78 Proportional Band 80 (0050 hex)
D19 D49 D79 Integral Time 233 (00E9 hex)
D20 D50 D80 Derivative Time 40 (0028 hex)
D21 D51 D81 Alarm Value 1 0 (0000 hex)
D22 D52 D82 Alarm Value Upper Limit 1 0 (0000 hex)
D23 D53 D83 Alarm Value Lower Limit 1 0 (0000 hex)

6-6 Connecting to MELSEC Q-series PLCs

D24 D54 D84 Alarm Value 2 0 (0000 hex)
D25 D55 D85 Alarm Value Upper Limit 2 0 (0000 hex)
D26 D56 D86 Alarm Value Lower Limit 2 0 (0000 hex)
D27 D57 D87 Heater Burnout Detection 1 0 (0000 hex)
D28 D58 D88 Process Value Input Shift 0 (0000 hex)
D29 D59 D89 SP Ramp Set Value 0 (0000 hex)

(2) We will initialize the download areas with the set values from the E5CC Controllers.
The download areas have not been initialized, so we will initialize them with the set values
from the E5CC Controllers.
Double-click D15 (Request Flag) on the Device Memory Dialog Box. The following dialog
box is displayed. Enter 2 (Initialize Download Areas), click the Set Button, and then click the
Close Button.
6

6-6-5 Checking Operation

(3) We will confirm that the download areas have been initialized.
When initialization is completed, D0 (Response Flag) will change to 1 (Normal End) and
D15 (Request Flag) will automatically change to 1 (Enable Writing). Check the download
area to see if it has been initialized to the values given in the above table.
Confirm this for the No. 1 and No. 2 Controllers as well.

E5@C Digital Temperature Controllers Communications Manual (H175) 6 - 47

6 Programless Communications

(4) We will change the set point for the No. 0 Controller.
Double-click D17 (Set Point) in the Device Memory Dialog Box, enter 100 (64 hex) for the
value, click the Set Button, and then click the Close Button. Confirm that D0 (Request Flag)
remains at 1 (Enable Writing) and that the SV Display on the No. 0 Controller changes to
100.
Confirm this for the No. 1 and No. 2 Controllers as well.

Stopping the E5CC Controllers

(1) We will run the No. 0 Controller.
Change the RUN/STOP parameter (r-s) in the operation level of the E5CC to RUN (run).
For a Controller with event inputs, the Event Input 2 Assignment parameter (ev-2) in the
initial setting level is set to RUN/STOP (stop), so the RUN/STOP parameter will not be dis-
played. Change the Event Input 2 Assignment parameter to NONE (none), and then
change the RUN/STOP parameter to RUN.

(2) We will switch the No. 0 Controller to STOP.

In the Device Memory Dialog Box, make sure that D15 (Request Flag) is 1 (Enable Writing)
and then double-click D16 (Operation Command Code). Select the HEX Option, enter 0101
hex (STOP), click the Set Button, and then click the Close Button. D16 will change to 0, D0
(Response Flag) will remain at 1 (Enable Writing), and “STOP” will be displayed on the No.
0 Controller. Confirm this for the No. 1 and No. 2 Controllers as well. For details on other
operation command codes, refer to 6-3-4 Operation Command Codes.

6 - 48 E5@C Digital Temperature Controllers Communications Manual (H175)

 Component Communications
Ver.1.1
This section describes component communications for the E5@C.

7-1 Component Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7-1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7-1-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7-1-3 E5@C Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7-2 Operation for Component Communications . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7-3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

E5@C Digital Temperature Controllers Communications Manual (H175) 7-1

7 Component Communications

7-1 Component Communications

7-1-1 Introduction
You can use component communications to connect two or more E5@C Controllers via RS-485 and
then change the set points or RUN/STOP status for all of the Controllers at the same time. If you
change the set point or RUN/STOP status of the master (i.e., the Controller with a communications unit
number of 0), the set points or RUN/STOP status of all of the slaves (i.e., the Controllers with communi-
cations unit numbers other than 0) that are connected via RS-485 will change automatically. When you
change the set points, the set point from the master can be multiplied by a factor or offset at each slave.
You can also copy the parameter settings in the master to the slaves.

All slaves from 1 to n are

automatically changed in
Master changed to order to RUN status.
RUN status.

RUN RUN
C C C

25 25 25
0 0 0

0: Master 1: Slave n: Slave

Up to 32 Controllers

The set point of each

Set point of master slave can be calculated.
changed to 100.

SP=90 SP=120
C C C

25 25 25
0 0 0

0: Master 1: Slave n: Slave

Note: To use component communications, the input type and, if an analog input is used, the decimal point position
must be set to the same values for all of the E5@C Controllers. The operation will not work correctly if the
position of the decimal point is different.

7-1-2 Wiring
Wire the E5@C Controllers as shown below.
120 Ω (1/2 W) 120 Ω (1/2 W)
terminating resistance B(+) B(+) B(+) B(+) terminating resistance

13 13 13 13

14 14 14 14
A(−) A(−) A(−) A(−)

No.0 No.1 No.2 No.n

7-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 7 Component Communications

7-1-3 E5@C Setup

The parameters that are used for component communications are shown with a gray background in the
following diagram. All of these parameters are displayed if you set the Protocol Setting parameter to
cmp. (Some of the parameters are always displayed.)
This section describes the parameters that are used to calculate the set point. The other parameters
are the same as for programless communications. Refer to 6-2 E5@C Setup. To use component com-
munications, the input type and, if an analog input is used, the decimal point position must be set to the
same values for all of the E5@C Controllers. The operation will not work correctly if the position of the
decimal point is different.

Power ON Adjustment Level

Press O Key
for less than 1 s.
l.adj Adjustment Level
Operation Level 1234 Display

M
25 at AT Execute/Cancel
0
off

7-1 Component Communications

M
cmwt Communications
on Writing*
M

Press O Key Press O Key

for at least 3 s. for at least 1 s.

Communications Setting Level

Press O Key
for less than 1 s.
Protocol Setting*
psel
Initial Setting Level cmp

M
in-t u-no Communications
5 0 Unit No.*
M
bps
57.6
Communications
Baud Rate* 7
M
sdwt Send Data Wait
20 Time*
M

7-1-3 E5@C Setup

Communications unit No. = 0 (master) Communications unit No. ≠ 0 (slave)

Highest
maxu Communications sps SP Slope
0 1.000
Unit No.
M M
Receive Data
rwat Wait Time spos SP Offset
1000 0.0

M M
Copy
copy
off

* These parameters are displayed regardless of the setting of the Protocol Setting parameter.
Note: The Communications Data Length, Communications Stop Bits, and Communications Parity parameters in
the communications setting level are not displayed.

E5@C Digital Temperature Controllers Communications Manual (H175) 7-3

7 Component Communications

SP Calculations
The set point (SP) of a slave can be calculated from the set point of the master as shown below. The
slave performs the calculation only during operation. The value is not written to the slave if it exceeds
the set point limiter.

During operation: Slave SP = Master SP × SP Slope + SP Offset

When stopped: Slave SP = Master SP

Communications Setting Level

Display condition: The Protocol Setting parameter must be set to cmp and the Communications Unit No.
parameter must not be set to 0 (0 = master).

Displayed
Parameter name Setting range Unit Default
characters
SP Slope sps 0.001 to 9.999 None 1.000
SP Offset spos Temperature input: −199.9 to 999.9 EU 0.0
Analog input: −1,999 to 9,999*
* The decimal point position depends on the Decimal Point parameter setting.

7-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 7 Component Communications

7-2 Operation for Component

Communications
Only two parameter settings can be sent from the master to the slaves: the Set Point (SP) and the
RUN/STOP parameters.
If the set point or the RUN/STOP status is changed at the master, the new value is sent to the slaves
starting with the slave with communications unit number 1 and continuing on to the slave with the high-
est communications unit number. The master sends values only during operation. Values are not sent
while in the initial setting level.
If the set point or the RUN/STOP status is changed again while sending a previous value to the slaves,

7-2 Operation for Component Communications

the original value will not be transferred correctly. Always wait for a value to be sent to all of the slaves
before you change the set point or RUN/STOP status again.

Component
Levels
communications
Operation level, adjustment level, manual control level, Setting area 0 Operates
monitor/setting item level, and protect level
Initial setting level, communications setting level, advanced Setting area 1 Stops
function setting level, and calibration level

For component communications, the master sends the value in order starting from slave 1. There will
be a delay of up to 30 ms between when the set point or RUN/STOP status is sent to all of the slaves. If
this delay is too long, consider using event inputs to change the set points or to change the RUN/STOP
status.
If communications with a slave fail, the master will retry communications twice. If communications still
fail, it will move to processing the next slave. To see if the value was sent correctly, check the display of
the Set Point or STOP parameter on each slave.
7

z Exception Processing
• If the multi-SP is changed, the set point is sent to each slave.
• This function is disabled in the following cases:
Master
• During operation with a remote SP
• When changing the set point for SP tracking
• SPs are not calculated when operation is stopped.
• The value from the master is not received in the following cases.
• When the set point from the master or the results of set point calculation exceeds the set
point limiter of the slave.
Slaves
• When Communications Writing parameter is set to “OFF”
• When RUN/STOP is assigned to an event input (Changes in the set point will be
received.)
• When a communications error occurs three times in a row

E5@C Digital Temperature Controllers Communications Manual (H175) 7-5

7 Component Communications

7-3 Troubleshooting
Possible problems that can occur with component communications and corrective actions are given in
the following table.

Status Cause and corrective action Page

The set point or RUN/STOP status The wiring to the slave is not correct. 7-2
will not change for a slave (i.e., a The communications settings for the slave are not 7-3
Controller with a communications correct.
unit number other than 0). • The Protocol Setting parameter is not set to cmp.
• The Communications Unit No. parameter is set to
the same value as another slave.
• The setting of the Communications Baud Rate
parameter is not the same as the other slaves.
• The Highest Communications Unit No. parameter
is not set to the highest communications unit
number that is actually set.
• The Communications Writing parameter is set to
OFF.
◆ When the RUN/STOP Does Not Change 7-5
RUN/STOP is assigned to an event input for the
slave.
◆ When the Set Point Does Not Change 7-4
The set point from the master or the results of set 7-5
point calculations exceeds the set point limiter of the
slave.
The set points or the RUN/STOP The wiring to the master (i.e., the Controller with 7-2
status will not change for any of the communications unit number 0) is not correct.
slaves. The communications settings in the master are not 7-3
correct.
• The Protocol Setting parameter is not set to cmp.
• The Communications Unit No. parameter is not set
to 0.
• The Communications Baud Rate parameter is not
set to the same value as the slaves.
• The Highest Communications Unit No. parameter
is not set to the highest communications unit
number that is actually set.
The set point is not calculated. • The SP Slope or SP Offset parameter is not set 7-4
correctly.
• The set point was changed at the master when the
slave was stopped (setting area 1).
It is sometimes not possible to There may be noise interference. Connect 7-2
change the set points or RUN/STOP terminating resistance to both ends of the
status. communications line.
Note: For information on other problems, refer to A-2 Troubleshooting.

7-6 E5@C Digital Temperature Controllers Communications Manual (H175)

 Appendices

A-1 ASCII List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

A-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

E5@C Digital Temperature Controllers Communications Manual (H175) A-1

A Appendices

A-1 ASCII List

b8

b7 0 0 0 0 1 1 1 1

b6 0 0 1 1 0 0 1 1

b5 0 1 0 1 0 1 0 1

b8 b7 b6 b5 b4 b3 b2 b1 0 1 2 3 4 5 6 7

0 0 0 0 0 NUL DLE SPACE 0 P ‘ p

Even parity

0 0 0 1 1 SOH DC1 ! 1 A Q a q
0 0 1 0 2 STX DC2 ” 2 B R b r
0 0 1 1 3 ETX DC3 # 3 C S c s
0 1 0 0 4 E0T DC4 $ 4 D T d t
0 1 0 1 5 ENQ NAK % 5 E U e u
0 1 1 0 6 ACK SYN & 6 F V f v
0 1 1 1 7 BEL ETB ’ 7 G W g w
1 0 0 0 8 BS CAN 8 H X h x
1 0 0 1 9 HT EM 9 I Y i y
1 0 1 0 A LF SUB J Z j z
1 0 1 1 B VT ESC K k {
1 1 0 0 C FF FS , L l
1 1 0 1 D CR GS - M m }
1 1 1 0 E S0 RS . N n
1 1 1 1 F SI US ? O _ o DEL

A-2 E5@C Digital Temperature Controllers Communications Manual (H175)

 A Appendices

A-2 Troubleshooting
Before Requesting Repairs

If communications are not functioning properly, check the items in the following table before requesting
repairs. If normal operation cannot be restored even after checking everything, return the product to
your OMRON representative.
Problem: Communications are not possible or communications errors occur.

Item Confirmation Page

The communications wiring is not Correct the wiring. 1-4
correct.
The communications line has Connect the communications line securely and tighten the ---
become disconnected. screws.
The communications cable is Replace the cable. ---
broken.
The communications cable is too The total cable length is 500 m maximum for RS-485 1-4
long. communications.
The wrong communications cable Use a shielded, AWG24 to AWG18 (cross-sectional area of 1-4
has been used. 0.205 to 0.823 mm2) twisted-pair cable for the
communications cable.
Too many communications When 1:N, RS-485 communications are used, a maximum 1-4
devices are connected to the of 32 nodes may be connected, including the host node.

A-2 Troubleshooting
communications path.
An end node has not been set at Set or connect terminating resistance at each end of the 1-4
each end of the communications line. If the E5@C is the end node, 120-Ω (1/2-W)
line. terminating resistance is used. Be sure that the combined
resistance with the host device is 54 Ω minimum.
The specified power supply Supply the specified power supply voltage. ---
voltage is not being supplied to
the Controller.
The specified power supply Supply the specified power supply voltage. --- A
voltage is not being supplied to
an Interface Converter (e.g., the
K3SC).
The same baud rate and Set the same values for the following on all nodes: baud 1-2
communications method are not rate, protocol, data length, stop bits, and parity.
being used by all of the
Controllers, host devices, and
other nodes on the same
communications line.
The unit number specified in the Use the same unit number. 2-2
command frame is different from 4-2
the unit number set for the
Controller.
The same unit number as the Set each unit number for only one node. 1-4
Controller is being used for
another node on the same
communications line.
There is a mistake in Use a line monitor to check the commands. ---
programming in the host device.
The host device is detecting the Shorten the send data wait time in the Controller or 1-5
absence of a response as an increase the response wait time in the host device.
error before it receives the
response from the Controller.

E5@C Digital Temperature Controllers Communications Manual (H175) A-3

A Appendices

Item Confirmation Page

The host device is detecting the The Controller does not return responses for broadcast or 2-2
absence of a response as an software reset commands. 2-17
error after broadcasting a 4-2
command or sending a software 4-14
reset command.
The host device sent another Always read the response after sending a command ---
command before receiving a (except for broadcast or software reset commands).
response from the Controller.
The host device sent the next Wait for at least 2 ms after receiving a response before 1-2
command too soon after sending the next command.
receiving a response from the
Controller.
The communications line became Initialize the reception buffer in the host device before ---
unstable when the Controller’s sending the first command and after turning OFF the
power was turned ON or power to the Controller.
interrupted, and the host device
read the unstable status as data.
The communications data was Try using a slower baud rate. ---
corrupted by noise from the Separate the communications cable from the source of
environment. noise.
Use a shielded, twisted-pair cable for the communications
cable.
Use as short a communications cable as possible and no
not lay or loop extra cable.
Do not run the communications cable parallel to a power
line to prevent inductive noise.
If noise countermeasures are difficult to implement, use an
Optical Interface.

A-4 E5@C Digital Temperature Controllers Communications Manual (H175)

 Index

E5@C Digital Temperature Controllers Communications Manual (H175) Index-1

Index
A E

addresses Echoback Test

CompoWay/F ........................................................... 2-7 CompoWay/F ..................................................2-7, 2-15
Modbus .................................................................... 4-7 Modbus ...........................................................4-6, 4-15
area definitions .............................................................. 2-6 end codes
areas and first address of linked data ........................... 6-8 CompoWay/F ....................................................2-3, 2-4
ASCII list ........................................................................A-2 error codes
Modbus .................................................................... 4-5
B ETX ............................................................................... 2-2

BCC ........................................................................2-2, 2-3 F

C FINS .............................................................................. 1-2

Four-byte Mode ......................................................4-7, 5-2
command frame function code ................................................................. 4-2
CompoWay/F ........................................................... 2-2 functional upgrades ............................................1-13, 1-14
Modbus .................................................................... 4-2 functions (Modbus)
command text ................................................................ 2-2 detailed description .................................................. 4-8
communications baud rate ..............................1-5, 1-7, 6-7 list ............................................................................ 4-6
communications data
CompoWay/F ....................................................2-4, 3-1 H
Modbus .................................................................... 5-1
communications data length ...................................1-5, 1-7 highest communications unit No. ................................... 6-7
communications monitor ............................................. 6-16 Host Link (FINS) .....................................................6-6, 6-9
communications node number .................................... 6-10
communications parameter setup ................................. 1-6 I
communications parameters ......................................... 1-5
communications parity ............................................1-5, 1-7 interface ......................................................................... 1-3
communications protocol ........................................1-5, 1-7
communications specifications ...................................... 1-2 M
communications stop bits .......................................1-5, 1-7
communications unit No. ............................................... 6-7 MC protocol (format 4) ...........................................6-6, 6-9
communications unit number .................................1-5, 1-7 Modbus ............................................................1-2, 4-1, 5-1
communications writing ............................................... 6-15
component communications .......................................... 7-2 N
Composite Read from Variable Area (CompoWay/F) ... 2-7,
2-10
no response ................................................................... 4-5
Composite Write to Variable Area (CompoWay/F) 2-7, 2-12
node number ................................................................. 2-2
CompoWay/F ...................................................1-2, 2-1, 3-1
number of elements
confirming operation of programless communications 6-19
CompoWay/F ........................................................... 2-7
copying parameter settings ......................................... 6-13
Modbus .................................................................... 4-7
CRC-16 ..................................................................4-2, 4-3
O
D
operation command
data ............................................................................... 4-2 CompoWay/F ........................................................... 2-7
data format Modbus .................................................................. 4-12
CompoWay/F ........................................................... 2-2 operation command codes .......................................... 6-19
Modbus .................................................................... 4-2
description of communications parameters ................... 1-7
P
double-word data ........................................................... 3-2

PDU structure ................................................................ 2-6

PLC ............................................................................... 6-5

Index-2 E5@C Digital Temperature Controllers Communications Manual (H175)

programless communications ....................................... 6-3 Modbus .................................................................... 5-2
protocol setting ....................................................... 1-7, 6-6 Variable Read, Multiple (Modbus) ................................. 4-8
variable type .................................................................. 2-6
R Variable Write, Multiple (Modbus) ............................... 4-10
Variable Write, Single/Operation Command (Modbus) 4-12
range of operation for programless versions ....................................................................... 1-11
communications ....................................................... 6-19
Read Controller Attributes (CompoWay/F) .......... 2-7, 2-13 W
Read Controller Status (CompoWay/F) ............... 2-7, 2-14
Read Variable Area (CompoWay/F) ....................... 2-7, 2-8 wiring ............................................................................. 1-4
receive data wait time ................................................. 6-10 Write Mode .................................................................. 6-20
Request Flag ............................................................... 6-17 Write Variable Area (CompoWay/F) ....................... 2-7, 2-9
response code list (CompoWay/F) .............................. 2-21
Response Flag ............................................................ 6-18
response frame
CompoWay/F ........................................................... 2-3
Modbus .................................................................... 4-4
RS-485 .......................................................................... 1-4

send data wait time ......................................... 1-5, 1-7, 6-7

services (CompoWay/F)
detailed description ................................................. 2-8
list ............................................................................ 2-7
set values (Modbus) ...................................................... 4-7
SID ................................................................................ 2-2
single-word data ............................................................ 3-2
slave address ................................................................ 4-2
SP calculations ............................................................. 7-4
Status
CompoWay/F ......................................................... 3-21
Modbus .................................................................. 5-15
Status 2 (CompoWay/F) .............................................. 3-21
STX ............................................................................... 2-2
sub-address .................................................................. 2-2

transmission procedure ................................................. 1-3

troubleshooting ............................................................. A-3
troubleshooting during component
communications ......................................................... 7-6
troubleshooting during copying operation
under programless communications ........................ 6-14
troubleshooting during programless
communications ....................................................... 6-20
Two-byte Mode ....................................................... 4-7, 5-2
type code (variable type) ............................................... 2-6

upload settings and download settings ....................... 6-10

variable area ................................................................. 4-7

variable area (setting range) list
CompoWay/F ........................................................... 3-2

E5@C Digital Temperature Controllers Communications Manual (H175) Index-3

Index-4 E5@C Digital Temperature Controllers Communications Manual (H175)
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