Omron CJ - PROGRAMMING 12-2009 Owner's manual

Cat. No. W394-E1-14
Programmable Controllers
SYSMAC CS Series
CS1G/H-CPU_-EV1, CS1G/H-CPU_H,
CS1D-CPU_H, CS1D-CPU_S
SYSMAC CJ Series
CJ1H-CPU_H-R, CJ1G-CPU_, CJ1G/H-CPU_H,
CJ1G-CPU_P, CJ1M-CPU_
SYSMAC One NSJ Series
PROGRAMMING MANUAL

SYSMAC CS Series
CS1G/H-CPU@@-EV1
CS1G/H-CPU@@H
CS1D-CPU@@H
CS1D-CPU@@S
SYSMAC CJ Series
CJ1H-CPU@@H-R
CJ1G-CPU@@
CJ1G/H-CPU@@H
CJ1G-CPU@@P
CJ1M-CPU@@
SYSMAC One NSJ Series
Programmable Controllers
Programming Manual
Revised December 2009

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. 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, 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, 2001
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 manufactured on or before Novem-
ber 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 CJ1-H-R CPU Units begins at version 4.0.
• 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
CS Series
CJ Series
NSJ Series
Units Models Unit version
CS1-H CPU Units CS1@-CPU@@H Unit version 4.1
Unit version 4.0
Unit version 3.0
Unit version 2.0
Pre-Ver. 2.0
CS1D CPU Units Duplex-CPU Systems
CS1D-CPU@@H
Unit version 1.2
Unit version 1.1
Pre-Ver. 1.1
Single-CPU Systems
CS1D-CPU@@S
Unit version 2.0
CS1 CPU Units CS1@-CPU@@ No unit version.
CS1 Version-1 CPU Units CS1@-CPU@@-V1 No unit version.
Units Models Unit version
CJ1-H CPU Units CJ1H-CPU@@H-R Unit version 4.2
Unit version 4.1
Unit version 4.0
CJ1@-CPU@@H
CJ1@-CPU@@P
Unit version 4.0
Unit version 3.0
Unit version 2.0
Pre-Ver. 2.0
CJ1M CPU Units CJ1M-CPU12/13
CJ1M-CPU22/23
Unit version 4.0
Unit version 3.0
Unit version 2.0
Pre-Ver. 2.0
CJ1M-CPU11/21 Unit version 4.0
Unit version 3.0
Unit version 2.0
Units Unit version
NSJ@-TQ@@(B)-G5D
NSJ@-TQ@@(B)-M3D
Unit version 3.0

xi
Function Support by Unit Version
• Functions Supported for Unit Version 4.0 or Later
CX-Programmer 7.0 or higher must be used to enable using the functions
added for unit version 4.0.
Additional functions are supported if CX-Programmer version 7.2 or higher is
used.
CS1-H CPU Units
CS1D CPU Units Unit version 4.0 is not supported.
CJ1-H/CJ1M CPU Units
User programs that contain functions supported only by CPU Units with unit
version 4.0 or later cannot be used on CS/CJ-series CPU Units with unit ver-
sion 3.0 or earlier. An error message will be displayed if an attempt is made to
download programs containing unit version 4.0 functions to a CPU Unit with a
unit version of 3.0 or earlier, and the download will not be possible.
If an object program file (.OBJ) using these functions is transferred to a CPU
Unit with a unit version of 3.0 or earlier, a program error will occur when oper-
ation is started or when the unit version 4.0 function is executed, and CPU
Unit operation will stop.
Function CS1@-CPU@@H
Unit version 4.0 or later Other unit versions
Online editing of function blocks
Note This function cannot be used for simulations on the CX-Simulator.
OK ---
Input-output variables in function blocks OK ---
Text strings in function blocks OK ---
New application
instructions
Number-Text String Conversion Instructions:
NUM4, NUM8, NUM16, STR4, STR8, and STR16
OK ---
TEXT FILE WRITE (TWRIT) OK ---
ST programming in task programs OK with CX-Program-
mer version 7.2 or higher
---
SFC programming in task programs OK with CX-Program-
mer version 7.2 or higher
---
Function CJ1H-CPU@@H-R, CJ1@-CPU@@H,
CJ1G-CPU@@P, C J 1 M - C P U @@
Unit version 4.0 or later Other unit versions
Online editing of function blocks
Note This function cannot be used for simulations on the CX-Simulator.
OK ---
Input-output variables in function blocks OK ---
Text strings in function blocks OK ---
New application
instructions
Number-Text String Conversion Instructions:
NUM4, NUM8, NUM16, STR4, STR8, and STR16
OK ---
TEXT FILE WRITE (TWRIT) OK ---
ST programming in task programs OK with CX-Program-
mer version 7.2 or higher
---
SFC programming in task programs OK with CX-Program-
mer version 7.2 or higher
---

xii
•Functions Supported for Unit Version 3.0 or Later
CX-Programmer 5.0 or higher must be used to enable using the functions
added for unit version 3.0.
CS1-H CPU Units
CS1D CPU Units Unit version 3.0 is not supported.
CJ1-H/CJ1M CPU Units
User programs that contain functions supported only by CPU Units with unit
version 3.0 or later cannot be used on CS/CJ-series CPU Units with unit ver-
sion 2.0 or earlier. An error message will be displayed if an attempt is made to
download programs containing unit version 3.0 functions to a CPU Unit with a
unit version of 2.0 or earlier, and the download will not be possible.
If an object program file (.OBJ) using these functions is transferred to a CPU
Unit with a unit version of 2.0 or earlier, a program error will occur when oper-
ation is started or when the unit version 3.0 function is executed, and CPU
Unit operation will stop.
Function CS1@-CPU@@H
Unit version 3.0 or
later
Other unit versions
Function blocks OK ---
Serial Gateway (converting FINS commands to CompoWay/F
commands at the built-in serial port)
OK ---
Comment memory (in internal flash memory) OK ---
Expanded simple backup data OK ---
New application
instructions
TXDU(256), RXDU(255) (support no-protocol com-
munications 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
TXD(235) and RXD(236) instructions (support no-
protocol communications with Serial Communica-
tions Boards with unit version 1.2 or later)
OK ---
Function CJ1H-CPU@@H-R, CJ1@-CPU@@H,
CJ1G-CPU@@P, C J 1 M - C P U @@
Unit version 3.0 or
later
Other unit versions
Function blocks OK ---
Serial Gateway (converting FINS commands to CompoWay/F
commands at the built-in serial port)
OK ---
Comment memory (in internal flash memory) OK ---
Expanded simple backup data OK ---
New application
instructions
TXDU(256), RXDU(255) (support no-protocol com-
munications 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 calculating pulse
frequency. (CJ1M CPU Units only)
OK ---

xiii
•Functions Supported for Unit Version 2.0 or Later
CX-Programmer 4.0 or higher must be used to enable using the functions
added for unit version 2.0.
CS1-H CPU Units
Function CS1-H CPU Units
(CS1@-CPU@@H)
Unit version 2.0 or later Other unit versions
Downloading and Uploading Individual Tasks OK ---
Improved Read Protection Using Passwords OK ---
Write Protection from FINS Commands Sent to CPU
Units via Networks
OK ---
Online Network Connections without I/O Tables OK ---
Communications through a Maximum of 8 Network Lev-
els
OK ---
Connecting Online to PLCs via NS-series PTs OK OK from lot number 030201
Setting First Slot Words OK for up to 64 groups OK for up to 8 groups
Automatic Transfers at Power ON without a Parameter
File
OK ---
Automatic Detection of I/O Allocation Method for Auto-
matic Transfer at Power ON
--- ---
Operation Start/End Times OK ---
New Application
Instructions
MILH, MILR, MILC OK ---
=DT, <>DT, <DT, <=DT, >DT, >=DT OK ---
BCMP2 OK ---
GRY OK OK from lot number 030201
TPO OK ---
DSW, TKY, HKY, MTR, 7SEG OK ---
EXPLT, EGATR, ESATR, ECHRD,
ECHWR
OK ---
Reading/Writing CPU Bus Units
with IORD/IOWR
OK OK from lot number 030418
PRV2 --- ---

xiv
CS1D CPU Units
Function CS1D CPU Units for
Single-CPU Systems
(CS1D-CPU@@S)
CS1D CPU Units for Duplex-CPU
Systems (CS1D-CPU@@H)
Unit version 2.0 Unit version 1.1 or
later
Pre-Ver. 1.1
Functions
unique to CS1D
CPU Units
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
Unit removal without a
Programming Device
--- OK (Unit version 1.2 or
later)
---
Downloading and Uploading Individual Tasks OK --- ---
Improved Read Protection Using Passwords OK --- ---
Write Protection from FINS Commands Sent
to CPU Units via Networks
OK --- ---
Online Network Connections without I/O
Ta b le s
OK --- ---
Communications through a Maximum of 8
Network Levels
OK --- ---
Connecting Online to PLCs via NS-series
PTs
OK --- ---
Setting First Slot Words 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 OK ---
New Applica-
tion Instructions
MILH, MILR, MILC OK --- ---
=DT, <>DT, <DT, <=DT,
>DT, >=DT
OK --- ---
BCMP2 OK --- ---
GRY OK --- ---
TPO OK --- ---
D S W, T K Y, H K Y, M T R ,
7SEG
OK --- ---
EXPLT, EGATR, ESATR,
ECHRD, ECHWR
OK --- ---
Reading/Writing CPU Bus
Units with IORD/IOWR
OK --- ---
PRV2 OK --- ---

xv
CJ1-H/CJ1M CPU Units
User programs that contain functions supported only by CPU Units with unit
version 2.0 or later cannot be used on CS/CJ-series Pre-Ver. 2.0 CPU Units.
An error message will be displayed if an attempt is made to download pro-
grams containing unit version s.0 functions to a Pre-Ver. 2.0 CPU Unit, and
the download will not be possible.
If an object program file (.OBJ) using these functions is transferred to a Pre-
Ver. 2.0 CPU Unit, a program error will occur when operation is started or
when the unit version 2.0 function is executed, and CPU Unit operation will
stop.
Function CJ1-H CPU Units
(CJ1@-CPU@@H) CJ1M CPU Units
(CJ1H-CPU@@H-R)
(CJ1@-CPU@@H)
(CJ1G-CPU@@P)
CJ1M-CPU12/13/22/23 CJ1M-
CPU11/21
Unit version
2.0 or later
Other unit
versions
Unit version
2.0 or later
Other unit
versions
Other unit
versions
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
Ta b le s
OK ---
(Supported if
I/O tables are
automatically
generated at
startup.)
OK ---
(Supported if
I/O tables are
automatically
generated at
startup.)
OK
Communications through a Maximum of 8
Network Levels
OK --- OK --- OK
Connecting Online to PLCs via NS-series
PTs
OK OK from lot
number
030201
OK OK from lot
number
030201
OK
Setting First Slot Words OK for up to
64 groups
OK for up to
8 groups
OK for up to
64 groups
OK for up to
8 groups
OK for up to
64 groups
Automatic Transfers at Power ON without a
Parameter File
OK --- OK --- OK
Automatic Detection of I/O Allocation Method
for Automatic Transfer at Power ON
--- --- --- --- ---
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 OK from lot
number
030201
OK OK from lot
number
030201
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 CPU Units
with built-in
I/O
--- OK, but only
for CPU Units
with built-in
I/O

xvi
Unit Versions and Programming Devices
The following tables show the relationship between unit versions and CX-Pro-
grammer versions.
Unit Versions and Programming Devices
Note 1. As shown above, there is no need to upgrade to CX-Programmer version
as long as the functions added for unit versions are not used.
2. CX-Programmer version 7.1 or higher is required to use the new functions
added for unit version 4.0 of the CJ1-H-R CPU Units. CX-Programmer ver-
sion 7.22 or higher is required to use unit version 4.1 of the CJ1-H-R CPU
Units. CX-Programmer version 7.0 or higher is required to use unit version
4.2 of the CJ1-H-R CPU Units. You can check the CX-Programmer version
using the About menu command to display version information.
3. CX-Programmer version 7.0 or higher is required to use the functional im-
provements made for unit version 4.0 of the CS/CJ-series CPU Units. With
CX-Programmer version 7.2 or higher, you can use even more expanded
functionality.
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.
Note When using a CJ1H-CPU@@H-R CPU Unit, set the CPU Unit model to
CPU67-R, CPU66-R, CPU65-R, or CPU64-R.
CPU Unit Functions (See note 1.) CX-Programmer Program-
ming
Console
Ver. 3.3
or lower
Ver. 4.0 Ver. 5.0
Ver. 6.0
Ver. 7.0
or higher
CS/CJ-series unit
Ver. 4.0
Functions added
for unit version 4.0
Using new functions --- --- --- OK (See
notes 2
and 3.)
No
restric-
tions
Not using new functions OK OK OK OK
CS/CJ-series unit
Ver. 3.0
Functions added
for unit version 3.0
Using new functions --- --- OK OK
Not using new functions OK OK OK OK
CS/CJ-series unit
Ver. 2.0
Functions added
for unit version 2.0
Using new functions --- OK OK OK
Not using new functions OK OK OK OK
CS1D CPU Units
for Single-CPU Sys-
tems, unit Ver. 2.0
Functions added
for unit version 2.0
Using new functions --- OK OK OK
Not using new functions
CS1D CPU Units
for Duplex-CPU
Systems, unit Ver.1.
Functions added
for unit version 1.1
Using function blocks --- OK OK 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@@H CS1D-H (or CS1H-H)
CS1D CPU Units for Single-CPU Systems CS1D-CPU@@S CS1D-S
CJ Series CJ1-H CPU Units CJ1G-CPU@@H
CJ1G-CPU@@P
CJ1G-H
CJ1H-CPU@@H-R
(See note.)
CJ1H-CPU@@H
CJ1H-H
CJ1M CPU Units CJ1M-CPU@@ CJ1M

xvii
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 to down-
load a program containing
instructions supported only by
later unit versions or a CPU Unit
to a previous unit version.
Check the program or change
to a CPU Unit with a later unit
version.
An attempt was to download a
PLC Setup containing settings
supported only by later unit ver-
sions or a CPU Unit to a previous
unit version.
Check the settings in the PLC
Setup or change to a CPU Unit
with a later unit version.
“????” is displayed in a program transferred from the
PLC to the CX-Programmer.
An attempt was made to upload a
program containing instructions
supported only by higher versions
of CX-Programmer to a lower
version.
New instructions cannot be
uploaded to lower versions of
CX-Programmer. Use a higher
version of CX-Programmer.

xviii

xix
TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxii
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1-6 Description of Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SECTION 2
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2-1 Basic Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2-2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2-3 Checking Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
SECTION 3
Instruction Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
3-1 Sequence Input Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
3-2 Sequence Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
3-3 Sequence Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
3-4 Timer and Counter Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
3-5 Comparison Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
3-6 Data Movement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3-7 Data Shift Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
3-8 Increment/Decrement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
3-9 Symbol Math Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
3-10 Conversion Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
3-11 Logic Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
3-12 Special Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
3-13 Floating-point Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
3-14 Double-precision Floating-point Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
3-15 Table Data Processing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
3-16 Data Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
3-17 Subroutine Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
3-18 Interrupt Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
3-19 High-speed Counter and Pulse Output Instructions (CJ1M-CPU21/22/23 Only) . . . . . . . . 136
3-20 Step Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
3-21 Basic I/O Unit Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
3-22 Serial Communications Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
3-23 Network Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
3-24 File Memory Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
3-25 Display Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
3-26 Clock Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

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TABLE OF CONTENTS
3-27 Debugging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
3-28 Failure Diagnosis Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
3-29 Other Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
3-30 Block Programming Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
3-31 Text String Processing Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
3-32 Task Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
3-33 Model Conversion Instructions (CPU Unit Ver. 3.0 or Later Only) . . . . . . . . . . . . . . . . . . . 161
3-34 Special Function Block Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
SECTION 4
Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
4-1 Task Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
4-2 Using Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
4-3 Interrupt Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
4-4 Programming Device Operations for Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
SECTION 5
File Memory Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
5-1 File Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
5-2 Manipulating Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
5-3 Using File Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
SECTION 6
Advanced Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
6-1 Cycle Time/High-speed Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
6-2 Index Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
6-3 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
6-4 Changing the Timer/Counter PV Refresh Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
6-5 Using a Scheduled Interrupt as a High-precision Timer (CJ1-H-R and CJ1M Only) . . . . . 321
6-6 Startup Settings and Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
6-7 Diagnostic Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
6-8 CPU Processing Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .343
6-9 Peripheral Servicing Priority Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
6-10 Battery-free Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
6-11 Other Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
SECTION 7
Program Transfer, Trial Operation, and Debugging . . . . . 359
7-1 Program Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
7-2 Trial Operation and Debugging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Appendices
A PLC Comparison Charts: CJ-series, CS-series, C200HG/HE/HX, CQM1H, CVM1,
and CV-series PLCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .369
B Changes from Previous Host Link Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405