Omron CJ series, CS series, ONE NSJ series, CP series PROGRAMMING MANUAL

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Cat. No. W342-E1-14

SYSMAC CS/CJ/CP Series SYSMAC One NSJ Series

Communications Commands

REFERENCE MANUAL

SYSMAC CS/CJ/CP Series

CS1G/H-CPU@@H CS1G/H-CPU@@-EV1 CS1D-CPU@@H CS1D-CPU@@S CS1W-SCB@@-V1 CS1W-SCU@@-V1 CJ2H-CPU6@-EIP CJ2H-CPU6@

CJ1H-CPU@@H-R

CJ1G/H-CPU@@H CJ1G-CPU@@P CJ1G-CPU@@ CJ1M-CPU@@ CJ1W-SCU@@-V1 CP1H-X@@@@-@ CP1H-XA@@@@-@ CP1H-Y@@@@-@ CP1L-M/L@@@-@

CP1E-E@@D@-@ CP1E-N@@D@-@

SYSMAC One NSJ Series

NSJ@-@@@@(B)-G5D NSJ@-@@@@(B)-M3D

Communications Commands

Reference Manual

Revised July 2009

Notice:

OMRON products are manufactured for use according to proper procedures by a qualified operator and only for the purposes described in this manual.

The following conventions are used to indicate and classify precautions in this manual. Always heed the information provided with them. Failure to heed precautions can result in injury to people or 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, however, in some Programming Device displays to mean Programmable Controller.

Visual Aids

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

CJ Series

CJ2 CPU Units

CJ2H-CPU6@-EIP CJ2H-CPU6@

CJ1-H CPU Units

CJ1H-CPU@@H-R

CJ1H-CPU@@H

CJ1G-CPU@@H

CJ1G-CPU@@P

(Loop CPU Units)

CJ1M CPU Units

CJ1M-CPU@@

CJ1 CPU Units

CJ1G-CPU@@

NSJ Series

NSJ Controllers

NSJ5-TQ@@(B)-G5D

NSJ5-SQ@@(B)-G5D

NSJ8-TV@@(B)-G5D

NSJ10-TV@@(B)-G5D

NSJ12-TS@@(B)-G5D

NSJ Controllers

NSJ5-TQ@@(B)-M3D

NSJ5-SQ@@(B)-M3D

NSJ8-TV@@(B)-M3D

CS Series

CS1-H CPU Units

CS1H-CPU@@H

CS1G-CPU@@H

CS1D CPU Units

CS1D CPU Units for Duplex Systems

CS1D-CPU@@H

CS1D CPU Units for Simplex Systems

CS1D-CPU@@S

CS1D Process-control CPU Units

CS1D-CPU@@P

CS1 CPU Units

CS1H-CPU@@(-V)

CS1G-CPU@@ (-V)

CP Series

CP1E CPU Units

CP1E-E@@D@-@*2 CP1E-N@@D@-@*3

CP1L CPU Units

CP1L-L @@D@-@ CP1L-M@@D@-@

CP1H CPU Units

CP1H-X@@D@-@ CP1H-XA@@D@-@ CP1H-Y@@DT-D

CP-series Expansion I/O Units

CP-series Expansion Units

CJ-series Basic I/O Units

CJ-series Special I/O Units

CJ-series CPU Bus Units

CJ-series Power Supply Units

NSJ-series Expansion Units

CS-series Basic I/O Units

CS-series Special I/O Units

CS-series CPU Bus Units

CS-series Power Supply Units

Note: A special Power Supply Unit

must be used for CS1D CPU Units.

CJ-series Special I/O Units*1

CJ-series CPU Bus Units*1

*1 Can only be used with the CP1H CPU unit. *2 Indicated as "E-type" in some parts of this manual. *3 Indicated as "N-type" in some parts of this manual.

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xix

SECTION 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1-1 Overview of Communications Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 C-mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1-3 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SECTION 2

Overview of C-mode Commands . . . . . . . . . . . . . . . . . . . . . 7

2-1 C-mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2-2 Command/Response Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2-3 Application Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2-4 Precautions when Reusing Programs from Earlier Models . . . . . . . . . . . . . . . . . . . . . . . . . 15

SECTION 3

Overview of FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . 27

3-1 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3-2 Using FINS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3-3 FINS Command and Response Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3-4 Settings for Sending FINS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-5 FINS Commands with Host Link Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3-6 Serial Gateway Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3-7 Communications Frames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

SECTION 4

C-mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4-1 C-mode Command List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

4-2 End Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

4-3 C-mode Command Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

SECTION 5

FINS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

5-1 Command Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

5-2 Designating Command Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

5-3 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

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About this Manual:

This manual describes the C-series (Host Link) and FINS communications commands used with CS/ CJ-series and CP-series Programmable Controllers (PLCs) and NSJ Controllers, and includes the sections described below.

Please read this manual and all related manuals listed in the following table and be sure you understand information provided before attempting to design or implement communications for CS/CJ-series or CP-series Programmable Controllers (PLCs) or NSJ Controllers.

Name Cat. No. Contents

SYSMAC CS/CJ/CP/NSJ Series CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D-CPU@@H, CS1D-CPU@@S, CJ1H-CPU@@H-R, CJ1G-CPU@@, CJ1M-CPU@@, CJ1G-CPU@@P, CJ1G/H-CPU@@H, CJ2H-CPU6@-EIP, CJ2H-CPU6@, CS1W-SCU@@-V1, CS1W-SCB@@-V1, CJ1W-SCU@@-V1, CP1H-X@@@@-@, CP1H-XA@@@@-@, CP1H-Y@@@@-@, CP1L-M/L@@@-@, CP1E-E@@D@-@, CP1E-N@@D@-@, NSJ@-@@@@(B)-G5D, NSJ@-@@@@(B)-M3D Communications Commands Reference Manual

SYSMAC CS/CJ/NSJ Series CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1DCPU@@H, CS1D-CPU@@S, CJ2H-CPU6@-EIP, CJ2HCPU6@, CJ1H-CPU@@H-R, CJ1G-CPU@@, CJ1MCPU@@, CJ1G-CPU@@P, C J 1G /H -C P U @@H, NSJ@- @@@@(B)-G5D, NSJ@-@@@@(B)-M3D Programmable Controllers Instructions Reference Manual

SYSMAC CS/CJ/NSJ Series CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H, CS1D-CPU@@H, CS1D-CPU@@S, CJ1G-CPU@@, CJ1M-CPU@@, CJ1G-CPU@@ NSJ@-@@@@(B)Programmable Controllers Programming 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 Series CS1G/H-CPU@@-EV1, CS1G/H-CPU@@H Programmable Controllers Operation Manual

SYSMAC CJ Series CJ1G-CPU@@, CJ1M-CPU@@, CJ1G-CPU@@P, CJ 1G / H CPU@@H Programmable Controllers Operation Manual

SYSMAC CJ Series CJ1M-CPU@@ Built-in I/O Operation Manual

G5D, NSJ@-@@@@(B)-M3D

P, CJ 1G /H - C P U @@H,

W342 Describes the communications commands used

with CS-series, CJ-series, and CP-series PLCs and NSJ Controllers. (This manual)

W474 Describes the ladder diagram programming

instructions supported by CS/CJ-series PLCs and NSJ Controllers.

W394 This manual describes programming and other

methods to use the functions of the CS/CJ-series PLCs and NSJ Controllers.

W405 Provides an outline of and describes the design,

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

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.

Name Cat. No. Contents

SYSMAC CJ Series CJ2H-CPU6@-EIP, CJ2H-CPU6@ CPU Unit Software User’s Manual

SYSMAC CJ Series CJ2H-CPU6@-EIP, CJ2H-CPU6@ CPU Unit Hardware User’s Manual

SYSMAC CS/CJ Series CS1W-EIP21, CJ1W-EIP21, CJ2H-CPU6@-EIP EtherNet/IP Units Operation Manual

SYSMAC One NSJ Series NSJ5-TQ@@(B)-G5D, NSJ5-SQ@@(B)-G5D, NSJ8TV@@(B)-G5D, NSJ10-TV@@(B)-G5D, NSJ12-TS@@(B)- G5D, NSJ5-TQ@@(B)-M3D, NSJ5-SQ@@(B)-M3D, NSJ8- TV@@(B)-M3D, NSJW-ETN21, NSJW-CLK21-V1, NSJWIC101 NSJ Controllers Operation Manual

SYSMAC CP Series CP1H-X40D@-@, CP1H-XA40D@-@, CP1H-Y20DT-D CP1H CPU Unit Operation Manual

SYSMAC CP Series CP1H-X@@@@-@, CP1H-XA@@@@-@, CP1H-Y@@@@- CP1H CPU Uni

SYSMAC CP Series CP1L-L10D@-@,

CP1L-L14D@-@, CP1L-L20D@-@, CP1L-M30D@-@, CP1L-M40D@-@, CP1L-M60D@-@

CP1L CPU Unit Operation Manual SYSMAC CP Series CP1E CPU Unit Hardware User's

Manual CP1E-E@@D@-@ CP1E-N@@D@-@

t Programming Manual

W473 Describes the following for CJ2 CPU Units:

• CPU Unit operation

• Internal memory

• Programming

• Settings

• Function built into the CPU Unit

Also refer to the Hardware User's Manual (W472)

W472 Describes the following for CJ2 CPU Units:

• Overview and features

• Basic system configuration

• Part nomenclature and functions

• Mounting and setting procedure

• Remedies for errors

Also refer to the Software User's Manual (W473)

W465 Describes the built-in EtherNet/IP port and Ether-

Net/IP Units. Describes basic settings, tag data links, FINS

communication, and other functions.

W452 Provides basic specifications on NSJ Controllers,

including an overview, designing, installation, and maintenance.

W450 Provides basic specifications on CP-series CP1H

PLCs, including an overview, designing, installation, and maintenance.

W451 Provides information on programming CP-series

PLCs.

W462 Provides basic specifications on CP-series CP1L

PLCs, including an overview, designing, installation, and maintenance.

W479 Describes the following information for CP1E

PLCs.

• Overview and features

• Basic system configuration

• Part names and functions

• Installation and settings

• Troubleshooting

Name Cat. No. Contents

SYSMAC CP Series CP1E CPU Unit Software User's Manual CP1E-E@@D@-@ CP1E-N@@D@-@

SYSMAC CP Series CP1E CPU Unit Instructions Reference Manual CP1E-E@@D@-@ CP1E-N@@D@-@

SYSMAC CXONE-AL@@C-V@/AL@@D-V@ CX-One FA Integrated Tool Package Setup Manual

SYSMAC CXONE-AL@@C-V@/, CXONE-AL@@D-V@, CS/CJ/CP/ NSJ Series CX-Integrator Operation Manual

SYSMAC WS02-CX@@-V@ CX-Programmer Operation Manual

SYSMAC CX-Programmer WS02-CX@@-V@ Operation Manual: Function Blocks/Structured Text

SYSMAC WS02-CX@@-V@ CX-Programmer Operation Manual: SFC

W480 Describes the following information for CP1E

PLCs.

• CPU Unit operation

• Internal memory

• Programming

• Settings

• CPU Unit built-in functions

• Interrupts

• High-speed counter inputs

• Pulse outputs

• Serial communications

• Other functions

W483 Describes each programming instruction in detail.

W463 Provides an overview of the CX-One FA Inte-

grated Tool Package and CX-One installation procedures.

W464 Describes setting and monitoring networks.

W446 Describes operating procedures for the CX-Pro-

grammer Support Software running on a Windows computer.

W447 Describes specifications and procedures required

to use function blocks/structured text.

W469 Describes specifications and procedures required

to use SFC programming functions.

Section 1 introduces the C-mode commands and FINS commands, and explains the relationship between them.

Section 2 provides an overview of C-mode commands.

Section 3 provides an overview of FINS commands.

Section 4 provides detailed descriptions of the C-mode commands.

Section 5 provides detailed descriptions of the FINS commands.

!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.

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.

xii

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.

xiii

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.

xiv

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

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.

xvi

!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. Serious accidents may result from abnormal operation if proper measures are not provided.

!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 The CS1-H, CJ1-H, CJ1M, or CS1D CPU Unit automatically backs 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 (A402.04) is ON.

!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.

xvii

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. 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 places:

• Locations subject to direct sunlight.

• Locations subject to temperatures or humidity outside the range specified in the specifications.

• Locations subject to condensation as the result of severe changes in 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.

xviii

Application Precautions 5

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. A Programming Console can, however, be used to edit multitask programs originally created with the CX-Programmer.

!WARNING Always heed these precautions. Failure to abide by the following precautions

could lead to serious or possibly fatal injury.

• Always connect to a class-3 ground (to 100 Ω or less) when installing the Units. Not connecting to a class-3 ground may result in electric shock.

• A class-3 ground (to 100 Ω or less) must be installed when connecting the GR and LG terminals on the Power Supply Unit.

• Always turn OFF the power supply to the PLC before attempting any of the following. Not turning OFF the power supply may result in malfunction or electric shock.

• Mounting or dismounting Power Supply Units, I/O Units, CPU Units, Inner Boards, or any other Units.

• Assembling the Units.

• Setting DIP switches or rotary switches.

• Connecting cables or wiring the system.

• Connecting or disconnecting the connectors.

!Caution Failure to abide by the following precautions could lead to faulty operation of

the PLC or the system, or could damage the PLC or PLC Units. Always heed these precautions.

• The user program and parameter area data in the CS1-H, CS1D, CJ1-H, and CJ1M CPU Units are backed up in the built-in flash memory. The BKUP indicator will light on the front of the CPU Unit when the backup operation is in progress. Do not turn OFF the power supply to the CPU Unit when the BKUP indicator is lit. The data will not be backed up if power is turned OFF.

• When using a CS-series CS1 CPU Unit for the first time, install the CS1W-BAT01 Battery provided with the Unit and clear all memory areas from a Programming Device before starting to program. (Not required for CS1-H, CJ1, CJ1-H, CJ1M, or CS1D CPU Units.)

• When using the internal clock for a CS-series CS1 CPU Unit, turn ON power after installing the battery and set the clock from a Programming Device or using the DATE(735) instruction. The clock will not start until the time has been set. (Not required for CS1-H, CJ1, CJ1-H, CJ1M, or CS1D CPU Units.)

• When using a CS1-H, CJ1, CJ1-H, CJ1M, or CS1D CPU Unit, the PLC Setup is set to specify using the mode set on the Programming Console, and a Programming Console is not connected, the CPU Unit will start in RUN mode. This is the default setting in the PLC Setup. A CS1 CPU Unit will start in PROGRAM mode under the same conditions.

xix

Application Precautions 5

• When creating an AUTOEXEC.IOM file from a Programming Device (a Programming Console or the CX-Programmer) to automatically transfer data at startup, set the first write address to D20000 and be sure that the size of data written does not exceed the size of the DM Area. When the data file is read from the Memory Card at startup, data will be written in the CPU Unit starting at D20000 even if another address was set when the AUTOEXEC.IOM file was created. Also, if the DM Area is exceeded (which is possible when the CX-Programmer is used), the remaining data will be written to the EM Area.

• Always turn ON power to the PLC before turning ON power to the control system. If the PLC power supply is turned ON after the control power supply, temporary errors may result in control system signals because the output terminals on DC Output Units and other Units will momentarily turn ON when power is turned ON to the PLC.

• Fail-safe measures must be taken by the customer to ensure safety in the event that outputs from Output Units remain ON as a result of internal circuit failures, which can occur in relays, transistors, and other elements.

• 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.

• Interlock circuits, limit circuits, and similar safety measures in external circuits (i.e., not in the Programmable Controller) must be provided by the customer.

• Do not turn OFF the power supply to the PLC when data is being transferred. In particular, do not turn OFF the power supply when reading or writing a Memory Card. Also, do not remove the Memory Card when the BUSY indicator is lit. To remove a Memory Card, first press the memory card power supply switch and then wait for the BUSY indicator to go out before removing the Memory Card.

• If the I/O Hold Bit is turned ON, the outputs from the PLC will not be turned OFF and will maintain their previous status when the PLC is switched from RUN or MONITOR mode to PROGRAM mode. Make sure that the external loads will not produce dangerous conditions when this occurs. (When operation stops for a fatal error, including those produced with the FALS(007) instruction, all outputs from Output Unit will be turned OFF and only the internal output status will be maintained.)

• The contents of the DM, EM, and HR Areas in the CPU Unit are backed up by a Battery. If the Battery voltage drops, this data may be lost. Provide countermeasures in the program using the Battery Error Flag (A402.04) to re-initialize data or take other actions if the Battery voltage drops.

• When supplying power at 200 to 240 VAC for CS-series PLCs, always remove the metal jumper from the voltage selector terminals. The product will be destroyed if 200 to 240 VAC is supplied while the metal jumper is attached.

• Always use the power supply voltages specified in the operation manuals. An incorrect voltage may result in malfunction or burning.

• Take appropriate measures to ensure that the specified power with the rated voltage and frequency is supplied. Be particularly careful in places where the power supply is unstable. An incorrect power supply may result in malfunction.

• Install external breakers and take other safety measures against short-circuiting in external wiring. Insufficient safety measures against short-circuiting may result in burning.

Application Precautions 5

• Do not apply voltages to the Input Units in excess of the rated input voltage. Excess voltages may result in burning.

• Do not apply voltages or connect loads to the Output Units in excess of the maximum switching capacity. Excess voltage or loads may result in burning.

• Separate the line ground terminal (LG) from the functional ground terminal (GR) on the Power Supply Unit before performing withstand voltage tests or insulation resistance tests. Not doing so may result in burning.

• Install the Units properly as specified in the operation manuals. Improper installation of the Units may result in malfunction.

• With CS-series PLCs, be sure that all the Unit and Backplane mounting screws are tightened to the torque specified in the relevant manuals. Incorrect tightening torque may result in malfunction.

• Be sure that all the mounting screws, terminal screws, and cable connector screws are tightened to the torque specified in the relevant manuals. Incorrect tightening torque may result in malfunction.

• Leave the label attached to the Unit when wiring. Removing the label may result in malfunction if foreign matter enters the Unit.

• Remove the label after the completion of wiring to ensure proper heat dissipation. Leaving the label attached may result in malfunction.

• Use crimp terminals for wiring. Do not connect bare stranded wires directly to terminals. Connection of bare stranded wires may result in burning.

• Wire all connections correctly.

• Double-check all wiring and switch settings before turning ON the power supply. Incorrect wiring may result in burning.

• Mount Units only after checking terminal blocks and connectors completely.

• Be sure that the terminal blocks, Memory Units, expansion cables, and other items with locking devices are properly locked into place. Improper locking may result in malfunction.

• Check switch settings, the contents of the DM Area, and other preparations before starting operation. Starting operation without the proper settings or data may result in an unexpected operation.

• Check the user program for proper execution before actually running it on the Unit. Not checking the program may result in an unexpected operation.

• Confirm that no adverse effect will occur in the system before attempting any of the following. Not doing so may result in an unexpected operation.

• Changing the operating mode of the PLC (including the setting of the startup operating mode).

• Force-setting/force-resetting any bit in memory.

• Changing the present value of any word or any set value in memory.

• Do not pull on the cables or bend the cables beyond their natural limit. Doing either of these may break the cables.

• Do not place objects on top of the cables or other wiring lines. Doing so may break the cables.

• Do not use commercially available RS-232C personal computer cables. Always use the special cables listed in this manual or make cables

xxi

Application Precautions 5

according to manual specifications. Using commercially available cables may damage the external devices or CPU Unit.

• Never connect pin 6 (5-V power supply) on the RS-232C port on the CPU Unit to any device other than an NT-AL001 or CJ1W-CIF11 Adapter. The external device or the CPU Unit may be damaged.

• When replacing parts, be sure to confirm that the rating of a new part is correct. Not doing so may result in malfunction or burning.

• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any static built-up. Not doing so may result in malfunction or damage.

• When transporting or storing circuit boards, cover them in antistatic material to protect them from static electricity and maintain the proper storage temperature to protect the LSIs, ICs, and other components.

• Do not touch circuit boards or the components mounted to them with your bare hands. There are sharp leads and other parts on the boards that may cause injury if handled improperly.

• Do not short the battery terminals or charge, disassemble, heat, or incinerate the battery. Do not subject the battery to strong shocks. Doing any of these may result in leakage, rupture, heat generation, or ignition of the battery. Dispose of any battery that has been dropped on the floor or otherwise subjected to excessive shock. Batteries that have been subjected to shock may leak if they are used.

• UL standards required that batteries be replaced only by experienced technicians. Do not allow unqualified persons to replace batteries.

• Dispose of the product and batteries according to local ordinances as they apply. Have qualified specialists properly dispose of used batteries as industrial waste.

• With a CJ-series PLC, the sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O Units, and CPU Bus Units must be completely locked (until they click into place). The Unit may not operate properly if the sliders are not locked in place.

• With a CJ-series PLC, always connect the End Plate to the Unit on the right end of the PLC. The PLC will not operate properly without the End Plate.

• Unexpected operation may result if inappropriate data link tables or parameters are set. Even if appropriate data link tables and parameters have been set, confirm that the controlled system will not be adversely affected before starting or stopping data links.

• CPU Bus Units will be restarted when routing tables are transferred from a Programming Device to the CPU Unit. Restarting these Units is required to read and enable the new routing tables. Confirm that the system will not be adversely affected before allowing the CPU Bus Units to be reset.

xxii

SECTION 1

Introduction

This section introduces the C-mode commands and FINS commands, and explains the relationship between them.

1-1 Overview of Communications Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 C-mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-3 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview of Communications Commands Section 1-1

1-1 Overview of Communications Commands

Communications Commands Addressed to CS/CJ/CP/NSJ-series Units

A CS/CJ/CP-series CPU Unit or NSJ Controller can receive the following communications commands.

C-mode commands via Host Link

Communications commands

FINS commands

C-mode Commands C-mode commands are specialized Host Link communications commands.

They are issued by a host computer and sent to a CPU Unit. The devices that can be connected for serial communications are the CPU Unit, a Serial Communications Unit, and a Serial Communications Board.

FINS Commands FINS commands are message service communications commands. They do

not depend on a particular transmission path. They can be used for communications on various networks (Controller Link, Ethernet, etc.) and for serial communications (Host Link). They can be issued from a CPU Unit, Special I/O Unit, or host computer, and they can also be sent to any of these. The specific commands that can be sent depend on the destination.

This manual explains commands sent to CS/CJ/CP-series CPU Units and NSJ Controllers, when the commands are issued from a CPU Unit or a host computer connected by Host Link.

Via CMND(490)/SEND(090)/RECV(098)

Via Host Link

Note When the source of the commands is a CPU Unit, the FINS commands are

sent by means of CMND(490)/SEND(090)/RECV(098). When the source is a host computer, the FINS commands are issued using Host Link protocol.

1-2 C-mode Commands

The following table lists the C-mode (Host Link) commands. For details, refer to SECTION 4 C-mode Commands.

Type Header

I/O memory reading

code

RR CIO AREA READ Reads the specified number of words beginning with the

RL LR AREA READ Reads the specified number of words beginning with the

RH HR AREA READ Reads the specified number of words beginning with the

RC TIMER/COUNTER PV READ Reads the specified number of words of the timer/counter

RG TIMER/COUNTER STATUS

READ

RD DM AREA READ Reads the specified number of words beginning with the

RJ AR AREA READ Reads the specified number of words beginning with the

RE EM AREA READ Reads the specified number of words beginning with the

Name Function

designated CIO word.

designated LR word.

designated HR word.

PV beginning with the designated word. Reads the specified number of words of the timer/counter

status beginning with the designated word.

designated DM word.

designated AR word.

designated EM word.

C-mode Commands Section 1-2

Type Header

I/O memory writing

Timer/counter SV reading

Timer/counter SV changing

CPU Unit status MS STATUS READ Reads the CPU Unit’s operating conditions (operating

Forced set/reset

PLC model code reading

Testing TS TEST Returns, just as it is, a single block that was sent from the

Program area accessing

code

WR CIO AREA WRITE Writes the specified data in word units beginning with the

WL LR AREA WRITE Writes the specified data in word units beginning with the

WH HR AREA WRITE Writes the specified data in word units beginning with the

WC TIMER/COUNTER PV WRITE Writes the specified timer/counter PV data in word units

WD DM AREA WRITE Writes the specified data in word units beginning with the

WJ AR AREA WRITE Writes the specified data in word units beginning with the

WE EM AREA WRITE Writes the specified data in word units beginning with the

R# TIMER/COUNTER SV READ 1Reads in four digits BCD the constant SV that is written as

R$ TIMER/COUNTER SV READ 2Finds the specified timer/counter instruction, beginning

R% TIMER/COUNTER SV READ 3Finds the specified timer/counter instruction, beginning

W# TIMER/COUNTER SV

CHANGE 1

W$ TIMER/COUNTER SV

CHANGE 2

W% TIMER/COUNTER SV

CHANGE 3

SC STATUS CHANGE Changes the CPU Unit’s operating mode. MF ERROR READ Reads the CPU Unit’s error information (i.e., all fatal or

KS FORCED SET Forcibly sets one designated bit. KR FORCED RESET Forcibly resets one designated bit. FK MULTIPLE FORCED

SET/RESET

KC FORCED SET/RESET CAN-

CEL

MM PLC MODEL READ Reads the model code of the CPU Unit.

RP PROGRAM READ Reads, in one batch, the contents of the CPU Unit’s user

WP PROGRAM WRITE Writes into the CPU Unit’s user program area the

Name Function

designated CIO word.

designated LR word.

designated HR word.

beginning with the designated word.

designated DM word.

designated AR word.

designated EM word.

an operand of the designated timer/counter instruction.

with the designated program address, and reads the constant SV in four digits or the word in which the SV is stored.

with the designated program address, and reads the constant SV in four digits (BCD) or the word in which the SV is stored.

Changes the SV of the specified timer/counter instruction to a new constant SV.

Finds the specified timer/counter instruction, beginning with the designated program address in the user program, and changes the constant SV in four digits (BCD) or the word in which the SV is stored to a new constant SV or storage word.

mode, forced set/reset status, and fatal errors).

non-fatal errors currently in effect).

Forcibly sets/resets/cancels multiple designated bits.

Cancels all forced set/reset status.

host computer.

program at the machine language (object) level.

machine language (object) sent from the host computer.

FINS Commands Section 1-3

Type Header

I/O table creation MI I/O TABLE CREATE Creates an I/O table with the contents of the actual I/O

I/O memory area registration and reading

Host Link communications processing

code

QQMR REGISTER I/O MEMORY Registers the I/O memory words or bits that are to be

QQIR READ I/O MEMORY Reads the registered I/O memory words/bits all at once. XZ ABORT (command only) Aborts the operation being performed by a Host Link com-

** INITIALIZE (command only) Initializes the transfer control procedures for all Host Link

IC Undefined command

(response only)

Name Function

configuration.

read.

mand, and then returns to the initial status.

Units. This is the response when the command header code

cannot be decoded.

1-3 FINS Commands

The following table lists the FINS commands. For details, refer to SECTION 5 FINS Commands.

Type Command

I/O memory area access

Parameter area access

Program area access

Operating mode changes

Machine configuration reading

Status reading 06 01 CPU UNIT STATUS READ Reads the status of the CPU Unit.

Time data access 07 01 CLOCK READ Reads the present year, month, date,

code

MR SR

01 01 MEMORY AREA READ Reads the contents of consecutive I/O mem-

01 02 MEMORY AREA WRITE (See

note.)

01 03 MEMORY AREA FILL (See note.) Writes the same data to the specified range

01 04 MULTIPLE MEMORY AREA READ Reads the contents of specified non-consec-

01 05 MEMORY AREA TRANSFER (See

note.)

02 01 PARAMETER AREA READ Reads the contents of consecutive parame-

02 02 PARAMETER AREA WRITE (See

note.)

02 03 PARAMETER AREA FILL (CLEAR)

(See note.) 03 06 PROGRAM AREA READ Reads the UM (User Memory) area. 03 07 PROGRAM AREA WRITE (See

note.) 03 08 PROGRAM AREA CLEAR (See

note.) 04 01 RUN (See note.) Changes the CPU Unit’s operating mode to

04 02 STOP (See note.) Changes the CPU Unit’s operating mode to

05 01 CPU UNIT DATA READ Reads CPU Unit data. 05 02 CONNECTION DATA READ Reads the model numbers of the device cor-

06 20 CYCLE TIME READ Reads the maximum, minimum, and average

07 02 CLOCK WRITE (See note.) Changes the present year, month, date,

Name Function

ory area words. Writes the contents of consecutive I/O mem-

ory area words.

of I/O memory area words.

utive I/O memory area words. Copies the contents of consecutive I/O mem-

ory area words to another I/O memory area.

ter area words. Writes the contents of consecutive parame-

ter area words. Clears the specified range of parameter area

words.

Writes to the UM (User Memory) area.

Clears a specified range of the UM (User Memory) area.

RUN or MONITOR.

PROGRAM.

responding to addresses.

cycle time.

minute, second, and day of the week.

minute, second, or day of the week.

FINS Commands Section 1-3

Type Command

Message display 09 20 MESSAGE READ/CLEAR Reads and clears messages, and reads

Access rights 0C 01 ACCESS RIGHT ACQUIRE (See

Error log 21 01 ERROR CLEAR (See note.) Clears errors or error messages.

FINS write access log

File memory 22 01 FILE NAME READ Reads file device data.

Debugging 23 01 FORCED SET/RESET (See note.) Force-sets or force-resets bits, or releases

code

MR SR

note.)

0C 02 ACCESS RIGHT FORCED

ACQUIRE

0C 03 ACCESS RIGHT RELEASE Releases the access right that has been

21 02 ERROR LOG READ Reads the error log. 21 03 ERROR LOG CLEAR (See note.) Clears all error log records. 21 40 FINS WRITE ACCESS LOG READ The CPU Unit automatically keeps a log of

21 41 FINS WRITE ACCESS LOG

CLEAR (See note.)

22 02 SINGLE FILE READ Reads a specified length of file data from a

22 03 SINGLE FILE WRITE (See note.) Writes a specified length of file data from a

22 04 FILE MEMORY FORMAT (See

note.)

22 05 FILE DELETE (See note.) Deletes specified files stored in the file

22 07 FILE COPY (See note.) Copies files from one file device to another

22 08 FILE NAME CHANGE (See note.) Changes a file name. 22 0A MEMORY AREA–FILE TRANSFER

(See note.)

22 0B PARAMETER AREA–FILE TRANS-

FER (See note.)

22 0C PROGRAM AREA–FILE TRANS-

FER (See note.)

22 15 DIRECTORY CREATE/DELETE

(See note.)

22 20 MEMORY CASSETTE TRANS-

FER (CP1H/CP1L CPU Units only)

23 02 FORCED SET/RESET CANCEL

(See note.)

Name Function

FAL/FALS messages. Acquires the access right as long as no other

device holds it. Acquires the access right even if another

device already holds it.

acquire.

any access for FINS write commands. This command reads this log.

Clears the FINS write access log.

specified position within a single file.

specified position within a single file. Formats (initializes) the file device.

device.

file device in the same system.

Transfers or compares data between the I/O memory area and the file device.

Transfers or compares data between the parameter area and the file device.

Transfers or compares data between the UM (User Memory) area and the file device.

Creates or deletes a directory.

Transfers and verifies data between a Memory Cassette and the CPU Unit.

force-set status. Cancels all bits that have been force-set or

force-reset.

Note These commands will not be accepted and an end code of 2102 hex (cannot

write due to protection) will be returned if the Write Protection from FINS Commands Sent to CPU Units via Networks option is selected in the PLC Setup for a CS/CJ-series CPU Unit with unit version 2.0 or later, for a CPseries CPU Unit, or for an NSJ Controller.

FINS Commands Section 1-3

Overview of C-mode Commands

This section provides an overview of C-mode (Host Link) commands.

2-1 C-mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-2 Command/Response Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2-3 Application Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2-4 Precautions when Reusing Programs from Earlier Models . . . . . . . . . . . . . . 15

2-4-1 C-series Host Link Units with 1:N Host Link Format Selected . . . . 15

2-4-2 C-series Host Link Units with 1:1 Host Link Format Selected . . . . 20

2-4-3 C-mode Command Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SECTION 2

C-mode Commands Section 2-1

2-1 C-mode Commands

C-mode (Host Link) commands form a command/response system for serial communications (Host Link Mode) to perform various control operations between a CPU Unit and a host computer directly connected to it. These operations include reading from and writing to I/O memory, changing operating modes, executing forced set and forced reset operations, and so on.

C-mode command

Response

C-mode command

Response

Note 1. There are two Host Link formats: the 1:N Host Link (with N ≥ 1) and the 1:1

Host Link.

• The 1:1 Host Link is the earlier Host Link format supported by C-series PLCs, such as the C200H, C1000H, and C2000H.

• The built-in peripheral and RS-232C ports of CS/CJ-series CPU Units, built-in serial ports of N-type CP1E CPU Units, serial port C on NSJ Controllers, and serial ports 1 and 2 on the Option Board for CP-series CPU Units support only the 1:N Host Link format. When a Serial Communications Board or Unit (version 1.2 or later) is being used, a 1:1 Host Link program created for a C-series PLC (C200H/C1000H/ C2000H) can be reused by selecting the Host Link 1:1 format.

In this manual, the term “Host Link” generally indicates the 1:N Host Link.

2. Unlike FINS commands, C-mode commands can only be addressed to a CPU Unit, and they cannot be used for message service outside of the local network. They cannot be used for functions such as file operations.

C-mode (Host Link) commands can be sent from a host computer connected to a CS/CJ-series Host Link Unit. Up to 32 PLCs (Host Link Units) can be connected to a single host computer. For identification, each Host Link Unit is assigned a unit number from 0 to 31.

The length of a single unit of a command or response exchange is called a “frame.” A single frame contains a maximum of 131 characters of data. Characters are sent and received as ASCII.

Note For a CS/CJ-series PLC, a “Host Link Unit” can be the CPU Unit, a Serial

Communications Unit, or a Serial Communications Board.

A maximum of 30 words of data can be transferred for the first command frame and a maximum of 31 words of data can be transferred for other command frames when reading or writing word data in I/O memory. When reading/writing more than 30 words of data, the data transfer will be processed in multiple transmissions, with 30 words in the first and up to 31 words in each of

Command/Response Formats Section 2-2

)

the following transmissions until the number of words set in the command has been processed.

The frame formats for Host Link commands sent from a host computer and responses returned by the PLC receiving the commands are explained in the following section.

2-2 Command/Response Formats

Single-frame Commands If a command is not more than 131 characters long, communications can be

completed by sending a single command frame. This is called a “single-frame command.”

Command Frame Format

Terminator

Header code

Unit number (BCD)

Te xt

FCS

• @: Must be attached at the beginning of the command.

• Unit number: Set in BCD from 0 to 31 for each Host Link Unit.

• Header code: Specified in two characters.

• Text: Set parameters corresponding to command code.

• FCS: Calculate 2-character FCS (frame check sequence) at host computer. For details on calculating FCS, refer to FCS Cal- culations later in this section.

• Terminator: Set “*” and CR (CHR$(13)) as two characters to indicate the end of the command.

Single-frame Response If a response is not more than 131 characters long, the communications can

be completed by returning one response frame. This is called a “single-frame response.”

Response Frame Format

Header code

Unit number (BCD

End code (hexadecimal)

Te xt

FCS

• @: Must be attached at the beginning of the response.

• Unit number: Set in BCD from 0 to 31 for each Host Link Unit.

• Header code: The command code that was received is returned.

• End code: The results (error status, etc.) of command execution is returned.

• Text: Returned only if there is read data.

Terminator

Command/Response Formats Section 2-2

• FCS: The 2-character FCS (frame check sequence) is returned.

• Terminator: Two characters indicating the end of the command, “*” and CR (CHR$(13)), are returned.

Error Response Formant If a reception error or an error in executing the command occurs, a response

is returned with no text.

Terminator

FCS

End code (hexadecimal)

Header code

Unit number (BCD)

Partitioned Commands If a command is longer than 131 characters, the command’s text is partitioned

by sending a delimiter [CR code, CHR$(13)] instead of a terminator at the end of each command frame until the last one. A terminator is sent at the end of the last frame. The procedure is given below for three command frames.

Note When sending command frames for writing (WR, WL, WC, WD, etc.), be care-

ful not to partition into separate frames data that is to be written into the same word.

1,2,3... 1. From the host computer, attach a delimiter (CR) at the end of command

frame 1 and send the frame.

2. When the PLC receives this delimiter (CR), it will return only a delimiter (CR) to the host computer.

3. From the host computer, attach a delimiter (CR) at the end of command frame 2 and send the frame.

4. When the PLC receives this delimiter (CR), it will return only a delimiter (CR) to the host computer.

5. From the host computer, attach a terminator (*CR) at the end of command frame 3 and send the frame.

6. When the PLC receives this terminator (*CR), it will return the response format with a terminator (*CR) attached to the end.

Command/Response Formats Section 2-2

The following diagram shows the command format when there are more than 131 characters.

Command frame 1 Command frame 2 Command frame 3

Host Computer

Header code

@Unit number

PLC

Te xt

FCS

Delimiter

128 characters max. 128 characters max.

Delimiter

FCS

Te xt

Delimiter

FCS

Te xt

Terminator

Te xt

FCS

Terminator

Header code

@Unit number

End code

Res

onse frame

Note A “delimiter” is a CR code [CHR$(13)] sent as a single character to indicate

the middle of a command or response.

Partitioned Responses If a response is more than 131 characters long, the response from the PLC is

partitioned by returning a delimiter (CR code, CHR$(13)) instead of a terminator at the end of each frame until the last one. A terminator is returned at the end of the last frame.

In the following example procedure, the response is partitioned into three frames.

1,2,3... 1. When the PLC receives the command frame from the host computer, it re-

turns response frame 1 with a delimiter (CR) at the end to the host computer.

2. Only a delimiter (CR) is sent from the host computer to the PLC.

3. When the PLC receives this delimiter (CR), it returns response frame 2 with a delimiter (CR) at the end to the host computer.

4. Only a delimiter (CR) is sent from the host computer to the PLC.

5. When the PLC receives this delimiter (CR), it returns response frame 3 with a terminator (*CR) at the end to the host computer.

Command/Response Formats Section 2-2

The following diagram shows the response format when there are more than 131 characters.

Command frame

Te xt

FCS

Header code

Host computer

@Unit number

131 characters max.

Terminator

Delimiter

PLC

Te xt

End code

Header code

@Unit number

Response frame 1

FCS

Delimiter

Te xt

FCS

Delimiter

Response frame 2

128 characters max. 128 characters max.

Te xt

FCS

Terminator

Response frame 3

Note 1. Frames in partitioned commands or responses must have not more than

128 characters including the delimiter/terminator.

2. Delimiters from the host computer are detected by the presence of a CR code. The delimiter will be detected even if there is data in front of it.

Command/Response Formats Section 2-2

FCS Calculations The PLC calculates the FCS (Frame Check Sequence) value for each com-

mand frame it receives, and it checks for errors by comparing that value with the FCS value sent with the command frame. The host computer must calculate the FCS value when sending a command frame.

Also, when checking for errors in response frames, the host computer must calculate the FCS value for each response frame it receives and compare that value to the FCS value sent in the response frame.

Header code

Unit number

FCS calculation range

ASCII

Code

@ 40 0100 0000

EOR

1 31 0011 0001

EOR

0 30 0011 0000

EOR

R 52 0101 0010

1 31 0011 0001 0100 0010

Calculation result (See note.)

4 Hex

Te xt

•

Note The FCS is an 8-bit value converted into two ASCII characters. The 8-bit

value is the result of an exclusive OR sequentially performed between each character in a transmission, from the first character in the frame to the last character of the text in that frame. Non-ASCII data, however, may sometimes be sent in the text data. If the data length is 7 bits, the leftmost bit of each character is masked before the FCS is calculated.

2 Hex

Terminator

FCS

The value is converted to hexadecimal and handled as ASCII.

Application Example Section 2-3

2-3 Application Example

Sending a Host Link Command from a Host Computer

In this example program, a Host Link command is sent from a host computer and a response is received.

10 ’CS1 SAMPLE PROGRAM FOR EXCEPTION 20 CLOSE 30 CLS 40 OPEN “COM:E73”AS#1 50 *KEYIIN 60 INPUT ”DATA 70 IF S$=””THEN GOTO 190 80 PRINT ”SEND DATA=”;S$ 90 ST$=S$ 100 INPUT ”SEND OK? Y or N?=”,BS 110 IF B$=”Y” THEN GOTO 130 ELSE GOTO *KEYIN 120 S$=ST$ 130 PRINT #T,S$ Sends command to PLC. 140 INPUT #1,R$ Receives command from PLC. 150 PRINT ”RECV DATA=”;R$ 160 IF MID$(R$,4,2)=”EX”THEN GOTO 210 Identifies command. 170 IF RIGHT$(R$,1)<>”*”THEN S$=””:GOTO 130 180 GOTO *KEYIN 190 CLOSE 1 200 END 210 PRINT ”EXCEPTION!!DATA” 220 GOTO 140

–”,S

Explanation

1,2,3... 1. The host computer’s transmission/reception program is started up, and the

Host Link command is input.

2. The Host Link command that was input is sent to the PLC, and the data that is received is displayed on the screen.

Note The example program up to this point does not include an error processing

routine in case reception is not normal (e.g., if there is no FCS). Include error processing routines when creating an actual program.

400 *FCSCHCK 410 L=LEN(RESPONSE$) Transmission/reception data 420 Q=0:FCSCK$=”” 430 A$=RIGHT$(RESPONSE$,1) 440 PRINT RESPONSE$,A$,L 450 IF A$=”*”THEN LENGS=LEN(RESPONSE$) ELSE LENGS=LEN(RESPONSE$) 460 FCSP$=MID$(RESPONSE$,LENGS+1,2) FCS data that is received 470 FOR I=1 TO LENGS Number of characters in FCS calculation 480 Q=ASC(MID$(RESPONSE$1,1))XOR Q 490 NEXT 1 500 FCSD$=HEX$(Q) 510 IF LEN(FCSD$) =1 THEN FCSD$=”0”+FCSD$ FCS calculation result 520 IF FCSD$<>FCSP$ THEN FCSCK$=”ERR” 530 PRINT ”FCSD$=”;FCSD$,”FCSP$=”;FCSP$,”FCSCK$=”;FCSCK$

Normal FCS reception: “ ” (space); abnormal FCS reception: “ERR”

540 RETURN

–2

–3

Precautions when Reusing Programs from Earlier Models Section 2-4

2-4 Precautions when Reusing Programs from Earlier Models

Observe the following precautions when reusing host computer programs created for communications with C-series Host Link Units.

2-4-1 C-series Host Link Units with 1:N Host Link Format Selected

Using the CPU Unit's Built-in Peripheral Port or RS-232C Port

Number of Data Words per Frame

When I/O memory data is read with the following commands, the number of data words in each response frame is different for a C-series Host Link Unit compared to the built-in peripheral and RS-232C ports on CS/CJ-series CPU Units, serial port C on NSJ Controllers, built-in serial ports of N-type CP1E CPU Units, and serial ports 1 and 2 on the Option Board for CP-series CPU Units.

With a C-series Host Link Unit, the first frame can contain up to 29 words of data (text) and the following frames can contain up to 30 words of data (text). With the built-in peripheral and RS-232C ports on CS/CJ-series CPU Units, serial port C on NSJ Controllers, built-in serial ports of N-type CP1E CPU Units, and serial ports 1 and 2 on the Option Board for CP-series CPU Units, the first frame can contain up to 30 words of data (text) and the following frames can contain up to 31 words of data (text).

Header code Name

RR CIO AREA READ RL LR AREA READ RH HR AREA READ RC TIMER/COUNTER PV READ RG TIMER/COUNTER STATUS READ

Note: The number of data words per response frame is different

for the RG command than for the other C-mode commands. For details, see the table Words per Frame for C-mode RG

Command below. RD DM AREA READ RJ AR AREA READ

Because the Units do not have the same number of words per response frame, the data may not be read properly if a host computer program originally used with a C-series Host Link Unit is reused with a CS-series CPU Unit, CJseries CPU Unit, CP-series CPU Unit, or NSJ Controller. In this case, be sure to edit the host computer program so that it is compatible with the frame format.

Note Serial Communications Boards and Units with version numbers 1.2 and later

are equipped with a Host Link model compatibility selection function that changes the Host Link function's specifications to match the frame format of other Units in the Host Link. It is not necessary to edit an existing program if the Host Link model compatibility selection function is set to match the Host Link format used in the program. For details, see Using a Serial Communica- tions Board or Unit with Version Number 1.2 or Later below.

Precautions when Reusing Programs from Earlier Models Section 2-4

Words per Frame for C-mode Commands (Except RG Command)

Units C Series CS/CJ Series CVM1 and CV Series Data words per frame

C-series Host Link Units

Other Boards and Units

C200H-LK101/LK201/ LK202 Host Link Units

C500-LK103/LK203 Host Link Units

3G2A5-LK101/LK201 Host Link Units

3G2A6-LK101/LK201/ LK202 Host Link Units

SRM1 built-in ports CPM1 built-in ports CPM1A built-in ports CQM1-CPU

ports C200HS-CPU

in ports C200HX/HG/HE-

CPU C200HW-COM@@

Communications Board ports

@@ built-in

@@ built-

@@ built-in ports

frame

--- --- 29 words 30 words

CS2H-CPU built-in ports

CS1G/H-CPU built-in ports

CS1D-CPU in ports

CJ1G/H-CPU built-in ports

CJ1G-CPU@@ built-in ports

CJ1M-CPU@@ built-in ports

CS1W-SCB21-V1/ 41-V1 (unit version: Pre-Ver. 1.2) Serial Communications Board ports

CS1W-SCU21-V1 (unit version: Pre-Ver. 1.2) Serial Communications Unit ports

CJ1W-SCU21/41 (unit version: Pre-Ver. 1.2) Serial Communications Unit ports

@@(-EIP)

@@H

@@-EV1

@@H built-

@@H

CVM1-CPU ports

CV-CPU ports

CV500-LK201 Host Link Unit

@@ built-in

30 words 31 words

Other frames

Precautions when Reusing Programs from Earlier Models Section 2-4

Words per Frame for C-mode RG Command

Units C Series CS/CJ Series CVM1 and CV Series Data words per frame

C-series Host Link Units

Other Boards and Units

C200H-LK101/LK201/ LK202 Host Link Units

C500-LK103/LK203 Host Link Units

3G2A5-LK101/LK201 Host Link Units

3G2A6-LK101/LK201/ LK202 Host Link Units

SRM1 built-in ports CPM1 built-in ports CPM1A built-in ports CQM1-CPU

ports CQM1H-CPU

in ports CQM1H-SCB

in ports C200HX/HG/HE-

CPU

C200HW-COM Communications Board ports

@@ built-in

@@ built-

@@ built-in ports

frame

--- --- 89 words 89 words

--- --- 89 words 60 words

CS2H-CPU@@(-EIP) built-in ports

CS1G/H-CPU built-in ports

CS1D-CPU in ports

CJ1G/H-CPU built-in ports

CJ1G-CPU@@ built-in ports

CJ1M-CPU ports

CS1W-SCB21-V1/41V1 (unit version: PreVer. 1.2) Serial Communications Board ports

CS1W-SCU21-V1 (unit version: Pre-Ver. 1.2) Serial Communications Unit ports

CJ1W-SCU21/41 (unit version: Pre-Ver. 1.2) Serial Communications Unit ports

@@H

@@-EV1

@@H built-

@@H

@@ built-in

CVM1-CPU ports

CV-CPU ports

CV500-LK201 Host Link Unit

@@ built-in

121 words 125 words

Other frames

Note There are several exceptions to the number of words per frame values shown

in the table above:

The following responses are returned when reading 246 words of Timer/ Counter Completion Flags through CS/CJ-series CPU Unit built-in ports, CS/ CJ-series Serial Communications Units/Boards, C200HX/HG/HE CPU Unit built-in ports, or C200HS CPU Unit built-in ports.

1st frame 2nd frame 3rd frame

121 words 124 words 1 word

The second-to-last frame contains 124 data words and the last frame contains 1 word. This also applies when the number of words is 246 + a multiple of 125 (i.e., 371 words, 496 words, 621 words, etc.).

The following responses are returned when reading 121 words of Timer/ Counter Completion Flags through CS/CJ-series Unit built-in ports.

frame 2nd frame

120 words 1 word

Precautions when Reusing Programs from Earlier Models Section 2-4

The following responses are returned when reading 121 words or 246 words through CVM1 and CV-series CPU Unit built-in ports or CVM1/CV-series Host Link Units.

Number of Words = 121

1st frame 2nd frame

121 words 0 words (terminator only)

Number of Words = 246

frame 2nd frame 3rd frame

121 words 125 words 0 words (terminator only)

The second-to-last frame contains 125 data words and the last frame contains the terminator only. This also applies when the number of words is 246 + a multiple of 125 (i.e., 371 words, 496 words, 621 words, etc.). For responses containing the terminator only, “00*CR” (00 = FCS, CR = carriage return) is returned.

Response Format for MS Command

With the MS command (STATUS READ), the response data format when using CVM1 or CV-series built-in ports or Host Link Units, is different from the response data format when using other Units.

When a CVM1/CV CPU Unit's built-in Host Link port or CVM1/CV Series Host Link Unit is used and an FAL or FALS instruction has not been executed, spaces (ASCII code 20 hex) will be included in the response data for the FAL/ FALS message. With all other Host Link Units, the FAL/FALS message data is included in the response only when an FAL or FALS instruction has been executed.

Using a Pre-Ver. 1.2 Serial Communications Board or Unit

The response formats are the same as described above under the heading Using the CPU Unit's Built-in Peripheral Port or RS-232C Port.

Using a Serial Communications Board or Unit with Version Number 1.2 or Later

The Serial Communications Board or Unit’s Host Link function can be made completely compatible with the existing PLC’s Host Link function by setting the appropriate Host Link mode (1:N or 1:1 Host Link) and the Host Link model compatibility mode.

Host Link Model Compatibility Selection Function

Serial Communications Boards and Units with version Ver. 1.2 and later are equipped with a Host Link model compatibility selection function. This function switches the Board or Unit’s Host Link specifications to match the specifications of an existing Host Link program that is being reused. The following specifications can be switched by the Host Link model compatibility function.

• Words per Response Frame Sets the number of data words per response frame when receiving the fol-

lowing I/O memory read commands (RR, RL, RH, RC, RD, RJ, or RG).

• Sets the response frame format for the STATUS READ command (MS), which varies when an FAL or FALS instruction has not been executed.

Precautions when Reusing Programs from Earlier Models Section 2-4

Host Link Model Compatibility Modes

Host link

model

compatibility

mode

A mode (CS, CJ, and

B mode (CVM1/CV)

C mode (C200H) D mode (C500/C120)

Host link model

(Model used as basis for host

computer’s program)

C Series

SRM1 built-in ports CPM1 built-in ports CPM1A built-in ports CQM1-CPU

C200HS-CPU

C200HX/HG/HE-CPU C200HW-COM@@ Communications

Board ports

CS/CJ Series

CS2H-CPU

CS1G/H-CPU

CS1G/H-CPU CS1D-CPU@@H built-in ports

CJ1G/H-CPU CJ1G-CPU@@ built-in ports CJ1M-CPU@@ built-in ports CS1W-SCB21-V1/41-V1 (unit version:

Pre-Ver. 1.2) Serial Communications Board ports

CS1W-SCU21-V1 (unit version: Pre-Ver.

1.2) Serial Communications Unit ports CJ1W-SCU21/41 (unit version: Pre-Ver.

1.2) Serial Communications Unit ports

CVM1-CPU CV-CPU@@ built-in ports CV500-LK201 Host Link Unit C200H-LK101/LK201/LK202 Host Link

Units

C500-LK103/LK203 Host Link Units 3G2A5-LK101/LK201 Host Link Units 3G2A6-LK101/LK201/LK202 Host Link

Units

@@ built-in ports

@@(-EIP) built-in ports

@@H built-in ports @@-EV1 built-in ports

@@H built-in ports

@@ built-in ports

RR, RL, RH, RC, RD,

and RJ commands

Data words per response frame Response

frame 2nd frame 1st frame 2nd frame

30 words 31 words 121

29 words 30 words 89 words 89 words Variable

RG command MS

125

words

89 words 60 words

words

command (see note)

data format

Var iable length

Fixed length

length

Note When the MS command reads the CPU Unit’s status data and an FAL or

FALS instruction has not been executed, spaces (ASCII code 20 hex) are included as the FAL/FALS message in the response frame for some models (fixed length response in the table above). In the other models, no data is included as the FAL/FALS message in the response frame (variable length response frame) if an FAL or FALS instruction has not been executed.

Precautions when Reusing Programs from Earlier Models Section 2-4

Relationship to the 1:N Host Link/1:1 Host Link Setting

The following table shows the allowed Host Link format (1:N Host Link/1:1 Host Link) settings for each Host Link model compatibility setting.

Host link model

compatibility mode

A mode (CS, CJ, and C) and B mode (CVM1/CV)

C mode (C500/C120) and D mode (C200H)

Settings for an Example Unit Replacement

Use the following settings when the existing host computer was created for a system with C500-LK103/LK203 Host Link Units and/or 3G2A5-LK101/LK201 Host Link Units, a new Serial Communications Board or Unit (Ver. 1.2 or later) is being used, and the Host Link format is 1:1 Host Link.

• Host link 1:N format/1:1 format setting: 1 (1:1 Host Link format)

• Host link model compatibility mode setting: 3 (C mode (C500/C120))

Only the 1:N Host Link format can be used.

Either the 1:N Host Link format or 1:1 Host Link format can be selected.

Host link format

2-4-2 C-series Host Link Units with 1:1 Host Link Format Selected

Using the CPU Unit's Built-in Peripheral Port or RS-232C Port

Only the 1:N Host Link format is supported by the CPU Unit’s built-in peripheral port and RS-232C port. A host computer program cannot be used if it was developed for a 1:1 Host Link.

Using a Pre-Ver. 1.2 Serial Communications Board or Unit

Only the 1:N Host Link format is supported by Pre-Ver. 1.2 Serial Communications Boards and Units. A host computer program cannot be used if it was developed for a 1:1 Host Link.

Using a Serial Communications Board or Unit with Version Number 1.2 or Later

The Serial Communications Boards and Units with version number 1.2 or later can be set to operate in 1:1 Host Link mode, so a host computer program developed for a 1:1 Host Link with C-series PLCs (C200H, C1000H, and C2000H) can be reused in a CS/CJ Series Host Link. (The 1:1 Host Link for-

Precautions when Reusing Programs from Earlier Models Section 2-4

mat can be selected with the 1:N format/1:1 format setting in the allocated DM Area settings.)

Host link

format

1:N format With this Host Link

1:1 format With this Host Link

Usage Applicable PLC models Remarks

format, the connection configuration (host: PLC) can be either 1:1 or 1:N.

Earlier versions of these Boards/Units supported only the 1:N format.

format, the connection configuration (host: PLC) can be 1:1 only.

C Series

SRM1 built-in ports CPM1 built-in ports CPM1A built-in ports CQM1-CPU

C200HS-CPU C200HX/HG/HE-CPU@@ built-in ports

C200HW-COM Board ports

CS/CJ Series

CJ2H-CPU

CS1G/H-CPU

CS1D-CPU

CJ1G/H-CPU CJ1G-CPU@@ built-in ports CJ1M-CPU@@ built-in ports

Earlier versions (unit version: Pre-Ver. 1.2)

CS1W-SCB21-V1/41-V1 Serial Communications Board ports

CS1W-SCU21-V1 Serial Communications Unit ports

CJ1W-SCU21/41 Serial Communications Unit ports

CVM1/CV Series

CVM1-CPU

CV-CPU CV500-LK201 Host Link Unit

C Series

C500-LK103/LK203 Host Link Units 3G2A5-LK101/LK201 Host Link Units 3G2A6-LK101/LK201/LK202 Host Link

Units

C Series

C200H-LK101/LK201/LK202 Host Link Units

C Series

C500-LK103/LK203 Host Link Units 3G2A5-LK101/LK201 Host Link Units 3G2A6-LK101/LK201/LK202 Host Link

Units

C Series

C200H-LK101/LK201/LK202 Host Link Units

@@ built-in ports

@@ Communications

@@(-EIP) built-in ports

@@H built-in ports @@-EV1 built-in ports

@@H built-in ports

@@ built-in ports

Only the 1:N Host Link format is supported by the built-in ports on CPU Units of CS/CJ, C200HS, C200HX/HG/ HE, CPM as the ports on Host Link Units and Serial Communications Boards.

Earlier versions of the Serial Communications Boards/Units support only the 1:N Host Link format.

Only the 1:N Host Link format is supported by the built-in ports on CPU Units of CVM1/CV Series PLCs as well as the ports on Host Link Units and Serial Communications Units/Boards.

Either the 1:N Host Link or 1:1 Host Link format can be selected with these C-series Host Link Units.

@, and CQM1@ PLCs as well

Note The following diagrams show the differences in the command and response

frames with the 1:N Host Link format and 1:1 Host Link format.

Precautions when Reusing Programs from Earlier Models Section 2-4

1:N Format

• Command

0 R D

××

Unit number in host link

Header code

• Response

0 R D 0 0

Unit number in host link

Header code

1:1 Format

As shown in the following diagrams, the 1:1 format is equivalent to the 1:N format without the @ character, Host Link unit number, and FCS byte.

• Command format

R D CR

Header code

• Response format

R D 0 0 CR

Header code

End code

2-4-3 C-mode Command Support

code

Terminator

Terminato

FCS

Terminato

××

FCS

CR@

TerminatorEnd

Use the following table as reference when reusing programs for host computers developed for earlier Host Link models.

• If a command is not supported for the new model of PLC, consider using another C-mode or FINS command.

• Even if the command is supported, differences may exist in the data sizes that can be processed or in the meaning of the values if the models or Series vary.

• Refer to the applicable operation manuals for details.

Precautions when Reusing Programs from Earlier Models Section 2-4

Note Refer to information on the previous page for commands with “Caution” in the

Frame data size column.

Frame

Header

data

code

size

Cau-

RR CIO AREA

tion

Cau-

RL LR AREA

tion

Cau-

RH HR AREA

tion

Cau-

RC TIMER/

tion

Cau-

RG TIMER/

tion

Cau-

RD DM AREA

tion

Cau-

RJ AR AREA

tion

OK RE EM AREA

NA RX FILE MEM-

NA RF FILE MEM-

NA CR DM AREA

NA GM DM SIZE

Cau-

WR CIO AREA

tion

Cau-

WL LR AREA

tion

Cau-

WH HR AREA

tion

Cau-

WC TIMER/

tion

Cau-

WD DM AREA

tion

Cau-

WJ AR AREA

tion

OK WE EM AREA

NA R# TIMER/

NA R$ TIMER/

NA R% TIMER/

NA W# TIMER/

Name CS/CJ

READ

COUNTER PV READ

COUNTER STATUS READ

READ

ORY DELUXE READ

ORY READ

READ (FIXED)

CHANGE

WRITE

COUNTER PV WRITE

WRITE

COUNTER SV READ 1

COUNTER SV READ 2

COUNTER SV READ 3

COUNTER SV CHANGE 1

Series

C200HE

CPU Unit or Serial

Communications Board or Unit

--- --- --- --- --- --- --- --- None

C200HS C120 C200H

/HG/HX

CPU Unit or

Communications Board

CPU Unit

C120 (3G2A6) Host Link Unit

C200HS

C200HE/

HG/HX

C Series CVM1 and

C500 C1000H

C200H Host Link Unit

C2000H

C500F C1000HF CQM1 SRM1

C500 (3G2A5) Host Link Unit

CPM1

CPM1A

CPU Unit

or V1

CV Series

CPU Unit

V2 ---

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o Ye s N o

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Ye s Ye s Ye s N o Ye s N o Ye s N o Ye s Ye s Ye s Ye s Y e s Y e s

Yes Yes No No No No No No No No No No No No

No No No No No No Yes No Yes No No No No No

No No No No No No Yes No Yes No No No Yes No

No No No No No No No Yes Yes No No No No No

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o Ye s N o

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Ye s Ye s Ye s N o N o No Ye s N o Ye s Ye s Ye s Y e s Ye s Yes

Yes Yes No No No No No No No No No No No No

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o Ye s N o

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o N o Ye s No

s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o Ye s No

CV500 Host Link Unit

Precautions when Reusing Programs from Earlier Models Section 2-4

Frame

Header

data

code

size

NA W$ TIMER/

NA W% TIMER/

N A M S S TATU S R EA D Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes Ye s Ye s Ye s

NA SC STATUS

N A M F ER RO R R EA D Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes Ye s Ye s Ye s

NA KS FORCED SET Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

NA KR FORCED

NA FK MULTIPLE

NA FR MULTIPLE

NA KC FORCED SET/

NA MM PLC MODEL

N A T S T E S T Yes Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Y e s Y e s

NA RP PROGRAM

NA WP PROGRAM

NA MI I/O TABLE

NA QQMR/

QQIR

NA XZ ABORT (com-

NA ** INITIALIZE

NA IC Undefined

NA EX TXD

NA FA FINS MES-

NA OF FINS MES-

Name CS/CJ

COUNTER SV CHANGE 2

COUNTER SV CHANGE 3

CHANGE

RESET

FORCED SET/ RESET

FORCED SET/ RESET STATUS READ

RESET CANCEL

READ

WRITE

CREATE

mand only)

(command only)

command (response only)

RESPONSE (response only)

SAGE

SAGE (slaveinitiated)

Series

C200HE /HG/HX

CPU Unit or Serial

Communications Board or Unit

--- --- --- --- --- --- --- --- None

C200HS C120 C200H

CPU Unit or

Communications Board

CPU Unit

C120 (3G2A6) Host Link Unit

C200HS C200HE/

HG/HX

C Series CVM1 and

C200H Host Link Unit

C500 C1000H

C2000H

C500F C1000HF CQM1 SRM1

C500 (3G2A5) Host Link Unit

CPM1A

CPU Unit

CPM1

CPU Unit

or V1

CV Series

CPU Unit

V2 ---

CPU Unit

CV500 Host Link Unit

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o Ye s N o

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o N o Ye s No

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Yes Yes Yes No Yes No No No No Yes Yes No Yes No

No Yes Yes No Yes No No No No No No No No No

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s N o N o Ye s Ye s Ye s

Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Yes

NoYesNoNoNo NoNoNoNo NoNoNoNoNo

YesNo NoNoNo NoNoNoNo NoNoYesYesYes

Note When using CVM1 or CV-series built-in ports or Host Link Units, the response

data format for the MS command (STATUS READ) is different from the format for other Units. For details, refer to 4-3-23 STATUS READ – – MS.

Precautions when Reusing Programs from Earlier Models Section 2-4

Manuals for Host Link Operations

PLC Product Model (suffixes omitted) Manual type Catalog No.

CS/CJ Series Communications

commands (Cmode and FINS)

Serial Communications Unit/Board CS1W-SCB21-V1/41-V1

C200HX/HG/HE CPU Unit

C200HS CPU Unit

C Series Host Link Units C200H-LK101/201/202

CQM1 CPU Unit

CPM1 CPU Unit

CPM1A CPU Unit

SRM1 CPU Unit

CVM1 and CV Series

CPU Unit

Host Link Unit CV500-LK201

CPU Unit

Serial Communications Unit/ Board

CJ2H-CPU CS1G/H-CPU CS1G/H-CPU@@-EV1

@@(-EIP)

@@H

CS1D-CPU@@H

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

CS1W-SCB21-V1/41-V1 CS1W-SCU21-V1 CJ1W-SCU21/41

CS1W-SCU21-V1 CJ1W-SCU21/41

C200HX/HG/HE-CPU

C200HS-CPU

C500-LK201/203 3G2A5-LK101/103 3G2A6-LK101/201/202

CQM1-CPU

CPM1-

CPM1A-

SRM1-C

CVM1/CV-CPU

@@-Z

@@@@@

Reference Manual

Operation Manual

System Manual

Programming Manual

Operation Manual

W342-E1

W336-E1

W303-E1

W322-E1

W235-E1

W143-E1

W228-E1

W262-E1

W317-E1

W318-E1

W205-E1

Precautions when Reusing Programs from Earlier Models Section 2-4

Overview of FINS Commands

This section provides an overview of FINS commands.

3-1 FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3-2 Using FINS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3-2-1 Issuing and using any command (CMND (490) instruction) . . . . . . 31

3-2-2 Using with respect to a host computer connected by Host Link . . . 31

3-3 FINS Command and Response Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3-3-1 FINS Command Frame Configuration . . . . . . . . . . . . . . . . . . . . . . . 32

3-3-2 FINS Response Frame Configuration. . . . . . . . . . . . . . . . . . . . . . . . 32

3-3-3 Individual Items in Command/Response Frames . . . . . . . . . . . . . . . 33

3-4 Settings for Sending FINS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-4-1 FINS Command and Response Formats. . . . . . . . . . . . . . . . . . . . . . 35

3-4-2 Addresses in FINS Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3-4-3 Other FINS Command Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3-4-4 CMND(490) Setting Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

3-5 FINS Commands with Host Link Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3-5-1 Connection Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3-5-2 Overview of Command and Response Frames. . . . . . . . . . . . . . . . . 44

3-5-3 Sending Commands from the Computer to the CPU Unit . . . . . . . . 45

3-5-4 Sending FINS Commands to the Host Computer from the CPU Unit 49

3-5-5 Sending Commands from the CPU Unit . . . . . . . . . . . . . . . . . . . . . 50

3-5-6 Command Format Received by the Host Computer. . . . . . . . . . . . . 55

3-5-7 Response Format Returned by the Host Computer . . . . . . . . . . . . . 57

3-5-8 Flags for Network Communications. . . . . . . . . . . . . . . . . . . . . . . . . 58

3-5-9 Timing of Commands to Host Computers . . . . . . . . . . . . . . . . . . . . 59

3-5-10 Programming Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

3-6 Serial Gateway Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3-6-1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3-6-2 Types of Protocol Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

3-6-3 Converting FINS to CompoWay/F. . . . . . . . . . . . . . . . . . . . . . . . . . 67

3-6-4 Converting FINS to Modbus-RTU . . . . . . . . . . . . . . . . . . . . . . . . . . 70

3-6-5 Converting from FINS to Modbus-ASCII . . . . . . . . . . . . . . . . . . . . 73

3-6-6 Converting from FINS to Host Link FINS . . . . . . . . . . . . . . . . . . . . 74

3-6-7 Treating Serial Communications Paths as Networks . . . . . . . . . . . . 78

3-6-8 Using a PLC as the Target . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

3-6-9 Using a non-PLC Component as the Target . . . . . . . . . . . . . . . . . . . 81

3-6-10 Explanation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

3-7 Communications Frames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3-7-1 CompoWay/F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

3-7-2 Modbus-RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

3-7-3 Modbus-ASCII . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

3-7-4 Host Link FINS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

3-7-5 Sending Commands Using the CMND(490) Instruction . . . . . . . . . 90

SECTION 3

FINS Commands Section 3-1

3-1 FINS Commands

FINS commands form a command system for message services across different OMRON networks. They can be used for various control operations, such as sending and receiving data, changing operating modes, executing forced set and forced reset operations, performing file operations, and so on. FINS commands make it possible to freely communicate with Units in various networks and on CPU Racks by simply specifying the network, node, and unit.

FINS commands have the following features:

1,2,3... 1. They are defined in the application level and do not depend on lower levels

(i.e., the physical and data link levels). This allows them to be used across a variety of networks and CPU buses. Specifically, they can be used with Ethernet, Controller Link, and Host Link networks, and between CPU Units and CPU Bus Units.

Note FINS commands can be sent with UDP/IP headers when using

Ethernet and with Host Link command headers when using Host Link.

2. FINS commands can be used to access various kinds of devices besides CPU Units. Devices such as CPU Units, CPU Bus Units, personal computers (boards), and Inner Boards can be identified and specified by their unit addresses.

CPU Bus Unit

Inner Board

CPU Unit

Personal computer board

3. FINS commands support network relay operations, so they can pass through a network hierarchy to access devices on up to three network levels (including the local network).

Network 2

Network 1

Network 3

Note With CS/CJ-series CPU Units with unit version 2.0 or later, CP-series CPU

Units, or NSJ Controllers, devices can be accessed on up to 8 network levels. When the destination of a FINS command is a CPU Unit, the command can be sent through as many as 8 network levels. When the destination of a FINS command is a node other than a CPU Unit, the command can be sent through a maximum of 3 network levels.

FINS Commands Section 3-1

• The following table shows the maximum number of network levels that can be crossed by various PLC models.

PLC model Network levels

CS/CJ-series CPU Unit with unit version 3.0 CP-series CPU Unit *1, NSJ Controller

CS/CJ-series CPU Unit with unit version 2.0

Pre-Ver. 20. CS/CJ-series CPU Units and CVM1/CVseries CPU Units

*1: Not possible with a CP1E CPU unit.

• When crossing up to 3 network levels, the CS/CJ-series CPU Units with unit version 2.0 and later, CP-series CPU Units, and NSJ Controllers can be combined with other models. When crossing 4 to 8 network levels, configure the system with only unit version 2.0 and later CS/CJ-series CPU Units, CP-series CPU Units, and NSJ Controllers. (Other models cannot be combined in the network with CS/CJ-series CPU Units with unit version 2.0 and later, CP-series CPU Units, and NSJ Controllers.) If earlier models are used, a routing error (end codes 0501 to 0504) will occur and the response may not be returned to the node that sent the command.

For details, refer to 1-4-2 Communications through a Maximum of 8 Network

Levels in the CS Series PLC Operation Manual or the CJ Series PLC Operation Manual.

(Gateway counter setting) It is possible to select a maximum of either 8 lev-

els or 3 levels. (Set with CX-Programmer Ver.

5.0.)

Setting fixed at 8 levels max.

Setting fixed at 3 levels max.

Types of FINS Commands There are basically two kinds of FINS commands: Those addressed to CPU

Units and those addressed to CPU Bus Units. Among FINS commands for CPU Units, there are commands addressed to the various models of CPU Unit, such as the CS/CJ/CP-series CPU Units, NSJ Controllers, CV-series CPU Units, C200HX/HG/HE CPU Units, and so on. The basic code system is the same, but the detailed specifications vary according to the CPU Unit.

Among FINS commands for CPU Bus Units, there are commands addressed to Controller Link Units, to DeviceNet Master Units, to Ethernet Units, and so on.

FINS Commands Addressed to CS/CJ/CPseries CPU Units and NSJ Controllers

PLC on another network CS/CJ-series PLC

CPU Unit

Computer

CS/CJ/CP-series CPU Units and NSJ Controllers can receive FINS commands from a PLC (CS/CJ, CVM1/CV, or C200HX/HG/HE(-Z) CPU Unit) or computer on another network or from a host computer connected directly to the local network.

Host compute

FINS command

CPU Unit

FINS command

Using FINS Commands Section 3-2

1,2,3... 1. A FINS command sent from a PLC or computer on another network is

transmitted to the CPU Unit from the Backplane of the CPU Rack, via a Communications Unit (Controller Link Unit, Ethernet Unit, etc.)

2. FINS commands sent from a host computer to a CPU Unit are sent with a Host Link header code and a terminator (as in the Host Link communications mode).

Host computer

Communications Unit

CS1-series CPU Unit

Serial communications (Host Link mode)

FINS command

Communications Unit

CPU Unit

PLC on network

Network (Controller Link, Ethernet, etc.)

Computer on network

Communications Board

The FINS commands available for CS/CJ/CP-series CPU Units and NSJ Controllers fall into the following broad categories. (Refer to the relative operation manuals for FINS commands addressed to other Units and Boards.)

• I/O memory area reading and writing

• Parameter area reading and writing

• Program area reading and writing

• Operating mode changes

• Machine configuration reading

• CPU Unit status reading

• Time data access

• Message reading and clearing

• Access rights acquisition and release

• Error log reading and clearing

• File operations

• Forced set/reset

Note When the Ethernet option board (CP1W-CF41) is used, a FINS command

issued from a PLC or computer on the network can be received via the Ethernet option board, but cannot be issued via the Ethernet option board.

3-2 Using FINS Commands

FINS commands addressed to CPU units are issued to CS/CJ/CP-series CPU units and NSJ Controllers by executing the instruction for the FINS command (SEND/RECV/CMND instruction) from a program of another PLC (CPU unit) on the network. Executing a FINS command addressed to a CPU unit can be used for the following:

• Issuing and using any command (CMND instruction)

• Using with respect to a host computer connected by Host Link

Using FINS Commands Section 3-2

3-2-1 Issuing and using any command (CMND (490) instruction)

The procedure for execution by CMND instruction is described below.

1,2,3... 1. Store the command format of the FINS command (i.e., the command data)

in an I/O memory area, such as the DM area.

2. In the same way, store the control data (number of bytes of transmission data, destination address, etc.) in an I/O memory area, such as the DM area.

3. Designate S (first command word), D (first response word), and C (first control word) for the CMND(490) operands, and execute the instruction.

4. When the FINS response is returned from the destination node (a CS/CJ/ CP-series CPU Unit or an NSJ Controller), the data will be stored according to the response format beginning at the first response word.

1 byte

CMND(490) execution

1 byte

Word

@CMND

Communications Unit (Controller Link Unit, etc.)

Command

Response

1 byte 1 byte

Word

CS/CJ-series CPU Unit

Command format data

Response format data

Command frame

FINS header

Automatically attached.

Response frame

FINS header

Automatically attached.

2 bytes

Command code

2 bytes 1,998 bytes max.2 bytes

Command code

End code

Control data

2,000 bytes max.

Tex t

Designates where to send, etc.

CS/CJ-series CPU Unit

Note FINS commands and responses are handled as binary data, and data is sent

and received in binary format. (Host Link communications, however, are basically in ASCII.)

3-2-2 Using with respect to a host computer connected by Host Link

With Host Link communications, a FINS command frame with a Host Link header and a terminator is sent from a host computer to a CS/CJ/CP-series CPU Unit or NSJ Controller. The basic frame formats are shown below.

Note Host Link communications handle ASCII data, so data is sent and received in

ASCII. For that reason, FINS command and response frames must also be sent and received in ASCII when they are handled using Host Link communications.

FINS Command and Response Frames Section 3-3

Command Frame

Host Link header FINS command frame (See note.)

Host Link

FCS

Note A FINS command frame also consists of the destination node address, the

source node address, and other FINS command format data.

The CS/CJ/CP-series CPU Unit or NSJ Controller that receives the command will return the following response frame to the host computer.

Response Frame

Host Link header

FINS response frame (See note.)

Host Link

FCS

Note A FINS response frame also consists of the contents set (e.g., requested) at

the time of transmission and the FINS command response format data.

It is also possible to send a FINS command frame with a Host Link header and terminator from a CS/CJ/CP-series (not possible from a CP1E CPU unit) CPU Unit or NSJ Controller to a host computer connected by Host Link System (unsolicited communications initiated by a slave).

3-3 FINS Command and Response Frames

If the data from the command code onwards is set in the words specified with S when a FINS command is sent by means of CMND(490), a FINS header will be generated automatically and attached, and the FINS command frame will be sent. When the FINS response frame is received, the FINS header will be automatically removed and the response data from the command code onwards will be stored as specified in the words specified with operand D.

When a FINS command is sent by Host Link communications, the header is attached before the FINS frame, and the FCS and terminator are attached after it.

Host Link terminator

3-3-1 FINS Command Frame Configuration

Command code

FINS header (automatically attached for CMND(490))

*With Host Link communications, the header, FCS, and terminator are attached before and after the frame.

*Set in word specified for CMND(490) operand S onwards.

3-3-2 FINS Response Frame Configuration

End code

Command code

FINS header (deleted automatically for CMND(490))

*With Host Link communications, the header, FCS, and terminator are added before and after the frame.

*Set in word specified for CMND(490) operand D onwards.

Te xt

FINS Command and Response Frames Section 3-3

3-3-3 Individual Items in Command/Response Frames

ICF

The ICF (Information Control Field) is configured as shown in the following diagram.

Bit

Always 0. (See note.)

Response (0: Required; 1: Not required) Data classification (0: Command; 1: Response) Bridges (0: Not used; 1: Used)

Always 1.

Note Set bits 01 to 05 to 0 when sending a FINS command. Do not access these

bits when receiving a FINS response.

RSV

RSV (Reserved) is always 00 hex. These bits are used by the system. Do not access them in the response.

GCT

When communicating across up to 8 network layers with CPU Unit with unit version 2.0 or later, set the GCT (Gateway Count: Number of Bridges Passed Through) to 07 hex when sending a FINS command. Otherwise, set the GCT to 02 hex (see note) when sending. When receiving a FINS response, GCT is decremented one for each bridge (network) that is passed through and the resulting value is received. This value is for system use; do not access it.

Note

For a CS/CJ-series CPU Unit with unit version 2.0 or later, CP-series CPU Unit, or NSJ Controller, CX-Programmer version 4.0 or higher can be used to set routing tables that start the GCT at 07 hex. For a CS/CJ-series CPU Unit with unit version 3.0 or later, CX-Programmer (CX-Net) Ver. 5.0 or higher can be used to set routing tables that start the GCT at either 07 Hex or 02 Hex. For details, refer to 1-4-2 Communications through a Maximum of 8 Network Levels in the CS Series PLC Operation Manual or the CJ Series PLC Operation Manual.

DNA

Destination network address. Specify within the following ranges (hex). 00: Local network 01 to 7F: Remote network address (decimal: 1 to 127)

DA1

Destination node address. Specify within the following ranges (hex). 00: Internal communications in PLC 01 to 20: Node address in Controller Link Network (1 to 32 decimal)

01 to FE: Ethernet (1 to 254 decimal,

for Ethernet Units with model numbers ending in ETN21)

FF: Broadcast transmission

DA2

Destination unit address. Specify within the following ranges (hex). 00: CPU Unit FE: Controller Link Unit or Ethernet Unit connected to network 10 to 1F: CPU Bus Unit E1: Inner Board

SNA

Source network address. Specify within the following ranges (hex). 00: Local network 01 to 7F: Remote network (1 to 127 decimal)

Settings for Sending FINS Commands Section 3-4

SA1

Source node address. Specify within the following ranges (hex). 00: Internal communications in PLC 01 to 20: Node address in Controller Link Network (1 to 32 decimal)

01 to FE: Ethernet (1 to 254 decimal,

for Ethernet Units with model numbers ending in ETN21)

SA2

Source unit address. Specify within the following ranges (hex). 00: CPU Unit 10 to 1F: CPU Bus Unit

SID

Service ID. Used to identify the process generating the transmission. Set the SID to any number between 00 and FF

Note 1. The unit address for a CPU Bus Unit is 10 (hexadecimal) plus the unit num-

ber set on the front panel of the CPU Bus Unit.

2. With a CS/CJ-series CPU Unit with unit version 2.0, CP-series CPU Unit, or NSJ Controller, the GCT (Gateway Count: Number of Bridges Passed Through) in FINS command/response frames is decremented from to 07 hex (variable). The GCT was previously decremented from 02 hex. For CS/ CJ-series CPU Unit with unit version 3.0 or later, the GCT (Gateway Count: Number of Bridges Passed Through) in FINS command/response frames is decremented from to 02 hex by default. If the user specified CX-Net for this CPU Unit version, the GCT will be decremented from 07 hex. With a CS/CJ-series CPU Unit with unit version 3.0 or later, NSJ Controller, or CPseries CPU Unit, the GCT will be decremented from 02 hex by default and from 07 hex if the user selects CX-Net.

3. The GCT (Gateway Count: Number of Bridges Passed Through) in the FINS header in FINS command/response frames should not be checked in the user applications, e.g., in the host computer. The GCT is for system use only and verification may fail if attempted from a user application. This is particularly important for CS/CJ-series CPU Unit with unit version 2.0 or later, CP-series CPU Unit, or NSJ Controller.

3-4 Settings for Sending FINS Commands

Command format

Settings for sending FINS commands

Address

Other

Note 1. Set these as operands when executing CMND(490).

2. Do not set the gateway count when using CMND(490).

Network address

Node address

Unit address

Response required/not required

Number of retries (See note 1.)

Communications port No. (See note 1.)

Response monitor time (See note 1.)

Gateway count (See note 2.)

Settings for Sending FINS Commands Section 3-4

3-4-1 FINS Command and Response Formats

Command Format As shown below, the command format basically consists of the command

code (four digits hexadecimal) and parameters (text).

Command code (See note.) 4 digits hexadecimal (2 bytes)

Text (Various kinds of data) The length depends on the command code.

Note The command code is a 2-byte code that expresses the content of the com-

mand. A FINS command must begin with a 2-byte command code. If there is also text, it is added after the command code.

Example: Command for Reading I/O Memory

01 01 Hex

Memory area code

Command code

Beginning read address

Te xt

Number of read elements

The following data would read 10 words starting from D00010.

01 01 Hex

Command code

Memory area code

First read address

Parameters

000A Hex00 0A 00 Hex82 Hex

Number of read elements

Response Format As shown below, the response format basically consists of the command code

(four digits hexadecimal), end code, and parameters (text).

Command code 4 digits hexadecimal (2 bytes)

Note The end code is a 2-byte code that shows the command execution result.

End code (See note.)

Text (Various kinds of data) The length depends on the command code.

(The first byte shows the general category, and the second byte shows the detailed results.)

Example: Response from Reading I/O Memory

01 01 Hex

Command code

End code

Read data

Te xt

Actual response data would be as follows:

01 01 Hex

00 00 Hex

Command code

Response code

Text: 10 words (20 bytes) of read data.

Settings for Sending FINS Commands Section 3-4

3-4-2 Addresses in FINS Commands

FINS commands are transmitted across networks and to various devices (via network nodes). Designate the addresses as follows:

• Designate the device from which the command is to be sent, the network that the device is on, and the node through which the command is to transit.

• Designate the device to which the command is to be sent, the network the device is on, and the node through which command is to transit.

Addresses must be provided for the network, node, and device (unit) to identify them. FINS commands include these addresses (the transmission source and destination addresses) in the command/response frames.

Addresses for FINS Commands

Address Values Designation method

Network address 1 to 127 (01 to 7F Hex)

Node address 1 to 254 (01 to FE Hex) (See note.)

Local node address: 00 Hex

Note The node addresses differ for each

network.

Internal Communications in PLC: 00 Hex For Controller Link: 01 to 3E Hex (1 to 62)

For Ethernet Units with model numbers ending in ETN21

: 01 to FE Hex (1 to 254)

For Ethernet Units with other model numbers

Unit address •CPU Unit: 00 Hex

•CPU Bus Unit: Unit No.+ 10 Hex

•Special I/O Unit: Unit No.+ 20 Hex

•Inner Board: E1 Hex

•Computer: 01 Hex

•Unit connected to network: FE Hex

: 01 to 7E Hex (1 to 126)

CMND(490) operand

designation

Ye s Ye s

Designation in frame

when frame is created

Devices on the Same Network

Example

Node address 1

Address Source address (See note 1.) Destination address

FINS command

symbol

Network address SNA 00 Hex DNA 00 Hex Node address SA1 01 Hex DA1 03 Hex Unit address SA2 00 Hex DA2 00 Hex

Example value FINS command

Node address 2

PLCPLC

symbol

Node address 3

PLC

For CPU Unit

(00 Hex)

(See note 2.)

Example value

Note 1. The transmission source address will be automatically incorporated into

the frame if the FINS command is sent with CMND(490). If sending the

Settings for Sending FINS Commands Section 3-4

FINS command by Host Link communications, then put the source address in the message.

2. Set the transmission destination address in the control code (C) operand if sending the FINS command with CMND(490). If sending the FINS command by Host Link communications, then put the destination address in the message.

Devices on Different Networks

Example

Node address 1

PLC

Network address 1

Address level Source address (See note 1.) Destination address

FINS command

symbol

Network address SNA 01 Hex DNA 02 Hex Node address SA1 01 Hex DA1 05 Hex Unit address SA2 00 Hex DA2 00 Hex

PLC

Example value FINS command

PLC

Network address 2

symbol

Node address 5

PLC

For CPU Unit

(00 Hex)

(See note 2.)

Example value

Note 1. The transmission source address will be automatically incorporated into

the frame if the FINS command is sent with CMND(490). If sending the FINS command by Host Link communications, then put the source address in the message.

Unit Addresses Set the unit address for the following purposes:

• To identify the Unit when there is more than one device connected at the same node on a network.

• To identify the type of device (CPU Unit, CPU Bus Unit, etc.) at the destination.

Note The meanings of FINS commands will vary depending on the Unit at the des-

tination even when the commands have the same command code. This is why the Unit at the destination must be identified by the unit address.

Unit addresses are as follows:

• CPU Unit: 00 Hex

• CPU Bus Unit: Unit number + 10 hex

• Special I/O Unit:

Unit number + 20 hex

• Inner Board: E1 Hex (CS Series only)

• Computer: 01 Hex

• Communications Unit with the specified node address connected to network with the specified network address (Controller Link or Ethernet):

FE Hex

Settings for Sending FINS Commands Section 3-4

Unit address 00 Hex Unit No. + 10 Hex E1 Hex 01 Hex

Contents

Node address

Note It is also possible to set the serial port (No. 1 to 4) for the destination device.

Node address

Unit Addresses for Computers Connected to Serial Ports

Serial Communications Unit

Serial port 1 Serial port 2

Serial Communications Board

Serial port 1

Serial port 2

CPU Unit

The unit addresses for host computers connected to a CS/CJ/CP/NSJ serial port (e.g., on a CPU Unit, Option Board, Serial Communications Unit, or

Serial Communications Board) are shown in the following table.

Unit/Board Peripheral port RS-232C port

CS/CJ-series CPU Unit FD Hex (253 decimal) FC Hex (252 decimal) NSJ Controller --- FC Hex (Serial port C on

Controller Section)

Built-in serial ports of N-type CP1E CPU Units

Unit/Board Serial port 1 Serial port 2

CS/CJ -series Serial Communications Board

CS/CJ-series Serial Communications Unit

CP-series Option Board (See Note.)

Note

A FINS command to a host computer cannot be issued from a CP1E CPU unit.

--- ---(See note.)

E4 Hex E5 Hex

80 Hex + 04 Hex x unit number

FD Hex FC Hex

81 Hex + 04 Hex x unit number

Serial port 1 Serial port 2

Unit Addresses for Serial Ports on Serial Communications Boards and Units

For the SEND, RECV, and CMND instructions, the CPU Unit will add the proper unit address based on the unit address of the Unit/Board and the specified serial port. It is not necessary to consider these addresses in the ladder-diagram program.

The network address and serial port's unit address must be allocated and the routing table's local network table must be created for Several settings are required when making network settings (FINS command system settings) for serial communications through a serial port on a CS Series Serial Communications Board or CS/CJ Series Serial Communications Unit. The network address and the serial port's unit address (permanent) must be allocated and the routing table's local network table must be created. The following diagrams show serial port's unit address.

• Example 1: Serial Communications Board

Serial Communications Board

Serial port 1

Serial port 2

Serial port on Board Serial port's unit address

Serial port 1 E4 hex (228 decimal) Serial port 2 E5 hex (229 decimal)

Settings for Sending FINS Commands Section 3-4

• Example 2: Serial Communications Unit

Serial Communications Unit

Serial port 1

Serial port

Serial port on Unit Serial port's unit address Example: Unit number 1

Serial port 1 80 hex + 04 hex × unit num-

ber

Serial port 2 81 hex + 04 hex × unit num-

ber

Unit addresses for serial port 1:

Unit number Hexadecimal Decimal

0 1 2 3 4 5 6 7 8 9 A B C D E F

80 84 8C 90 94 98 9C A0 A4 A8 AC B0 B4 B8 BC

128 132 136 140 144 148 152 156 164 168 172 176 180 184 188

160

Unit addresses for serial port 2:

Unit number Hexadecimal Decimal

0 1 2 3 4 5 6 7 8 9 A B C D E F

8D 91

95 99

129 133 137 141 145 149 153

9D A1 A5 A9 AD B1 B5 B9 BD 157 161

165 173 177 181 185 189

Summary of Addresses The three addresses used in FINS commands can be summarized as follows

(refer to the following diagram):

Network Address

An address that identifies the entire network. All nodes on the same network have the same network address.

Node Address

An address that identifies an individual node on a network, such as a PLC or host computer.

80 hex + 04 hex × 1 = 84 hex (132 decimal)

81 hex + 04 hex × 1 = 85 hex (132 decimal)

169

Settings for Sending FINS Commands Section 3-4

Unit Address

For a PLC, an address that identifies the specific Unit that is participating in the communication in the PLC. For a host computer, an address that identifies the specific application that is participating in the communication in the computer.

PLC Node address: 5

Computer Node address: 1

PLC Node address: 8

Computer Node address: 11

Controller Link Unit Unit address: 12 Hex

Communications Unit (Controller Link Unit) Unit address: 12 Hex

Node address: 8

PLC

Node address: 7

Ethernet Unit Unit address: 15 Hex

Controller Link Network Network address 2

PLC Node address: 3

CPU Unit Unit address:

0 Hex

Serial communications (Host Link)

Unit address of serial port 2 of the Serial Communications Unit: 81 Hex + 04 Hex × unit number

Ethernet network Network address 1

PLC Node address: 2

PLC Node address: 5

Serial Communications Unit

PLC Node address: (Host Link unit number (0 to 31) + 1

RS-232C port on CPU Unit

Settings for Sending FINS Commands Section 3-4

3-4-3 Other FINS Command Settings

Aside from the addresses, the following data must be set.

Setting Content Values Designation method

Number of retries Number of times to retry sending

the command.

Port No. Logical communications port. CS/

CJ/CP-series CPU Units have 8 communications ports, so 8 communications commands can be executed simultaneously. To execute 9 or more commands, simultaneously, it is necessary to set up exclusive control.

Serial port No. Specifies the number of the serial

Response monitor time

Response required/ not required (ICF bit 0)

Gateway count Designates the number of net-

port of the Unit with Host Link capabilities.

Monitors the time it takes to return a response. If a response is not returned within the designated time, a response timeout is generated.

Designates whether or not a response is required.

works that can be accessed.

CMND(490)

operand

designation

0 to F Hex (0 to 15 times) Yes No

0 to 7 Hex Yes No

0: Unit/Board 1: Serial port 1 for Serial

Communications Board/ Unit or Peripheral port for CPU Unit

2: Serial port 2 for Serial

Communications Board/ Unit or RS-232C port for CPU Unit

0001 to FFFF Hex (0.1 to 6,553.5 seconds)

0 or 1 (bit) Yes Yes

00 to 07 Hex No Yes

Ye s N o

Designation in

frame when

frame is created

Note 1. Unit address are fixed for Units and Boards, as well as for serial ports. For

the SEND(090), RECV(098), and CMND(490) instructions, the CPU Unit will add the proper unit address based on the unit address of the Unit/ Board and the specified serial port. It is not necessary to consider these addresses in the ladder-diagram program. Serial Port 1:

80 Hex + 04 Hex x unit number for Serial Communications Units, E4 Hex for

Serial Communications Boards, and FC Hex (CPU Unit’s RS-232C or serial port 2 on CP1H Option Board) Serial Port 2:

81 Hex + 04 Hex x unit number for Serial Communications Units, E5 Hex for

Serial Communications Boards, and FD Hex (CPU Units peripheral port or serial port 1 on CP1H Option Board)

2. The gateway count is decremented one for each bridge (network) that is passed through.

Settings for Sending FINS Commands Section 3-4

3-4-4 CMND(490) Setting Example

The designated number of bytes of FINS command data from the first command word designated by operand S is sent to the designated unit address via the node address on the network address designated by operand C, and the response is stored for the number of bytes of data received starting from D.

S: First command word

D: First response word

C: First control word

In this example, a command (MEMORY AREA READ: 0101 Hex) for reading D00010 to D00019 of the PLC at node 02 is sent using CMND(490).

D00010: Memory area code (82 Hex), address 000A00 Number of elements read: 10 = 0A Hex

S: First command word

0101

Command code

0082

Memory area code

0A 00

Beginning read address

0A00

Number of elements read

D: First response word

0101

Control code

Beginning read address

C: First control word

0800

Number of command data bytes

1800

Number of response data bytes

0000

Destination network address

Serial port No.

0002

Destination unit address

Destination node address

0300

Number of retries

Communications port number

Response required/not required

0000

End code

Read data

Response monitor time

FINS Commands with Host Link Protocol Section 3-5

3-5 FINS Commands with Host Link Protocol

FINS commands can be sent and received using the Host Link protocol between interconnected host computers and PLCs.

3-5-1 Connection Configurations

One of the following two methods can be used to send and receive FINS commands using the Host Link protocol.

Sending from a Computer to a CPU Unit

Note The host computer can be connected to the peripheral port or RS-232C port

on the CPU Unit or to a serial ports on a Serial Communications Unit/Board. The Host Link protocol must be used regardless of the point of connection.

CPU Unit Directly Connected to Host Computer

CPU Uni

Host Link

FINS command

CPU Units on a Network

Host Link

FINS command

Network (Controller Link, Ethernet, etc.)

Sending from a CPU Unit to a Computer (Slave Initiation)

Note 1. Slave initiation is not possible from a CP1E CPU.

2. The host computer can be connected to the peripheral port or RS-232C port on the CPU Unit or to a serial ports on a Serial Communications Unit/ Board. The Host Link protocol must be used regardless of the point of connection.

CPU Unit Directly Connected to Host Computer

CPU Unit CPU Unit

SEND(090) RECV(098)

CMND(490)

CPU Unit

Host Link

FINS command

FINS Commands with Host Link Protocol Section 3-5

CPU Unit Directly Connected to Host Computer on a Network

SEND(090) RECV(098)

CMND(490)

CPU Unit

Host Link

FINS command

Network (Controller Link, Ethernet, etc.)

Note 1. Host Link communications handle ASCII data, so data is sent and received

in ASCII. Hexadecimal values in FINS command and response frames must, therefore, also be sent and received in ASCII when they are handled using Host Link communications.

2. When a FINS command sent from a host computer or the CPU Unit (with the CMND instruction) is received by a Serial Communications Board or Unit with version number Ver. 1.2 or later, that PLC acts as the Host Link Master and it can send the FINS command to a Slave PLC through the Host Link system.

3. When the Ethernet option board (CP1W-CF41) is used, a FINS command cannot be issued to Host Link via the Ethernet option board.

CPU Unit

Serial Communications Unit Ver. 1.2 or later

Serial

Gateway

PLC (Host link Master)

FINS

Host link header

CMND

Host link terminator

Sends FINS command

FINS

Host link header

PLC (Host link Slave)

Host link terminator

3-5-2 Overview of Command and Response Frames

When FINS commands and responses are sent or received using Host Link communications, the frame must be preceded by a Host Link header and followed by a Host Link FCS and terminator as shown below.

Command Frame Use the following format to send FINS command frames.

Host Link header FINS command frame (See note.)

Host Link

FCS

Host Link terminator

Note A FINS command frame also consists of the response wait time, the destina-

tion node address, the source node address, and other FINS command format data.

FINS Commands with Host Link Protocol Section 3-5

Response Frame The CS/CJ/CP-series CPU Unit or NSJ Controller that receives the command

will return the following response frame to the host computer.

Host Link header

FINS response frame (See note.)

Host Link

FCS

Host Link terminator

Note A FINS response frame also consists of the contents set at the time of trans-

mission and the FINS command response format data.

3-5-3 Sending Commands from the Computer to the CPU Unit

Command Format from Host Computer

Use the following command format to send FINS commands from the host computer to the CPU Unit.

Note The length of the command must be not more than 1,114 characters. FINS

commands cannot be partitioned into separate frames for sending.

Sending Commands to a CPU Unit Directly Connected to the Host Computer

Note The following format is also applicable for a host computer connected to a

Serial Communications Board or a Serial Communications Unit.

xx xx

Unit No.

Header code

Response wait time

ICF DA2 SA2 SID

FINS command code

Sending Commands to a CPU Unit on a Network

Note The following format can also be used to send FINS commands to a CPU Unit

connected to the host computer.

xx x

Unit No.

xx xxxxxx

DA2 SNA SA1 SA2 SID

FCS

Header code

Terminator

Response wait time

ICF RSV GCT DNA DA1

Host Link Settings @

The @ symbol must be attached to the beginning of the command.

Unit Number

The unit number set is that of the destination CPU Unit connected to the host

Text (1,080 characters = 540 bytes max.)

xxxx

FINS command code Text

(1,080 characters = 540 bytes max.)

xxxxxx

FCS

Terminator

FINS Commands with Host Link Protocol Section 3-5

computer. When the host computer is connected to a CPU Unit, the unit number is designated in the PLC Setup.

When the host computer is connected to a Serial Communications Board or a Serial Communications Unit, the unit number is the designated in the Setup for the Board or Unit.

Header Code

The header code distinguishes between different types of commands. Set “FA” (ASCII: 46, 41) when using FINS commands.

Response Wait Time

The response wait time sets the time from when the CPU Unit receives a command block until it starts to return a response. It can be set from 0 to F in hexadecimal, in units of 10 ms.

Example:

If F(15) is set, the response will begin to be returned 150 ms (15 × 10 ms) after the command block was received.

ICF (Information Control Field)

Specifies whether or not there are network relays. Set “80” (ASCII: 38,30) when sending an FINS command to a CPU Unit on a network. Set “00” (ASCII: 30,30) when sending to a CPU Unit connected directly to the host computer.

RSV (Reserved)

Set “00” (ASCII: 30,30). Setting RSV is required only when sending to a CPU Unit on a network.

GCT (Gateway Count)

This is the number of networks through which the transmission can be relayed. Set “07” (ASCII: 30, 37). Setting GCT is required only when sending to a CPU Unit on a network.

DNA, DA1, DA2

Set the destination network, node, and unit addresses.

DNA (Destination Network Address)

Set between 00 and 7F Hex (0 and 127 decimal). Setting DNA is required only when sending to a CPU Unit on a network.

DA1 (Destination Node Address)

Set within the following ranges. Setting DA1 is required only when sending to a CPU Unit on a network.

Ethernet Units with model numbers ending in ETN21:

01 to FE hex (1 to 254)

Ethernet Units with other model numbers:

01 to 7E hex (1 to 126) Controller Link Unit: 01 to 20 hex (1 to 32 decimal) SYSMAC NET: 01 to 7E hex (1 to 126 decimal) SYSMAC LINK: 01 to 3E hex (1 to 62 decimal)

DA2 (Destination Unit Address)

Refer to 3-4-2 Addresses in FINS Commands for details on unit addresses. In Host Link mode, it is assumed that the destination unit is the CPU Unit,

so set “00” (ASCII: 30, 30).

SNA (Source Network Address), SA1 (Source Node Address)

Set the source network and node addresses. Set both to “00” (ASCII: 30, 30) regardless of whether or not there is a network relay.

FINS Commands with Host Link Protocol Section 3-5

Setting SNA and SN1 is required only when sending to a CPU Unit on a network.

SA2 (Source Unit Address)

Set the unit address of the Unit physically connected to the host computer. The setting changes depending on the connected Unit.

When connected to the CPU Unit, Serial Communications Board, or a Serial Communications Unit, set “00” to indicate the CPU Unit (ASCII: 30, 30).

SID (Source ID)

The SID is used as a counter when resending. It should normally be set to “00” (ASCII: 30, 30).

Command Code, Text

Set the command code and text according to the FINS command and response formats.

FCS (Frame Check Sequence)

Set a 2-character FCS. Refer to FCS Calculations under 2-2 Command/ Response Formats for the FCS calculation method.

Terminator

The terminator is a required delimiter at the end of a command. Set the terminator to *CR (ASCII: 2A, 0D).

Response Format from a CPU Unit

The following response format is used to return responses from the CPU Unit to the host computer.

Note The length of the response must be not more than 1,115 characters. Of this,

the response data without the response code is 1,076 characters (538 bytes).

Responses from a CPU Unit Directly Connected to the Host Computer

xx xx

Unit No.

xxxxxxxx xx

FINS command code Data

Header code

FINS response code

ICF DA2 SA2 SID

Responses from a CPU Unit on a Network

Unit No.

Header code

xxxxxxxxxxxxxxxx

ICF RSV GCT DNA DA1

(1,076 characters = 538 bytes)

FCS

Terminator

DA2 SNA SA1 SA2 SID

Data (1,076 characters = 538 b

tes)

FCS

Terminator

FINS command code

FINS response code

FINS Commands with Host Link Protocol Section 3-5

Host Link Settings @

The @ symbol must be attached to the beginning of the response.

Unit Number and Header Code

The same unit number and header code specified in the FINS command that was received will be returned.

ICF (Information Control Field)

For a CPU Unit on a network, “C0” (ASCII: 43, 30) will be returned. For a CPU Unit connected directly to the host computer, “40” (ASCII: 34,30) will be returned.

RSV (Reserved)

This section is reserved for the system. Do not access the RSV.

GCT (Gateway Count)

This section is reserved for the system. Do not access the GCT. The same GCT that was specified in the command that was received will be returned. Setting GCT is required in the response format only from a CPU Unit on a network.

DNA (Destination Network Address), DA1 (Destination Node Address), DA2 (Destination Unit Address)

The same contents specified for SNA, SA1, and SA2 in the command that was received will be returned.

Setting DNA and DA1 is required for response formats only from a CPU Unit on a network.

SNA (Source Network Address), SA1 (Source Node Address), SA2 (Source Unit Address)

The same contents specified for DNA, DA1, and DA2 in the command that was received will be returned.

Setting SNA and SN1 is required for response formats only from a CPU Unit on a network.

SID (Source ID)

The SID that was specified in the command that was received will be returned.

Command Code, Response Code, Text

The command code, response code, and text corresponding to the FINS command and response formats will be returned.

FCS (Frame Check Sequence)

A 2-character FCS will be returned. Refer to FCS Calculations under 2-2 Command/Response Formats for the FCS calculation method.

Terminator

The terminator is a required delimiter at the end of a command. The terminator *CR (ASCII: 2A, 0D) will be returned.

Example: FINS Command Settings for Sending to CPU Unit on a Network

With Host Link communications, FINS command transmissions and receptions are handled in ASCII, so hexadecimal values in FINS command frames must be sent as ASCII. For example, the hexadecimal value “0” would be “30 Hex” in ASCII, and the hexadecimal value “A” would be “41 Hex” in ASCII.

The destination network address, node address, and unit number address are explained using the following network as an example.

FINS Commands with Host Link Protocol Section 3-5

Host computer

Host Link

Controller Link, network address 5

Ethernet network, network address 10

Controller Link

Ethernet Unit Node 10

Unit Node 3

Ethernet Unit Node 12

PLC (B)PLC (A)

Sending a Command from a Host Computer to PLC (A)

The following addresses are specified to the CPU Unit at network address 5, node address 3:

Destination network address (DNA): 05 (30, 35) Destination node address (DA1): 03 (30, 33) Destination unit address (DA2): 00 (30, 30) (Command addressed to CPU Unit)

Sending a Command from a Host Computer to PLC (B)

The following addresses are specified to the CPU Unit at network address 10, node address 12:

Destination network address (DNA): 0A (30, 41) Destination node address (DA1): 0C (30, 43) Destination unit address (DA2): 00 (30, 30) (Command addressed to CPU Unit)

3-5-4 Sending FINS Commands to the Host Computer from the CPU

Unit

With normal Host Link communications, FINS commands are sent from the host computer to the CPU Unit. Commands can also be sent, however, from the CPU Unit to the host computer. Any FINS command can be sent to the host computer using SEND(090), which sends CPU Unit data to the host computer, RECV(098), which receives data from the host computer, or CMND(490).

Slave-initiated communications allows the host computer to be notified (unsolicited communications) when an error is generated, for example, on a production line controlled by a CPU Unit. Since the host computer no longer needs to regularly communicate with the CPU Unit, the load on the host computer is reduced.

When an Ethernet Unit or Controller Link Unit are mounted to the Backplane of the CPU Unit, commands can be sent to the host computer from a CPU Unit on a network on another level (up to three network levels).

Note In principle, send commands to the host computer only when one host com-

puter is connected to one CPU Unit. If more than one CPU Unit is connected to the host computer, the commands may collide with each other and prevent normal communications. Create a program that will exclusively control commands that are being sent to a host computer to which multiple CPU Units are connected.

Considerations when Sending Commands from a CPU Unit

Consider the following items when using instructions (SEND(090), RECV(098), and CMND (490)) to send commands from the CPU Unit.

FINS Commands with Host Link Protocol Section 3-5

1,2,3... 1. SEND(090), RECV(098), and CMND (490) executed by the CPU Unit are

converted to the same format for FINS commands that are sent to CPU Units on networks.

2. A program must be created to process the commands received by the host computer.

3. When instructions (SEND(090), RECV(098), and CMND (490)) are executed in a CPU Unit, some of the control data settings will be different. Refer to the relevant instruction specifications.

3-5-5 Sending Commands from the CPU Unit

When controls are being implemented by sending commands from the local CPU Unit or another CPU Unit on a network to a host computer, three instructions can be used in the user program: SEND(090), RECV(098), and CMND(490).

Send(090) Memory area data can be sent from the CPU Unit to the host computer by

using SEND(090).

Command Format Received by the Host Computer

The FINS command transmitted to the host computer when SEND(090) is executed is MEMORY AREA WRITE (command code 0102). The command format received by the host computer is as shown in the following diagram. Refer to MEMORY AREA WRITE: 0102 in Section 5 FINS Commands for details.

xx x x xxxxx

Unit No. Header

DA2 SNA SA1 SA2 SID Command code Memory area

Beginning write address

code

Response wait time

ICF RSV GCT

Number of write elements

DNA DA1

xxxxxxxxxx xx

Write data (1,068 characters max.)

FCS Terminator

xxxxxxxxxxxx

code

Control Words

Control data must be set before SEND(090) is executed. The control data is written in the following format, starting from the first control word.

Word Bits 00 to 07 Bits 08 to 15

C Number of send words C+1 Destination network address Bits 08 to 10: Serial port number C+2 Destination unit address Destination node address C+3 Bits 00 to 03: No. of retries Bits 08 to 10: Comm. port number

C+4 Response monitor time (unit: 0.1 s)

Bit 15: Response setting

Number of Send Words

Set the total number of words of data to be transferred to the host computer.

FINS Commands with Host Link Protocol Section 3-5

Serial Port Number

Set the serial port number to which the host computer is connected.

Destination Network Address

Set the network address of the destination node. Set “00” to send communications within the local network.

Destination Node Address

Set the node address of the destination node. Set “00” when transmitting within the local PLC.

Destination Unit Address

Set the unit address of the Unit to which the host computer is connected.

Response Setting

Normally this bit is set to 0 to require a response. When a response is not required, set this bit to 1.

Communications Port Number

Set the port number in the CPU Unit which will transmit SEND(090).

Number of Retries

Set the maximum number of times SEND(090) is to be resent if no response is returned.

Response Monitor Time

If the Response Setting is set to require a response, set the response monitor time.

Control Word Settings

The setting range for each item is shown on the following table.

Item Setting

Number of send words 0001 to 010B (1 to 267 words) Serial port number 00: Do not set.

01: Port 1 02: Port 2

Destination network address

Destination node address 00: Internal communications in PLC

Destination unit address 00: CPU Unit

Response setting 0: Required

Communications port number

Number of retries 0 to F (0 to 15) Response monitor time

00: Local network

01 to 7F:

01 to FE: Node address of Ethernet Unit with model

01 to 7E: Node address of Ethernet Unit with other

01 to 20: Node address (1 to 32) for Controller Link

10 to 1F: Serial Communications Unit (unit address 0 to

E1: Inner Board (Serial Communications Board)

1: Not required 0 to 7 (0 to 7)

0000: Default

0001 to FFFF: 0.1 to 6,553.5 s (unit 0.1 s)

Network address (1 to 127)

number ending in ETN21 (1 to 254)

model number (1 to 126)

15)

FINS Commands with Host Link Protocol Section 3-5

Note To execute SEND(090) normally, programming needs to be written to process

the data received by the host computer and return the proper response.

RECV(098) By using RECV(098), data from the host computer can be written to a mem-

ory area in the CPU Unit.

Command Format Received by the Host Computer

The FINS command transmitted to the host computer when RECV(098) is executed is MEMORY AREA READ (command code 0101). The command format received by the host computer is shown in the following diagram.

Refer to MEMORY AREA READ: 0101 in Section 5 FINS Commands for details

xx xxxxxxx

Unit No. Header

xxxxxxxxxx xx

DA2 SNA SA1 SA2 SID Command code

xxxxxxxxxxxx

Beginning read address

code

Response wait time

ICF RSV GCT DNA DA1

Number of read elements

FCS Terminator

Memory area code

Control Words

Control data must be set before RECV(098) is executed. The control data is written in the following format, starting from the first control word.

Word Bits 00 to 07 Bits 08 to 15

C Number of read words C+1 Destination network address Bits 08 to 10: Serial port number C+2 Destination unit address Destination node address C+3 Bits 00 to 03: No. of retries Bits 08 to 10: Comm. port number C+4 Response monitor time (unit: 0.1 s)

Number of Read Words

Set the total number of words of data to be read from the host computer.

Serial Port Number

Set the serial port number to which the host computer is connected.

Destination Network Address

Set the network address of the destination node (i.e., the computer). Set “00” to send communications within the local network.

Destination Node Address

Set the node address of the destination node (i.e., the computer). Set “00” when transmitting within the local PLC.

Destination Unit Address

Set the unit address of the Unit to which the host computer is connected.

Communications Port Number

Set the port number in the CPU Unit which will transmit RECV(098).

FINS Commands with Host Link Protocol Section 3-5

Number of Retries

Set the maximum number of times RECV(098) is to be resent if no response is returned.

Response Monitor Time

Set the time to wait for a response

Control Word Settings

The setting range for each item is shown on the following table.

Item Setting

Number of read words 0001 to 010D (1 to 269 words) Serial port number 00: CPU Unit, Inner Board, CPU Bus Unit

01: Port 1 02: Port 2

Destination network address

Destination node address 00: Internal communications in PLC

Destination unit address 00: CPU Unit

Response required/not required

Communications port number

Number of retries 0 to F (0 to 15) Response monitor time 0000: Default

00: Local network 01 to 7F:Network address (1 to 127)

01 to FE: Node address of Ethernet Unit with model

number ending in ETN21 (1 to 254)

01 to 7E: Node address of Ethernet Unit with other

model number (1 to 126)

01 to 3E: Node address (1 to 62) for Controller Link

10 to 1F: Serial Communications Unit (unit address 0 to

15) E1: Inner Board (Serial Communications Board) 0: Response required 1: Response not required 0 to 7 (0 to 7)

0001 to FFFF: 0.1 to 6,553.5 s (unit 0.1 s)

Note To execute RECV(098) normally, programming needs to be written to process

the command received by the host computer and return the proper data.

CMND(490) By using CMND(490), controls can be implemented by sending FINS com-

mands to the host computer.

Command Format Received by the Host Computer

CMND(490) can be used to send any FINS command to the host computer The command format received by the host computer is shown in the following diagram.

FINS Commands with Host Link Protocol Section 3-5

xx xxxxx

Unit No. Header

code

xxxxxxxxxxxxxx

DA2 SNA SA1 SA2 SID Command code Data (1,080

FCS Terminator

Response wait time

ICF RSV GCT DNA DA1

characters max.)

Control Words

Control data must be set before CMND(490) is executed. The control data is written in the following format, starting from the first control word.

Word Bits 00 to 07 Bits 08 to 15

C Number of bytes of command data C+1 Number of bytes of response data C+2 Destination network address Bits 08 to 10: Serial port number C+3 Destination unit address Destination node address C+4 Bits 00 to 03: No. of retries Bits 08 to 10: Comm. port number

Bits 15: Response setting

C+5 Response monitor time

Number of Bytes of Command Data

Set the number of bytes of command data (including the command code) that are stored from the first command word

Number of Bytes of Response Data

Set the number of bytes of response data (including command code and end code) that are stored from the first response word.

Serial Port Number

Set the serial port number to which the host computer is connected.

Destination Network Address

Set the network address of the destination node (i.e., the computer). Set “00” to send communications within the local network.

Destination Node Address

Set the node address of the destination node (i.e., the computer). Set “00” when transmitting within the local PLC.

Destination Unit Address

Set the unit address of the Unit to which the host computer is connected.

Response Setting

Normally this bit is set to 0 to require a response. When a response is not required, set this bit to 1.

Communications Port Number

Set the port number in the CPU Unit which will transmit CMND(490).

FINS Commands with Host Link Protocol Section 3-5

Number of Retries

Set the maximum number of times CMND(490) is to be resent if no response is returned.

Response Monitor Time

If the Response Setting is set to require a response, set the response monitor time.

Note If response data longer than that set in the Number of Bytes of Response

Data is returned, all extra response data will not be stored. If response data shorter than that set in the Number of Bytes of Response Data is returned, the response data will be stored, and the remaining area will stay at its previous values.

Control Word Settings

The setting range for each item is shown on the following table.

Item Setting

Number of bytes of command data

Number of bytes of response data

Serial port number 00: CPU Unit, Inner Board, CPU Bus Unit

Destination network address

Destination node address 00: Internal communications in PLC

Destination unit address 10 to 1F: Serial Communications Unit (unit address 0 to

Response setting 0: Required

Communications port number

Number of retries 0 to F (0 to 15) Response monitor time

0002 to 021E (2 to 542 bytes)

01: Port 1 02: Port 2

00: Local network

01 to 7F:Network address (1 to 127)

01 to FE: Node address of Ethernet Unit with model

number ending in ETN21 (1 to 254)

01 to 7E: Node address of Ethernet Unit with other

model number (1 to 126)

01 to 3E: Node address (1 to 62) for Controller Link

15)

1: Not required 0 to 7 (0 to 7)

0000: Default (2 s)

0001 to FFFF: 0.1 to 6,553.5 s (unit: 0.1 s)

Note To execute CMND(490) normally, programming needs to be written to process

the command received by the host computer and return the proper response.

3-5-6 Command Format Received by the Host Computer

FINS commands sent to the host computer are received at the host computer in the format shown below.

FINS Commands with Host Link Protocol Section 3-5

xx xxxxx

Unit No. Header

code

xxxxxxxxxxxxxx

DA2 SNA SA1 SA2 SID Command code Text (1,080

FCS Terminator

Response wait time

ICF RSV GCT DNA DA1

characters max.)

Unit Number

The unit number of the Host Link port connected to the host computer is set.

Header Code

The header code in FINS commands sent to the host computer is always set to “OF” (ASCII: 4F, 46).

Response Wait Time

The response wait time in FINS commands sent to the host computer is fixed at to “0” (ASCII: 4F, 46).

ICF (Information Control Field)

Specifies whether or not a response is required. Response required: “80” (ASCII: 38,30)

Response not required: “81” (ASCII: 38,31)

RSV (Reserved)

Always set to “00” (ASCII: 30,30) in commands sent to the host computer.

GCT (Gateway Count)

The number of networks through which the command is relayed subtracted from 2 is set. (See note.)

Number of networks = 0: “02” (ASCII: 30, 32) Number of networks = 1: “01” (ASCII: 30, 31) Number of networks = 2: “00” (ASCII: 30, 30) Number of networks = 7: “07” (ASCII: 30, 37)

Note The number of networks is subtracted from 7 for a CS/CJ-series CPU Unit

with unit version 2.0 or later, CP-series CPU Unit, or NSJ Controller.

DNA, DA1, DA2

The addresses for the Host LInk Unit connected to the host computer are set.

DNA (Destination Network Address)

The network address (00 to 7F Hex) of the CPU Unit is set in hexadecimal.

DA1 (Destination Node Address)

The node address (01 to 7E Hex) of the CPU Unit is set in hexadecimal.

DA2 (Destination Unit Address)

The unit address of the Host Link port is set.

SNA, SA1, SA2

The addresses for the source node (e.g., PLC, FA computer) are set.

SNA (Source Network Address)

The network address (00 to 7F Hex) of the source is set in hexadecimal.

FINS Commands with Host Link Protocol Section 3-5

SA1 (Source Node Address)

The node address (01 to 7E Hex) of the source is set in hexadecimal.

SA2 (Source Unit Address)

The unit address of the source is set.

SID (Source ID)

Automatically set by the CPU Unit using SEND(090), RECV(098), and CMND(490).

3-5-7 Response Format Returned by the Host Computer

Responses to FINS commands received by the host computer are returned in the format shown below.

Unit No.

DA2 SNA SA1 SA2 SID

Data (1,076 characters)

Header code

xx x

FCS

ICF RSV GCT DNA DA1

Terminator

ICF (Information Control Field)

“C0” (ASCII: 43, 30) will be returned.

RSV (Reserved)

“00” (ASCII: 30, 30) is returned.

GCT (Gateway Count)

“07” (ASCII: 30, 37) is returned.

DNA (Destination Network Address), DA1 (Destination Node Address), DA2 (Destination Unit Address)

The same contents specified for SNA, SA1, and SA2 in the command that was received will be returned.

SNA (Source Network Address), SA1 (Source Node Address), SA2 (Source Unit Address)

The same contents specified for DNA, DA1, and DA2 in the command that was received will be returned.

SID (Source ID)

The SID that was specified in the command that was received will be returned.

Command Code

The command code that was specified in the command that was received will be returned.

xxxx

xxxxxxxx

FINS command code

FINS response code

Note The length of the response cannot exceed 1,115 characters. Create

responses so that the response data without the response code is less than 1,076 characters (538 bytes).

FINS Commands with Host Link Protocol Section 3-5

3-5-8 Flags for Network Communications

This section describes the flags in the Auxiliary Area that are used when executing SEND(090), RECV(098), and CMND(490).

Communications Port Enabled Flags

Communications Port Error Flags

A Communications Port Enabled Flag turns ON when SEND(090), RECV(098), and CMND(490) can be executed. The Flag will turn OFF during execution of these commands and turn ON again when the command execution is completed. When creating the ladder diagram, use these Flags as input

conditions when executing these instructions.

Word Bit Co ntent

A202 08 to 15 Reserved

07 Communications Port Enabled Flag, Port No. 7 06 Communications Port Enabled Flag, Port No. 6 05 Communications Port Enabled Flag, Port No. 5 04 Communications Port Enabled Flag, Port No. 4 03 Communications Port Enabled Flag, Port No. 3 02 Communications Port Enabled Flag, Port No. 2 01 Communications Port Enabled Flag, Port No. 1 00 Communications Port Enabled Flag, Port No. 0

A Communications Port Error Flag will turn ON in the following cases.

• When an error is generated during execution of SEND(090), RECV(098), or CMND(490).

• When an error response or retry error has been generated for the port.

These Flags will turn OFF when the corresponding Communications Port Enabled Flag is turned OFF at the start of operation or at the start of execut-

ing the SEND(090), RECV(098), or CMND(490).

Word Bit Co ntent

A219 15 to 08 Reserved

07 Communications Port Error Flag, Port No. 7 06 Communications Port Error Flag, Port No. 6 05 Communications Port Error Flag, Port No. 5 04 Communications Port Error Flag, Port No. 4 03 Communications Port Error Flag, Port No. 3 02 Communications Port Error Flag, Port No. 2 01 Communications Port Error Flag, Port No. 1 00 Communications Port Error Flag, Port No. 0

FINS Commands with Host Link Protocol Section 3-5

Communications Port Completion Codes

Flag Transitions

Communications Port Enabled Flag

Network communications instructions (SEND(090)/RECV(098)/CMND(490))

Communications Port Error Flag

Communications end code

The Communication Port Completion Code words will contain the FINS end code after SEND(090), RECV(098), or CMND(490) has been executed.

If the Communications Port Enabled Flag turns OFF when operation is started or SEND(090), RECV(098), or CMND(490) are executed, the contents of

these words will be cleared.

Word Co ntent

A203 Communications Port Completion Code, Port No. 0 A204 Communications Port Completion Code, Port No. 1 A205 Communications Port Completion Code, Port No. 2 A206 Communications Port Completion Code, Port No. 3 A207 Communications Port Completion Code, Port No. 4 A208 Communications Port Completion Code, Port No. 5 A209 Communications Port Completion Code, Port No. 6 A210 Communications Port Completion Code, Port No. 7 A211 to A218 Reserved

Command 1 being executed

Command 2 being executed

Command 3 being executed

Normal end

End of previous processing

Normal end

(No unit corresponding to unit address)

3-5-9 Timing of Commands to Host Computers

Commands sent to a host computer are transmitted with the timing shown below.

Data Received from Host Computer

Response Required

Host computer Command Serial Communications

Board/Unit

Communications Port Enabled Flag

Command acknowledged Command completed

No Response Required

Host computer

Serial Communications Board/Unit

Communications Port Enabled Flag

(1)

Command

(1)

Command

Response

(2)

Command acknowledged Command completed

FINS Commands with Host Link Protocol Section 3-5

Command transmission to the host computer can commence even when the port is receiving a command from the host computer (1). The transmission of a response to the command from the host computer is postponed until the transmission of the command to the host computer is completed (2).

When a response is not required from the host computer, the Communications Port Enabled Flag will turn ON when the command to the host computer has passed from the CPU Unit to the port.

Host Computer Receiving Data

Response Required

Host computer

Serial Communications Board/Unit

Communications Port Enabled Flag

Command acknowledged

No Response Required

Host computer

Serial Communications Board/Unit

Communications Port Enabled Flag

Command acknowledged Command completed

At (1) in the diagram, the response to a command sent from the host computer is being transmitted from the port. In this case, the command transmission to the host computer is postponed until the response transmission is completed (2).

When a response is not required from the host computer, the Communications Port Enabled Flag will turn ON when the command to the host computer has passed from the CPU Unit to the port.

Command

(1)

Response

(1)

Response

(2)

Command

(2)

Command

Response

Command completed

FINS Commands with Host Link Protocol Section 3-5

Response Wait Time

Response Required

Host computer

Serial Communications Board/Unit

Communications Port Enabled Flag

Command acknowledged

No Response Required

Host computer

Serial Communications Board/Unit

Communications Port Enabled Flag

Command acknowledged

When response wait time has been set in the command format from the host computer, commands to the host computer will not be transmitted until the response time has elapsed (1). Transmission of responses to commands from the host computer will be postponed until the command transmission to the host computer has been completed.

When a response is not required from the host computer, the Communications Port Enabled Flag will turn ON when the command to the host computer has passed from the CPU Unit to the port.

Command

Response wait time

Command

Response wait time

(1)

Command

(1)

Command

Command completed

Response

(2)

Command completed

Response

(2)

FINS Commands with Host Link Protocol Section 3-5

3-5-10 Programming Example

0128

A202

0000

0128

012800A202

012800A219

(021) @MOV #000A D00000

(021) @MOV #0100 D00001

(021) @MOV #0000 D00002

(021) @MOV #0405 D00003

(021) @MOV #0000 D00004

(070) @XFER #000A 0100 D00010

(090) @SENDD00010 D00020 D00000

(011) KEEP 012800

(013) DIFU 012801

0002

(1)

(2)

(3)

(4)

(5)

Main execution condition

A202

0000

0128

012802A202

012802A219

0128

A219

(011) KEEP 012802

(021) @MOV #000A D00100

(021) @MOV #0201 D00101

(021) @MOV #0400 D00102

(021) @MOV #0405 D00103

(021) @MOV #0030 D00104

(098) @RECVD01000 D02000 D00100

(013) DIFU 012801

(070)

XFER #000A D02000 D05030

END

0002

(6)

(7)

(8)

(9)

(10)

(11)

(12)

1,2,3... 1. When the SEND(090)/RECV(098) Enabled Flag is ON, and the execution

condition CIO 000000 is ON, execution of the instructions for network transmissions are started. CIO 0128.00 will remain ON from when SEND(090) is started until execution has been completed.

FINS Commands with Host Link Protocol Section 3-5

2. Set the control data.

Number of send words: 10

Serial port 1 (peripheral port) Destination network address $00 (B network)

Destination node address $00 (B node) Destination unit address $00 (CPU Unit) Response required, Communications port No. 4

Number of retries: 5 Response monitor time: 2 s ($0000: Default)

3. Transmit Data Stored Stores 10 words of data starting from CIO 0100 to D00010 and later.

4. Execute SEND(090).

5. When the instruction for network communications has been completed (A202.04: ON), CIO 0128.01 will turn ON, and the instruction for sending on the network is completed.

6. Turns ON when an error is generated during execution of network communications.

7. When the Communications Port Enabled Flag is ON and execution condition CIO 0000.01 is ON, execution of the instruction for receiving via the network (RECV(098)) is started.

8. Set the control data.

Number of receive words: 10 Serial port 2 Source network address $01 Source node address $04

Source unit address $01 (Inner Board) Response required, Communications port No. 4

Number of retries: 5

Response monitor time: 4.8 s ($0030)

9. Execute RECV(098).

10. When the execution of network communications instructions has been completed (A202.04: ON), CIO 0128.03 will turn ON, and the instruction for receiving via the network is completed.

11. Turns ON when an error is generated during execution of network communications.

12. Reception data processing When there is no reception error, 10 words of data (starting from D02000)

are stored from D05030 onwards.

FINS Commands with Host Link Protocol Section 3-5

Programming Example for Host Computer Side (BASIC): Send

10 ’*************************************** 20 ’**** CS1W-SCU21 Serial Communications Unit **** 30 ’**** Command to Host Computer (SEND(090)) **** 40 ’**** Sample Send Program **** 50 ’*************************************** 60 ’ 70 ’============ Initial Settings ============ 80 CLOSE 1 90 ON ERROR GOTO *EROPE 100 DIM CHDATA$ (300) :’ Data array declaration

110 OPEN ”COM:E73” AS #1 :’ Opens port. 120 ’ 130 ’============ Main Process ============ 140 INPUT #1, COMMAND$ :’ Receives data from PLC (line). 150 T$=LEFT$ (COMMAND$, LEN (COMMAND$) -3) :’ Checks FCS. 160 GOSUB *FCS 170 IF FCS$<>MID$ (COMMAND$, LEN (COMMAND$) -2, 2) THEN ENDCODE$=”1004”:GOTO *RESPONSE 180 CMNDCODE$=MID$ (COMMAND$, 27, 4) :’ Checks command code. 190 IF CMNDCODE$<>”0102” THEN ENDCODE$=”0401” :GOTO *RESPONSE 200 FOR I=0 TO VAL (”&H”+MID$ (COMMAND$, 39, 4) ) -1 :’ Sets No. of write elements. 210 CHDATA$ (I) =MID$(COMMAND$, 43+I*4, 4) 220 PRINT “Data”;”:”;CHDATA$(I) 230 NEXT I 240 ENDCODE$=”0000” :’ Sets end code to “0000”. 250 ’========================================== 260 *RESPONSE :’ Creates a response frame. 270 RSV$=MID$ (COMMAND$, 9, 2) :’ Returns received RSV, SID 280 DA$=MID$ (COMMAND$, 19, 6) :’ without change. 290 SA$=MID$ (COMMAND$, 13, 6) :’ Swaps DNA, DA1, DA2 300 SID$=MID$ (COMMAND$, 25, 2) :’ with SNA, SA1, and SA2. 310 T$=”@000F00C0”+RSV$+”02”+DA$+SA$+SID$+CMNDCODE$+ENDCODE$ 320 GOSUB *FCS 330 RESPONSE$=T$+FCS$+”*” 340 PRINT #1, RESPONSE$ :’ Transmits data to PLC (line). 350 GOTO 140 360 ’ 370 ’===== FCS Calculation Subroutine ===== 380 *FCS :’ Adds FCS. 390 L=LEN (T$) 400 A=0 410 FOR J=1 TO L 420 TJ$=MID$ (T$, J, I) 430 A+ASC (TJ$) XOR A 440 NEXT J 450 FCS$=HEX$ (A) 460 IF LEN (FCS$) =1 THEN FCS$=”0”+FCS$ 470 RETURN 480 ’ 490 ’========== Error processing ========== 500 *EROPE 510 PRINT ”ERL=”:ERL, ”ERR”;ERR 520 CLOSE 1 530 END

FINS Commands with Host Link Protocol Section 3-5

Programming Example for Host Computer Side (BASIC): Reception

10 ’*************************************** 20 ’**** CS1W-SCU21 Serial Communications Unit **** 30 ’**** Command to Host Computer (RECV(098)) **** 40 ’**** Sample Reception Program **** 50 ’*************************************** 60 ’ 70 ’============ Initial Settings ============ 80 CLOSE 1 90 ON ERROR GOTO *EROPE 100 DIM CHDATA$ (300) :’ Data array declaration 110 CHDATA$ (0) =”0000”:CHDATA$ (1) =”1111”:CHDATA$ (2) =”2222” 120 CHDATA$ (3) =”3333”:CHDATA$ (4) =”4444”:CHDATA$ (5) =”5555” 130 OPEN ”COM:E73” AS #1 :’ Opens port. 140 ’ 150 ’============ Main Process ============ 160 RESPDATA$=”” 170 INPUT #1, COMMAND$ :’ Receives data from PLC (line). 180 T$=LEFT$ (COMMAND$, LEN (COMMAND$) -3) :’ Checks FCS. 190 GOSUB *FCS 200 IF FCS$<>MID$ (COMMAND$, LEN (COMMAND$) -2, 2) THEN ENDCODE$=”1004”:GOTO *RESPONSE 210 CMNDCODE$=MID$ (COMMAND$, 27, 4) :’ Checks command code. 220 IF CMNDCODE$<>”0101” THEN ENDCODE$=”0401” :GOTO *RESPONSE 230 FOR I=0 TO VAL (”&H”+MID$ (COMMAND$, 39, 4) ) -1 :’ Sets No. of read elements. 240 RESPDATA$=RESPDATA$+CHDATA$ (I) 250 NEXT I 260 PRINT ”Send data”;RESPDATA$ 270 ENDCODE$=”0000” :’ Sets end code to “0000”. 280 ’========================================== 290 *RESPONSE :’ Creates a response frame. 300 RSV$=MID$ (COMMAND$, 9, 2) :’ Returns received RSV, SID 310 DA$=MID$ (COMMAND$, 19, 6) :’ without change. 320 SA$=MID$ (COMMAND$, 13, 6) :’ Swaps DNA, DA1, DA2 330 SID$=MID$ (COMMAND$, 25, 2) :’ with SNA, SA1, and SA2. 340 T$=”@000F00C0”+RSV$+”02”+DA$+SA$+SID$+CMNDCODE$+ENDCODE$+RESPDATA$ 350 GOSUB *FCS 360 RESPONSE$=T$+FCS$+”*” 370 PRINT #1, RESPONSE$ :’ Transmits data to PLC (line). 380 GOTO 160 390 ’ 400 ’===== FCS Calculation Subroutine ===== 410 *FCS :’ Adds FCS. 420 L=LEN (T$) 430 A=0 440 FOR J=1 TO L 450 TJ$=MID$ (T$, J, I) 460 A+ASC (TJ$) XOR A 470 NEXT J 480 FCS$=HEX$ (A) 490 IF LEN (FCS$) =1 THEN FCS$=”0”+FCS$ 500 RETURN 510 ’ 520 ’========== Error processing ========== 530 *EROPE 540 PRINT ”ERL=”:ERL, ”ERR”;ERR 550 CLOSE 1 560 END

Serial Gateway Overview Section 3-6

3-6 Serial Gateway Overview

3-6-1 Overview

FINS messages (commands) that are received are automatically converted into the corresponding protocol and then sent via serial communications. The responses are also automatically converted. FINS messages can be converted into the following protocols.

• CompoWay/F

• Modbus-RTU

• Modbus-ASCII

• Host Link FINS (FINS commands enclosed in Host Link header and terminator)

Note Serial Communications Boards/Units can receive FINS commands

via a FINS network (including Host Link FINS) or via the CPU bus.

Applicable Units and Serial Communications Ports

Command after

conversion

CompoWay/F CS/CJ-series CPU Unit with unit version 3.0 or later,

Modbus-RTU Serial communications port on Serial Communica-

Modbus-ASCII Serial communications port on Serial CommunicaHost Link FINS

Applicable Units and serial communications

ports

serial port C on the Controller Section of an NSJ Controller, or serial port 1 or 2 on Option Board of CP-series CPU Unit (See note)

Serial communications port on Serial Communications Board/Unit with unit version 1.2 or later

tions Board/Unit with unit version 1.2 or later or serial port 1 or 2 on Option Board of CP-series CPU Unit (See note)

tions Board/Unit with unit version 1.2 or later

Using the CPU Unit

FINS message (on network or CPU bus)

FINS header

Note Not possible when a CP1E CPU unit is used.

RS-232C or peripheral port

2803

FINS header

Serial gateway is enabled when the serial communications mode of the RS-232C or peripheral port is set to Serial Gateway Mode.

RS-232C or peripheral port on CPU Unit

CompoWay/F command

Serial Gateway Overview Section 3-6

Using a Serial Communications Board/Unit

FINS message (via network or CPU bus)

FINS header

CompoWay/F command

2803

RS-232C or RS-422A/485

CompoWay/F command

FINS header

Modbus-RTU command

2804

Modbus-ASCII command

2805

User-

User-specified data

specified

The Serial Gateway is enabled under the following conditions.

• In Serial Gateway mode

• In protocol macro mode with the Serial Gateway Prohibit Switch turned OFF

3-6-2 Types of Protocol Conversion

Type of conversion (from FINS)

Converting to CompoWay/F

Converting to Modbus-RTU

Converting to Modbus-ASCII

Converting to Host Link FINS

Destination

Serial port number on Board/Unit

Any address except Board/ Unit’s serial port number.

Frame before conversion Processing at

address

FINS

command

FINS data

2803 hex CompoWay/F

command

2804 hex Modbus-RTU

command

2805 hex Modbus-ASCII

command

User-speci-

User-specified Transfers FINS

fied

Serial Communications Board/Unit

Board/Unit

CompoWay/F command with FINS header removed sent to serial port.

Modbus-RTU command with FINS header removed sent to serial port.

Modbus-ASCII command with FINS header removed sent to serial port.

command inside Host Link header and terminator.

Modbus-RTU command

Modbus-ASCII command

Host Link header

Protocol after

conversion (using serial communica-

tions)

CompoWay/F command

Modbus-RTU command

Modbus-ASCII command

FINS command for Host Link communications

User-specified FINS command

Terminator

Targ et (commu -

nications part-

ner)

OMRON Component (e.g., Temperature Controller, Digital Panel Meter, or Smart Sensor)

Modbus-RTU Slave-compatible device (including OMRON 3G3JV, 3G3MV, and 3G3RV Inverters)

Modbus-ASCII Slave-compatible device (e.g., temperature controller, indicator, or power monitor)

OMRON PC (CS/ CJ/CP/NSJ Series, or CVM1/ CV Series)

3-6-3 Converting FINS to CompoWay/F

OMRON Components connected serially to a PC via CompoWay/F can be accessed from the CPU Unit or PT using CompoWay/F commands enclosed in FINS messages.

• Sent FINS message: FINS header + FINS command code 2803 hex + CompoWay/F command

• Message after conversion: CompoWay/F command

Serial Gateway Overview Section 3-6

CPU Unit (CMND(490) instruction) or PT (Programmable Terminal)

FINS message

FINS header CompoWay/F command encapsulated

using FINS command 2803 hex

(Via network or CPU bus)

CompoWay/F command

2803

Serial Communications Unit/Board

CompoWay/F command

(RS-232C or RS-422A/485)

CompoWay/F Slave-compatible Components

Component Model series

Temperature Controllers

Timer/Counters Timers/Counters H8GN (G components) Digital Panel Meters Digital Panel Meters K3GN (G components)

Smart Sensors ZX Communications Interface

Cam Positioners --- 3F88L-160, 3F88L-162 Safety Controllers --- F3SX

Thermac NEO E5GN (G components)

E5CN E5EN E5AN

Thermac R E5AR

E5ER

Plug-in Temperature Control-

E5ZN

lers Digital Controller Boards E5ZM Digital Controllers ES100X

K3NX Digital Load Cell Meters K3NV Digital Rotary/Pulse Meters K3NR Digital Incrementing Panel

K3NP Meters

Digital Time Interval Meters K3NC Digital Temperature/Process

K3NH Meters

ZX-SF11 Units

CompoWay/Fcompatible OMRON Component

System Configuration Patterns

Sending FINS Messages Using CMND(490) in CPU Unit’s Ladder Program

The Board/Unit converts the FINS messages to CompoWay/F protocol for sending in this operation.

Access from CPU Unit (on the Same PC)

CPU Bus-to-Serial Details Routing tables to treat serial

communications path as network

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

FINS header

CompoWay/F command

CompoWay/F

2803

command

CompoWay/F-compatible OMRON component

CMND(490)

FINS message

RS-485 (CompoWay/F)

OMRON components connected serially to the Serial Communications Board/Unit using CompoWay/F can be accessed from a CPU Unit in the same PC.

Optional

Serial Gateway Overview Section 3-6

Access from CPU Unit (PC on the Network)

FINS message-to-Serial Details Routing tables to treat serial

communications path as network

CMND(490)

OMRON components connected serially

Optional to the Serial Communications Board/Unit using CompoWay/F can be accessed from a CPU Unit in a PC connected to the network.

FINS header

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

CompoWay/F command

CompoWay/F-compatible OMRON component

FINS message

CompoWay/F

2803

command

Network (Ethernet, Controller Link, DeviceNet)

RS-485 (CompoWay/F)

Executing Smart Active Parts Using an NS-series PT (Sending Internal FINS Messages)

The Board/Unit converts the FINS messages to CompoWay/F protocol for sending in this operation.

Access from PT on Ethernet or

serial NT Link

NS-series PT

Smart Active Part

FINS message (sent internally)

Ethernet

FINS header

CPU Unit or Serial Communications Unit/Board

CPU Unit

2803

CompoWay/F command

Access via serial communications using CompoWay/F is possible from a PT connected to the network by executing a Smart Active Part that is connected serially, which automatically sends an internal FINS command.

Details Routing tables to treat serial

communications path as network

Optional

Protocol

conversion

CompoWay/F command

RS-485 (CompoWay/F)

CompoWay/F-compatible OMRON component

Note When the NS-series PT is con-

nected serially to the PC using serial communications mode (1:N NT Links), and the NSseries PT sends FINS commands encapsulated in NT Link commands using Smart Active Parts, the CPU Unit removes the NT Link header, etc. from the received command, converting it to a FINS command, and transfers the command to the Serial Communications Board/Unit. The Serial Communications Board/Unit uses the Serial Gateway to convert the command into the specified protocol. This operation enables serially connected devices to access the Serial Communications Board/Unit from Smart Active Parts using an NS-series PT.

Note (1) The FINS header contains the following information.

• Remote destination network address (DNA)

Serial Gateway Overview Section 3-6

• With routing tables that treat serial communications path as a network: Network address corresponding to serial port in the routing tables.

• Without routing tables that treat serial communications path as a network: Network address for specifying actual remote PC.

• Remote destination node address (DA1)

• With routing tables that treat serial communications path as a network: 00 hex (local PC’s internal communications) (For serial-to-serial-to-serial conversion, increment the Host Link unit number by 1.)

• Without routing tables that treat serial communications path as a network: Node address for specifying actual remote PC (For serial-to-serial-to-serial conversion, increment the Host Link unit number by 1.)

• Remote destination unit address (DA2) Unit address of serial port

(2) The contents of the CompoWay/F command enclosed in the FINS mes-

sage that is sent is as follows: Node number + subaddress + SID + command text (ASCII must be used.) STX, ETX+BCC are not required when sending FINS. They are added automatically for serial communications.

3-6-4 Converting FINS to Modbus-RTU

Modbus-RTU Slave-compatible devices (including OMRON Inverters) connected serially to a PC via Modbus-RTU can be accessed from the PC or PT using Modbus-RTU commands enclosed in FINS messages.

• Sent FINS message: FINS header + FINS command code 2804 hex + Modbus-RTU command

• Message after conversion: Modbus-RTU command

CPU Unit (CMND(490) instruction) or PT (Programmable Terminal)

FINS header

Modbus-RTU command encapsulated using FINS command 2804 hex

(Via network or CPU bus)

Modbus-RTU command

2804

Serial Communications Unit/Board

Modbus-RTU command

(RS-232C or RS-422A/485)

Modbus-RTU Slavecompatible device (OMRON Inverter, etc.)

Modbus-RTU Slave-compatible OMRON Devices

Type Model series

Inverters 3G3JV

3G3MV 3G3RV

Temperature Controllers E5CN (New version)

Serial Gateway Overview Section 3-6

System Configuration Patterns

Sending FINS Messages Using CMND(490) in CPU Unit’s Ladder Program

The Board/Unit converts the FINS messages to Modbus-RTU protocol for sending in this operation.

Access from CPU Unit (on the Same PC)

CPU Bus-to-Serial Details Routing tables to treat serial

communications path as network

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

FINS header

Modbus-RTU command

Modbus-RTU Slave device (e.g, OMRON Inverter)

2804

CMND(490)

FINS message

Modbus-RTU command

RS-485 (Modbus-RTU)

OMRON Inverters connected serially to the Serial Communications Board/Unit using Modbus-RTU can be accessed from a CPU Unit in the same PC.

Access from CPU Unit (on Network PC)

FINS message-to-Serial Details Routing tables to treat serial

OMRON Inverters connected serially to the Serial Communications Board/Unit using Modbus-RTU can be accessed from a CPU Unit in a PC connected to the network.

FINS header

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

Modbus-RTU command

Modbus-RTU Slave device (e.g, OMRON Inverter)

CMND(490)

FINS message

Modbus-RTU

2804

command

RS-485 (Modbus-RTU)

Network (Ethernet, Controller Link, DeviceNet)

Optional

communications path as network

Optional

Serial Gateway Overview Section 3-6

Executing Smart Active Parts Using an NS-series PT (Sending Internal FINS Messages)

The Board/Unit converts the FINS messages to Modbus-RTU protocol for sending in this operation.

Access from PT on Ethernet or

serial NT Link

NS-series PT

Smart Active Parts

FINS message (sent internally)

Ethernet

Serial Communications Unit/Board

Protocol

conversion

CPU Unit

Modbus-RTU command

ORMON Inverter

2804FINS header

Modbus-RTU command

RS-485 (Modbus-RTU)

Note When the NS-series PT is con-

Details Routing tables to treat serial

Access via serial communications using Modbus-RTU is possible from a PT connected to the network by executing a Smart Active Part that is connected serially, which automatically sends an internal FINS command.

communications path as network

Optional

Note (1) The FINS header contains the following information.

• Remote destination network address (DNA): Same as for CompoWay/F.

• Remote destination node address (DA1): Same as for CompoWay/F.

• Remote unit address (DA2): Same as for CompoWay/F.

(2) The contents of the Modbus-RTU command enclosed in the FINS mes-

sage that is sent is as follows: Slave address (binary) + FUNCTION code (binary) + Communications data (binary) Start and CRC+End are not required when sending FINS. They are added automatically for serial communications.

Serial Gateway Overview Section 3-6

3-6-5 Converting from FINS to Modbus-ASCII

Modbus-ASCII Slave-compatible devices connected serially to a PLC via Modbus-ASCII can be accessed from the PLC using Modbus-ASCII commands enclosed in FINS messages.

• Sent FINS message: FINS header + FINS command code 2805 hex + Modbus-ASCII command

• Message after conversion: Modbus-ASCII command

CPU Unit (CMND(490) instruction)

FINS message

FINS header Modbus-ASCII command

Modbus-ASCII command encapsulated using FINS command 2805 hex

2805

(Via network or CPU bus)

Serial Communications Unit/Board

(RS-232C or RS-422A/485)

System Configuration Patterns

Sending FINS Messages Using CMND(490) in CPU Unit’s Ladder Program

The Board/Unit converts the FINS messages to Modbus-ASCII protocol for sending in this operation.

Access from CPU Unit (on the Same PLC)

CPU Bus-to-Serial Details Routing tables to treat serial

communications path as network

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

FINS header

Modbus-ASCII command

Modbus-ASCII Slave device

2805

CMND(490)

FINS message

Modbus-ASCII command

RS-485 (Modbus-ASCII)

Slaves connected serially to the Serial Communications Board/Unit using Modbus-ASCII can be accessed from a CPU Unit in the same PLC.

Optional

Modbus-ASCII command

ModbusASCII Slavecompatible device

Access from CPU Unit (on Network PLC)

FINS message-to-Serial Details Routing tables to treat serial

communications path as network

FINS header

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

Modbus-ASCII command

Modbus-ASCII Slave device

CMND(490)

FINS message

Modbus-ASCII

2805

command

Network (Ethernet, Controller Link, DeviceNet)

RS-485 (Modbus-ASCII)

Slaves connected serially to the Serial Communications Board/Unit using Modbus-ASCII can be accessed from a CPU Unit in a PLC on the network.

Optional

Note (1) The FINS header contains the following information.

• Remote destination network address (DNA): Same as for CompoWay/F.

• Remote destination node address (DA1): Same as for CompoWay/F.

• Remote unit address (DA2): Same as for CompoWay/F.

(2) The contents of the Modbus-ASCII command enclosed in the FINS mes-

sage that is sent is as follows: Slave address (ASCII) + FUNCTION code (ASCII) + Communications data (ASCII)

Serial Gateway Overview Section 3-6

The header “:” (3A hex) and LRC+CR/LF are not required when sending FINS. They are added automatically for serial communications.

3-6-6 Converting from FINS to Host Link FINS

A PC slave that is connected serially to the PC master via Host Link can be accessed from the PC master or personal computer (see note) using FINS messages. Accessing a device on another network via Host Link (serial communications) is also possible by using FINS messages. By converting the FINS to Host Link FINS, the PC can function as a Host Link master.

Note Applications such as CX-Programmer or CX-Protocol that use CX-

Server as a communications driver.

• Sent FINS message: FINS header + User-specified FINS command (see note 1)

• Message after conversion: FINS command enclosed in Host Link header and terminator (see note 2)

CX-Programmer or other application using CXServer or CPU Unit (CMND(490))

FINS message

User-specified FINS command

(Via serial, network, or CPU bus)

Serial Communications Unit/Board

Host Link header

FINS command encapsulated using Host Link

Host Link FINS command

User-specified FINS command

(RS-232C or RS-422A/485)

Terminator

OMRON PC (CS/CJ

Series, CVM1/CV

Series)

(To other network)

FINS command

System Configuration Patterns

Access from CX-Programmer (Sending Internal FINS Messages)

The Board/Unit converts the FINS messages to Host Link FINS for sending in this operation.

Access from Serially Connected CX-Programmer

Serial-to-Serial Details Routing tables to treat serial

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

Used as Host Link Master

Peripheral or RS-232C port

Host Link header

User-specified

Host Link header Terminator

FINS command

CX-Programmer, etc.

User-specified

Terminator

FINS command

RS-422A/485 (Host Link)

CS/CJ-series or CVM1/CV-series PC (Host Link Slave)

Use the following method to access the serially (serial-to-serial) connected PC from the CX-Programmer.

Personal computers (e.g., CXProgrammer) connected serially (via tool bus or Host Link) to the PC master can access a PC slave that is connected serially to the PC master via Host Link.

Optional

communications path as network

Serial Gateway Overview Section 3-6

System Configuration Example

Serial Communications Board/Unit with unit Ver. 1.2 or later (Select SCU (Unit 0 to 15) in the UNIT field.)

Set the relay PC. (Select in the Change PLC Dialog Box.)

Serial Gateway function port (Select port 1/2 in the PORT field according to the calculated address.)

Serial Gate-

way

Host Link FINS

PC name: PC2

1,2,3... 1. Register the PC to be connected serially (using Host Link FINS) in the

project gateway (e.g., PC2).

2. In the Change PLC Dialog Box of the target PC (e.g., PC1), select the relay PC (gateway PC) in the Network Type pull-down menu (e.g., [PC2] (See note.)) and click the Settings Button to the right of the Network Type pull- down menu.

Note The PC name enclosed in square brackets (e.g., [PC2]) indicates the

gateway PC.

CX-Programmer Ver. 5.0 or later

Network type: Select [PC2].

Select the Use SYSWAY with the port option in the Host Link (SYSWAY) settings.

PC name: PC1 Target PC Host Link unit number

Enter the Host Link unit number in the Host Link Unit Number field for the target PC in the Host Link (SYSWAY) settings.

Select the PC to be used as the relay PC (e.g., [PC2]) in the Network Type pull-down menu.

3. The Network Settings Dialog Box will be displayed. Click the Guide for Se- rial Gateway Button.

4. The Serial Gateway Guide Dialog Box will be displayed. Select the unit and the port number under the Calculate Address Area, the serial port number address is automatically calculated in the Calculated Address Field. Select the Use SYSWAY with the port option, and enter the actual Host Link unit number for the target (communications partner) PC in the Host Link Unit Number field (see note). Finally, click the Apply Button.

Serial Gateway Overview Section 3-6

(

)

The Serial Communications port address is automatically

Select the Unit.

Select the port.

Select this option.

Enter the unit number for the actual Host Link (values are incremented by 1 automatically).

Note When using the CX-Programmer, enter the actual Host Link unit number. Do

not add 1 to the value. The CX-Programmer will automatically add 1 internally.

Access from CX-Programmer Connected to Network

Network-to-Serial Details Routing tables to treat serial

Personal computers (e.g., CX-Programmer) connected through the network to the PC master can access a PC slave that is connected serially to the PC master via Host Link.

FINS message

User-specified FINS command

Serial Communications Unit/Board

CPU Unit

CX-Programmer, etc.

Network (Ethernet, Controller LInk, DeviceNet)

calculated.

communications path as network

Required

Protocol

conversion

Used as Host Link Master

User-specified

Host Link header

CS/CJ-series or CVM1/CV-series PC

FINS command

Terminator

RS-422A/485 (Host Link)

Host Link Slave

Note This configuration can be connected to other networks, as shown be-

low.

Network-to-Serial-to-Network Details Routing tables to treat serial

CX-Programmer, etc.

Personal computers (e.g., CX-Programmer) connected through the network to the PC master can

FINS message

User-specified FINS command

Serial Communications Unit/Board

Protocol

conversion

Used as Host Link Master

Network (Ethernet, Controller LInk, DeviceNet)

CPU Unit

User-specified

Host Link header Terminator

FINS command

User-specified FINS command

RS-422A/485 (Host Link)

CS/CJ-series or CVM1/CVseries PC (Host Link Slave)

Network (Ethernet, Controller LInk, DeviceNet)

access a PC on another network via a PC slave that is connected serially to the PC master via Host Link.

communications path as network

Required

Serial Gateway Overview Section 3-6

Sending FINS Messages or Sending/Receiving Data Using CMND(490), RECV(098), SEND(090) in the CPU Unit’s Ladder Program

The Board/Unit converts the FINS messages to Host Link FINS in this operation.

CPU bus-to-Serial Details Routing tables to treat serial

Serial Communications Unit/Board

CPU Unit

FINS message

Protocol

conversion

Used as Host Link Master

User-specified FINS command

Host Link header

CS/CJ-series or CVM1/CV-series PC (Host Link Slave)

Network-to-Serial Details Routing tables to treat serial

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

Host Link header

Used as Host Link Master

CS/CJ-series or CVM1/CV-series PC (Host Link Slave)

User-specified FINS command

CMND(490) or SEND(090)/ RECV(098)

Terminator

CMND(490)

or SEND(090)/RECV(098)

FINS message

User-specified FINS command

Network (Ethernet, Controller LInk, DeviceNet)

RS-422A/485 (Host Link)

Access from CPU Unit (on the Same PC

Slave PCs connected serially to the Serial Communications Board/ Unit using Host Link can be accessed from the CPU Unit in the same PC.

RS-422A/485 (Host Link)

Access from CPU Unit (on Network PC)

Slave PCs connected serially to the Serial Communications Board/ Unit using Host Link can be accessed from a CPU Unit in a PC connected to the network.

)

communications path as network

Optional

communications path as network

Required

Note This configuration can be connected to other networks, as shown be-

low

Network-to-Serial-to-Network Details Routing tables to treat serial

communications path as network

Serial Communications Unit/Board

CPU Unit

Protocol

conversion

Host Link header

Used as Host Link Master

User-specified FINS command

CMND(490) or SEND(090)/ RECV(098)

FINS message

User-specified FINS command

Network (Ethernet, Controller LInk, DeviceNet)

Terminator

Network (Ethernet, Controller LInk, DeviceNet)

RS-422A/485 (Host Link)

CS/CJ-series or CVM1/CV-series PC (Host Link Slave)

CPU Units in PCs connected to the network can access a PC on another network via a PC slave that is connected serially to the Serial Communications Board/Unit via Host Link.

Required

Note (1) The FINS header contains the following information.

Serial Gateway Overview Section 3-6

• Remote destination network address (DNA)

• With routing tables that treat serial communications path as a network: Network address corresponding to serial port in the routing tables.

• Without routing tables that treat serial communications path as a network: Unit address of serial port.

• Remote destination node address (DA1)

• With routing tables that treat serial communications path as a network: Unit number for Host Link incremented by 1 (1 to 32)

• Without routing tables that treat serial communications path as a network: Unit number for Host Link incremented by 1 (1 to 32)

• Remote destination unit address (DA2) Any unit address except that for the serial port (The destination for the FINS message must not be the serial port of the Board/Unit.)

• FINS command code: Any

(2) When creating Host Link FINS command frames using the CMND(490)

instruction, always set the unit number for Host Link incremented by one (1 to 32) for the remote destination (send destination) node address (word C+3, bits 08 to 15 of the CMND(490) instruction). Do not set the unit number of the actual Host Link slave (0 to 31). Using the Host Link unit number without incrementing by one will access the PC with the entered Host Link unit number less one. For example, specify the remote PC with Host Link unit number 2 by entering 3 for the remote destination node address. If 2 is entered, the PC with Host Link unit number 1 will be accessed. To access a PC on a Host Link FINS network using the Serial Gateway from CX-Programmer, however, enter the actual Host Link unit number, without incrementing by one. (Select Change PLC, click the Display Se-

rial Gateway Guide Button, and set unit number in the Host Link SYSWAY Settings field of the Serial Gateway Guide Dialog Box.

(3) The contents of the FINS command enclosed by the Host Link header

and terminator is as follows: @+Host Link unit number + Host Link header FA + FINS header + FINS command + Text + FCS + * + CR

3-6-7 Treating Serial Communications Paths as Networks

When the Serial Gateway is executed, routing tables are either required or optional as follows:

• Routing tables are required to treat a serial communications path as a network when converting FINS messages to Host Link FINS for serial conversion via the network.

• Under other conditions, routing tables are optional.

The details are provided in the following tables.

Omron CJ series, CS series, ONE NSJ series, CP series PROGRAMMING MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual

Notice:

About this Manual:

Read and Understand this Manual

PRECAUTIONS

1 Intended Audience

2 General Precautions

3 Safety Precautions

4 Operating Environment Precautions

5 Application Precautions

1-1 Overview of Communications Commands

1-2 C-mode Commands

1-3 FINS Commands

2-1 C-mode Commands

2-2 Command/Response Formats

2-3 Application Example

2-4 Precautions when Reusing Programs from Earlier Models

2-4-1 C-series Host Link Units with 1:N Host Link Format Selected

2-4-2 C-series Host Link Units with 1:1 Host Link Format Selected

2-4-3 C-mode Command Support

3-1 FINS Commands

3-2 Using FINS Commands

3-2-1 Issuing and using any command (CMND (490) instruction)

3-2-2 Using with respect to a host computer connected by Host Link

3-3 FINS Command and Response Frames

3-3-1 FINS Command Frame Configuration

3-3-2 FINS Response Frame Configuration

3-3-3 Individual Items in Command/Response Frames

3-4 Settings for Sending FINS Commands

3-4-1 FINS Command and Response Formats

3-4-2 Addresses in FINS Commands

3-4-3 Other FINS Command Settings

3-4-4 CMND(490) Setting Example

3-5 FINS Commands with Host Link Protocol

3-5-1 Connection Configurations

3-5-2 Overview of Command and Response Frames

3-5-3 Sending Commands from the Computer to the CPU Unit

3-5-5 Sending Commands from the CPU Unit

3-5-6 Command Format Received by the Host Computer

3-5-7 Response Format Returned by the Host Computer

3-5-8 Flags for Network Communications

3-5-9 Timing of Commands to Host Computers

3-5-10 Programming Example

3-6 Serial Gateway Overview

3-6-1 Overview

3-6-2 Types of Protocol Conversion

3-6-3 Converting FINS to CompoWay/F

3-6-4 Converting FINS to Modbus-RTU

3-6-5 Converting from FINS to Modbus-ASCII

3-6-6 Converting from FINS to Host Link FINS

3-6-7 Treating Serial Communications Paths as Networks