Omron CJ1M-CPU21 User manual

Cat. No. W395-E1-03
CJ-series Built-in I/O
CJ1M-CPU21/22/23
CJ1M CPU Units

CJ-series Built-in I/O
CJ1M-CPU21/22/23 CPU Units
Operation Manual
Revised August 2004

iv

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 pre-
cautions can result in injury to people or damage to property.
!DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
!WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
!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, how-
ever, in some Programming Device displays to mean Programmable Control-
ler.
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, 2002
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
r
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
f
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.

vi
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
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.
• CS1-H, CJ1-H, and CJ1M CPU Units (except for low-end models) manu-
factured 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.
CS1H-CPU67H
CPU UNIT
Lot No. 040715 0000 Ver.3.0
OMRON Corporation MADE IN JAPAN
CS/CJ-series CPU Unit Product nameplate
Lot No. Unit version
Example for Unit version 3.0

vii
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 informa-
tion - CPU Unit.
The following Unit Manufacturing information Dialog Box will be displayed.
Unit version

viii
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 differenti-
ate between CPU Units of different unit versions.
Unit version

ix
Unit Version Notation In this manual, the unit version of a CPU Unit is given as shown in the follow-
ing table.
Product nameplate
Meaning
CPU Units on which no unit version is
given
Units on which a version is given
(Ver. @.@)
Designating individual
CPU Units (e.g., the
CS1H-CPU67H)
Pre-Ver. 2.0 CS1-H CPU Units CS1H-CPU67H CPU Unit Ver. @.@
Designating groups of
CPU Units (e.g., the
CS1-H CPU Units)
Pre-Ver. 2.0 CS1-H CPU Units CS1-H CPU Units Ver. @.@
Designating an entire
series of CPU Units
(e.g., the CS-series CPU
Units)
Pre-Ver. 2.0 CS-series CPU Units CS-series CPU Units Ver. @.@
Lot No. XXXXXX XXXX
OMRON Corporation MADE IN JAPAN
Lot No. XXXXXX XXXX
Ver. @
@
.@

x
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
CS1-V1 CPU
Units
CS1@-
CPU@@-V1 No unit version
CS1-H CPU Units CS1@-
CPU@@H
Pre-Ver. 2.0 CPU Units CPU Units Ver. 2.0
(Lot No.: 031105 on)
CPU Units Ver.
3.0 (Lot No.:
040622 on)
CS1D
CPU
Units
CPU
Units for
Duplex-
CPU
System
CS1D-
CPU@@H
Pre-Ver. 1.1 CPU Units CPU Units Ver.1.1
(Lot No.: 031120 on)
CPU
Units for
Single-
CPU
System
CS1D-
CPU@@SCPU Units Ver. 2.0
(Lot No.: 031215 on)
CJ
Series
CJ1 CPU Units CJ1G-
CPU@@ Pre-Ver. 2.0 CPU Units
CJ1-H CPU Units CJ1@-
CPU@@H
Pre-Ver. 2.0 CPU Units
CPU Units Ver. 2.0
(Lot No.: 031105 on)
CPU Units Ver.
3.0 (Lot No.:
040623 on)
CJ1M CPU Units
except low-end
models
CJ1M-
CPU@@
Pre-Ver. 2.0 CPU Units CPU Units Ver. 2.0
(Lot No.: 031105 on)
CPU Units Ver.
3.0 (Lot No.:
040624 on)
CJ1M CPU Units,
low-end models
CJ1M-
CPU11/21
Unit Ver. 2.0
(Lot No.: 031002 on)
CPU Units Ver.
3.0 (Lot No.:
040629 on)
Sup-
port
Soft-
ware
CX-Programmer WS02-
CXPC1-
EV@Ver.3.2 Ver.3.3 Ver.4.0 Ver.5.0

xi
Function Support by Unit Version
CJ1-H/CJ1M CPU Units
Function CJ1-H CPU Units
(CJ1@-CPU@@H)
CJ1M CPU Units,
except low-end models
(CJ1M-CPU@@)
CJ1M CPU
Units, low-end
models
(CJ1M-
CPU11/21)
Pre-Ver. 2.0
CPU Units
CPU Units Ver.
2.0
Pre-Ver. 2.0
CPU Units
CPU Units Ver.
2.0
CPU Units Ver.
2.0
Downloading and Uploading
Individual Tasks
--- OK --- OK OK
Improved Read Protection
Using Passwords
--- OK --- OK OK
Write Protection from FINS
Commands Sent to CPU Units
via Networks
--- OK --- OK OK
Online Network Connections
without I/O Tables
OK, but only if
I/O table alloca-
tion at power
ON is set
OK OK, but only if
I/O table alloca-
tion at power
ON is set
OK OK
Communications through a
Maximum of 8 Network Levels
OK for up to 8
groups
OK for up to 64
groups
OK for up to 8
groups
OK for up to 64
groups
OK for up to 64
groups
Connecting Online to PLCs via
NS-series PTs
OK from lot
number 030201
OK OK from lot
number 030201
OK OK
Setting First Slot Words --- OK --- OK OK
Automatic Transfers at Power
ON without a Parameter File
--- OK --- OK OK
Automatic Detection of I/O Allo-
cation Method for Automatic
Transfer at Power ON
--- OK --- OK OK
Operation Start/End Times --- OK --- OK OK
New
Applica-
tion
Instruc-
tions
MILH, MILR, MILC --- OK --- OK OK
=DT, <>DT, <DT,
<=DT, >DT, >=DT
--- OK --- OK OK
BCMP2 --- OK OK OK OK
GRY OK from lot
number 030201
OK OK from lot
number 030201
OK OK
TPO --- OK --- OK OK
DSW, TKY, HKY,
MTR, 7SEG
--- OK --- OK OK
EXPLT, EGATR,
ESATR, ECHRD,
ECHWR
--- OK --- OK OK
Reading/Writing
CPU Bus Units with
IORD/IOWR
--- OK --- OK OK
PRV2 --- --- --- OK, but only for
models with
built-in I/O
OK, but only for
models with
built-in I/O

xii
Functions Supported by Unit Version 3.0 or Later
CJ1-H/CJ1M CPU Units (CJ1@-CPU@@H, CJ1G-CPU@@P, C J 1 M- C PU @@)
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)
--- OK
Comment memory (in internal flash memory) --- OK
Expanded simple backup data --- OK
New Applica-
tion Instructions
TXDU(256), RXDU(255) (support no-protocol
communications with Serial Communications
Units with unit version 1.2 or later)
--- OK
Model conversion instructions: XFERC(565),
DISTC(566), COLLC(567), MOVBC(568),
BCNTC(621)
--- OK
Special function block instructions: GETID(286) --- OK
Additional
instruction func-
tions
PRV(881) and PRV2(883) instructions: Added
high-frequency calculation methods for calculat-
ing pulse frequency. (CJ1M CPU Units only)
--- OK

xiii
Unit Versions and Programming Devices
CX-Programmer version 4.0 or higher must be used to enable using the func-
tions 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-Pro-
grammer versions.
Unit Versions and Programming Devices
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.
CPU Unit Functions CX-Programmer Program-
ming Con-
sole
Ver. 3.2
or lower
Ver. 3.3 Ver. 4.0 Ver. 5.0
or higher
CJ1M CPU Units,
low-end models,
unit Ver. 2.0
Functions added
for unit version
2.0
Using new functions --- --- OK OK No
restrictions
Not using new functions --- OK OK OK
CS1-H, CJ1-H,
and CJ1M CPU
Units except low-
end models, unit
Ver. 2.0
Functions added
for unit version
2.0
Using new functions --- --- OK OK
Not using new functions OK OK OK OK
CS1D CPU Units
for Single-CPU
Systems, unit Ver.
2.0
Functions added
for unit version
2.0
Using new functions --- --- OK OK
Not using new functions OK
CS1D CPU Units
for Duplex-CPU
Systems, unit
Ver.1.
Functions added
for unit version
1.1
Using new functions --- --- OK OK
Not using new functions OK OK OK OK
CS/CJ-series unit
Ver. 3.0
Function block
functions added
for unit version
3.0
Using function blocks --- --- --- OK
Not using function blocks OK OK OK OK
Series CPU Unit group CPU Unit model Device type setting on
CX-Programmer Ver. 4.0 or higher
CS Series CS1-H CPU Units CS1G-CPU@@H CS1G-H
CS1H-CPU@@H CS1H-H
CS1D CPU Units for Duplex-CPU Systems CS1D-CPU@@HCS1D-H (or CS1H-H)
CS1D CPU Units for Single-CPU Systems CS1D-CPU@@SCS1D-S
CJ Series CJ1-H CPU Units CJ1G-CPU@@H CJ1G-H
CJ1H-CPU@@H CJ1H-H
CJ1M CPU Units CJ1M-CPU@@ CJ1M

xiv
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.
An attempt was made using CX-
Programmer version 4.0 or higher
to download a program contain-
ing instructions supported only by
CPU Units Ver. 2.0 or later to a
Pre-Ver. 2.0 CPU Units.
Check the program or change
the CPU Unit being down-
loaded to a CPU Unit Ver. 2.0
or later.
An attempt was made using CX-
Programmer version 4.0 or higher
to download a PLC Setup con-
taining 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.
Check the settings in the PLC
Setup or change the CPU Unit
being downloaded to a CPU
Unit Ver. 2.0 or later.
“????” is displayed in a program transferred from the
PLC to the CX-Programmer.
CX-Programmer version 3.3 or
lower was used to upload a pro-
gram containing instructions sup-
ported only by CPU Units Ver. 2.0
or later from a CPU Unit Ver. 2.0
or later.
The new instructions cannot
be uploaded using CX-Pro-
grammer version 3.3 or lower.
Use CX-Programmer version
4.0 or higher.

xv
TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
2 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxv
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
SECTION 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Version Upgrades for CJ1M CPU Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1-3 Functions Listed by Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
SECTION 2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2-1 Allocations for Built-in CPU Unit Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-2 Allocations for Built-in CPU Unit Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2-3 Allocations for Origin Search Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SECTION 3
I/O Specifications and Wiring . . . . . . . . . . . . . . . . . . . . . . . . 19
3-1 I/O Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3-2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3-3 Wiring Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SECTION 4
Data Area Allocation and PLC Setup Settings . . . . . . . . . . 51
4-1 Data Area Allocation for Built-in I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4-2 PLC Setup Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4-3 Auxiliary Area Data Allocation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
4-4 Flag Operations during Pulse Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
SECTION 5
High-speed Counter/Pulse Output Instructions. . . . . . . . . . 77
5-1 MODE CONTROL: INI(880) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
5-2 HIGH-SPEED COUNTER PV READ: PRV(881) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
5-3 COUNTER FREQUENCY CONVERT: PRV2(883) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
5-4 REGISTER COMPARISON TABLE: CTBL(882). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
5-5 SPEED OUTPUT: SPED(885) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
5-6 SET PULSES: PULS(886) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

xvi
TABLE OF CONTENTS
5-7 PULSE OUTPUT: PLS2(887). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
5-8 ACCELERATION CONTROL: ACC(888). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
5-9 ORIGIN SEARCH: ORG(889) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
5-10 PULSE WITH VARIABLE DUTY FACTOR: PWM(891) . . . . . . . . . . . . . . . . . . . . . . . . . 120
SECTION 6
Built-in I/O Function Descriptions . . . . . . . . . . . . . . . . . . . . 123
6-1 Built-in Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
6-2 Built-in Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
6-3 Origin Search and Origin Return Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
SECTION 7
Programming Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
7-1 Built-in Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Appendices
A Combinations of Pulse Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
B Using Pulse Instructions in other CPU Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
C Interrupt Response Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

xvii
About this Manual:
This manual describes the installation and operation of the 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.
Please read this manual and all related manuals listed in the following table and be sure you under-
stand information provided before attempting to install or use CJ-series CPU Units in a PLC System.
Unit CS Series CJ Series
CPU Units CS1-H CPU Units: CS1H-CPU@@H
CS1G-CPU@@H
CJ1-H CPU Units: CJ1H-CPU@@H
CJ1G-CPU@@H
CJ1G-CPU@@P
CS1 CPU Units: CS1H-CPU@@-EV1
CS1G-CPU@@-EV1
CJ1 CPU Units: CJ1G-CPU@@-EV1
CJ1M CPU Units: CJ1M-CPU@@
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
Name Cat. No. Contents
SYSMAC CJ Series
CJ1M-CPU21/22/23
Built-in I/O Operation Manual
W395 Describes the functions of the built-in I/O for
CJ1M CPU Units. (This manual)
SYSMAC CJ Series
CJ1G-CPU@@, CJ1M-CPU@@, CJ1G-CPU@@P, CJ1G/H-
CPU@@H
Programmable Controllers Operation Manual
W393 Provides an outlines of and describes the design,
installation, maintenance, and other basic opera-
tions for the CJ-series PLCs.
SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D-
CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M-
CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H
Programmable Controllers Programming Manual
W394 This manual describes programming and other
methods to use the functions of the CS/CJ-series
PLCs.
SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D-
CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M-
CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H
Programmable Controllers Programming Manual
W340 Describes the ladder diagram programming
instructions supported by CS/CJ-series PLCs.
SYSMAC CS/CJ Series
CQM1H-PRO01-E, C200H-PRO27-E, CQM1-PRO01-E
Programming Consoles Operation Manual
W341 Provides information on how to program and
operate CS/CJ-series PLCs using a Programming
Console.

xviii
About this Manual, Continued
This manual describes the installation and operation of the built-in I/O supported by the CJ1M-CPU21,
CJ1M-CPU22, and CJ1M-CPU23 CPU Units and includes the sections described below.
Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate the built-in I/O Be sure to read the precautions provided in the following
section.
Precautions provides general precautions for using the built-in I/O.
Section 1 describes the features and applications of the functions of the built-in I/O.
Section 2 provides an overview of the functions of built-in I/O.
Section 3 provides I/O specifications and wiring instructions for the built-in I/O.
Section 4 describes the allocation of words and bits for usage with the built-in I/O and PLC Setup set-
tings related to built-in I/O.
Section 5 describes the application of built-in I/O in detail.
Name Cat. No. Contents
SYSMAC CS/CJ Series
CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D-
CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M-
CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H, CS1W-
SCB21-V1/41-V1, CS1W-SCU21-V1, CJ1W-SCU21-V1/
41-V1
Communications Commands Reference Manual
W342 Describes the C-series (Host Link) and FINS
communications commands used with CS/CJ-
series PLCs.
SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 3.@
W414 Provide information on how to use the CX-Pro-
grammer, a programming device that supports the
CS/CJ-series PLCs, and the CX-Net contained
within CX-Programmer.
SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 4.@
W425
SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Version 5.@
W437
SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Function Blocks
W438 Describes specifications and operation methods
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.
SYSMAC WS02-CXP@@-E
CX-Programmer Operation Manual Function Blocks
W438 Describes specifications and operation methods
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.
SYSMAC CS/CJ Series
CS1W-SCB21-V1/41-V1, CS1W-SCU21-V1, CJ1W-
SCU21-V1/41-V1
Serial Communications Boards/Units Operation Manual
W336 Describes the use of Serial Communications Unit
and Boards to perform serial communications
with external devices, including the usage of stan-
dard system protocols for OMRON products.
SYSMAC WS02-PSTC1-E
CX-Protocol Operation Manual
W344 Describes the use of the CX-Protocol to create
protocol macros as communications sequences
to communicate with external devices.

xix
Section 6 provides examples of programming built-in I/O
The Appendices provides a table shown which pulse control instructions can be used together, a table
of pulse control instruction support in other PLCs, and instruction execution times.
!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.

xx

xxi
PRECAUTIONS
This section provides general precautions for using the 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-3 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
6-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . . xxix