Omron CS1W-AD041-V1 User manual

OPERATION MANUAL
Cat. No. W345-E1-08
SYSMAC CS/CJ Series
CS1W-AD041-V1/AD081-V1/AD161
CS1W-DA041/DA08V/DA08C
CS1W-MAD44
CJ1W-AD041-V1/AD081-V1
CJ1W-DA021/DA041/DA08V/DA08C
CJ1W-MAD42
Analog I/O Units

SYSMAC CS/CJ Series
CS1W-AD041-V1/AD081-V1/AD161
CS1W-DA041/DA08V/DA08C
CS1W-MAD44
CJ1W-AD041-V1/AD081-V1
CJ1W-DA021/DA041/DA08V/DA08C
CJ1W-MAD42
Analog I/O Units
Operation Manual
Revised July 2005

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v
Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can result in injury to people or dam-
age to property.
!DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury. Additionally, there may be severe property damage.
!WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury. Additionally, there may be severe property damage.
!Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury, or property damage.
OMRON Product References
All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to
an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means
“word” and is abbreviated “Wd” in documentation in this sense.
The abbreviation “PLC” means Programmable Controller. “PC” is used, however, in some Program-
ming Device displays to mean Programmable Controller.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
Note Indicates information of particular interest for efficient and convenient opera-
tion of the product.
1,2,3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.
OMRON, 1999
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 con-
stantly 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.

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vii
TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
6 EC Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
7 Other Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
8 Precautions for the C200H-AD003, C200H-DA003/004, and C200H-MAD01. . xxii
9 Changes to the CJ1W-DA08V/08C and CJ1W-MAD42 . . . . . . . . . . . . . . . . . . . . xxiii
SECTION 1
System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1-3 Function Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SECTION 2
CS-series Analog Input Units . . . . . . . . . . . . . . . . . . . . . . 13
2-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2-6 Analog Input Functions and Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . 52
2-7 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2-8 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
SECTION 3
CJ-series Analog Input Units . . . . . . . . . . . . . . . . . . . . . . 77
3-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
3-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
3-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
3-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
3-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
3-6 Analog Input Functions and Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . 104
3-7 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
3-8 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

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TABLE OF CONTENTS
SECTION 4
CS-series Analog Output Units . . . . . . . . . . . . . . . . . . . . 125
4-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
4-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
4-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
4-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
4-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
4-6 Analog Output Functions and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . 149
4-7 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
4-8 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
SECTION 5
CJ-series Analog Output Unit . . . . . . . . . . . . . . . . . . . . . 169
5-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
5-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
5-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
5-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
5-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
5-6 Analog Output Functions and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . 197
5-7 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
5-8 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
SECTION 6
CS-series Analog I/O Unit . . . . . . . . . . . . . . . . . . . . . . . . 221
6-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
6-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
6-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
6-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
6-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
6-6 Analog Input Functions and Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . 252
6-7 Analog Output Functions and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . 259
6-8 Ratio Conversion Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
6-9 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
6-10 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

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TABLE OF CONTENTS
SECTION 7
CJ-series Analog I/O Unit. . . . . . . . . . . . . . . . . . . . . . . . . 287
7-1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
7-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
7-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
7-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
7-5 Exchanging Data with the CPU Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
7-6 Analog Input Functions and Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . 318
7-7 Analog Output Functions and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . 327
7-8 Ratio Conversion Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
7-9 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
7-10 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Appendices
A Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
B Sample Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
C Data Memory Coding Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401

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TABLE OF CONTENTS

xi
About this Manual:
This manual describes the installation and operation of the CS1W-AD041-V1, CS1W-AD081-V1,
CS1W-AD161, CJ1W-AD041-V1, and CJ1W-AD081-V1 Analog Input Units; the CS1W-DA041, CS1W-
DA08V, CS1W-DA08C, CJ1W-DA021, CJ1W-DA041, CJ1W-DA08V, and CJ1W-DA08C Analog Output
Units; and the CS1W-MAD44 and CJ1W-MAD42 Analog I/O Units. This manual includes the sections
described below.
The input function of CS/CJ-series Analog I/O Units converts analog sensor output to the digital format
and transmits it to CS/CJ-series PLCs. The output function converts digital data from the PLC to the
analog format for output.
Please read this manual and the other manuals related to the CS/CJ-series Analog I/O Units carefully
and be sure you understand the information provided before attempting to install and operate the
Units. The manuals used with the CS/CJ-series Analog I/O Units are listed in the following table. The
suffixes have been omitted from the catalog numbers. Be sure you are using the most recent version
for your area.
Name Cat. No. Contents
SYSMAC CS-series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H
Programmable Controllers Operation Manual
W339 Describes the installation and operation
of the CS-series PLCs.
SYSMAC CS Series
CS1D-CPU@@H CPU Units, CS1D-CPU@@S CPU Units,
CS1D-DPL01 Duplex Unit, CS1D-PA/PD@@@ Power
Supply Unit
CS1D Duplex System Operation Manual
W405 Provides an outline of and describes the
design, installation, maintenance, and
other basic operations for a Duplex Sys-
tem based on CS1D CPU Units.
SYSMAC CJ-series
CJ1G-CPU@@, CJ1G/H-CPU@@H, CJ1M-CPU@@
Programmable Controllers Operation Manual
W393 Describes the installation and operation
of the CJ-series PLCs.
SYSMAC CS/CJ-series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CJ1G-
CPU@@, CJ1G/H-CPU@@H, CJ1M-CPU@@
Programmable Controllers Programming Manual
W394 Describes the programming methods
required to use the functions of the CS/
CJ-series PLCs.
SYSMAC CS/CJ-series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CJ1G-
CPU@@, CJ1G/H-CPU@@H, CJ1M-CPU@@
Programmable Controllers Instructions Reference Manual
W340 Describes the ladder diagram program-
ming instructions supported by CS/CJ-
series PLCs.
SYSMAC WS02-CXPC1-EV50
CX-Programmer Ver. 5.0 Operation Manual
W437 Provides information on how to use the
CX-Programmer, a programming device
that supports the CS/CJ-series PLCs.
SYSMAC CS/CJ-series
CQM1H-PRO01-E, CQM1-PRO01-E, C200H-PRO27-E
Programming Consoles Operation Manual
W341 Provides information on how to program
and operate CS/CJ-series PLCs using a
Programming Console.

xii
Section 1 describes the features and system configurations of the CS/CJ-series Analog I/O Unit.
Section 2 explains how to use the CS1W-AD041-V1/081-V1/161 Analog Input Units.
Section 3 explains how to use the CJ1W-AD041-V1/081-V1 Analog Input Units.
Section 4 explains how to use the CS1W-DA041/08V/08C Analog Output Units.
Section 5 explains how to use the CJ1W-DA021/041/08V/08C Analog Output Units.
Section 6 explains how to use the CS1W-MAD44 Analog I/O Unit.
Section 7 explains how to use the CJ1W-MAD42 Analog I/O Unit.
Appendix A provides details on dimensions.
Appendix B gives programming examples.
Appendix C provides data memory coding sheets.
!WARNING Failure to read and understand the information provided in this manual may result in per-
sonal injury or death, damage to the product, or product failure. Please read each section
in its entirety and be sure you understand the information provided in the section and
related sections before attempting any of the procedures or operations given.

xiii
Read and Understand this Manual
Please read and understand this manual before using the product. 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.

xiv
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.

xv
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.

xvi

xvii
PRECAUTIONS
This section provides general precautions for using the Programmable Controller (PLC) and Analog I/O Units.
The information contained in this section is important for the safe and reliable application of the Analog I/O Unit.
You must read this section and understand the information contained before attempting to set up or operate a PLC
system and Analog I/O Unit.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
6 EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
7 Other Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
8 Precautions for the C200H-AD003, C200H-DA003/004, and C200H-MAD01 xxii
9 Changes to the CJ1W-DA08V/08C and CJ1W-MAD42 . . . . . . . . . . . . . . . . xxiii

xviii
Intended Audience 1
1 Intended Audience
This manual is intended for the following personnel, who must also have
knowledge of electrical systems (an electrical engineer or the equivalent).
• Personnel in charge of installing FA systems
• Personnel in charge of designing FA systems
• Personnel in charge of managing FA systems and facilities
2 General Precautions
The user must operate the product according to the performance specifica-
tions described in the operation manuals.
Before using the product under conditions which are not described in the
manual or applying the product to nuclear control systems, railroad systems,
aviation systems, vehicles, combustion systems, medical equipment, amuse-
ment machines, safety equipment, and other systems, machines, and equip-
ment that may have a serious influence on lives and property if used
improperly, consult your OMRON representative.
Make sure that the ratings and performance characteristics of the product are
sufficient for the systems, machines, and equipment, and be sure to provide
the systems, machines, and equipment with double safety mechanisms.
This manual provides information for programming and operating OMRON
Analog I/O Units. Be sure to read this manual before attempting to use the
software and keep this manual close at hand for reference during operation.
!WARNING It is extremely important that a PLC and all PLC Units be used for the speci-
fied purpose and under the specified conditions, especially in applications that
can directly or indirectly affect human life. You must consult with your OMRON
representative before applying a PLC System to the above-mentioned appli-
cations.
3 Safety Precautions
!WARNING Do not attempt to take any Unit apart while power is being supplied. Doing so
may result in electric shock.
!WARNING Do not touch any of the terminals or terminal blocks while power is being sup-
plied. Doing so may result in electric shock.
!WARNING Provide safety measures in external circuits (i.e., not in the Programmable
Controller), including the following items, in order to ensure safety in the sys-
tem if an abnormality occurs due to malfunction of the PLC or another exter-
nal factor affecting the PLC operation. Not doing so may result in serious
accidents.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
• The PLC will turn OFF all outputs when its self-diagnosis function detects
any error or when a severe failure alarm (FALS) instruction is executed.
As a countermeasure for such errors, external safety measures must be
provided to ensure safety in the system.

xix
Operating Environment Precautions 4
• The PLC outputs may remain ON or OFF due to deposition or burning of
the output relays or destruction of the output transistors. As a counter-
measure for such problems, external safety measures must be provided
to ensure safety in the system.
!WARNING When the 24-VDC output (service power supply to the PLC) is overloaded or
short-circuited, the voltage may drop and result in the outputs being turned
OFF. As a countermeasure for such problems, external safety measures must
be provided to ensure safety in the system.
!Caution When wiring crossovers between terminals, the total current for both terminals
will flow in the line. Check the current capacities of all wires before wiring
crossovers.
!Caution Tighten the screws on the terminal block of the AC Power Supply Unit to the
torque specified in the operation manual. The loose screws may result in
burning or malfunction.
!Caution Execute online edit only after confirming that no adverse effects will be
caused by extending the cycle time. Otherwise, the input signals may not be
readable.
4 Operating Environment Precautions
!Caution Do not operate the control system in the following places:
• Locations subject to direct sunlight.
• Locations subject to temperatures or humidity outside the range specified
in the specifications.
• Locations subject to condensation as the result of severe changes in tem-
perature.
• Locations subject to corrosive or flammable gases.
• Locations subject to dust (especially iron dust) or salts.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to shock or vibration.
!Caution Take appropriate and sufficient countermeasures when installing systems in
the following locations:
• Locations subject to static electricity or other forms of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to possible exposure to radioactivity.
• Locations close to power supplies.
!Caution The operating environment of the PLC System can have a large effect on the
longevity and reliability of the system. Improper operating environments can
lead to malfunction, failure, and other unforeseeable problems with the PLC
System. Be sure that the operating environment is within the specified condi-
tions at installation and remains within the specified conditions during the life
of the system.

xx
Application Precautions 5
5 Application Precautions
Observe the following precautions when using the PLC.
!WARNING Always heed these precautions. Failure to abide by the following precautions
could lead to serious or possibly fatal injury.
• Always connect to a class-3 ground (to 100 Ωor less) when installing the
Units. Not connecting to a class-3 ground may result in electric shock.
• Always turn OFF the power supply to the PLC before attempting any of
the following. Not turning off the power supply may result in malfunction or
electric shock.
• Mounting or dismounting I/O Units, CPU Units, Memory Cassettes, or
any other Units.
• Assembling the Units.
• Setting DIP switch or rotary switches.
• Connecting or wiring the cables.
• Connecting or disconnecting the connectors.
!Caution Failure to abide by the following precautions could lead to faulty operation of
the PLC or the system, or could damage the PLC or PLC Units. Always heed
these precautions.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal
lines, momentary power interruptions, or other causes.
• Always use the power supply voltage specified in this manual. An incor-
rect voltage may result in malfunction or burning.
• Take appropriate measures to ensure that the specified power with the
rated voltage and frequency is supplied. Be particularly careful in places
where the power supply is unstable. An incorrect power supply may result
in malfunction.
• Install external breakers and take other safety measures against short-cir-
cuiting in external wiring. Insufficient safety measures against short-cir-
cuiting may result in burning.
• Do not apply voltages to input sections in excess of the rated input volt-
age. Excess voltages may result in burning.
• Do not apply voltages or connect loads in excess of the maximum switch-
ing capacity to output sections. Excess voltage or loads may result in
burning.
• Be sure that all the mounting screws, terminal screws, and cable connec-
tor screws are tightened to the torque specified in the relevant manuals.
Incorrect tightening torque may result in malfunction.
• Wiring correctly, as indicated in this manual.
• Do not attempt to disassemble, repair, or modify any Units.
• Be sure to confirm that the DIP switch and the data memory (DM) are
properly set.
• Leave the label attached to the Unit when wiring. Removing the label may
result in malfunction.

xxi
EC Directives 6
• Remove the labels after the completion of wiring to ensure proper heat
dissipation. Leaving the label attached may result in malfunction.
• Do not pull on cables and cords and do not bend them past their natural
bending radius.
• Do not place any heavy objects on cables or cords.
• Mount the Unit only after checking the terminal block completely.
• Be sure that the terminal blocks, Memory Units, expansion cables, and
other items with locking devices are properly locked into place. Improper
locking may result in malfunction.
• Check the user program for proper execution before actually running it on
the Unit. Not checking the program may result in an unexpected opera-
tion.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.
• Double-check all the wiring before turning on the power supply. Incorrect
wiring may result in burning.
• Confirm that no adverse effect will occur in the system before attempting
any of the following. Not doing so may result in an unexpected operation.
• Changing the operating mode of the PLC (including the setting of the
startup operating mode).
• Force-setting/force-resetting any bit in memory.
• Changing the present value of any word or any set value in memory.
• Touch a grounded metal object to discharge static electricity from your
body before touching any Unit.
6 EC Directives
CS/CJ-series Units conform to EC Directives. For the system to conform to
EC Directives, however, the following precautions must be adhered to.
• CS/CJ-series Units must be installed within control panels.
• Use reinforced insulation or double insulation for the DC power supplies
used for the I/O power supplies.
• CS/CJ-series Units that meet EC Directives also meet the Common Emis-
sion Standard (EN61000-6-4). The measure necessary to ensure that
standards, such as the radiated emission standard (10 m), are met, how-
ever, will vary depending on the overall configuration of the control panel,
the other devices connected to the control panel, and wiring. You must
therefore confirm that EC Directives are met for the overall machine or
device.