Omron CS1G/H-CPUxx-EV1, CS1D-CPUxxH, CS1G/H-CPUxx-H, CS1D-CPUxxS, CJ1G/H-CPUxxH Programming Manual

Cat. No. W394-E1-08

PROGRAMMING MANUAL

SYSMAC CS Series

CS1G/H-CPU

䡺䡺

-EV1

CS1G/H-CPU

䡺䡺

-H

CS1D-CPU

䡺䡺

H

CS1D-CPU

䡺䡺

S

SYSMAC CJ Series

CJ1G-CPU

䡺䡺

CJ1G/H-CPU

䡺䡺

H

CJ1G-CPU

䡺䡺

P

CJ1M-CPU

䡺䡺

Programmable Controllers

SYSMAC CS Series

CS1G/H-CPU@@-EV1
CS1G/H-CPU@@H
CS1D-CPU@@H
CS1D-CPU@@S

SYSMAC CJ Series

CJ1G-CPU@@
CJ1G/H-CPU@@H
CJ1G-CPU@@P
CJ1M-CPU@@

Programmable Controllers

Programming Manual

Revised June 2005

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Notice:

r
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OMRON products are manufactured for use according to proper procedures
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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 Programming Device displays to mean Programmable Control­ler.

Visual Aids

© OMRON, 2001

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
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.

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.

v

Unit Versions of CS/CJ-series CPU Units

Unit Versions A “unit version” has been introduced to manage CPU Units in the CS/CJ

Series according to differences in functionality accompanying Unit upgrades.
This applies to the CS1-H, CJ1-H, CJ1M, and CS1D CPU Units.

Notation of Unit Versions
on Products

CS/CJ-series CPU Unit

The unit version is given to the right of the lot number on the nameplate of the
products for which unit versions are being managed, as shown below.

Product nameplate

CS1H-CPU67H

CPU UNIT

Lot No.

Lot No. 040715 0000 Ver.3.0

OMRON Corporat ion MADE IN JAPA N

Unit version
Example for Unit version 3.0

• CS1-H, CJ1-H, and CJ1M CPU Units (except for low-end models) manu­factured on or before November 4, 2003 do not have a unit version given
on the CPU Unit (i.e., the location for the unit version shown above is
blank).

• The unit version of the CS1-H, CJ1-H, and CJ1M CPU Units, as well as
the CS1D CPU Units for Single-CPU Systems, begins at version 2.0.

• The unit version of the CS1D CPU Units for Duplex-CPU Systems, begins
at version 1.1.

• CPU Units for which a unit version is not given are called Pre-Ver. @.@
CPU Units, such as Pre-Ver. 2.0 CPU Units and Pre-Ver. 1.1 CPU Units.

Confirming Unit Versions
with Support Software

CX-Programmer version 4.0 can be used to confirm the unit version using one
of the following two methods.

• Using the PLC Information

• Using the Unit Manufacturing Information (This method can be used for
Special I/O Units and CPU Bus Units as well.)

Note CX-Programmer version 3.3 or lower cannot be used to confirm unit versions.

PLC Information

• If you know the device type and CPU type, select them in the Change
PLC Dialog Box, go online, and select PLC - Edit - Information from the

menus.

• If you don't know the device type and CPU type, but are connected
directly to the CPU Unit on a serial line, select PLC - Auto Online to go
online, and then select PLC - Edit - Information from the menus.

In either case, the following PLC Information Dialog Box will be displayed.

vi

Unit version

Use the above display to confirm the unit version of the CPU Unit.

Unit Manufacturing Information

In the IO Table Window, right-click and select Unit Manufacturing informa­tion - CPU Unit.

The following Unit Manufacturing information Dialog Box will be displayed.

vii

Unit version

Use the above display to confirm the unit version of the CPU Unit connected
online.

Using the Unit Version
Labels

The following unit version labels are provided with the CPU Unit.

These labels can be attached to the front of previous CPU Units to differenti­ate between CPU Units of different unit versions.

viii

Unit Version Notation

In this manual, the unit version of a CPU Unit is given as shown in the follow­ing table.

Product nameplate

Meaning

Designating individual
CPU Units (e.g., the
CS1H-CPU67H)

Designating groups of
CPU Units (e.g., the
CS1-H CPU Units)

Designating an entire
series of CPU Units
(e.g., the CS-series CPU
Units)

CPU Units on which no unit version is

given

Lot No. XXXXXX XXXX

OMRON Corporation MADE IN JAPAN

Pre-Ver. 2.0 CS1-H CPU Units CS1H-CPU67H CPU Unit Ver. @.@

Pre-Ver. 2.0 CS1-H CPU Units CS1-H CPU Units Ver. @.@

Pre-Ver. 2.0 CS-series CPU Units CS-series CPU Units Ver. @.@

Units on which a version is given

Lot No. XXXXXX XXXX

(Ver. @.@)

Ver. @ @ .@

ix

Unit Versions and Lot Numbers

Series Model Data of manufacture

Earlier Sept. 2003 Oct. 2003 Nov. 2003 Dec. 2003 Jun. 2004 Later

CS
Series

CS1 CPU Units CS1@-

CPU@@

No unit version

CJ
Series

CS1-V1 CPU
Units

CS1-H CPU Units CS1@-

CS1D
CPU
Units

CJ1 CPU Units CJ1G-

CJ1-H CPU Units CJ1@-

CJ1M CPU Units
except low-end
models

CPU
Units for
Duplex­CPU
System

CPU
Units for
Single­CPU
System

CS1@-
CPU@@-V1

CPU@@H

CS1D­CPU@@H

CS1D­CPU@@S

CPU@@

CPU@@H

CJ1M­CPU@@

No unit version

Pre-Ver. 2.0 CPU Units

Pre-Ver. 1.1 CPU Units

Pre-Ver. 2.0 CPU Units

Pre-Ver. 2.0 CPU Units

Pre-Ver. 2.0 CPU Units

CPU Units Ver. 2.0
(Lot No.: 031105 on)

CPU Units Ver.1.1
(Lot No.: 031120 on)

CPU Units Ver. 2.0
(Lot No.: 031215 on)

CPU Units Ver. 2.0
(Lot No.: 031105 on)

CPU Units Ver. 2.0
(Lot No.: 031105 on)

CPU Units Ver.

3.0 (Lot No.:
040622 on)

CPU Units Ver.

3.0 (Lot No.:
040623 on)

CPU Units Ver.

3.0 (Lot No.:
040624 on)

Sup­port
Soft­ware

x

CJ1M CPU Units,
low-end models

CX-Programmer WS02-

CJ1M­CPU11/21

CXPC1­EV@

Unit Ver. 2.0
(Lot No.: 031002 on)

Ver.3.2 Ver.3.3 Ver.4.0 Ve r.5 .0

CPU Units Ver.

3.0 (Lot No.:
040629 on)

Function Support by Unit Version

CS1-H CPU Units (CS1@-CPU@@H)

Function Unit version

Pre-Ver. 2.0 CPU

Units

Downloading and Uploading Individual Tasks --- OK
Improved Read Protection Using Passwords --- OK
Write Protection from FINS Commands Sent to CPU Units via Net-

works
Online Network Connections without I/O Tables --- OK
Communications through a Maximum of 8 Network Levels --- OK
Connecting Online to PLCs via NS-series PTs OK from lot number

Setting First Slot Words OK for up to 8 groups OK for up to 64 groups
Automatic Transfers at Power ON without a Parameter File --- OK
Automatic Detection of I/O Allocation Method for Automatic Transfer

at Power ON
Operation Start/End Times --- OK
New Applica-

tion Instructions

MILH, MILR, MILC --- OK
=DT, <>DT, <DT, <=DT, >DT, >=DT --- OK
BCMP2 --- OK
GRY OK from lot number

TPO --- OK
DSW, TKY, HKY, MTR, 7SEG --- OK
EXPLT, EGATR, ESATR, ECHRD, ECHWR --- OK
Reading/Writing CPU Bus Units with IORD/IOWR OK from lot number

PRV2 --- ---

--- OK

030201

--- ---

030201

030418

CPU Units Ver. 2.0

OK

OK

OK

xi

CS1D CPU Units

Function CS1D CPU Units for Duplex-CPU Systems

Pre-Ver. 1.1 CPU

Functions
unique to
CS1D CPU
Units

Downloading and Uploading Individual Tasks --- --- OK
Improved Read Protection Using Passwords --- --- OK
Write Protection from FINS Commands Sent

to CPU Units via Networks
Online Network Connections without I/O

Ta bl e s
Communications through a Maximum of 8

Network Levels
Connecting Online to PLCs via NS-series PTs --- --- OK
Setting First Slot Words --- --- OK for up to 64

Automatic Transfers at Power ON without a
Parameter File

Automatic Detection of I/O Allocation Method
for Automatic Transfer at Power ON

Operation Start/End Times --- OK OK
New Applica-

tion Instruc­tions

Duplex CPU Units OK OK --­Online Unit Replacement OK OK OK
Duplex Power Supply Units OK OK OK
Duplex Controller Link Units OK OK OK
Duplex Ethernet Units --- OK OK

--- --- OK

--- --- OK

--- --- OK

--- --- OK

--- --- ---

MILH, MILR, MILC --- --- OK
=DT, <>DT, <DT, <=DT, >DT,

>=DT
BCMP2 --- --- OK
GRY --- --- OK
TPO --- --- OK
DSW, TKY, HKY, MTR, 7SEG --- --- OK
EXPLT, EGATR, ESATR,

ECHRD, ECHWR
Reading/writing CPU Bus

Units with IORD/IOWR
PRV2 --- --- ---

--- --- OK

--- --- OK

--- --- OK

(CS1D-CPU@@H)

CPU Unit Ver. 1.1 CPU Unit Ver. 2.0

Units

CS1D CPU Units

for Single-CPU

Systems

(CS1D-CPU@@S)

groups

xii

CJ1-H/CJ1M CPU Units

Function CJ1-H CPU Units

Downloading and Uploading
Individual Tasks

Improved Read Protection
Using Passwords

Write Protection from FINS
Commands Sent to CPU Units
via Networks

Online Network Connections
without I/O Tables

Communications through a
Maximum of 8 Network Levels

Connecting Online to PLCs via
NS-series PTs

Setting First Slot Words --- OK --- OK OK
Automatic Transfers at Power

ON without a Parameter File
Automatic Detection of I/O Allo-

cation Method for Automatic
Transfer at Power ON

Operation Start/End Times --- OK --- OK OK
New

Applica­tion
Instruc­tions

MILH, MILR, MILC --- OK --- OK OK
=DT, <>DT, <DT,

<=DT, >DT, >=DT
BCMP2 --- OK OK OK OK
GRY OK from lot

TPO --- OK --- OK OK
DSW, TKY, HKY,

MTR, 7SEG
EXPLT, EGATR,

ESATR, ECHRD,
ECHWR

Reading/Writing
CPU Bus Units with
IORD/IOWR

PRV2 --- --- --- OK, but only for

--- OK --- OK OK

--- OK --- OK OK

--- OK --- OK OK

OK, but only if
I/O table alloca­tion at power
ON is set

OK for up to 8
groups

OK from lot
number 030201

--- OK --- OK OK

--- OK --- OK OK

--- OK --- OK OK

number 030201

--- OK --- OK OK

--- OK --- OK OK

--- OK --- OK OK

(CJ1@-CPU@@H)

Pre-Ver. 2.0

CPU Units

CPU Units Ver.

2.0

OK OK, but only if

OK for up to 64
groups

OK OK from lot

OK OK from lot

I/O table alloca­tion at power
ON is set

OK for up to 8
groups

number 030201

number 030201

CJ1M CPU Units,

except low-end models

(CJ1M-CPU@@)

Pre-Ver. 2.0

CPU Units

CPU Units Ver.

OK OK

OK for up to 64
groups

OK OK

OK OK

models with
built-in I/O

2.0

CJ1M CPU

Units, low-end

models

(CJ1M-

CPU11/21)

CPU Units Ver.

2.0

OK for up to 64
groups

OK, but only for
models with
built-in I/O

xiii

Functions Supported by Unit Version 3.0 or Later

CS1-H CPU Units (CS1@-CPU@@H)

Function Unit version

Pre-Ver. 2.0, Ver. 2.0 Ver. 3.0

Function blocks (supported for CX-Programmer Ver. 5.0 or higher) --- OK
Serial Gateway (converting FINS commands to CompoWay/F com-

mands at the built-in serial port)
Comment memory (in internal flash memory) --- OK
Expanded simple backup data --- OK
New Applica-

tion Instructions

Additional
instruction func­tions

TXDU(256), RXDU(255) (support no-protocol
communications with Serial Communications
Units with unit version 1.2 or later)

Model conversion instructions: XFERC(565),
DISTC(566), COLLC(567), MOVBC(568),
BCNTC(621)

Special function block instructions: GETID(286) --- OK
TXD(235) and RXD(236) instructions (support no-

protocol communications with Serial Communica­tions Boards with unit version 1.2 or later)

CS1D CPU Units Unit version 3.0 is not supported.
CJ1-H/CJ1M CPU Units (CJ1@-CPU@@H, CJ1G-CPU@@P, C J1 M- CP U @@)

Function Unit version

Function blocks (supported for CX-Programmer Ver. 5.0 or higher) --- OK
Serial Gateway (converting FINS commands to CompoWay/F com-

mands at the built-in serial port)
Comment memory (in internal flash memory) --- OK
Expanded simple backup data --- OK
New Applica-

tion Instructions

Additional
instruction func­tions

TXDU(256), RXDU(255) (support no-protocol
communications with Serial Communications
Units with unit version 1.2 or later)

Model conversion instructions: XFERC(565),
DISTC(566), COLLC(567), MOVBC(568),
BCNTC(621)

Special function block instructions: GETID(286) --- OK
PRV(881) and PRV2(883) instructions: Added

high-frequency calculation methods for calculat­ing pulse frequency. (CJ1M CPU Units only)

--- OK

--- OK

--- OK

--- OK

Pre-Ver. 2.0, Ver. 2.0 Ver. 3.0

--- OK

--- OK

--- OK

--- OK

xiv

Unit Versions and Programming Devices

CX-Programmer version 4.0 or higher must be used to enable using the func­tions added for CPU Unit version 2.0.

CX-Programmer version 5.0 or higher must be used to enable using function
blocks added for CPU Unit version 3.0.

The following tables show the relationship between unit versions and CX-Pro­grammer versions.

Unit Versions and Programming Devices

CPU Unit Functions CX-Programmer Program-

CJ1M CPU Units,
low-end models,
unit Ver. 2.0

CS1-H, CJ1-H,
and CJ1M CPU
Units except low­end models, unit
Ver. 2. 0

CS1D CPU Units
for Single-CPU
Systems, unit Ver.

2.0
CS1D CPU Units

for Duplex-CPU
Systems, unit
Ver.1.

CS/CJ-series unit
Ver. 3. 0

Functions added
for unit version

2.0
Functions added

for unit version

2.0

Functions added
for unit version

2.0

Functions added
for unit version

1.1

Function block
functions added
for unit version

3.0

Ver. 3.2

or lower

Using new functions --- --- OK OK No
Not using new functions --- OK OK OK

Using new functions --- --- OK OK
Not using new functions OK OK OK OK

Using new functions --- --- OK OK
Not using new functions OK

Using new functions --- --- OK OK
Not using new functions OK OK OK OK

Using function blocks --- --- --- OK
Not using function blocks OK OK OK OK

Ver. 3.3 Ver. 4.0 Ver. 5.0

or higher

ming Con-

sole

restrictions

Note As shown above, there is no need to upgrade to CX-Programmer version 4.0

as long as the functions added for unit version 2.0 or unit version 1.1 are not
used.

Device Type Setting The unit version does not affect the setting made for the device type on the

CX-Programmer. Select the device type as shown in the following table
regardless of the unit version of the CPU Unit.

Series CPU Unit group CPU Unit model Device type setting on

CS Series CS1-H CPU Units

CS1D CPU Units for Duplex-CPU Systems CS1D-CPU@@H CS1D-H (or CS1H-H)
CS1D CPU Units for Single-CPU Systems

CJ Series CJ1-H CPU Units

CJ1M CPU Units

CS1G-CPU@@H CS1G-H

CS1H-CPU@@H CS1H-H

CS1D-CPU@@S CS1D-S
CJ1G-CPU@@H CJ1G-H

CJ1H-CPU@@H CJ1H-H

CJ1M-CPU@@ CJ1M

CX-Programmer Ver. 4.0 or higher

xv

Troubleshooting Problems with Unit Versions on the CX-Programmer

Problem Cause Solution

After the above message is displayed, a compiling
error will be displayed on the Compile Tab Page in the
Output Window.

“????” is displayed in a program transferred from the
PLC to the CX-Programmer.

An attempt was made using CX­Programmer version 4.0 or higher
to download a program contain­ing instructions supported only by
CPU Units Ver. 2.0 or later to a
Pre-Ver. 2.0 CPU Units.

An attempt was made using CX­Programmer version 4.0 or higher
to download a PLC Setup con­taining settings supported only by
CPU Units Ver. 2.0 or later (i.e.,
not set to their default values) to a
Pre-Ver. 2.0 CPU Units.

CX-Programmer version 3.3 or
lower was used to upload a pro­gram containing instructions sup­ported only by CPU Units Ver. 2.0
or later from a CPU Unit Ver. 2.0
or later.

Check the program or change
the CPU Unit being down­loaded to a CPU Unit Ver. 2.0
or later.

Check the settings in the PLC
Setup or change the CPU Unit
being downloaded to a CPU
Unit Ver. 2.0 or later.

The new instructions cannot
be uploaded using CX-Pro­grammer version 3.3 or lower.
Use CX-Programmer version

4.0 or higher.

xvi

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvii

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxx

6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiv

SECTION 1

CPU Unit Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1-1 Initial Setup (CS1 CPU Units Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 Using the Internal Clock (CS1 CPU Units Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1-3 Internal Structure of the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-4 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1-5 Programs and Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1-6 Description of Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SECTION 2

Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2-1 Basic Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2-2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

2-3 Checking Programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

SECTION 3

Instruction Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

3-1 Sequence Input Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

3-2 Sequence Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

3-3 Sequence Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

3-4 Timer and Counter Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

3-5 Comparison Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

3-6 Data Movement Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3-7 Data Shift Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3-8 Increment/Decrement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

3-9 Symbol Math Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

3-10 Conversion Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

3-11 Logic Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

3-12 Special Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

3-13 Floating-point Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

3-14 Double-precision Floating-point Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

3-15 Table Data Processing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

3-16 Data Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

3-17 Subroutine Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

3-18 Interrupt Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

3-19 High-speed Counter and Pulse Output Instructions (CJ1M-CPU21/22/23 Only) . . . . . . . . 130

3-20 Step Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

3-21 Basic I/O Unit Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

3-22 Serial Communications Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

3-23 Network Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

3-24 File Memory Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

3-25 Display Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

3-26 Clock Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

xvii

TABLE OF CONTENTS

3-27 Debugging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

3-28 Failure Diagnosis Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142

3-29 Other Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

3-30 Block Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

3-31 Text String Processing Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

3-32 Task Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

3-33 Model Conversion Instructions (CPU Unit Ver. 3.0 or Later Only) . . . . . . . . . . . . . . . . . . . 154

3-34 Special Function Block Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

SECTION 4

Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

4-1 Task Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

4-2 Using Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

4-3 Interrupt Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

4-4 Programming Device Operations for Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

SECTION 5

File Memory Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

5-1 File Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

5-2 Manipulating Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

5-3 Using File Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

SECTION 6

Advanced Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

6-1 Cycle Time/High-speed Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

6-2 Index Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

6-3 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

6-4 Changing the Timer/Counter PV Refresh Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

6-5 Using a Scheduled Interrupt as a High-precision Timer (CJ1M Only). . . . . . . . . . . . . . . . . 313

6-6 Startup Settings and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315

6-7 Diagnostic Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326

6-8 CPU Processing Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331

6-9 Peripheral Servicing Priority Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336

6-10 Battery-free Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342

6-11 Other Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344

SECTION 7

Program Transfer, Trial Operation, and Debugging . . . . . 347

7-1 Program Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348

7-2 Trial Operation and Debugging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348

Appendices

A PLC Comparison Charts: CJ-series, CS-series, C200HG/HE/HX,

CQM1H, CVM1, and CV-series PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357

B Changes from Previous Host Link Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393

xviii

About this Manual:

This manual describes the programming of the CPU Units for CS/CJ-series Programmable Controllers
(PLCs) and includes the sections described on the following page. The CS Series and CJ Series are
subdivided as shown in the following table.

Unit CS Series CJ Series

CPU Units CS1-H CPU Units: CS1H-CPU@@H

CS1 CPU Units: CS1H-CPU@@-EV1

CS1D CPU Units:
CS1D CPU Units for Duplex-CPU System:
CS1D-CPU@@H
CS1D CPU Units for Single-CPU System:
CS1D-CPU@@S
CS1D Process CPU Units:
CS1D-CPU@@P

Basic I/O Units CS-series Basic I/O Units CJ-series Basic I/O Units
Special I/O Units CS-series Special I/O Units CJ-series Special I/O Units
CPU Bus Units CS-series CPU Bus Units CJ-series CPU Bus Units
Power Supply Units CS-series Power Supply Units CJ-series Power Supply Units

Please read this manual and all related manuals listed in the table on the next page and be sure you
understand information provided before attempting to install or use CS/CJ-series CPU Units in a PLC
System.

This manual contains the following sections.

Section 1 describes the basic structure and operation of the CPU Unit.

Section 2 describes basic information required to write, check, and input programs.

Section 3 outlines the instructions that can be used to write user programs.

Section 4 describes the operation of tasks.

Section 5 describes the functions used to manipulate file memory.

Section 6 provides details on advanced functions: Cycle time/high-speed processing, index registers,

serial communications, startup and maintenance, diagnostic and debugging, Programming Devices,
and CJ Basic I/O Unit input response time settings.

Section 7 describes the processes used to transfer the program to the CPU Unit and the functions that
can be used to test and debug the program.

The Appendices provide a comparison of CS/CJ-series, restrictions in using C200H Special I/O Units,
and changes made to Host Link Systems.

CS1G-CPU@@H

CS1G-CPU@@-EV1

CJ1-H CPU Units: CJ1H-CPU@@H

CJ1G-CPU@@H
CJ1G-CPU@@P

CJ1 CPU Units: CJ1G-CPU@@-EV1
CJ1M CPU Units: CJ1M-CPU@@

xix

About this Manual, Continued

Name Cat. No. Contents

SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D­CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M­CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H
Programmable Controllers Programming Manual

SYSMAC CS Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H
Programmable Controllers Operation Manual

SYSMAC CJ Series
CJ1G-CPU@@, CJ1M-CPU@@, CJ1G-CPU@@P, CJ1G/H­CPU@@H
Programmable Controllers Operation Manual

SYSMAC CJ Series
CJ1M-CPU21/22/23
Built-in I/O Functions Operation Manual

SYSMAC CS Series
CS1D-CPU@@H CPU Units
CS1D-CPU@@S CPU Units
CS1D-DPL01 Duplex Unit
CS1D-PA207R Power Supply Unit
Duplex System Operation Manual

SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D­CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M­CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H
Programmable Controllers Instructions Reference Manual

SYSMAC CS/CJ Series
CQM1H-PRO01-E, C200H-PRO27-E, CQM1-PRO01-E
Programming Consoles Operation Manual

SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D­CPU@@H, CS1D-CPU@@
CPU@@H, CJ1G-CPU@@P, C J 1 M - CP U @@, CS1W­SCB21-V1/41-V1, CS1W-SCU21-V1, CJ1W-SCU21-V1/
41-V1
Communications Commands Reference Manual

SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 3.@

SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 4.@

SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 5.@

SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Function Blocks

S, CJ1G-CPU

@@, CJ1G/H-

W394 This manual describes programming and other

methods to use the functions of the CS/CJ-series
PLCs. (This manual)

W339 Provides an outlines of and describes the design,

installation, maintenance, and other basic opera­tions for the CS-series PLCs.

W393 Provides an outlines of and describes the design,

installation, maintenance, and other basic opera­tions for the CJ-series PLCs.

W395 Describes the functions of the built-in I/O for

CJ1M CPU Units.

W405 Provides an outline of and describes the design,

installation, maintenance, and other basic opera­tions for a Duplex System based on CS1D CPU
Units.

W340 Describes the ladder diagram programming

instructions supported by CS/CJ-series PLCs.

W341 Provides information on how to program and

operate CS/CJ-series PLCs using a Programming
Console.

W342 Describes the C-series (Host Link) and FINS

communications commands used with CS/CJ­series PLCs.

W414 Provides information on how to use the CX-Pro-

grammer, a programming device that supports the

W425

W437

W438 Describes specifications and operation methods

CS/CJ-series PLCs, and the CX-Net contained
within CX-Programmer.

related to function blocks. This information is
required only when using function blocks with the
combination of CX-Programmer Ver. 5.0 and
CS1-H/CJ1-H/CJ1M CPU Unit Ver. 3.0. Refer to

CX-Programmer Operation Manual Version 5.@
(W437) for details on other operations for CX-Pro-

grammer Ver. 5.0.

xx

Name Cat. No. Contents

SYSMAC CS/CJ Series
CS1W-SCB21-V1/41-V1, CS1W-SCU21-V1, CJ1W­SCU21-V1/41-V1
Serial Communications Boards/Units Operation Manual

SYSMAC WS02-PSTC1-E
CX-Protocol Operation Manual

W336 Describes the use of Serial Communications Unit

and Boards to perform serial communications
with external devices, including the usage of stan­dard system protocols for OMRON products.

W344 Describes the use of the CX-Protocol to create

protocol macros as communications sequences
to communicate with external devices.

!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.

xxi

xxii

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 NON­INFRINGEMENT, 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.

xxiii

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.

xxiv

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.

xxv

xxvi

PRECAUTIONS

This section provides general precautions for using the CS/CJ-series Programmable Controllers (PLCs) and related devices.

The information contained in this section is important for the safe and reliable application of Programmable
Controllers. You must read this section and understand the information contained before attempting to set up or
operate a PLC system.

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxx

6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiv

6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiv

6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxiv

6-3 Conformance to EC Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxv

6-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . . xxxv

xxvii

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 specifica­tions 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, amuse­ment machines, safety equipment, and other systems, machines, and equip­ment 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 the Unit. Be
sure to read this manual before attempting to use the Unit 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 appli­cations.

3 Safety Precautions

!WARNING The CPU Unit refreshes I/O even when the program is stopped (i.e., even in

PROGRAM mode). Confirm safety thoroughly in advance before changing the
status of any part of memory allocated to I/O Units, Special I/O Units, or CPU
Bus Units. Any changes to the data allocated to any Unit may result in unex­pected operation of the loads connected to the Unit. Any of the following oper­ation may result in changes to memory status.

• Transferring I/O memory data to the CPU Unit from a Programming
Device.

• Changing present values in memory from a Programming Device.

• Force-setting/-resetting bits from a Programming Device.

• Transferring I/O memory files from a Memory Card or EM file memory to
the CPU Unit.

• Transferring I/O memory from a host computer or from another PLC on a
network.

xxviii

!WARNING Do not attempt to take any Unit apart while the power is being supplied. Doing

so may result in electric shock.

Safety Precautions 3

!WARNING Do not touch any of the terminals or terminal blocks while the power is being

supplied. Doing so may result in electric shock.

!WARNING Do not attempt to disassemble, repair, or modify any Units. Any attempt to do

so may result in malfunction, fire, or electric shock.

!WARNING Provide safety measures in external circuits (i.e., not in the Programmable

Controller), including the following items, to ensure safety in the system if an
abnormality occurs due to malfunction of the PLC or another external 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.

• 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 counter­measure for such problems, external safety measures must be provided
to ensure safety in the system.

• When the 24-V DC 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 Confirm safety before transferring data files stored in the file memory (Mem-

ory Card or EM file memory) to the I/O area (CIO) of the CPU Unit using a
peripheral tool. Otherwise, the devices connected to the output unit may mal­function regardless of the operation mode of the CPU Unit.

!Caution 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. Abnormal operation may
result in serious accidents.

!Caution The CS1-H, CJ1-H, CJ1M, and CS1D CPU Units automatically back up the

user program and parameter data to flash memory when these are written to
the CPU Unit. I/O memory (including the DM, EM, and HR Areas), however, is
not written to flash memory. The DM, EM, and HR Areas can be held during
power interruptions with a battery. If there is a battery error, the contents of
these areas may not be accurate after a power interruption. If the contents of
the DM, EM, and HR Areas are used to control external outputs, prevent inap­propriate outputs from being made whenever the Battery Error Flag (A40204)
is ON.

!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.

!Caution Confirm safety at the destination node before transferring a program to

another node or changing contents of the I/O memory area. Doing either of
these without confirming safety may result in injury.

xxix

Operating Environment Precautions 4

!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 Do not touch the Power Supply Unit when power is being supplied or immedi-

ately after the power supply is turned OFF. The Power Supply Unit will be hot
and you may be burned.

!Caution Be careful when connecting personal computers or other peripheral devices

to a PLC to which is mounted a non-insulated Unit (CS1W-CLK12/52(-V1) or
CS1W-ETN01) connected to an external power supply. A short-circuit will be
created if the 24 V side of the external power supply is grounded and the 0 V
side of the peripheral device is grounded. When connecting a peripheral
device to this type of PLC, either ground the 0 V side of the external power
supply or do not ground the external power supply at all.

4 Operating Environment Precautions

!Caution Do not operate the control system in the following locations:

• 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 tem­perature.

• 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 condi­tions at installation and remains within the specified conditions during the life
of the system.

5 Application Precautions

Observe the following precautions when using the PLC System.

• You must use the CX-Programmer (programming software that runs on
Windows) if you need to program more than one task. A Programming
Console can be used to program only one cyclic task plus interrupt tasks.

xxx