Omron CS1W-SLK11-21 OPERATION MANUAL

Download

Cat. No. W367-E1-02

SYSMAC CS1W-SLK11/21

SYSMAC LINK Units

CS1W-SLK11/21

SYSMAC LINK Units

Operation Manual

Revised June 2004

Notice:

r f

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.

!WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or

serious injury.

!Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury, or property damage.

OMRON Product References

All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to an OMRON product, regardless of whether or not it appears in the proper name of the product.

The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means “word” and is abbreviated “Wd” in documentation in this sense.

The abbreviation “PLC” means Programmable Controller. “PC” is used, however, in some Programming Device displays to mean Programmable Controller.

Visual Aids

The following headings appear in the left column of the manual to help you locate different types of information.

 OMRON, 1999

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

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is constantly striving to improve its high-quality products, the information contained in this manual is subject to change without notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in this publication.

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.

TABLE OF CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv

6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

SECTION 1

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

1-1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 SYSMAC LINK Unit Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1-3 SYSMAC LINK Unit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-4 Programming Devices and Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1-5 Data Link Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1-6 Message Service Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SECTION 2

Unit Components and Switch Settings . . . . . . . . . . . . . . . . . 15

2-1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2-2 Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2-3 Mounting to Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

2-4 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SECTION 3

Basic Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3-1 SYSMAC LINK System Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-2 Unit Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3-3 Setting Node Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3-4 Network Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

3-5 Network Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3-6 Memory Areas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

SECTION 4

Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4-2 Data Link Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4-3 Data Link Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4-4 Data Link Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4-5 Creating Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4-6 Data Link Area Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4-7 Data Link Table Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

vii

TABLE OF CONTENTS

4-8 Controlling Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4-9 Data Link Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4-10 Data Link Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4-11 Data Link Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

4-12 CX-Programmer Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

SECTION 5

Network Data Exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

5-1 What is Network Interconnection? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

5-2 Routing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5-3 Routing Table Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

SECTION 6

Message Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

6-1 About Data Read/Write Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

6-2 PLC Network Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

6-3 FINS Command/Response Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

6-4 FINS Commands for SYSMAC LINK Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

SECTION 7

Remote Monitoring and Programming . . . . . . . . . . . . . . . . 123

7-1 Remote Programming and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

SECTION 8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

8-1 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

8-2 Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

8-3 Polling Node Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

8-4 Node Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

SECTION 9

Unit Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

9-1 Replacing the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

9-2 Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147

9-3 Using the C200H-SLK21 or C1000H-SLK21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

SECTION 10

Inspection and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 149

10-1 Periodic Inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

10-2 Handling Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

10-3 Tools and Equipment Needed for Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

viii

TABLE OF CONTENTS

Appendices

A Standard Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

B Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C Related Auxiliary Area Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

D CPU Bus Unit Area Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

E DM Area Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .161

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

About this Manual:

This manual describes the installation and operation of CS-series SYSMAC LINK Units and includes the sections described below.

Please read this manual completely and be sure you understand the information provide before attempting to install and operate a SYSMAC LINK System including CS-series SYSMAC LINK Units.

Section 1 Introduction introduces the features and operations of the SYSMAC LINK Units.

Section 2 Unit Components and Switch Settings describes the names and functions of the SYS-

MAC LINK Unit components and switch settings.

Section 3 Basic Communications describes the token bus method of communications used in SYSMAC LINK Systems, as well as the basic settings necessary for operation.

Section 4 Data Links describes the operation of data links, procedures required to establish data links, and methods of monitoring data link operations.

Section 5 Network Data Exchange provides the details of the data exchange functions of the CSseries PLCs via SYSMAC LINK Networks.

Section 6 Message Service describes the PLC ladder network instructions and FINS commands that can be used to transfer data and control operation via a SYSMAC LINK System.

Section 7 Remote Monitoring and Programming provides information on remote programming and monitoring.

Section 8 Troubleshooting provides information to help identify and correct errors that might occur.

Section 9 Unit Replacement describes the replacement procedure and provides cautions for Unit

replacement.

Section 10 Inspection and Maintenance contains information describing periodic inspections required by the System.

Appendices contain information describing SYSMAC LINK Unit models, their dimensions, and area allocations.

!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.

PRECAUTIONS

This section provides general precautions for using the CS-series SYSMAC LINK Units and related devices.

The information contained in this section is important for the safe and reliable application of the CS-series SYSMAC LINK Units. You must read this section and understand the information contained before attempting to set up or operate a SYSMAC LINK System.

1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv

4 Operating Environment Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

6 Conformance to EC Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

6-1 Applicable Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

6-2 Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

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

xiii

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

so may result in electric shock.

!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, in order 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.

xiv

Operating Environment Precautions 4

• The PLC outputs may remain ON or OFF due to deposition or burning of the output relays or destruction of the output transistors. As a countermeasure for such problems, external safety measures must be provided to ensure safety in the system.

• When the 24-VDC output (service power supply to the PLC) is overloaded or short-circuited, the voltage may drop and result in the outputs being turned OFF. As a countermeasure for such problems, external safety measures must be provided to ensure safety in the system.

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

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

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.

5 Application Precautions

Observe the following precautions when using the SYSMAC LINK Unit.

!WARNING Failure to abide by the following precautions could lead to serious or possibly

fatal injury. Always heed these precautions.

• Always ground the system to 100 protect against electrical shock.

• Always turn OFF the power supply or the backup power supply to the PLC or the computer before attempting any of the following. Performing any of the following with the power supply turned ON may lead to electrical shock:

• Installing or removing the SYSMAC LINK Unit.

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

• Assembling the Units.

• Setting DIP or rotary switches.

Ω or less when installing the system to

Application Precautions 5

• Connecting or disconnecting any cables or wiring.

• Connecting or disconnecting any connectors.

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

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

• 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.

• Disconnect the functional ground terminal when performing withstand voltage tests. Not disconnecting the functional ground terminal may result in burning.

• Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so may result in malfunction, fire, or electric shock.

• 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.

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

• Wire all connections correctly.

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

• Be sure that the communications cable connectors and other items with locking devices are properly locked into place. Improper locking may result in malfunction.

• Use special packing box when transporting the SYSMAC LINK Unit. Handle the product carefully so that no excessive vibration or impact is applied to the product during transportation.

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

• Observe the following precautions when wiring the communications cable or backup power supply cables.

• Separate the cables from the power lines or high-tension lines.

• Do not bend the cables beyond their natural bending radius.

• Do not pull on the cables.

xvi

Conformance to EC Directives 6

• Do not place heavy objects on top of the cables.

• Route cables inside conduits.

• Before touching the Unit, be sure to first touch a grounded metallic object in order to discharge any static build-up.

6 Conformance to EC Directives

6-1 Applicable Directives

•EMC Directives

6-2 Concepts

EMC Directives

OMRON devices that comply with EC Directives conform to the related EMC standards so that they can be more easily built into other devices or machines. The actual products have been checked for conformity to EMC standards (see the following note). Whether the products conform to the standards in the system used by the customer, however, must be checked by the customer.

EMC-related performance of the OMRON devices that comply with EC Directives will vary depending on the configuration, wiring, and other conditions of the equipment or control panel in which the OMRON devices are installed. The customer must, therefore, perform final checks to confirm that devices and the overall machine conform to EMC standards.

Note Applicable EMC (Electromagnetic Compatibility) standards are as follows:

EMS (Electromagnetic Susceptibility): EN50082-2 EMI (Electromagnetic Interference): EN61000-6-2

6-3 Conformance to EC Directives

The CS1W-SLK11 and CS1W-SLK21 SYSMAC LINK Units comply with EC Directives. To ensure that the machine or device in which these SYSMAC LINK Units are used complies with EC directives, the SYSMAC LINK Units must be installed as follows:

1,2,3...

1. In order to conform with EC Directives, the SYSMAC LINK Units must be installed within a control panel. Use an SA20-712 (made by NITTO ELECTRIC WORKS) or a similar model.

2. Reinforced insulation or double insulation must be used for the DC power supplies used for the communications and I/O power supplies.

3. SYSMAC LINK Units complying with EC Directives also conform to the Common Emission Standard (EN50081-2). When a SYSMAC LINK Unit is built into a machine, however, noise can be generated by switching devices using relay outputs and cause the overall machine to fail to meet the Standards, particularly with radiated emission for 10-m regulations. The customer must, therefore, take measures to ensure and perform final checks to confirm that devices and the overall machine conform to EMC standards.

xvii

This section introduces the features and operations of the SYSMAC LINK Units.

1-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1-2 SYSMAC LINK Unit Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1-2-1 Standard Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1-2-2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1-3 SYSMAC LINK Unit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-3-1 Basic Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1-3-2 Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-3-3 Network Data Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1-3-4 Message Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1-3-5 Remote Programming and Monitoring . . . . . . . . . . . . . . . . . . . . . . 8

1-3-6 RAS Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1-4 Programming Devices and Support Software . . . . . . . . . . . . . . . . . . . . . . . . 8

1-4-1 Basic Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1-4-2 CX-Programmer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1-5 Data Link Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1-5-1 Manually Setting Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1-5-2 Automatically Setting Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1-6 Message Service Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SECTION 1

Introduction

Overview Section 1-1

1-1 Overview

The SYSMAC LINK is an FA network that can send and receive large data packets flexibly and easily among the OMRON CS-series, C200HX/HG/HE, CVM1, CV-series, C1000H, C1000HF, C2000H, and CQM1H-series Programmable Controllers (PLCs), as well as IBM PC/AT or compatible computers.

The SYSMAC LINK supports data links that enable data sharing and a message service that enables sending and receiving data when required. Data link words can be freely set to create a flexible data link system and effectively use memory areas.

The network is connected using coaxial cable or optical fiber cable.

Coaxial System (Coaxial Cable)

CS1W-SLK21 SYSMAC LINK Unit

CS-series PLC

C200HX/HG/HE

C200HW-SLK23/SLK24 SYSMAC LINK Unit

CVM1, CV-series PLC

CV500-SLK21 SYSMAC LINK Unit

C1000H-SLK21-V1 SYSMAC LINK Unit

C1000H, C1000HF, C2000H

IBM PC/AT or compatible

Coaxial cable

3G8C2-SLK21-E SYSMAC LINK Support Board

Optical System (Optical Fiber Cable)

CS1W-SLK11 SYSMAC LINK Unit

CS-series PLC

24-VDC Backup Power Supply

100-VAC Backup Power Supply

Optical fiber cable (Daisy-chain connection)

C200HW-SLK13/SLK14 SYSMAC LINK Unit

C200HX/HG/HE

C200H-APS03 Power Supply Unit

CV500-SLK11 SYSMAC LINK Unit

CVM1, CV-series PLC

C1000H, C1000HF, C2000H

C1000H-APS01 Power Supply Unit

C1000H-SLK11 SYSMAC LINK Unit

Internetwork Connections Communications across bridges or gateways can include up to three net-

works, including the local network. A CS-series, CVM1, or CV-series PLC can be used as the bridge or gateway to easily and economically create networks controlling multiple lines.

Network 1 (local network) Network 2 Network 3

SYSMAC LINK

Controller Link, Ethernet, SYSMAC LINK, SYSMAC NET, etc.

Controller Link, Ethernet, SYSMAC LINK, SYSMAC NET, etc

SYSMAC LINK Unit Features Section 1-2

1-2 SYSMAC LINK Unit Features

CS-series SYSMAC LINK Units are equipped with a variety of special features including some developed from those incorporated by the C-series SYSMAC LINK Unit. These features allow PLCs in a SYSMAC LINK Network to communicate with or automatically exchange data with other PLCs in the same Network and to communicate with interconnected Networks.

High Speed, Reliability, and Flexibility

Distributed Control with Data Links

Active Communications Communications can also be programmed using ladder-diagram instructions

The specialized communications LSIs used in all SYSMAC LINK Units deliver high speed, reliability, and flexibility in an advanced data link system, while optical fiber cable systems provide high-speed communications with unparalleled immunity to noise.

In the event of an error or failure in the polling node, another node automatically takes over management of the SYSMAC LINK System without stopping the entire network. The CX-Net within the CX-Programmer can monitor and/or program PLCs anywhere in the network via the SYSMAC LINK System.

The data link function transfers data to and from other nodes automatically, establishing simple but powerful peer-to-peer links between nodes. Data links can be generated automatically or the user can use the flexibility of manually generating data links to eliminate unused link words, improve data link I/O response time, and to even create several data link groups in one network.

The data link communications cycle time can be fixed at a constant value, so even simultaneous remote programming/monitoring and NETWORK READ/ WRITE instructions (RECV(98)/SEND(90)) execution have no effect on the data link I/O response time.

The data link function allows data exchange not only between PLCs but also between PLCs and host computers in the network, making it possible to develop communications software with ease.

(SEND(90), RECV(98), and CMND(490)) to facilitate communications with other PLCs and host computers on an as-needed basis. Use of these instructions enables the following:

1,2,3... 1. Broadcast transmissions

2. Response monitoring time setting (response time-out setting)

3. Transmit retry setting

4. Enabling/disabling responses

Internetwork Communications

Remote Access The CX-Net within the CX-Programmer can access PLCs on the local net-

RAS Functions SYSMAC LINK Units are equipped with three RAS functions (RAS is an acro-

Routing tables can be set up in network PLCs so that communications are possible with interconnecting networks or networks one network away from the local network. This includes both bridging to other SYSMAC LINK Networks or passing gateways to other OMRON networks, including those in SYSMAC NET Link Systems or SYSMAC BUS/2 Remote I/O Systems.

work, on adjacent networks, or on networks one removed from the local network, including Controller Link and Ethernet Networks. Access can be used to monitor operation and/or manipulate data and programs.

nym for reliability, availability, and serviceability). The Polling Node Backup and Failed Node Bypass (optical systems only) functions prevent the network from failing when one Unit fails. The Internode Echo Test function aids in communications troubleshooting.

Remote monitoring of the network’s operating status and error logs also aids in troubleshooting and quick correction of communications problems.

SYSMAC LINK Unit Features Section 1-2

1-2-1 Standard Models

SYSMAC LINK Units

Applicable

PLCs

CS-series PLCs

(CS1-H, CS1)

Unit

classification

CPU Bus Unit Coaxial SYSMAC

Name Transmission

LINK Unit Optical SYSMAC

LINK Unit

path

Coaxial cable Data links (manually set or auto-

Optical fiber cable

matically set), messages (through SEND(90), RECV(98), and CMND(490) instructions)

Communications Model

CS1W-SLK21

CS1W-SLK11

SYSMAC LINK Programming Devices

Product Specifications Model

CX-Net (within CX-Programmer)

Setting manually set data links, starting/stopping data links, reading network status, reading error logs, setting routing tables, testing networks, changing network parameters settings

Note The CS-series SYSMAC LINK Unit cannot be directly con-

nected to SYSMAC Support Software.

WS02-CX@@E

1-2-2 Specifications

General Specifications

Conform to the specifications of the CS Series.

SYSMAC LINK Unit Specifications

Item Specifications

Model CS1W-SLK21 CS1W-SLK11 Type Coaxial Optical fiber Unit classification CS-series CPU Bus Unit Applicable PLCs CS-series PLCs Max. number of Units 4 Units max. (total Coaxial Units and Optical Units) Mounting position Four slots on the CPU Racks and CS-series Expansion Racks Allowable unit number settings 0 to F CPU Unit data

exchange areas

Settings Rotary switch: Unit number

Indicators LEDs: 9 on Optical Unit, 8 on Coaxial Unit

Front panel connectors BNC connector Two optical fiber connectors

Effect on CPU Unit cycle time 0.2 ms

Current consumption (supplied from Power Supply Unit)

Dimensions 35 × 130 × 101 mm (W x H x D)

CPU Bus Unit Area

Words allocated to CPU Bus Units in DM Area

25 words/Unit SYSMAC Link Unit to CPU Unit:

Data link status, network participation status, error information, etc. 100 words/Unit (Only first word of the 100 words is used.) CPU Unit to SYSMAC LINK Unit:

Polling/polled node setting, starting data links, data link mode (automatic/manual) settings, number of data link words for automatic data links, etc.

Rotary switches: Node addresses

Coaxial and Optical Units: Running, communications error, CPU Unit error, network participation, polling, send, receive, data link active

Optical Unit Only: Power ON

Power supply terminal block (24 V DC)

Requires an additional 1.5 ms + (No. of words transferred x 0.001 ms) when data links are used.

Requires additional event processing time when servicing messages. 480 mA at 5 V DC 470 mA at 5 V DC

SYSMAC LINK Unit Features Section 1-2

Item Specifications

Weight 302 g (including F adapter) 332 g (including cable bracket) Standard accessories F Adapter, insulating cover Cable bracket

SYSMAC LINK Communications Specifications

Item Specifications

Type Coaxial Optical fiber Communications functions Data links, messages Communications method Token bus (N:N) Transmission method Manchester encoding Modulation Baseband Synchronization Flag synchronization (HDLC frames) Transmission path Bus Daisy chain Baud rate and maximum

transmission distance

Transmission path Coaxial cable (5C-2V) 2-carrier hard-plastic-clad quartz optical

Node connection BNC connector Special full-lock connector (a half-lock con-

Number of nodes 62 max. Number of data link words Send words per node: 508 words max. (254 words in CIO Area + 254 words in DM Area)

Data link words Automatic settings: CIO 1000 to CIO 1063 (Data Link Area), D00000 to D00127 (DM

Message length 552 bytes max. (including header) RAS functions Automatic polling node backup, self-diag-

Error control

2 Mbps (fixed) Maximum transmission distance: 1 km

Data link words (send and receive) that can be created in a single SYSMAC LINK Unit: 2,966 words max. (CIO Area + DM Area)

Area) Manual settings: CIO 0000 to CIO 6143 (entire CIO), entire DM Area (D00000 to D32767) When creating manually set data link tables using CX-Programmer Ver. 1.2 or earlier, the

words that can be set by the user are limited to the same words as for CVM1/CV, as follows:

CIO Area: CIO 0000 to CIO 2555 DM Area: D00000 to D24575

nostics (startup hardware check), internode testing, broadcast test (using FINS command), watchdog timer, error log

Manchester encoding check, error (CRC-CCITT) detection = X

2 Mbps (fixed) Maximum transmission distance: 10 km Maximum distance between nodes:

Crimp cut: 800 m, adhesive polishing: 1 km (The maximum distance between nodes is determined by the connector cable processing method.)

fiber cable

nector can also be used)

Automatic polling node backup, self-diagnostics (startup hardware check), internode testing, broadcast test (using FINS command), watchdog timer, error log, failed node bypass

+ X12 + X5 + 1

SYSMAC LINK Unit Functions Section 1-3

Data Link Specifications

Type of data link Automatic settings Manual settings

Number of data link nodes 62 nodes max. (2 nodes min.)

Number of words per node (sending and receiving)

Areas supporting data links

Starting data link word

Number of words sent per node

Allocating data link words

CIO Area Data Link Area:

DM Area D00000 to

CIO Area CIO 1000 Manual settings can be made between

DM Area D00000 Manual settings can be made between

CIO Area Either 4, 8, 16, or 32 words (same for

DM Area Either 8, 16, 32, or 64 words (same for

CIO Area Each node has the same number of

DM Area

2,966 words max. (CIO Area + DM Area total)

Select from the CIO 1000 to CIO 1063

D00127

each node)

data link words and words are allocated to nodes in the order of node addresses.

following: CIO

Area only, DM

Area only, CIO +

DM Areas

CIO Area (CIO 0000 to CIO 6143)

DM Area (D00000 to D32767)

CIO 0000 to CIO 6143

D00000 to D32767 0 to 254 words (separate for each

node)

The number of data link words and the order of allocation can be set for each node. The same order of allocation must be used for both the CIO Area and the DM Area.

Message Communications Specifications

Instructions SEND(90)/RECV(98) CMND(490)

Application Data sending and receiving Reading and writing data at other nodes

(e.g., reading/writing file memory), controlling operation (e.g., controller operating modes), reading error logs, etc.

Message contents Commands for sending and receiving

Local node to partner node

Local node: partner node SEND(90): 1:1 or 1:N (broadcast)

Number of words sent and received

PLC to PLC Possible Possible PLC to computer Possible (requires program that returns

Computer to PLC Possible (requires program that receives

data

responses from the computer)

responses at the computer)

RECV(98): 1:1 256 words max. (512 bytes) 542 bytes max.

Any supported FINS commands

Possible (requires program that returns responses from the computer)

Possible (requires program that receives responses at the computer)

1:1 or 1:N (broadcast)

1-3 SYSMAC LINK Unit Functions

This section explains the settings and functions for the SYSMAC LINK Unit. For details, refer to the relevant sections.

1-3-1 Basic Settings

Node Address (See pages 18 and 35)

Unit Number (See pages 18 and 35)

Perform the basic settings to use the SYSMAC LINK Unit.

Set the address of the local node in the network using the rotary switches on the front of the SYSMAC LINK Unit.

Up to 16 CPU Bus Units (SYSMAC LINK Units, Controller Link Units, Ethernet Units, Serial Communication Units, etc.) can be mounted on one PLC. Of these, however, only a maximum of four Units may be SYSMAC LINK Units.

SYSMAC LINK Unit Functions Section 1-3

Set the unit number of each Unit manually from between 0 to F Hex (0 to 15) using the rotary switches on the front of the SYSMAC LINK Unit.

Network Parameters (See page 36)

1-3-2 Data Links

Automatic Settings (See page 49)

Manual Settings (See page 49)

The following parameters are set with the Support Software (CX-Net within the CX-Programmer).

• Communications cycle time

• Maximum node address

• Number of polled nodes

• Maximum number of frames

SYSMAC LINK Units can be used to create data links between PLCs and computers on the same network. The data links support the following functions: Automatic settings (communications using data link words with settings made automatically from settings made in PLC memory), and manual settings (communications using data link tables with settings made using the CX-Net within the CX-Programmer).

The areas to be used in creating the data links (CIO Area and/or DM Area) and the number of data link words for each node are set in parameters in the DM Area.

• Data Link Table Settings

The common link parameters and refresh parameters required by data links are set using Support Software.

Common link parameters:The same for all nodes Refresh parameters: Unique to each node

• Data Link Area Settings

The data areas (i.e., CIO Area and/or DM Area) to be used in the data links are specified in the common link parameters.

• Number of Words in Data Links

The number of data link words for each node is specified in the common link parameters.

• Data Link Node Settings

The nodes to be linked to the local node are specified in the refresh parameters. It is possible to use these settings to set multiple groups within a single network. The settings are made for each node individually.

1-3-3 Network Data Exchange

The SYSMAC LINK Unit can send and receive data by connecting to other networks of the same type or to different networks.

• Bridges: Commands can be used to send and receive between SYSMAC LINK Networks.

• Gateways: Commands can be used to send and receive between networks with different communications protocols, such as Controller Link and Ethernet.

Commands and data can be sent and received across a maximum of three networks (including the local network).

Programming Devices and Support Software Section 1-4

Routing Tables (See page 86)

Routing tables are set using the Support Software to specify paths for sending and receiving data between networks. The routing tables consist of the following two tables.

• Local Network Table: Set the combination of unit numbers and network addresses for each Communications Unit.

• Relay Network Table: Set the communications path between the sender and receiver.

1-3-4 Message Service

The SYSMAC LINK Units support SEND(90) and RECV(98) instructions for reading data from and writing data to other node PLCs. The SYSMAC LINK Units also support CMND(490) instructions for sending and receiving FINS commands that control PLCs and CPU Bus Units. Using these instructions, it is possible to control complicated functions without creating a communications program.

Refer to SECTION 6 Message Service for details.

1-3-5 Remote Programming and Monitoring

Remote programming and monitoring can be performed between SYSMAC LINK, Controller Link, and Ethernet Networks. A maximum of three levels of network communications (including the local network) are supported.

Refer to SECTION 7 Remote Monitoring and Programming for details.

1-3-6 RAS Functions

The SYSMAC LINK Unit supports RAS functions to help protect the network and recover from errors.

Internode Test Communications between the local node and a specified node within the net-

work can be tested. The test settings are made using the Support Software.

Broadcast Test All the nodes within a specified network can be tested using the Support Soft-

ware broadcast test function.

Error Log (See page 137)

Polling Node Backup (See page 143)

Node Bypass (See page 143)

If an error occurs in the Unit, the time of the error and the error contents are logged in EEPROM within the Unit. The logged error information can be read using the Support Software.

If an error occurs in the polling node, the Unit at another node automatically becomes the polling node and rebuilds the network.

If a backup power supply is used with an Optical SYSMAC LINK System, any node that goes down will be automatically bypassed, preventing the entire network from going down.

1-4 Programming Devices and Support Software

The CX-Programmer is needed to use a SYSMAC LINK Network.

Programming Devices and Support Software Section 1-4

1-4-1 Basic Programming

One of the following Programming Devices can be connected to the CPU Unit to automatically set data links or use the message service.

The following operations are possible.

1-4-2 CX-Programmer

The CX-Net operations within the CX-Programmer are required when using manually set data links, or when setting or monitoring detailed settings of the SYSMAC LINK Unit. This Support Software can be used with a CS-series PLC and is ideal for the following applications.

Programming Console

Startup node

CPU Unit

SYSMAC LINK

CX-Programmer

IBM PC/AT or compatible

• Selecting manual or automatic setting for data links.

• Setting the data links for automatic data link allocation (software switches).

• Starting/stopping data links (Start Bit: ON/OFF)

• Programming the message service.

• Reading (monitoring) network status.

• Setting manual data links (i.e., creating and storing data link tables).

• Starting/stopping data links.

• Reading (monitoring) network status.

• Reading error logs.

• Setting routing tables.

• Testing the Network.

• Changing network parameters.

Software switches (DM Area)

Using a Personal Computer as a Peripheral Device

IBM PC/AT or compatible

Setting data link tables

CX-Net in CX-Programmer

Transmissions

CS-series PLC

Nodes

RS-232C

SYSMAC LINK Unit

CPU Unit

Data Link Procedures Section 1-5

Using a Personal Computer as a Node

CX-Net in CX-Programmer

IBM PC/AT or compatible

SYSMAC LINK Support Board

Setting data link tables

Software External

CX-Programmer WS02-CX@@E

Note (1) The CS-series SYSMAC LINK Units cannot be directly connected to

SYSMAC Support Software.

(2) For further details about the CX-Programmer, refer to the CX-Program-

mer Operation Manual.

(3) The CX-Net in the CX-Programmer cannot set data link tables for the

C200H-SLK21 or C1000H-SLK21. Refer to

or C1000H-SLK21

1-5 Data Link Procedures

1-5-1 Manually Setting Data Links

When the data link mode is set for manual data link table creation, the data link tables can be input using the CX-Net within the CX-Programmer. Use the following procedure.

1,2,3... 1. Install and wire the Units.

Contents Method Nodes Page

a. Mount the Units to

the PLCs. b. Wire the Network. --- All nodes 19 c. Connect terminat-

ing resistance

Model

appearance

9-3 Using the C200H-SLK21

for details.

--- All nodes 18

Use C100H-TER01 Te r m i n a to r .

Coaxial systems only. End nodes on the net-

work: Connect Terminator

2. Prepare for communications.

Contents Method Nodes Page

a. Set the unit num-

ber. b. Set the node

address.

Use the front rotary switches.

CS-series, CVM1, and CV-series PLCs only

All nodes

Data Link Procedures Section 1-5

3. Turn ON the power to the PLC.

Contents Method Nodes Page

Turn ON the power to the PLC.

4. Connect the Programming Device.

Contents Method Nodes Page

Connect the Programming Console or Support Software.

5. Create I/O tables.

Contents Method Nodes Page

Input the I/O tables. Use the SYSMAC

6. Set the data link mode.

Contents Method Nodes Page

Set data link mode to manual.

--- All nodes ---

Use the special connection cable.

Support Software or Programming Console.

Use the SYSMAC Support Software or Programming Console.

CS-series, CVM1, and CV-series PLCs

CS-series, CVM1, and CV-series PLCs only

Data link startup node only

The node that is used to start the data link is called the startup node. It is necessary to decide beforehand which node will be the startup node.

---

Note Be sure that the data link mode in the data link parameters in the DM

Area is set to 00 when using manually set data links.

7. Register the data link tables by making the following settings for each node.

Contents Method Nodes Page

First data link status word Use the CX-Net Data link nodes Area 1First data link sta-

tus words Numbers of data

link words

Area 2First data link sta-

tus words Numbers of data

link words

within the CX-Programmer.

All nodes within the network

Delete from the data link tables all nodes that are not in a data link.

46, 67

Note Offsets are used to control where data is placed within the receive ar-

ea.

Data Link Procedures Section 1-5

8. Start the data links.

Contents Method Nodes Page

Start the data links. Switch the Data link

Start/Stop Bit (see below) from OFF to ON using either the Programming Device, the user program, the CX-Net within the CXProgrammer.

Note (a) Data link Start/Stop Bit (N= unit number):

CS Series: Word 0 of DM30000 + 100

(b) The data links will not start if there is an error in the data link ta-

bles in the startup node.

9. Stop the data links.

Contents Method Nodes Page

Stop the data links. Switch the Data link

Start/Stop Bit (listed below) from OFF to ON using either the Programming Device, the user program, the CX-Net within the CXProgrammer.

Data link startup node (The Start Bit can be

turned ON in more then one node to make sure the data links start even when the startup node is down.)

× N

Any node that is active in the data link

55, 67

Note Data link Start/Stop Bit (N= unit number):

CS Series: Word 0 of DM30000 + 100

1-5-2 Automatically Setting Data Links

Data link tables can be automatically created by setting the data link mode to automatic data link table creation. Use the following procedure.

1,2,3... 1. Install and wire the Units.

Contents Method Nodes Page

a. Mount the Units to

the PLCs. b. Wire the Network. --- All nodes 19 c. Connect terminat-

ing resistance

2. Prepare for communications.

Contents Method Nodes Page

a. Set the unit num-

ber. b. Set the node

address.

3. Turn ON the power to the PLC.

Contents Method Nodes Page

Turn ON the power to the PLC.

× N

--- All nodes 18

Use C100H-TER01 Te r m i n a to r .

Use the front rotary switches.

--- All nodes ---

Coaxial systems only. End nodes on the net-

work: Connect Terminator

CS-series, CVM1, and CV-series PLCs only

All nodes

Data Link Procedures Section 1-5

4. Connect the Programming Device.

Contents Method Nodes Page

Connect the Programming Console or Support Software.

5. Create I/O tables.

Contents Method Nodes Page

Create the I/O tables. Use the SYSMAC

6. Set the parameters for automatic data link creation.

Contents Method Nodes Page

a. Set the data link

mode to automatic.

b. Set the number of

data link words.

Use the special connection cable.

Support Software or Programming Console.

Use the SYSMAC Support Software or Programming Console.

CS-series, CVM1, and CV-series PLCs only

Data link startup node only

The node that is used to start the data link is called the startup node. It is necessary to decide beforehand which node will be the startup node.

Data link startup node only

---

7. Start the data links.

Contents Method Nodes Page

Start the data links. Switch the Data link

Start/Stop Bit (listed below) from OFF to ON using either the Programming Device, or the user program.

Note Data link Start/Stop Bit (N= unit number):

CS Series: Word 0 of DM30000 + 100

8. Stop the data links.

Contents Method Nodes Page

Stop the data links. Switch the Data link

Start/Stop Bit (listed below) from OFF to ON using either the Programming Device, or the user program.

Note (a) Data link Start/Stop Bit (N= unit number):

CS Series: Word 0 of DM30000 + 100

(b) The data links will not start if there is an error in the data link ta-

bles in the startup node. Data links can be started and stopped using the CX-Net within the CX-Programmer.

Data link startup node (The Start Bit can be

turned ON in more then one node to make sure the data links start even when the startup node is down.)

× N

Any node that is active in the data link

× N

55, 67

Message Service Procedure Section 1-6

1-6 Message Service Procedure

The following steps outline the basic procedure for using the message service.

1,2,3... 1. Install and wire the Units.

Contents Remarks Page

a. Mount the Units to the PLCs. --- 18 b. Wire the Network. --- 19 c. Connect terminating resistance Coaxial systems only.

2. Prepare for communications.

Contents Remarks Page

a. Set the unit number. CS-series, CVM1, and CV-series

PLCs only

b. Set the node address. ---

3. Turn ON the power to the PLC.

Contents Remarks Page

Turn ON the power to the PLC. --- ---

4. Create the I/O tables.

Contents Remarks Page

Create the I/O tables. CS-series, CVM1, and CV-series

PLCs only

---

5. Register routing tables if using internetwork connections.

Contents Remarks Page

a. Set the local network table --- 86 b. Set the relay network table ---

6. Create the user program.

Contents Remarks Page

a. Prepare the send and receive

data in memory. b. Prepare the control data for the

communications instruction. c. Check the conditions for exe-

cuting the SEND/RECV or

CMND instruction.

d. Execute the SEND/RECV or

CMND instruction. e. Execute other instructions are

required for the results of the

communications instruction,

(e.g., retry or error processing

if an error occurs).

Stored in the memory areas of the source node

The standard input conditions are the Active Node Flags for the source and destination nodes, and the Port Enabled Flag.

---

The standard input condition is the Port Error Flags.

CS-series PLCs have 8 communications ports. When 9 or more communications instructions are executed at the same time, exclusive control is necessary.

SECTION 2

Unit Components and Switch Settings

The names and functions of the SYSMAC LINK Unit components and switch settings are described in this section.

2-1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2-1-1 Component Names and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2-1-2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2-2 Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2-3 Mounting to Backplanes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2-4 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2-4-1 Coaxial Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2-4-2 Optical Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2-4-3 Backup Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Nomenclature Section 2-1

2-1 Nomenclature

This section describes the names and components of the SYSMAC LINK Unit.

2-1-1 Component Names and Functions

This section describes the names and functions of the SYSMAC LINK Unit components.

CS1W-SLK11 Optical SYSMAC LINK Units

Indicators

LED indicators that display the Unit and network status.

Unit number switch

One rotary switch. The unit number is set in single-digit hexadecimal for the network to which the PLC is connected.

Node address switches

Two rotary switches. The node address of the Unit on the SYSMAC LINK Network is set in 2-digit decimal.

CS1W-SLK21 Coaxial SYSMAC LINK Units

Optical connectors

Connectors to connect to the SYSMAC LINK Network communications cable (optical fiber cable).

Power Supply Terminal Block

Connect the backup battery for the node bypass function.

Indicators

LED indicators that display the Unit and network status.

Unit number switch

One rotary switch. The unit number is set in single-digit hexadecimal for the network to which the PLC is connected.

Node address switches

Two rotary switches. The node address of the Unit on the SYSMAC LINK Network is set in 2-digit decimal.

Coaxial connector

Connects to the SYSMAC LINK network communications coaxial cable.

Nomenclature Section 2-1

2-1-2 Indicators

The status of the SYSMAC LINK Units is shown by the indicators listed below.

Optic al SYSMAC LINK Unit (CS1W-SLK11)

Indicator name Color Condition Meaning

RUN Green Lit Unit is operating normally.

Not lit Watchdog timer error has occurred.

P/S (power supply ON, CS1W-SLK11 only)

ERC (communications error)

ERH (PLC error) Red Lit No I/O table has been set or PLC CPU, PLC model, PLC version, PLC

INS (Network inclusion)

M/S (polling node) Orange Lit Unit is polling node.

SD (send) Orange Lit Unit is sending data.

RD (receive) Orange Lit Unit is receiving data.

LNK (data link) Orange Lit Unit is part of active data link.

Green Lit Power is being supplied from the backup power supply.

Not lit Power is not being supplied from the backup power supply.

Red Lit Communications error has occurred, node address setting is incorrect,

Not lit None of the above errors has occurred.

Orange Lit Unit is part of Network.

Not lit Unit is not part of Network.

Not lit Unit is not part of Network or is polled node.

Not lit Unit is not sending data.

Not lit Unit is not receiving data

Flashing Data link error has occurred. Rapid flash-

ing Not lit Unit is not part of active data link.

or same node address has been set twice.

interface, EEPROM, unit number setting, or a unit number duplication error has occurred.

Data link table communications cycle time is too short.

Coaxial SYSMAC LINK Unit (CS1W-SLK21)

Note If the Unit is participating in the network, the SD and RD indicators will light

when sending and receiving the token.

Switch Settings Section 2-2

2-2 Switch Settings

The SYSMAC LINK Unit provides rotary switches on the front panel with which to set the node address (“NODE NO.”) and unit number. You must turn OFF the PLC before setting the rotary switches. If you have changed the settings when the PLC is not turned OFF, you must restart the SYSMAC LINK Unit or the PLC to use the new settings.

Switch Positions The switches are positioned as shown in the following diagram.

Set the unit number with SW1. Set the node address with SW2 and SW3. The setting ranges are given in the following table.

Settings Values

Switches Range Remarks Page

Unit number (UNIT No.)

Node address (NODE No.

×101, ×100)

2-3 Mounting to Backplanes

Up to a total of four SYSMAC LINK Units (coaxial and optical) can be mounted on the CPU Rack or CS-series Expansion Racks. SYSMAC LINK Units cannot be mounted on C200H Expansion Racks or Slave Racks.

Note Tighten the screws on the Backplane to a torque of 0.9 N • m.

Tighten the mounting screws on the Units to a torque of 0.4 N • m.

0 to F Hex Each Unit in the PLC must

have a unique unit number.

01 to 62 decimal Each node on the network

must have a unique address.

Cable Connections Section 2-4

CPU Rack (CS1W-BC103, CS1W-BC083, CS1W-BC053, CS1W-BC033, CS1W-BC023)

CPU Rack

SYSMAC LINK Units can be mounted to the 2/3/5/8/10 slots shown in the diagram on the right.

2/3/5/8/10 slots

CS-series Expansion Racks (CS1W-BI108, CS1W-BI083, CS1W-BI053, CS1W-BI033)

3/5/8/10 slots

C200H Expansion Rack

Note Up to 16 CPU Bus Units may be installed to on PLC.

2-4 Cable Connections

SYSMAC LINK Units can be connected with either coaxial cable or optical fiber cable. This section describes the procedures required to connect these cables.

2-4-1 Coaxial Units

This section describes the procedures required to connect SYSMAC LINK Units with coaxial cables.

CS1 Expansion Rack

SYSMAC LINK Units can be mounted to the 3/5/8/10 slots shown in the diagram on the right.

C200H Expansion I/O Rack

SYSMAC LINK Units cannot be mounted to Expansion I/O slots.

Mount to up to four of these slots.

PS: Power Supply Unit CPU: CPU Unit

Required Components

1,2,3... 1. Coaxial cable and Connectors:

Use the 5C-2V coaxial cable designed for indoor use. Install connectors on each end of the cable. Cables must be continuous. No intervening cable connectors or breaks are permitted. OMRON recommends the following cables and connectors.

2. F Adapters (C1000H-CE001): Coaxial cables are connected to the SYSMAC LINK Units via F Adapters.

One F Adapter is included as an accessory with SYSMAC LINK Units that use coaxial cables (CV500-SLK21).

3. Terminator (C1000H-TER01): Two Terminator units (sold separately) are required, one for the F Adapter

at each end of the network.

Cable Connections Section 2-4

Connection Procedure

The connection procedure is described briefly below.

1,2,3... 1. Install connectors on each end of the cables.

2. Connect Terminator to the F Adapter at each end of the network (i.e., to the unused connectors at the last Unit on each end). Hold the connector in one hand and press the resistance into it firmly with the other.

3. Connect the F Adapters to the SYSMAC LINK Units by firmly pushing the adapter onto the coaxial connector on the Unit and turning the locking ring to the right until it locks. Start at one end of the network and connect the F Adapters to the other end in order.

F Adapter

Connector

Cable Connection

Terminator

5C-2V coaxial cables

Terminator

1,2,3... 1. Firmly press the F-Adapter into the Unit, and turn the locking ring to the

right until it locks.

Turn locking ring to the right.

Cable Connections Section 2-4

2. Place an insulation cover over the F Adapter.

Insulation cover

3. Any bends in the coaxial cable must be 45 mm in radius or greater (six times the outer diameter of the cable). When laying the cable, make bends of 110 mm in radius or greater (15 times the outer diameter of the cable).

Note (1) Before connecting or removing the coaxial cable, always touch a ground-

ed metal object to discharge static electricity from your body. (2) Always make sure the power is OFF before connecting the coaxial cable. (3) Insert the coaxial connectors firmly. Also, be sure that the coaxial cable

is locked before use.

Attaching Connectors to Coaxial Cable

Assemble the connector parts as shown below.

Ferule

A hand crimp tool (CR-H-1130 by Dai-ichi Denshi Kogyo) is required when crimping.

Sleeve

Radius

Contact clip

Contact

45 mm minimum

Body

Approx. 24.3 mm

Cable Connections Section 2-4

1,2,3... 1. Cut the cable to the required length.

Approx. 24.5 mm Approx. 24.5 mm

Cable

LA mm = L mm − 12 mm

(Unit: mm)

2. Remove 15 mm of the outer covering. Be careful not to damage or to distort the braiding.

15 mm

3. Insert the ferrule as shown below.

Ferrule

Cable

4. Spread the tip of the braiding, and insert the sleeve. Using the trimming tool, push in the sleeve flange forcefully until it fits flush with the braiding.

Ferrule

Sleeve

Shield

Ferrule

Sleeve

5. Align A of the central conductor polyethylene projecting towards the outside of the trimming tool with the outside of the tool as shown below and then cut the polyethylene.

Trimming tool

Conductor

Ferrule

Blade

Shield

Sleeve

Cable Connections Section 2-4

6. Using your fingertips, press down on B on the trimming tool blade, forcing the blade into the polyethylene, and twist several times. Continuing to press down on B, withdraw in the direction of arrow D as shown below.

Conductor

7. Use scissors to cut off any protruding braiding as shown below.

8. Insert the contact into the contact crimp adapter, and set them inside the crimp tool die. Insert the cable central conductor into the contact hole until the severed face of the polyethylene meets the contact guard. Firmly grasp the crimp tool handle and crimp.

9. Insert the completed contact subassembly into the body. Gently rotate and press until the contact wings enter the insulator cavity, and align the contact tip with the insulator tip. After inserting the contact wings into the cavity, rotate the cable and the body until the body is crimped.

Contact subassembly

Body

Insulator

Cable Connections Section 2-4

10. Open the crimp tool handle, hold the tip of the body to the body stopper as shown below, and close the handle until the ratchet can no longer turn. Align the body hole with the hexagonal part of the die and crimp. A correct crimp should resemble the diagram below.

Checks After Attaching the Connector to the Coaxial Cable

Body stopper

Cable

Crimp height

Body

Check that the body crimp is correct. If you crimp without holding the tip of the body to the body stopper, the crimp will be partway along the body as shown in the diagram on the right.

Wrong

Check that the contact tip is in the same position as the open mouth of the connector.

Body

Using a tester, check the following:

• Are the central conductor and the braiding insulated in the plug shell on the coaxial cable connector?

• Are the plug shells conducting through the connectors at both ends of the coaxial cable?

• Are the central conductors conducting through the connectors at both ends of the coaxial cable?

Cable Connections Section 2-4

Provide a space between the bottom of the Unit and the cable as shown below to ensure a suitable bend radius.

200

137

(Unit: mm)

Note Separate the coaxial cable from other power lines and high-voltage lines to

prevent noise.

2-4-2 Optical Units

The following devices are required for the Optical SYSMAC LINK Network.

Required Components

Optical Fiber Cables Use the following adhesive-polished Optical Fiber Cables (Hard Plastic-clad

Fiber: H-PCF).

Name Specifications Model

H-PCF cables Black 10 m S3200-HCCB101

50 m S3200-HCCB501 100 m S3200-HCCB102 500 m S3200-HCCB502 1,000 m S3200-HCCB103

Orange 10 m S3200-HCCO101

50 m S3200-HCCO501 100 m S3200-HCCO102 500 m S3200-HCCO502 1,000 m S3200-HCCO103

Cable Connections Section 2-4

Note The Optical Fiber Cable model numbers are as follows:

Connectors

S3200-H

Name Model Specifications

Connector S3200-COCF2071

Inline Adapter S3200-COIAT2000 Use to connect or extend cables.

(((((((

(See note 1.) S3200-COCF2571

(See note 1.)

Tensioner option None: Standard (with tension member) N: Without tension member

Cable length

(((

A B (A/10) x 10

Cable color B: Black O: Orange

Cable specification L: With power supply line C: Without power supply line

Type B: Cord C: Cable

Use to connect a cable to a node. (Full-lock connector for crimp-cut cable.)

Use to connect a cable to a node. (Half-lock connector for crimp-cut cable.)

(Use one adapter for each connection.)

Note (1) Production of S3200-COCF2011 (full-lock) and S3200-COCF2511 (half-

Optical Fiber Cable with Connectors

lock) Connectors has been stopped. Use the above Connectors as replacements.

(2) Either full-lock or half-lock connectors can be used in a SYSMAC LINK

Network, but we recommend full-lock connectors to prevent accidental disconnections during operation.

(3) The maximum distance between nodes is slightly shorter for connectors

with crimp-cut cables compared to connectors assembled with adhesive. Also, the maximum distance is reduced due to extension loss when Inline Adapters are used to extend cables.

The following adhesive-polished Optical Fiber Cables are available with Connectors already attached.

Specifications Length Model

Optical Fiber Cable Connectors:

S3200-COCF2011

2 m S3200-CN201-20-20 5 m S3200-CN501-20-20 10 m S3200-CN102-20-20 15 m S3200-CN152-20-20 20 m S3200-CN202-20-20 Over 20 m S3200-CN-20-20

(Specify length (m) when ordering.)

Cable Connections Section 2-4

Specifications Length Model

Optical Fiber Cable Connectors:

S3200-COCF2011

S3200-COCF2511

Optical Fiber Cable Connectors:

S3200-COCF2511

Note (1) The cables listed above are black and have power supply lines and ten-

sion members, although the power supply lines aren’t used in the SYSMAC LINK Network.

(2) All of the cables listed above are attached to the connectors with adhe-

sive.

(3) Special training is required to assemble Optical Fiber Cables and connec-

tors with adhesive.

2 m S3200-CN201-20-25 5 m S3200-CN501-20-25 10 m S3200-CN102-20-25 15 m S3200-CN152-20-25 20 m S3200-CN202-20-25 Over 20 m S3200-CN-20-25

(Specify length (m) when ordering.) 2 m S3200-CN201-25-25 5 m S3200-CN501-25-25 10 m S3200-CN102-25-25 15 m S3200-CN152-25-25 20 m S3200-CN202-25-25 Over 20 m S3200-CN-25-25

(Specify length (m) when ordering.)

Optical Fiber Cable

Use the following accessories to assemble and test Optical Fiber Cables.

Accessories

Optical Fiber Assembly Tool

Optical Power Tester S3200-CAT2700 With S3200-CAT2702 Head Unit and

Master Fiber Set S3200-CAT2001H One meter cable for use with the

Note Use the CAK-0057 (made by Sumitomo Electric Industries, Ltd.) to assemble

the S3200-COCF2071/2571 Connectors. (Production of the S3200-CAK1062 Assembly Tool has been stopped.) The S3200-COCF2071/2571 Connectors can be assembled using the S3200-CAK1062 by adding the JRFK-57PLUS (made by Sumitomo Electric Industries, Ltd.).

This manual does not provide details on Optical Fiber Cable preparation. For details, refer to the instructions provided with the CAK-0057 or S3200CAK1062 Assembly Tool.

Optical Fiber Cable Connections

All of the nodes in an Optical SYSMAC LINK Network are connected in a line (daisy-chain configuration) with H-PCF Optical Fiber Cable.

The nodes can be connected in any order, but be sure to begin with the upper connector (SL1) of the highest node in the network and connect to the lower connector (SL2) in the next lower node, as shown in the following diagram.

Name Model Specifications

CAK-0057 (See note.)

Crimp-cut tool for the S3200-COCF2071/2571 Connectors

adapter for the S3200-COCF2071/ 2571 and S3200-COCF2011/2511 Connectors

S3200-CAT2702 Head Unit

Cable Connections Section 2-4

Also be sure to cover the unused connectors on the highest and lowest nodes in the network with the provided Optical Connector Covers.

Optical Connector Cover

(Included)

Optical Connector Cover

(Included)

← Higher Lower →

Note (1) Always use the specified Optical Fiber Cables.

(2) The maximum distance between nodes depends on the method used to

attach the connector to the cable.

Installing Connectors

A special connector is used to connect the Optical Fiber Cable to the SYSMAC LINK Unit.

This manual does not provide details on Optical Fiber Cable preparation. Observe the following precautions when connecting the Optical Fiber Cables.

• Always turn OFF the PLC power supply before connecting Optical Fiber Cables.

• Special tools are required to attach Optical Fiber Cables to the connectors. The cable may disconnect from the connector if the proper tools and methods are not used during cable assembly.

• Insert the connectors completely and always check that the connectors are locked before starting operation.

• If a connector becomes disconnected, the node will be unable to communicate with other nodes in that part of the network. The network will be divided into two and communications with the remaining nodes will be unreliable. Be sure not to remove connectors during communications.

Transmission possible but unstable.

Isolated (Transmission not possible)

• Do not pull on the Optical Fiber Cable too forcefully. The maximum tension that can be applied to the cord is 10 kg and the maximum tension that can be applied to the cable is 50 kg.

Cord

Cable

• Do not bend the cable too sharply. The minimum radius for bends is 10 cm.

Cable Connections Section 2-4

• To prevent the Optical Fiber Cable from being pulled too forcefully, always use the cable securing bracket and provide space behind the Unit as shown in the following diagram. Do not exceed the maximum tension for the cord and cable:

Cord: 0 kg (Do not apply any tension.) Cable: 5 kg

Cord Cable

200

• Do not place objects on top of the Optical Fiber Cable. The maximum pressure that can be placed on the cord and cable is as follows:

Cord: 30 kg/10 cm Cable: 50 kg/10 cm

• Inspect the connector before installing it.

Connection Procedure Use the following procedure to connect Optical Fiber Cables to a Unit.

1,2,3... 1. Tighten screws in the mounting brackets so that the through-holes on the

terminal are on the top and bottom and then affix hexagonal nuts from the opposite side of the terminal.

2. Insert bushing to the mounting bracket and secure the Unit with screws.

3. Pass the tension member through the through-holes, and tighten the terminal screws to affix the tension member.

4. Affix the cable to the mounting bracket so that it is clamped by the bracket. Two cables can be attached at the same time.

5. Move the cable connector so that the loose ends are on the left-hand side, and insert the Unit’s optical connector as far as it will reach.

2-4-3 Backup Power Supply

Each node requires a backup power supply for the node bypass function. Several nodes can be connected to a single power supply or each node can be connected to an independent power supply.

Be sure that the backup power supply is providing sufficient current and voltage at the Unit’s connector.

Backup Power Supply Specifications

The following table shows the input specifications required for backup power supply to SYSMAC LINK Units. Be sure that the backup power supply being used meets these specifications. (We recommend the OMRON S82K-series Power Supplies.)

Voltage 24 V DC Allowed voltage fluctuation 20.4 to 26.4 V DC (24 V DC –15% to +10%)

Item Specification

Cable Connections Section 2-4

Item Specification

Current consumption 200 mA max. at 24 V DC (per node) Inrush current 2.5 A max. (24 V DC, 5-ms rise time)

Note (1) A label has been placed over the upper surface of the SYSMAC LINK Unit

to prevent wire cuttings from entering the Unit. When wiring the backup

power supply, leave the label in place. (2) When wiring is complete, remove the label to avoid overheating. (3) Use a power supply that is not connected to PLC operation, as in the case

of the node bypass function, for the backup power supply so that when

the power to the PLC is turned OFF, the backup power supply will contin-

ue. (4) Use a dedicated power supply for the backup power supply. Do not share

a power supply being used for I/O, motors, or control systems. (5) When two or more nodes are connected to a single backup power supply,

wire each node separately.

Backup power supply

Wrong

Backup power supply

Note Unlike the CV500-SLK11, the CS1W-SLK11 does not require an Auxiliary

Power Supply Unit for the node bypass function. Instead, directly connect a 24-VDC external power source as a backup power supply.

Attach crimp terminals to the power supply cable when connecting the backup power supply to the SYSMAC LINK Unit.

Crimp Terminals

Use an M3 crimp terminal, as illustrated below.

6.2 mm max. 6.2 mm max.

24 VDC

Backup power supply

Cable Connections Section 2-4

Recommended Crimp Terminals

Manufacturer Model Remarks Suitable wiring

Japan Crimp Terminals KK

MOLEX JAPAN CO., LTD.

V1.25-N3A Vinyl insulated

forked terminal

V1.25-MS3 Vinyl insulated

round terminal

VSY1.25-3.5L Vinyl insulated

forked terminal

RAV1.25-M3 Vinyl insulated

round terminal

Note (1) Always turn OFF the power to the PLC and the backup power supply be-

fore connecting the backup power supply cables.

(2) Separate the backup power supply wires from other power lines and high-

voltage lines to prevent noise.

(3) Always use a crimp terminal for wiring. Do not connect a wire that has

only been twisted directly to a terminal block.

(4) In the interests of safety, it is recommended that round crimp terminals

are used.

(5) When mounting the crimp terminal, always use the appropriate tools for

each crimp terminal and follow the appropriate installation procedures. Contact the crimp terminal manufacturer for details on the appropriate tools and procedures. Failure to use the appropriate tools and procedures could cause cables to break.

(6) Measure the length of peeled cable during installation according to the

crimp terminal used and make sure that the peeled length is not too long. Cover the compressed section of the crimp terminal and cable with vinyl

tape or heat-shrinking tube. (7) Be sure not to reverse the power supply polarity. (8) Tighten the screws on the terminal block firmly. The correct tightening

torque is 0.5 N

• m. If the screws are too loose, short-circuit, malfunction

or burning may result. (9) Do not pull backup power supply cables with excessive force.

(10) Do not bend backup power supply cables. (11) Do not place any object on top of backup power supply cables. (12) Supply power only after checking the wiring thoroughly.

range

0.25 to 1.65 mm (AWG #22 to #16)

0.3 to 1.65 mm (AWG #22 to #15)

SECTION 3

Basic Communications

A description of the token bus method of communications used in SYSMAC LINK Systems is described briefly in this section, as well as the basic settings necessary for operation.

3-1 SYSMAC LINK System Communications . . . . . . . . . . . . . . . . . . . . . . . . . . 34

3-2 Unit Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3-3 Setting Node Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3-4 Network Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3-5 Network Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3-6 Memory Areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3-6-1 Word Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3-6-2 Word Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

SYSMAC LINK System Communications Section 3-1

3-1 SYSMAC LINK System Communications

SYSMAC LINK Units communicate through the SYSMAC LINK Network, a token bus LAN. This section describes the token bus communications used in the SYSMAC LINK Network.

Token Bus Communications

In token bus communications, individual nodes are connected to a main trunk line as a common bus line, as shown in the figure below.

To avoid having two nodes attempt to transmit simultaneously, only one node has the right to transmit at a time. The right to transmit is held by the node that holds what is called the token, which is passed in sequence from node to node, beginning with the node with the lowest node address (the polling node, see below).

If the token is passed to a node that does not have data to transmit, the token is immediately passed to the node with the next higher node address. The node with the highest node address passes the token back to the node with the lowest node address. In this way, each node in the network has its turn to transmit data without interfering with other nodes.

Lowest node address

NodeNodeNodeNode

Connecting cable (trunk line)

NodeNode Node

Highest node address

Control sequence

Polling Node In a SYSMAC LINK Network there is one node, called the polling node, that

controls communications in the network. Normally, the Unit with the lowest node address is the polling node. If the polling node fails, the node with the next higher node address automatically becomes the polling node, preventing the whole network from failing.

Startup Node The node that starts the data link in a SYSMAC LINK Network is called the

startup node. The data link operates using the parameter settings in the DM Area at the startup node. With automatic allocation of link words, the DM parameter area settings are used, and with manual allocation, the common link parameters in the startup node are used.

Communications Cycle The token in a SYSMAC LINK Network is first passed from the polling node.

The token is passed in sequence from node to node by node address until it is finally returned to the polling node. One complete circuit around the network is known as a token cycle.

At the end of each token cycle, the polling node polls all of the nodes in the network to check whether any nodes have been added to or removed from the network. The updated information on the network is transmitted to all nodes. This polling and updating process is known as the polling cycle.

When the control cycle is completed, the polling node once again passes the token, beginning the next token cycle. Together the token cycle and control

Unit Number Section 3-2

cycle make up the communications cycle, and the time required for the communications cycle is known as the communications cycle time.

Communications cycle

Token cycle Polling cycle

Network Parameters The communications cycle time is one of the network parameters. The other

network parameters are the number of polled units, maximum number of frames, and the maximum node address. These parameters are transmitted from the polling node to the other nodes in the network. Refer to 3-5 Network Parameters for details on the network parameters.

Refresh Cycle Time Data is constantly being refreshed in the data link words between the SYS-

MAC LINK Unit and the CPU Unit while the data links are operating. By refreshing data, the CPU Unit sends local node data to the SYSMAC LINK Unit, and receives data from other nodes from the SYSMAC LINK Unit. The interval between data refreshing is called the refresh cycle time. The refresh cycle time can be monitored using the Support Software.

Communications cycle

Token cycle Polling cycle

3-2 Unit Number

Up to four SYSMAC LINK Units can be mounted on a CS-series PLC and used to connect each Unit to a different SYSMAC LINK Network. Because the PLC incorporates bridge and gateway functions, these and other networks can exchange data via the CPU Unit. If more than one SYSMAC LINK Unit or other CPU Bus Unit is mounted on a single PLC, however, each Unit needs a unit number for identification.

Setting Use the rotary switches on the front panel to set the unit number.

Unit No. 6 Unit No. 12 (hexadecimal C)

Setting Value Range A total of 16 SYSMAC LINK Units and/or other CPU Bus Units can be

mounted on a single PLC. Of these, up to four can be SYSMAC LINK Units. The unit number settings range is from 0 to F Hex.

Note (1) Each Unit connected to the same PLC must have a unique number.

(2) Turn OFF the PLC when setting the rotary switches. (3) If the unit number of any node has been changed, the I/O table on the

PLC must be generated again and that node must be turned ON after all

other nodes have been turned ON.

3-3 Setting Node Address

In token bus communications used in the SYSMAC LINK Network, the node addresses make a logical ring around which the token is passed. The logical ring of node addresses takes the place of the actual physical ring used in some other networks. Consequently, proper setting of the node addresses is essential to network operation.

Network Address Setting Section 3-4

Settings Node address switches determine the node address. The left switch sets the

ten’s digit; the right switch sets the one’s digit. The node address must be between 01 and 62. Each SYSMAC LINK Unit in a Network must have a unique node address.

Node number: 53

Note (1) Always turn OFF the PLC power before setting or changing node ad-

dress.

(2) If the node address set on the Unit is outside of the allowed range (01 to

62), a communications error will occur and the red ERC indicator will light on the Unit.

(3) Each Unit in the network must have a unique node address, so be sure

not to use the same address on more than one Unit.

(4) The token is passed from node to node according to node addresses, so

the more dispersed the node addresses are, the greater distance the token has to travel. In optical fiber systems, the communications cycle time depends on the distance the token has to travel, so set node addresses in the same order as the nodes’ positions in the network if possible.

(5) If you change a node address, start up the changed node last, and have

it participate in the network last.

Node number: 7

3-4 Network Address Setting

It is necessary to set a network address on each PLC for data exchange between networks. By setting the network address, the local node can exchange data with a destination node even if there is another network between them.

Setting Use the Support Software to set the network address in the routing tables in

the CPU Unit (refer to 5-2 Routing Tables). Refer to the Support Software operation manuals for setting details.

Setting Range A system can include up to 127 networks. The setting range of the network

address is thus 1 to 127 (decimal). (Network address 0 is used to indicate the local network.)

3-5 Network Parameters

The operation of the SYSMAC LINK Network is determined by the network parameters. Network parameters are set with Peripheral Devices, such as the Support Software, and are automatically backed up within the SYSMAC LINK Unit. The network parameters stored in the polling node are used in actual system operation; the network parameters in other Units are ignored.

Network Parameters The following table shows the network parameters, their default values, and

the ranges within which the parameters can be set by the user. Default values and setting ranges are in decimal.

Network parameter Default value Setting range

Communications cycle time Automatic 5 to 255 Maximum node address 62 2 to 62

Network Parameters Section 3-5

Network parameter Default value Setting range

Number of polled units per communications cycle

Maximum number of frames per communications cycle

Communications Cycle Time

This parameter sets a timer that fixes the length of the communications cycle to the specified time. The timer operates only when the data link is in operation. Set the communications cycle time when setting the data link table’s common link parameters.

When the timer is in operation, the communications cycle time is fixed at the specified value, independent of the number of events that occur. Refer to 4-11 Data Link Characteristics for the formula needed to calculate the communications cycle time when the data link is set for automatic generation.

Maximum Node Address

This parameter sets the maximum node address that a node can have and still be a part of the network. Nodes with node addresses greater than the maximum node address will not be polled, and therefore will not participate in network communications. This eliminates unnecessary polling of units with node addresses above the maximum, and thus reduces the time required for communications.

4 1 to 62

10 5 to 255

Setting Network Parameters

Note Set the maximum node address above the highest node address set on the

SYSMAC LINK Units currently connected unless you specifically want to exclude one or more nodes from system operation.

Number of Polled Nodes

This parameter determines how many nodes will be polled by the polling node during a polling cycle. Setting a high number of Units increases the communications cycle time, but reduces the time required to recognize that nodes have been removed from or added to the network.

Maximum Number of Frames

This parameter determines how many event transmissions can take place during a token cycle when data links are operating. With the default value of 10 frames, up to 4 event transmissions can be issued.

Event transmissions include instructions such as SEND(90), RECV(98), or CMND(490), as well as processes such as remote monitoring and remote programming from the Support Software.

Setting a high number of frames increases the communications cycle time, while setting a low number will cause errors because of restrictions on event transmissions when the data link is operating. Increase the number of frames by three for each additional event transmission if data links are operating.

Network parameters are set from the Support Software. Refer to the Support Software manual for details. Network parameters are enabled immediately after being set.

Note (1) Do not set network parameters while data links are operating.

(2) Set the maximum node address to a value greater than the maximum

node address used in the SYSMAC LINK Units connected to the network.

Memory Areas Section 3-6

3-6 Memory Areas

The CPU Bus Unit Area and part of the DM Area in the CPU Unit are used to write or read the status of the nodes and the data links of SYSMAC LINK Units. The data from the SYSMAC LINK Unit is written to the input words in these areas.

3-6-1 Word Allocations

The memory areas that are used to write or read the data will be allocated according to the unit number.

CPU Bus Unit Area Each CPU Bus Unit is allocated 25 words from between CIO 1500 and

CIO 1899 as follows:

Unit No. Words Unit No. Words

0 CIO 1500 to CIO 1524 8 CIO 1700 to CIO 1724 1 CIO 1525 to CIO 1549 9 CIO 1725 to CIO 1749 2 CIO 1550 to CIO 1574 10 CIO 1750 to CIO 1774 3 CIO 1575 to CIO 1599 11 CIO 1775 to CIO 1799 4 CIO 1600 to CIO 1624 12 CIO 1800 to CIO 1824 5 CIO 1625 to CIO 1649 13 CIO 1825 to CIO 1849 6 CIO 1650 to CIO 1674 14 CIO 1850 to CIO 1874 7 CIO 1675 to CIO 1699 15 CIO 1875 to CIO 1899

DM Area Each CPU Bus Unit is also allocated 100 words from between D30000 and

D31599 as follows:

Unit No. Words Unit No. Words

0 D30000 to D30099 8 D30800 to D30899 1 D30100 to D30199 9 D30900 to D30999 2 D30200 to D30299 10 D31000 to D31099 3 D30300 to D30399 11 D31100 to D31199 4 D30400 to D30499 12 D31200 to D31299 5 D30500 to D30599 13 D31300 to D31399 6 D30600 to D30699 14 D31400 to D31499 7 D30700 to D30799 15 D31500 to D31599

Memory Areas Section 3-6

3-6-2 Word Applications

The applications of the words in the CPU Bus Link Area and DM Area that are allocated to SYSMAC LINK Units are described in the following tables.

CPU Bus Unit Area The words allocated in the CPU Bus Unit Area to a SYSMAC LINK Unit are

used to access the status of the SYSMAC LINK System as shown in the following table.

I/O Word Bit Item Page

--- +0 0 to 15 Reserved by the system. --Inputs (from SYS-

MAC LINK Unit to CPU Unit)

+1 0 1: Network parameter error 129

1 1: Data link table error 129 2 1: Routing table error 129 3 1: Communications Unit (SYSMAC LINK Unit) setting error --4 to 6 Reserved by the system. --7 1: EEPROM error --8 1: Node address setting error 128 9 1: Node address duplication error 128 10 1: Network parameter disagreement error --11 1: Network controller error 12 to 14 Reserved by the system. --15 0: No error log record

+2 to +4 0 to 15 Network participation (1 bit per Unit for each of 62 Units)

+5 0 to 13

14 to 15 Reserved by the system. ---

+6 0 to 7 Local node address 35

8 to 15 Local network address 36

+7 0 to 7 Node address of polling node 34

8 to 15 Local unit number 35

+8 to +22 0 to 15 Data link status on each node using 4 bits per Unit for each of 62 Units:

+23 0 to 7

8 to 13 Node address of startup node (for data links) 15 Local Data Link Active Flag

+24 0 to 10 Reserved by the system. ---

11 0: No power supply

12 to 15 Reserved by the system. ---

1: Error log record(s) exists

0: Not participating 1: Participating

CPU Unit operating, CPU Unit error, communications error, no error (data links operating)

1: Local node data links active. 0: Local node data links not active.

1: Power being supplied (CS1W-SLK11 only)

128

Memory Areas Section 3-6

Network Participation Status

If a node is participating in a network, the bit corresponding to the node address will be ON. Node addresses (1 through 62) and their corresponding bits are listed in the following table. (Bits 14 and 15 of word +5 are always 0.)

Word: 1500 + (25 x Unit Number) + 2 to 5

12 11 10 9 876543210

Word

15 14 13

Bit

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

32+3 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48+4 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

-+5 - 6261605958575655545352515049

Note Even if the local node is disconnected from the network, only the bit corre-

sponding to the local node is turned OFF (i.e., the entire status area participating in the network is not turned OFF). While the local node is disconnected, the bits corresponding to the other nodes will not be refreshed, even if the participation status of other nodes changes.

Software Switches (D30000 + 100

CPU Bus Unit Settings Initialization (See note)

0: Do not initialize CPU Bus Unit Settings 1: Initialize CPU Bus Unit Settings

Polling Node/Polled Node Bit

0: Polling node 1: Polled node

Note Initializes the network parameters registered in the CPU Bus Unit Setting Area in the CPU Unit and

clears the data link tables.

× Unit Number)

Data link Star t Bit

Start: Changed from OFF to ON or already ON when power is turned ON Stop: Changed from ON to OFF

Data Link Mode

00: Manual 01: Automatic for CIO Area only 10: Automatic for DM Area only 11: Automatic for CIO and DM Areas

Number of Send Words per Node

CIO Area DM Area

00: 4 words 01: 8 words 10: 16 words 11: 32 words

8 words 16 words 32 words 64 words

SECTION 4

Data Links

The operation of data links, procedures required to establish data links, and methods of monitoring data link operations are described in this section.

4-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4-2 Data Link Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4-3 Data Link Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4-4 Data Link Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4-4-1 Rotary Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4-4-2 Specifying Data Link Mode and Number of Data Link Words . . . . 45

4-4-3 Data Link Start/Stop Bit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4-5 Creating Data Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4-5-1 Automatic and Manual Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4-5-2 Automatic Data Link Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4-5-3 Manually Generating Data Link Tables . . . . . . . . . . . . . . . . . . . . . . 48

4-5-4 Table Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4-6 Data Link Area Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4-6-1 Automatic Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4-6-2 Manual Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4-6-3 Refreshing Data Links with Automatic Settings . . . . . . . . . . . . . . . 51

4-6-4 Refreshing Data Links with Manual Settings . . . . . . . . . . . . . . . . . 52

4-7 Data Link Table Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4-8 Controlling Data Links. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4-8-1 DM Parameter Area Software Switches . . . . . . . . . . . . . . . . . . . . . 56

4-8-2 DATA LINK START/HALT Commands . . . . . . . . . . . . . . . . . . . . . 56

4-8-3 CX-Net in CX-Programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4-9 Data Link Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4-9-1 Data Link Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4-9-2 Word Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4-10 Data Link Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4-11 Data Link Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

4-11-1 Data Link Communications Cycle Time . . . . . . . . . . . . . . . . . . . . . 62

4-11-2 Data Exchange Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

4-11-3 Calculation Examples for Data Link I/O Response Times . . . . . . . 65

4-12 CX-Programmer Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

4-12-1 Overall Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

4-12-2 Data Link Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Introduction Section 4-1

4-1 Introduction

Data links can be created between PLCs or PLCs and computers in a SYSMAC LINK Network to exchange data. This data is transferred between interconnected PLCs automatically without requiring the use of normal I/O Units.

Words in the CIO and/or DM Areas are set aside as the data link words in each PLC that is in the data link. Some of the data link words are allocated to the local node and the rest are allocated to other nodes. Data can be written only to the words allocated to the local node. During data link refreshing, data written in the local node is transferred to corresponding words in other nodes’ memory areas. The result is that each PLC in the data link has a common data link area, the only difference being in the read/write permissions for the various words in it.

Data Link Tables The data link words in each PLC are defined by a data link table, which

includes both common link parameters and refresh parameters. The common link parameters define the words output by each node in the data link and are thus the same for all nodes, and the refresh parameters define the words input by each node and can thus be different for each node.

Data link tables can be generated automatically or manually. Automatic generation is accomplished simply by setting parameters in the DM Area. Manual generation is accomplished by setting specific data links from the CX-Net in CX-Programmer.

The following diagram shows the operation of a data link among four nodes in a network. This data link was generated manually.

Data link words

Data link table

Node 2 Node 5 Node 6 Node 8

Link Area Link Area Link Area Link Area

1000

1010

1030

1049

Refresh parameters (can differ from node to node)

1010

1020

1039

Refresh parameters (can differ from node to node)

1000

1020

1039

Refresh parameters (can differ from node to node)

Common link parameters (the same in all nodes)

1005

1015

1035

1054

Refresh parameters (can differ from node to node)

Data Link Specifications Section 4-2

Table Generation Data link tables can be generated automatically or manually. Data link tables

generated automatically are identical in all PLCs in the data link, with the words of the data areas listed below divided equally among 2, 4, 8, or 16 nodes. The number of words allocated to each node depend on the number of nodes linked and is given in 4-2-1 Specifications Ta bl e later in this section.

CIO Area CIO 1000 to CIO 1063 DM Area D00000 to D00127

Manual generation provides much greater flexibility in making data links among PLCs, but require that you manually input the data link tables. Manually generated data links can contain far more words and can use any part of the CIO Area and/or DM Area, as shown in the following table.

Area Data Link Area

CIO Area CIO 0000 to CIO 6143 DM Area D00000 to D32767

Note Use Ver. 1.2 Service Pack 1 of the CX-Programmer. Settings for CS-series

SYSMAC LINK Units cannot be made with earlier versions of the CX-Programmer.

Controlling Data Links Data links can be activated and deactivated by turning ON and OFF bit 00 of

the first CPU Bus Link Area word allocated to the SYSMAC LINK Unit in PLC memory, i.e., bit 00 of word D30000 + (100 x unit number).

4-2 Data Link Specifications

Basic specifications for data links are provided in the following table.

Item Description

Number of data link nodes 62 max., 2 min. Number of linked words per node CIO Area: 254 words max.

Maximum number of linked words in network

Automatically generated data links Set in DM Area parameters.

Manually generated data links Set from the CX-Net in CX-Programmer. Status Area (in CPU Bus Link

Area) Data link table backup CPU Bus Unit Setting Area inside CPU Unit

Data Link Allocations for Automatic Settings

Area Words allocated Number of words per node

CIO Area CIO 1000 to CIO 1063 32 16 8 4 DM Area D00000 to D00127 64 32 16 8

DM Area: 254 words max. 2,966 words

(918 words for any Network with one or more C200H PLCs)

(See following table)

CIO 1500 + (unit number x 25) + 8 to 23 (See following table)

(only for manually set data links)

2 nodes 4 nodes 8 nodes 16 nodes

Data Link Indicators Section 4-3

Status Area Words

Unit No. Words Unit No. Words

0 CIO 1508 to CIO 1523 8 CIO 1708 to CIO 1723 1 CIO 1533 to CIO 1548 9 CIO 1733 to CIO 1748 2 CIO 1558 to CIO 1573 10 CIO 1758 to CIO 1773 3 CIO 1583 to CIO 1598 11 CIO 1783 to CIO 1798 4 CIO 1608 to CIO 1623 12 CIO 1808 to CIO 1823 5 CIO 1633 to CIO 1648 13 CIO 1833 to CIO 1848 6 CIO 1658 to CIO 1673 14 CIO 1858 to CIO 1873 7 CIO 1683 to CIO 1698 15 CIO 1883 to CIO 1898

4-3 Data Link Indicators

The data link status can be checked using an indicator on the SYSMAC LINK Unit.

CS1W-SLK11 CS1W-SLK21

Name Condition Meaning

LNK Lit Data links are operating normally.

Note Refer to Setup and Activation in 4-10 Data Link Precautions for details.

4-4 Data Link Settings

The following settings are required to run data links.

4-4-1 Rotary Switches

Set the node address using the rotary switches on the front of the Unit. Refer to 3-3 Setting Node Address for details on setting the rotary switches.

Flashing Data links are not active due to data link table error. Rapid flashing Data link table communications cycle time is too short. Not lit Data links are not active.

Data Link Settings Section 4-4

4-4-2 Specifying Data Link Mode and Number of Data Link Words

Set the data link mode to either automatic settings or manual settings, and set the number of send words per node for automatic settings. These settings are made in the DM Parameter Area allocated to the SYSMAC LINK Unit.

Word: D30000 + (100 x Unit number)

Bit

Data Link Mode

00: Manual 01: Automatic with CIO Area only 10: Automatic with DM Area only 11: Automatic with CIO and DM Areas

Number of Words per Node (automatic settings only)

CIO Area

00: 4 words 01: 8 words 10: 16 words 11: 32 words

"---": Other settings

DM Area

8 words 16 words 32 words 64 words

Note (1) Set data link tables in each SYSMAC LINK node on the network when

specifying manual data link tables. (2) The data link mode (manual settings or automatic settings) and the data

link system are determined by the data link settings for the startup node. (3) Be sure to set the data link mode (manual settings) and the data link table

in the DM parameter area of the startup node when using manual set-

tings. (4) Be sure to set the data link mode (automatic settings) and the number of

data link words in the DM parameter area of the startup node when using

automatic settings. (5) The data links will not operate unless the settings are correct.

4-4-3 Data Link Start/Stop Bit

You can start and stop the data links by turning ON and OFF the bit in the first word in the startup node in the DM Area allocated in the CPU Bus Unit. This bit is in the DM Parameter Area allocated to the SYSMAC LINK Unit.

Words: D30000 + (100 x unit number)

Bit

!Caution Check the following before starting the data links. If the data link table settings

or the DM parameter settings are unsuitable, there is a risk of injury due to unanticipated operation of the system.

"---": Other settings

Data Link Start/Stop Bit

The data links will start when the bit is turned ON or if it is already ON when the power is turned ON.

The data links will be stopped when the bit is turned OFF.

Creating Data Links Section 4-5

a. Manual settings: Check that suitable data link tables have been set in

each data link node. Check that data link tables have been deleted for nodes not participating in the data links.

b. Automatic settings: Check that suitable DM parameters have been set

in the data link startup node.

!Caution Even if the data link table settings or the DM parameter settings are suitable,

check that there will be no adverse effects on the controlled equipment before starting or stopping the data links.

4-5 Creating Data Links

Data link tables store information required to run data link functions. The data link area is created, and data is exchanged, based on the data link tables. With manual settings, data link tables are backed up in the settings area in the words allocated to SYSMAC LINK Unit as a CPU Bus Unit in the CPU Unit.

Note Data link areas must be continuous in the CIO Area or the DM Area. You can-

not make settings which leave unused words between the data link areas in either the CIO Area or the DM Area.

4-5-1 Automatic and Manual Settings

• Automatic settings: Data link tables created automatically from the DM parameter area settings.

• Manual settings: Data link tables set using Support Software.

Select either automatic or manual generation by specifying the data link mode in the DM parameter area allocated to the SYSMAC LINK Unit in the DM Area.

The differences between manually and automatically set data links are outlined in the following table.

Item Automatic setting Manual setting

Data link mode setting in DM parameter area

(D30000 = 100 x unit No.)

Number of linked words All nodes have the same

Linkable words The following words are

Number of linkable nodes The number of nodes

Using CIO Area only Bit 5: 0, bit 4: 1

Using DM Area only Bit 5: 1, bit 4: 0

Using CIO Area and DM Area Bit 5: 1, bit 4: 1

number of linked words.

automatically used: CIO 1000 to CIO 1063

D00000 to D00127

linked and the node addresses are automatically set depending on the number of words set per node.

Bit 5: 0 Bit 4: 0

The number of words read and the number of words written can be set independently for each node.

Any of the words in the CIO and DM Areas can be linked.

Data links can be set for any portion or all of the nodes (max.: 62).

Creating Data Links Section 4-5

4-5-2 Automatic Data Link Tables

Settings To automatically generate data link tables, the data link mode in the CPU Unit

DM Area parameters must be set for automatic generation and the numbers of words per node in each of the CIO and DM Areas must be set. The data link mode can be set to CIO Area only, DM Area only, or CIO and DM Areas. You can select the number of send words to each node using the data link word settings.

Allocated Words The words allocated to each node for the various word settings are given in

the following table. DM Parameter Area (D30000 + 100 x unit number)

Automatic data link mode settings Words per node

Bit 5: 0

Bit4: 1

Bit 5: 1 Bit 4: 1

CIO Area

words*

1000 to 1003 D00000 to D00007 Node 1 Node 1 Node 1 Node 1 1004 to 1007 D00008 to D00015 Node 2 1008 to 1011 D00016 to D00023 Node 3 Node 2 1012 to 1015 D00024 to D00031 Node 4 1016 to 1019 D00032 to D00039 Node 5 Node 3 Node 2 1020 to 1023 D00040 to D00047 Node 6 1024 to 1027 D00048 to D00055 Node 7 Node 4 1028 to 1031 D00056 to D00063 Node 8 1032 to 1035 D00064 to D00071 Node 9 Node 5 Node 3 Node 2 1036 to 1039 D00072 to D00079 Node 10 1040 to 1043 D00080 to D00087 Node 11 Node 6 1044 to 1047 D00088 to D00095 Node 12 1048 to 1051 D00096 to D00103 Node 13 Node 7 Node 4 1052 to 1055 D00104 to D00111 Node 14 1056 to 1059 D00112 to D00119 Node 15 Node 8 1060 to 1063 D00120 to D00127 Node 16

Bit 5: 1 Bit 4: 0

DM Area words

(see note)

Bit 7: 0 Bit 6: 0

CIO:

4 Wds,

DM:

8 Wds

Bit 7:0

Bit 6: 1

CIO:

8 Wds,

DM:

16 Wds

Bit 7: 1 Bit 6: 0

CIO:

16 Wds,

DM:

32 Wds

Bit 7: 1 Bit 6: 1

CIO:

32 Wds,

DM:

64 Wds

Note When using a data link that combines C-series SYSMAC LINK Units, CS-

series SYSMAC LINK Units, and CVM1/CV-series SYSMAC LINK Units, LR 00 to LR 63 in C-series PLCs correspond to CIO 1000 to CIO 1063 in CS/CVseries PLCs and DM 0000 to DM 0127 correspond to D00000 to D00127.

Creating Data Links Section 4-5

4-5-3 Manually Generating Data Link Tables

You can manually set the data link words by setting D30000 + 100 x unit number, bit 5 and bit 4 to OFF. The data links are set in the DM parameter area allocated to the SYSMAC LINK Unit as a CPU Bus Unit.

The manual settings, made with the CX-Net in CX-Programmer, are as follows:

Item Contents

Common link parameters

Refresh parameters

Communications cycle time Set the data link communications cycle time.

Select automatic or manual setting. Manual setting range: 5 to 255 ms

Local node send size

PLC type Select “CS” when using a CS-series SYSMAC LINK Unit.

Data link start address

Refresh node order Set in order the node addresses with which the local node will refresh data,

CIO Area Set the CIO Area local node send size in

words. Setting range: 0 to 254 words.

DM Area Set the DM Area local node send size in

words. Setting range: 0 to 254 words.

If using CX-Programmer Ver. 1.2 Service Pack 1, set the CV/CVM1. (If the CV/CVM1 is set, then only the ranges supported by the CVM1/CV-series PLCs can be set.)

CIO Area Set the start address in the CIO Area data link area for the local node.

Setting range: CIO 0000 to 6143

DM Area Set the start address in the DM Area data link area for the local node.

Setting range: D00000 to D32767

starting with the data link start addresses set above. If the address of the local node is set, it will send the specified word data to

other nodes. If the address of another node is set, the local node will receive the data sent by that node. For example, if you enter 3, 2, 1 as the refresh order, the node addresses will be allocated in the order 3, 2, 1, starting from the start address. If the local node address is 1, it will receive data from node 3, then from node 2, and finally, it will send data itself).

Always include the local node in the refresh node order. Data will not be received from the local node by another other node if the local node is not specified.

Note If 0 is set, the local node

will not send data (i.e., it will receive only).

4-5-4 Table Backup

Note Data link tables are set in the CPU Bus Unit Settings Area of the CPU Unit. If

For settings using CX-Net, refer to 4-12 CX-Programmer Procedures. When using a data link that combines C-series SYSMAC LINK Units, CS-

series SYSMAC LINK Units, and CVM1/CV-series SYSMAC LINK Units, set the CIO Area data link words bearing in mind that the C-series data links have a maximum of 64 words from LR0 to LR63.

The data link area must be continuous in the CIO Area and in the DM Area.

Data link tables are automatically stored up in the CPU Bus Unit Settings Area of the CPU Unit of the SYSMAC LINK Unit involved if backup is specified from the Support Software. It is advisable, however, for common link and refresh parameters to be backed up for safety. Back up using the Support Software. For details, refer to the Support Software operation manuals.

the CPU Unit is replaced or if the unit number or node address of a SYSMAC LINK Unit is altered, it is necessary to set the data link tables again.

Data Link Area Allocations Section 4-6

4-6 Data Link Area Allocations

Data link area allocations when the data link functions are started up are carried out as shown below, depending on whether the startup node data link table has been set automatically or by the user.

4-6-1 Automatic Settings

All nodes are allocated the same data link area depending on the number of link words set in the startup node. When automatic allocations are made, the settings in nodes other than the startup node are invalid. Send word data for each node is sent to the receive words allocated to the same memory area words at the other nodes, and stored there. The shaded areas in the following diagram indicate the send words for each node.

Node 1

(CIO Area)

4-6-2 Manual Settings

The data link areas can be allocated as described in this section by using the refresh parameter settings for each node.

Identical Allocations for All Nodes

Node 1 Node 3 Node 5 Node 7

When editing data link table refresh parameters, set the same refresh parameters for all nodes. (Create refresh parameters for each node using the Support Software, even if the allocations are the same for all nodes. A copy function is supported that will make identical settings easy.)

1000 to 1015

1016 to 1031

1032 to 1047

1048 to 1063

Node 2

(CIO Area)

1000 to 1015

1016 to 1031

1032 to 1047

1048 to 1063

Node 3

(CIO Area)

1000 to 1015

1016 to 1031

1032 to 1047

1048 to 1063

Node 4

(CIO Area)

1000 to 1015

1016 to 1031

1032 to 1047

1048 to 1063

(Node 1 data)

(Node 2 data)

(Node 3 data)

(Node 4 data)

CIO Area CIO Area CIO Area CIO Area

Data Link Area Allocations Section 4-6

Different Allocations for Each Node

To limit receiving from specified nodes and send only or receive only from specified nodes, change the refresh parameters for each node. In the following example, node 5 does not receive data from node 6, and node 6 does not receive data from node 2. Also, node 8 only receives data.

Node 2 Node 5 Node 6 Node 8

CIO Area CIO Area CIO Area CIO Area

DM Area DM Area DM Area DM Area

Note The send area for node 8 has specified 0 for both the CIO Area and DM Area

Creating Two or More Data Link Groups in One Network

in the common link parameters.

Only nodes with refresh parameters will participate in the data links. Although the node order in the manual settings can be changed as you wish,

the Data Link Area must be created in continuous areas.

The common link parameters are the same for each network. Consequently, multiple data link groups cannot be created in a SYSMAC LINK Network. Virtual data link groups, however, can be created using the refresh parameters.

As shown below, if you divide the groups and set the send and receive words for the nodes within each group, you can set multiple data link groups, as shown in the following diagram.

Data Link Area Allocations Section 4-6

It is still necessary to set the total data link words for group 1 and group 2 to within the maximum number of link words (2,966 words).

Group 1

Node 1 Node 2

CIO Area CIO Area CIO Area CIO Area

Node 3 Node 4

Group 2

4-6-3 Refreshing Data Links with Automatic Settings

Data link refreshing with automatic settings is carried out for all nodes in the data link areas that have been specified.

In the following example, only nodes 2, 4, 5, and 6 are participating in the data links. Nodes 1, 3, 7, and 8, however, will also be refreshed and words for them cannot be used for other applications. If no data is received, nodes 1, 3, 7, and 8 are refreshed with 0.

System Configuration

Node 2 Node 4 Node 5 Node 6

Refreshing for the above setup will be as shown below:

CIO Area

Node 1

Node 2

Node 3

Node 4

Node 5

Node 6

Node 7

Node 8

1000 to 1007

1008 to 1015

1016 to 1023

1024 to 1031

1032 to 1039

1040 to 1047

1048 to 1055

1056 to 1063

Refreshed.

Note When using the SYSMAC LINK Units listed below, the node areas outside of

the node address allocated the lowest word addresses (node 2 in the above example) and the node allocated the highest word addresses (node 6 in the above example) are not refreshed (nodes 1, 7, and 8 in the above example), and can be used for other applications in the CPU Unit of these SYSMAC LINK Units.

• CVM1/CV-series SYSMAC LINK Unit (CV500-SLK11/21)

• C200HX/HG/HE SYSMAC LINK Unit (C200HW-SLK13/14/23/24)

Data Link Area Allocations Section 4-6

• C1000H/C200HF/C2000H SYSMAC LINK Unit (C1000H-SLK11/21-V1)

4-6-4 Refreshing Data Links with Manual Settings

When manual settings have been made, data link areas will be refreshed for all nodes specified in the refresh parameters.

In the following example, only nodes 3, 4, 6, and 7 are participating in the data links. Nodes 1, 2, 5, and 8, however, will also be refreshed and words for them cannot be used for other applications. If no data is received, nodes 1, 2, 5, and 8 are refreshed with 0.

Node 3 Node 4 Node 6 Node 7

CIO Area

0500

0510 0515 0520

0530

0535

0545 0550

0555

Data Link words for node 3

Node 5

Node 7 Node 3

Node 6

Node 8

Node 4

Node 1 Node 2

Range where the data is refreshed

Note When using the SYSMAC LINK Units listed below, the node areas outside of

the node allocated the lowest word addresses (node 7 in the above example) and the node allocated the highest word addresses (node 4 in the above example) are not refreshed (nodes 1, 2, and 5 in the above example), and can be used for other applications in the CPU Unit of these SYSMAC LINK Units.

• CVM1/CV-series SYSMAC LINK Unit (CV500-SLK11/21)

• C200HX/HG/HE SYSMAC LINK Unit (C200HW-SLK13/14/23/24)

• C1000H/C1000HF/C2000H SYSMAC LINK Unit (C1000H-SLK11/21-V1)

Data Link Table Example Section 4-7

4-7 Data Link Table Example

In this example, the refresh parameters differ from node to node, so the data link tables will also differ from node to node. There are four nodes in the network (2, 5, 6, and 8), but some nodes will not receive data from all other nodes. The settings for the common link and refresh parameters are shown after the data flow.

Node 5Node 2 Node 6 Node 8

CIO Area

CIO Area CIO Area CIO Area CIO Area

1000

1010

1025

1029

D00000

D00010

D00020

D00025

D00029

1000

1010

DM Area DM Area DM Area DM Area

1025

1029

D00020

D00030

D00040

D00044

1005

1020

1024

D00000

D00010

D00014

Words written by local node Words read by local node

1010

1015

1025

1039

D00000

D00005

D00015

D00025 D00029

In this example, node 5 does not receive data from node 8, and node 6 does not receive data from node 2. Also, node 8 only receives CIO Area data from the other nodes

Create the data link tables for each participating node using CX-Net in CXProgrammer. The following settings are required.

• Local node send size

• PLC type

• Local node data link start address

• Refresh node order

Data Link Table Example Section 4-7

Example of Node 2 Settings

Node 2 Table

Item Setting

Node address Local node address: 2 Common link

parameters

Refresh parameters

Number of words in CIO Area

Number of words in DM Area

PLC type Select “CV/CVM1” Start word CIO CIO Area local node data link start address:

DM DM Area local node data link start address:

Refresh nodes Node refresh order: 2, 5, 6, 8

CIO Area local node send size: 10 words

DM Area local node send size: 10 words

CIO 1000

D00000

Node addresses are listed in order with the starting node address first. Because here the local node is listed first, node 2 will first send data and then received data in order from nodes 5, 6, and 8.

Note When setting data link tables for CS-series SYSMAC LINK Units with CX-Pro-

grammer Ver. 1.2 (Service Pack 1), set the PLC type to CV/CVM1. With CXProgrammer Ver. 2.0 or later, it is possible to set a CS-series PLC type.

Setting Tables for Other Nodes

Node 5 Table

Node address Local node address: 5 Common link

parameters

Item Setting

Number of words in CIO Area

Number of words in DM Area

CIO Area local node send size: 15 words

DM Area local node send size: 10 words

Controlling Data Links Section 4-8

Item Setting

Refresh parameters

Node 6 Table

Node address Local node address: 6 Common link

parameters

Refresh parameters

Node 8 Table

Node address Local node address: 8 Common link

parameters

Refresh parameters

PLC type Select “CV/CVM1” Start word CIO CIO Area local node data link start address:

DM DM Area local node data link start address:

Refresh nodes Node refresh order: 2, 5, 6

Item Setting

Number of words in CIO Area

Number of words in DM Area

PLC type Select “CV/CVM1” Start word CIO CIO Area local node data link start address:

DM DM Area local node data link start address:

Refresh nodes Node refresh order: 5, 6

Item Setting

Number of words in CIO Area

Number of words in DM Area

PLC type Select “CV/CVM1” Start word CIO CIO Area local node data link start address:

DM DM Area local node data link start address:

Refresh nodes Node refresh order: 6, 2, 5, 8

CIO 1000

D00020

CIO Area local node send size: 5 words

DM Area local node send size: 5 words

CIO 1005

D00000

CIO Area local node send size: 0 words (nothing set)

DM Area local node send size: 5 words

CIO 1010

D00000

4-8 Controlling Data Links

It is necessary to start the data links after finishing the data link settings. Starting the data links is carried out by any one of the following three startup operations. This is true for both manual settings and automatic settings.

• From the DM parameter software switches

• By sending a command

• By using the Support Software

Note (1) The data link mode (manual settings or automatic settings) and the data

link system are determined by the data link settings for the startup node.

(2) Be sure to set the data link mode (manual settings) and the data link table

in the DM parameter area of the startup node when using manual settings.

(3) Be sure to set the data link mode (automatic settings) and the number of

data link words in the DM parameter area of the startup node when using automatic settings.

(4) The data links will not operate unless the settings are correct.

Data Link Status Section 4-9

!Caution Check the following before starting the data links. If the data link table settings

or the DM parameter settings are unsuitable, there is a risk of injury due to unanticipated operation of the system.

(a) Manual settings: Check that suitable data link tables have been

set in each data link node. Check that data link tables have been deleted for nodes not participating in the data links.

(b) Automatic settings: Check that suitable DM parameters have

been set in the data link startup node.

!Caution Even if the data link table settings or the DM parameter settings are suitable,

check that there will be no adverse effects on the controlled equipment before starting or stopping the data links.

4-8-1 DM Parameter Area Software Switches

To start the data links, turn ON the Data Link Start/Stop Bit in DM parameter area in the CPU Unit of the node you wish to use as the startup node.

To stop the data links, turn OFF Data Link Start/Stop Bit in DM parameter area in the CPU Unit of a node participating in the data links.

The Data Link Start/Stop Bit can be turned ON and OFF using the user program, Support Software, or a Programming Console (refer to 4-4-3 Data Link Start/Stop Bit).

Word: D30000 + (100 x unit number)

Bit

Data Link Start/Stop Bit

The data links will start when the bit is turned ON, or if it is already ON when the power is turned ON.

The data links will be stopped when the bit is turned OFF.

Refer to Section 4-12 CX-Programmer Procedures or CX-Programmer Operation Manual for actual procedures.

4-8-2 DATA LINK START/HALT Commands

Data links can be started by sending a DATA LINK START command from a host computer or by executing the CMND(490) instruction to send the command from a PLC to the node you wish to use as the startup node.

Data links can be stopped by sending a DATA LINK HALT command from a host computer or by executing the CMND(490) instruction to send the command from a PLC to a node participating in the data links.

Note Refer to 6-4-1 DATA LINK START and 6-4-2 DATA LINK HALT for details.

4-8-3 CX-Net in CX-Programmer

−: Other settings

The data link can be started or stopped from the Support Software. Refer to CX-Programmer Operation Manual for details.

4-9 Data Link Status

The status of the local node and the nodes in the data links can be checked from the data link status area in the words allocated to the SYSMAC LINK Unit as a CPU Bus Unit.

Data Link Status Section 4-9

4-9-1 Data Link Status

The following status is indicated through the ON/OFF status of each bit. Refer to Word Configuration later in this section for specific allocations.

Item Bits Contents

Node status CPU Unit

Local node status

Network status

Operating Flag

CPU Unit Error Flag

Data Link Communications Error Flag

Data Link Active Flag

Local Node Data Link Active Flag

Startup Node Address

0, 4, 8, 12 ON if the CPU Unit of the node is operating (RUN or MONITOR

1, 5, 9, 13 ON if there is a fatal error in the CPU Unit of the node.

2, 6, 10, 14 ON if the node has a communications error and is not participating

3, 7, 11, 15 ON if the node has participated in the data links, even if only once.

Bit 15 of first allocated data link + 23 words

Bits 8 to 13 of first allocated data link word + 23

mode). OFF if the CPU Unit of the node is in PROGRAM mode.

• This flag is invalid if the Data Link Communications Error Flag for the node is ON.

• If a fatal error (including an FALS instruction) occurs during operation, this flag will remain ON.

• When using this flag in programming, take an AND of NO conditions of it and the local node’s Data Link Active Flag.

OFF when the CPU Unit of the node is operating normally.

• This flag is invalid if the Data Link Communications Error Flag for the node is ON.

• When using this flag in programming, take an AND of NO conditions of it and the local node’s Data Link Active Flag.

in the network (if the designated node is not sending data link data, communications from that node are assumed to be in error).

OFF when the CPU Unit for the node is operating normally (data link data is being sent continuously from the node).

• To check participation of a node in the data links, take an AND of a NO condition of this flag and a NC condition of the Data Link Active Flag.

OFF if the node has not yet participated in the data links.

• This bit turns ON once the node has participated in the data link, and remains ON even if the node is no longer participating (used to check system startup). Consequently, this flag cannot be used to check the current participation status of a node in the data links.

• When using this flag in programming, take an AND of NO conditions of it and the local node’s Data Link Active Flag.

ON if the node is participating in the data links. OFF if the node is not participating in the data links.

• If this flag is OFF, local communications will not be operating normally, so there is no guarantee that the status of other flags will be correct. Consequently, be sure to use this flag with an AND condition to check the status of other flags.

Startup node addresses 1 to 62 are stored as 1 to 3E Hex.

Note (1) The Data Link Active Flag is for checking the data link system. It is not

designed to check for data link errors. To check for data link errors, use the Data Link Communications Error Flag.

(2) The CPU Unit Run Flag, CPU Unit Error Flag, Data Link Communications

Error Flag, and Data Link Active Flag are valid only if the Local Node Data Link Active Flag is ON. Be sure to use the Local Node Data Link Active Flag with an AND condition when using any of these flags in programming.

Data Link Status Section 4-9

Program Example

Checking Data Link Participation Status

Checking for Data Link Errors in any Node

To check participation of any one node in the data links, take an AND of a NO condition of the Local Node Data Link Active Flag and the Communications Error Flag for each node as shown below.

Node A Data Link Active Flag

Node A: Participating in data links

Local Node Data Link Active Flag

Node A Communications Error Flag

Node B Communications Error Flag

Node n Communications Error Flag

Node B Data Link Active Flag

Node n Data Link Active Flag

Node B: Participating in data links

Node n: Participating in data links

To check for an error in any node in the data links, take an OR of a NC condition of the Local Node Data Link Active Flag and the Communications Error Flags for all nodes.

Data link error in one

Local Node Data Link Active Flag

Node A Communications Error Flag

or more nodes

Outputting Local Node Errors

Node B Communications Error Flag

Node n Communications Error Flag

The following example program section shows one way to output and error signal when data links stop for the local node.

Local Node Data Link Active Flag

Communications Error Flag

Bit indicating data link error in local node

Data Link Status Section 4-9

4-9-2 Word Structure

The following table shows the data link status in memory. The numbers within the table are in order of the nodes are set in the data link table (refresh parameters). These will correspond to the node addresses when using automatic settings.

The data link status area corresponds to the first word of the words allocated to the SYSMAC LINK Unit as a CPU Bus Unit +8 to +23.

Word: CIO 1500 + (25 x unit number) +8 to +23.

Word Bits 00 to 03 Bits 04 to 07 Bits 08 to 11 Bits 12 to 15

m+8 Link No. 1 Link No. 2 Link No. 3 Link No. 4 m+9 Link No. 5 Link No. 6 Link No. 7 Link No. 8 m+10 Link No. 9 Link No. 10 Link No. 11 Link No. 12 m+11 Link No. 13 Link No. 14 Link No. 15 Link No. 16 m+12 Link No. 17 Link No. 18 Link No. 19 Link No. 20 m+13 Link No. 21 Link No. 22 Link No. 23 Link No. 24 m+14 Link No. 25 Link No. 26 Link No. 27 Link No. 28 m+15 Link No. 29 Link No. 30 Link No. 31 Link No. 32 m+16 Link No. 33 Link No. 34 Link No. 35 Link No. 36 m+17 Link No. 37 Link No. 38 Link No. 39 Link No. 40 m+18 Link No. 41 Link No. 42 Link No. 43 Link No. 44 m+19 Link No. 45 Link No. 46 Link No. 47 Link No. 48 m+20 Link No. 49 Link No. 50 Link No. 51 Link No. 52 m+21 Link No. 53 Link No. 54 Link No. 55 Link No. 56 m+22 Link No. 57 Link No. 58 Link No. 59 Link No. 60 m+23 Link No. 61 Link No. 62 Bits 08 to 13: Address of startup

node (01 to 3E Hex) Bit 15: Local Data Link Active

Flag (ON: data link active; OFF: data link inactive)

The status of the bits allocated to each node is as follows: Bit 00, 04, 08, or 12: CPU Unit Operating Flag Bit 01, 05, 09, or 13: CPU Unit Error Flag Bit 02, 06, 10, or 14: Data Link Communications Error Flag Bit 03, 07, 11, or 15: Data Link Active Flag

The actual words allocated to each node address for data link status are shown in the following table.

Unit No. Words Unit No. Words

If the Local Node Data Link Active Flag (bit 15 of first word +23) is OFF, the data link status will be maintained as it was immediately before operation stopped. This may not be the same as the actual current status. When using

Data Link Precautions Section 4-10

the data link status, first check that the Local Node Data Link Active Flag is ON.

4-10 Data Link Precautions

Be sure to consider the precautions listed below when activating a data link or adding a node to an existing data link.

Setup and Activation Be sure to consider the precautions listed below when setting up and activat-

ing a data link.

1,2,3... 1. Refresh parameters must be set for each node in the data link when man-

ually generating data link tables. When a data link is started in a node that does not have a data link table, a data link table error will occur and the LNK indicator on that node will flash.

Refresh parameters must be set for all nodes that are included in the common link parameters in the startup node.

2. When data links are automatically generated, the node addresses of all the nodes in the data link must be in the range resulting from the Communication Unit Settings.

For example, if the settings divide the data link area among nodes number 1 to 4 (16 CIO words and 32 DM words), node 5 cannot participate in the data link.

3. With manual generation of data link tables, the node address of the local node must be included in the local refresh parameters.

4. If the beginning CIO or DM word in the refresh parameters is set too large, the CIO or DM Area will be exceeded during automatic allocation of link words.

If the data area is exceeded in the startup node, the LNK indicator on the startup node will flash and the data link will not operate. If the data area is exceeded in another node, the LNK indicator on that node will flash and it will not participate in the data link.

5. If the communications cycle time in data link tables is not generated automatically, and the setting for communications cycle time is too short, the CS-series SYSMAC LINK Unit (CS1W-SLK11/21) will not participate in the data links. The LNK indicator on the Unit will flash quickly, and a data link table communications cycle time settings error (021D Hex) will be registered in the error log. If this CS-series SYSMAC LINK Unit is the startup node for the data link, the data link will not be activated. The minimum possible communications cycle time setting can be obtained using the following calculation:

Minimum possible communications cycle time setting = Maximum node address + Number of polled Units + Number of Link Units + Total number of words in link area + 5.322 (ms)

Round up the result of this calculation to obtain a value in milliseconds.

× 0.01

× 0.25

× 0.161

× 0.01

Data Link Precautions Section 4-10

The data link table communications cycle time setting error registered in the error log will contain the following information:

Error code Detail code

1st byte 2nd byte

021D Hex Communications cycle

time set in the data link status (Unit: ms, 2-digit hexadecimal)

Minimum possible communications cycle time setting (Unit: ms, 2-digit hexadecimal)

The value in the 2nd byte of the detail code for 021D registered in the error history will be the minimum possible communications cycle time setting. For example, if the communications cycle time is set to 5 ms, and the LNK indicator starts flashing quickly, an error code of “021D 0512” will indicate that the minimum possible communications cycle time setting is 18 ms (12 Hex).

021D 0512

Error code

Minimum possible communications cycle time setting

Communications cycle time set

Adding Nodes Be sure to consider the precautions listed below when adding a node to active

data links.

1,2,3... 1. The node address of the node being added must be in the common link

parameters of the data links.

2. Set data link tables in the node being added. This is not necessary, however, when using automatic settings with the startup node, although it is necessary to include the node being added in the table of nodes participating in the data link in the automatic settings.

3. The common link parameters for the node being added must be the same as for the common link parameters already in operation. If the common link parameters for the node being added are different from the common link parameters already in operation, the node being added cannot participate in the data link. Refer to the example below.

4. If the communications cycle time for the data link tables is manually set when a CS-series SYSMAC LINK Unit is to be added to the data links, make sure that the value set is not below the minimum possible communications cycle time setting. For details of the values that can be set, refer to the previous section, Setup and Activation.

Data Link Characteristics Section 4-11

Adding a Node to a Data Link

Node 1 Node 2 Node 3 Node 4

1000

1010

1020

1030

1039

CIO Area

CIO Area CIO Area

1000

1010

1020

1030

1039

The number of send words for node 4 is set as 20 words in the common link parameters, but the number of send words is set as 10 words in the common link parameters for other nodes that are already operating. Consequently, node 4 will not participate in the data link network.

4-11 Data Link Characteristics

4-11-1 Data Link Communications Cycle Time

Data link servicing is given priority in SYSMAC LINK Systems. The communications time for a data link can thus be maintained as a constant, regardless of whether or not SEND(90), RECV(98), and CMND(490) are used. Fixing the data link communications time at a constant value fixes the data link I/O response time as well. The communications cycle time can be set either automatically (the default) or controlled externally.

Startup node

1000

1010

1020

1030

1039

Participating nodes

CIO Area

1000

1010

1020

1030

1049

Automatic Generation

When data link tables have been generated automatically, the communications time will be as follows for systems using coaxial cable:

No. of nodes Data link areas

CIO and DM Areas CIO Area only DM Area only

2 19 ms 17 ms 18 ms 4 19 ms 17 ms 18 ms 8 19 ms 18 ms 18 ms 16 19 ms 18 ms 19 ms

The communications time will be as follows for systems using optical fiber cable:

No. of nodes Data link areas

CIO and DM Areas CIO Area only DM Area only

2 21 ms 20 ms 21 ms 4 22 ms 20 ms 21 ms 8 22 ms 21 ms 21 ms 16 22 ms 21 ms 22 ms

Data Link Characteristics Section 4-11

Manual Generation

When data link tables have been generated manually, the communications cycle time can be set to a constant value or generated automatically. The communications cycle time can be set as a constant from 5 to 255 ms in increments of 1 ms using the Support Software to eliminate variations caused by noise or other factors. When the communications cycle time is not set as a constant, it will be generated automatically according to the equations below. Round the result of the calculation to the nearest millisecond.

Communications cycle time (coaxial cable systems) = Maximum node address

× 0.654 ms + number of polled units × 0.75 ms + number of Link Units × 0.056 ms + total number of words × 0.01 ms + 1.322 ms

Communications cycle time (optical fiber cable systems) = maximum node address ms + number of polled units + total number of words

Note The present and maximum values of the communications cycle time can be

monitored from the Support Software.

Example Calculations The examples below calculate the communications cycle time for both coaxial

and optical fiber cable with the following characteristics:

Maximum node address: . . . . . . 62

Maximum number of frames: . . .10

Number of polled units: . . . . . . . 4

Number of Link Units . . . . . . . . . 32

Total number of words . . . . . . . . 2,000

Communications cycle time (coaxial cable systems) =

× 0.085 ms + 10 × 0.654 ms + 4 × 0.75 ms + 32 × 0.056 ms + 2000 ×

0.01 ms + 1.322 ms

= 37.924 ms (38 ms after rounding) Communications cycle time (optical fiber cable systems) =

× 0.1115 ms + 10 × 0.77 ms + 4 × 0.75 ms + 32 × 0.056 ms + 2000 ×

0.01 ms + 1.322 ms

= 40.727 ms (41 ms after rounding)

× 0.085 ms + maximum number of frames

× 0.1115 ms + maximum number of frames × 0.77

× 0.75 ms + number of Link Units × 0.056 ms

× 0.010 ms + 1.322 ms

Note Data links might not operate correctly if the communications cycle time is set

to a value shorter than that generated automatically by the system. If the LNK indicator on the front of a CS-series SYSMAC LINK Unit (CS1W-SLK11/12) flashes quickly (at approximately 100-ms intervals), either automatically set the communications cycle time for the data link table, or manually set the communications cycle time to a longer value.

Changing the Communications Cycle Time

When the communications cycle time is generated automatically, it can be changed by changing the other network parameters on the Support Software. The default values and setting ranges of the other network parameters are shown in the table below.

Network parameter Default value Setting range

Maximum node address 62 2 to 62 Number of polled units 4 1 to 62 Maximum number of frames 10 5 to 255

Use the following formulas to calculate the change in the communications cycle time that results from a change in other network parameters. A positive

Data Link Characteristics Section 4-11

result indicates the communications cycle time has been decreased and a negative result indicates it has been increased. Round the result of the calculation to the nearest millisecond.

Change of the communications cycle time (coaxial cable systems) = (old maximum node address - new maximum) + (old maximum number of frames - new maximum) + (old number of polled units - new number)

Change of the communications cycle time (optical fiber cable systems) = (old maximum node address - new maximum) + (old maximum number of frames - new maximum) + (old number of polled units - new number)

Example Calculations The examples below calculate the change of the communications cycle time

for both coaxial and optical fiber cable when the other network parameters are changed as shown below:

Maximum node address: . . . . . .Changed from 62 to 16

Maximum number of frames: . . .Changed from 10 to 13

Number of polled units: . . . . . . .Changed from 4 to 5

Change of the communications cycle time (coaxial cable systems) = (62 – 16)

× 0.085 ms + (10 – 13) × 0.654 ms + (4 – 5) × 0.75 ms =

1.198 ms (1 ms after rounding) Change of the communications cycle time (optical fiber cable systems) =

(62 – 16)

× 0.1115 ms + (10 – 13) × 0.77 ms + (4 – 5) × 0.75 ms =

2.069 ms (2 ms after rounding)

× 0.085 ms

× 0.654 ms

× 0.750 ms

× 0.1115 ms

× 0.77 ms

× 0.75 ms

Note (1) If the maximum node address is set to a value less than the node address

of any nodes in the data link, those nodes will no longer be part of the data links.

(2) If the maximum number of frames is set too low, errors might occur during

the execution of operations such as SEND(90), RECV(98), and CMND(490) instructions, internode echo tests, and remote monitoring.

(3) Lowering the number of polled units will increase the delay between re-

setting a Unit or turning on its PLC’s power and its entrance into the network.

4-11-2 Data Exchange Timing

This section explains data link timing when using data links between SYSMAC LINK Units and a CPU Unit.

With a CS-series PLC, data exchange with the SYSMAC LINK Unit is performed by interrupt processing during the peripheral servicing time in the CPU Unit cycle time. Data exchange timing is as follows:

PLC processing

Basic processing

Execution

I/O refreshing Basic processing

PLC cycle time

CPU Bus Unit service

Interrupt processing for data exchange

Programming Device/Host Link service

Execution

If interrupt processing for data exchange is executed, the PLC cycle time will be lengthened by the time required for the interrupt processing.

Data Link Characteristics Section 4-11

Data Processing Time The time required for interrupt processing for data exchange (data processing

time) can be roughly estimated as shown in the following table.

Data link scale Equation for estimating data processing time

Data link is established for both areas 1 and 2 0.001 × Total number of data link words + 1.7 (ms) Data link is established for only area 1 or area 2 0.001 × Total number of data link words + 1.4 (ms)

4-11-3 Calculation Examples for Data Link I/O Response Times

In a SYSMAC LINK Unit data link, there is a slight time lag between the time input is received at one node in the link and the time output is made from another node in response to this input. This time lag is called the data link I/O response time. In this section, examples illustrating how to calculate the minimum and maximum I/O response times are given for the configuration shown below.

Coaxial cable

PLC 1

Input

Item Condition

Maximum node address 62 Number of polled nodes 4 Maximum number of frames 10 Number of participating nodes 8 Number of nodes participating in data links 8 Number of send words for area 1 8 words per node Number of send words for area 2 16 words per node Messages None

SYSMAC LINK Unit Node 1

LRXXX

Data link

Output

LRXXX

PLC 7

SYSMAC LINK Unit Node 7

OutputInput

The time required for each of the above items is given below:

Communications Cycle Time

62 × 0.085 + 10 × 0.654 + 4 × 0.75 + 8 × 0.056 + 192 × 0.01 + 1.322 = 18.5

≈ 19 ms (For details, refer to page 62.)

Input ON Response Time

This is the time between an input signal being received and the relevant input bit actually turning ON. Taken as 0 ms (min.) to 1.5 ms (max.) in this example.

Output ON Response Time

This is the time between the relevant output bit turning ON in the CPU Unit and the output signal actually being sent. Taken to be 0 ms (min.) to 1.5 ms (max.) in this example.

Data Link Characteristics Section 4-11

Scan Time for PLC 1

Taken to be 25 ms in this example.

Scan Time for PLC 7

Taken to be 10 ms in this example.

Maximum Data Link I/O Response Time

Input

(1)

Instruction execution

I/O processing

Data exchange

Scan time for PLC 1

(2)

Communications cycle

(3)

Scan time for PLC 7

Instruction execution

Input ON response time 1.5 ms Scan time for PLC 1 × 2 25 ms × 2 Communications cycle time × 2 19 ms × 2 Scan time for PLC 7 × 2 (see note a) below) 10 ms × 2 Output ON response time 15 ms Total (data link I/O response time) 124.5 ms

Output

The following delays occur at 1, 2, and 3 in the above diagram:

1,2,3... 1. The input bit turns ON just after a scan and so the time required for one

more scan elapses before the input is processed. Therefore a multiplication factor of 2 is applied to the scan time, as shown in the above table.

2. Processing for the input data is exchanged immediately after the right to transmit is transferred from PLC 1, and so the time required for communications is extended by approximately one communications cycle. Therefore a multiplication factor of 2 is applied to the communications cycle time, as shown in the above table.

3. Data is exchanged data with PLC 7 just after one scan and so the time required for one more scan elapses before output processing is performed. Therefore a multiplication factor of 2 is applied to the scan time, as shown in the above table.

Note (a) A multiplication factor of 3 (not 2) is applied to the scan time for

PLC 7 if it is longer than the communications cycle time.

(b) The I/O response time will also be affected by noise and other fac-

tors.

CX-Programmer Procedures Section 4-12

Minimum Data Link I/O Response Time

Input

Scan time for PLC 1

Communications cycle

Scan time for PLC 7

Output

Maximum transmission delay time

Input ON response time --Scan time for PLC 1 25 ms Communications cycle time --Scan time for PLC 7 10 ms Output ON response time --Total (data link I/O response time) 35 ms

4-12 CX-Programmer Procedures

This section describes the procedures from creation of data link tables to starting up data links using CX-Net in CX-Programmer.

Here, the procedure for CX-Net in CX-Programmer Ver. 1.2 (Service Pack 1) is given as an example. The operations, windows, and setting items may vary with the version of CX-Programmer.

4-12-1 Overall Procedure

If building SYSMAC LINK data links for the first time, make the settings using the following procedure. It is necessary to create data link tables if using manually set data links.

Note There is no need to create data link tables when using automatic settings. If

using automatically set data links, set the DM parameter areas (DM area words allocated to the SYSMAC LINK Unit as a CPU Bus Unit) using a Programming Console or the PLC Memory Window in CX-Programmer.

1,2,3... 1. Start CX-Net from the CX-Programmer by selecting Tools and then Net-

work Configuration Tool.

2. Open the CX-Server file (*.CDM) in CX-Net or create a new file in CX-Net by selecting Project and then Open in CX-Net.

3. Start the Data Link Editor to create the data link tables by selecting Data Link and then Editor.

• If creating the same data link tables in all nodes, start the Data Link Engineer from the Data Link Editor by selecting Table and then Data Link Engineer.

• If creating different data link tables for each node, create data link parameters for each node by editing tables for each node individually.

CX-Programmer Procedures Section 4-12

4. Check the data link tables from the Data Link Editor by selecting Ta ble and then Check.

5. Save the data link tables from the Data Link Editor by selecting File and then Save or Save as.

6. Connect to the network from CX-Net by selecting PLC and then Open.

7. Read the data link tables and transfer them to the PLC using the Data Link Setup Dialog Box from CX-Net. Select Data Links and then Setup.

8. Start the data links using the Data Link Status Dialog Box from CX-Net. Select Data Link and then Status.

Note Data link tables cannot be set for the C200H-SLK21 and C1000H-SLK21.

Refer to

9-3 Using the C200H-SLK21 or C1000H-SLK21 for details.

4-12-2 Data Link Settings

System Configuration

CX-Programmer

Node 1, CS-series PLC

Note The network settings for the three PLCs shown above have already been

saved in the CX-Server file (.CDM). For CX-Server file creation, refer to in the CX-Programmer Operation Manual.

Opening CX-Server Files (.CDM)

Read the CX-Server file in CX-Net using the following procedure.

1,2,3... 1. Start CX-Net from the CX-Programmer by selecting Tools and then Net-

work Configuration Tool.

Node 2, CVM1 PLC

Node 3, CS-series PLC

SYSMAC LINK Network

CX-Programmer Procedures Section 4-12

2. Open the CX-Server file (*.CDM) in CX-Net or create a new file in CX-Net by selecting Project and then Open in CX-Net. In this example, Sample.cdm is used as the file name. The following dialog box will be displayed.

Creating Data Link Tables

Starting the Data Link Editor

1,2,3... 1. Select Data Link and then Editor. A dialog box for selecting the type of

Making Manual Settings without Using the Data Link Table Engineer

Create the data link tables for each node entered in the CX-Server file. In this example, the data link tables are created automatically using the Data Link Table Engineer, then the parameters are changed manually.

data link will appear.

2. Select SYSMAC LINK Data Link Table and then click the OK button. The Data Link Editor [SYSMAC LINK] will start.

You can make Manual Settings without using the Data Link Table Engineer. Create data link tables manually in the following cases.

• The send area size is different for each node participating in the data link.

• The send node order is not the same as the order of node addresses.

• There are nodes that are not receiving data.

CX-Programmer Procedures Section 4-12

Refer to the following example for details.

CIO Area

Node 1 Node 2 Node 3

DM Area

Send (1)

Receive (3)

Receive (2)

Node 1 Node 2 Node 3

Send (1)

Receive (3)

Receive (2)

Receive (1)

Receive (3)

Send (2)

Receive (1)

Receive (3)

Send (2)

Receive (1)

Receive (2)

Send (3)

Receive (1)

Receive (2)

Send (3)

1,2,3... 1. Select Data Link and then Editor. A dialog box for selecting the type of

data link will appear.

CX-Programmer Procedures Section 4-12

2. Select SYSMAC LINK Data Link Table and then click the OK button. The Data Link Editor [SYSMAC LINK] will start.

3. Set the data link communications cycle time in the Cycle Time field under Common Link. If you select Auto, the optimum communications cycle time will be automatically calculated according to the data link tables. If you select Manual, set the time manually between 5 to 255 ms (refer to 4-11 Data Link Characteristics for communications cycle time details).

4. Double click a node address in the Nodes field, or select Ta ble and then Edit Table Item. The Data Link Table Entry Dialog Box will appear.

Note (a) If using CX-Programmer Ver. 1.2 (Service Pack 1), select CV/

CVM1 for the PLC type when using a CS-series SYSMAC LINK Unit.

If a CV/CVM1 PLC is set, the manual settings words will be limited to the same words as for CVM1/CV, as follows: CIO Area: CIO 0000 to CIO 2555 DM Area: D00000 to D24575

(b) CS-series PLC types can be specified with CX-Programmer Ver.

2.0 or later and so the above limitations to manual settings words do not apply.

CX-Programmer Procedures Section 4-12

Set the local node CIO Area send size in words. Setting range: 0 to 254 words. When this setting is 0, the local node will not send CIO data (i.e., will receive only).

Set the local node DM Area send size in words. Settings range: 0 to 254 words. When this setting is 0,

The node address selected for editing

If using CX-Programmer Ver. 1.2 (Service Pack 1), select CV/CVM1 for the PLC type when using a CSseries SYSMAC LINK Unit. The words for manual settings will be limited to the same words as for CVM1 and CV-series PLCs. If using CX-Programmer Ver. 2.0 or later, CS-series PLC types can be specified and so the above limitations to words for manual settings do not apply.

the local node will not send DM data (i.e., will receive only).

Set the address of the first word in the CIO Area data link of the local node. Setting range: CIO 0000 to CIO 2555.

Set the address of the first word in the DM Area data link of the local node. Setting range: D00000 to D24575. (Setting range with CX-Programmer Ver.

2.0 or later: D00000 to D32767.)

Set in order the node addresses with which the local node will refresh data, starting with the data link start addresses set above. If the address of the local node is set, it will send the specified word data to other nodes. If the address of another node is set, the local node will receive the data sent by that node. For example, if you enter 3, 2, 1 as the refresh order, the node addresses will be allocated in the order 3, 2, 1, starting from the start address. If the local node address is 1, it will receive data from node 3, then from node 2, and finally, it will send data itself). Always include the local node in the refresh node order. Data will not be received from the local node by another other node if the local node is not specified.

5. Enter the value in each field. The following example shows settings for node 1.

CX-Programmer Procedures Section 4-12

Node address Local node address: 1

Common link parameters

Refresh parameters

6. Set the settings for node 2 and 3 in the same way. The following example shows the settings for node 2.

CIO Area size CIO Area local node send size: 20 words. DM Area size DM Area local node send size: 30 words. PLC type Select “CV/CVM1” Start

word

Refresh nodes

CIO CIO Area local node data link start address:

CIO 1000.

DM DM Area local node data link start address: D00500

Node refresh order: 1, 3, 2 Node addresses are listed in order with the starting

node address first. Because here the local node is listed first, node 1 will first send data and then received data in order from nodes 3 and then 2.

The following example shows the settings for node 3.

CX-Programmer Procedures Section 4-12

7. The following display will appear when the data link table settings have been made for all nodes. The example shows node 1 selected.

Settings and Display Contents

Item Contents

Common Link: Com-

mon link parameters

Node Information Start Channel:

Cycle Time:

Communications cycle time

Ta rg e t Node

Total link CH:

Total number of link words

Nodes The number of send words is displayed for

Start words

Refresh Parameters

Data link communications cycle time: Select automatic or manual settings. Manual setting range: 5 to 255 ms.

Displays the total number of data link words (CIO Area + DM Area). In the example, CIO 70 words + DM 90 words = 160 words.

each node. CIO: Number of CIO Area send words. DM: Number of DM Area send words. In the example, CIO: 20 send words, DM: 30 send words.

Displays the words from which data links start in the CIO and DM Areas for the selected node. In the example, CIO 1000 and D00500 are displayed as the start addresses.

Displays the order in which nodes are refreshed in the second column from the left. The values on the right are the number of words received from the node in the CIO Area and DM Area.

In this example, nodes are refreshed in the order 1, 3, 2.

CX-Programmer Procedures Section 4-12

The following example shows the display for node 2.

Using the Data Link Table Engineer

The following example shows the display for node 3.

Use the Data Link Table Engineer if creating data link tables similar to the automatic settings. The Data Link Table Engineer will automatically create data link tables with the following conditions:

• The PLC type will be the same for all nodes participating in the data links.

• The first word containing the data link status will be the same for all nodes participating in the data links.

• The start word for data link area 1 and the start word for data link area 2 will be the same for all nodes participating in the data links.

CX-Programmer Procedures Section 4-12

• The send area sizes will be the same for all nodes participating in the data links.

• The send node order will be in the order of node addresses

• There will be no nodes that do not receive.

Setting Example

The following example shows the Data Link Table Engineer settings.

Area 1

Node 1 Node 2 Node 3

Area 2

Send (1)

Receive (2)

Receive (3)

Node 1

Send (1)

Receive (2)

Receive (3)

Receive (1)

Send (2)

Receive (3)

Node 2

Receive (1)

Send (2)

Receive (3)

Receive (1)

Receive (2)

Send (3)

Node 3

Receive (1)

Receive (2)

Send (3)

1,2,3... 1. Select Table and then Data Link Engineer. The Data Link Table Engineer

dialog box will be displayed, as shown below.

2. Make the following settings.

• In the Valid Nodes Field, enter the node addresses for the automatic settings.

• In the Common Link Parameters Field, set the send size for each node in the CIO Area and in the DM Area. All nodes must have the same send sizes.

• Set the PLC type in the PLC Type Field under Refresh Parameters. Select “CV/CVM1.”

• In the Start Channel Field, set the first words in the CIO Area and DM Area data links.

CX-Programmer Procedures Section 4-12

Note If using CX-Programmer Ver. 1.2 (Service Pack 1), select “CV/CVM1” for the

PLC type when using a CS-series SYSMAC LINK Unit. With CX-Programmer Ver. 2.0 or later, CS-series PLC types can be specified.

3. Click the OK button. As shown below, a data link table will be automatically created for all nodes in the Nodes Valid Field. All nodes will have the same start words and the same send sizes, and the refresh order set in the same order as the node addresses.

This completes the data link tables creation. Next, check and save the data link tables using the following procedures.

CX-Programmer Procedures Section 4-12

Checking Data Link Tables

Select Data Link Editor [SYSMAC LINK], Table, and then Check. The check results will be displayed as follows:

Refer to the CX-Programmer Operation Manual (W414) for details on error messages for the check results of data link tables.

Saving Data Link Tables

Save the data link tables. Data link tables are saved with an .sl3 extension.

1,2,3... 1. Select Data Link Editor SYSMAC LINK, File, and then Save as. The

Save As Dialog Box will appear.

2. Enter the file name (e.g., “Sample”), specify the directory to which to save, and click the Save button. The file will be saved with an .sl3 extension (e.g., “Sample.sl3”).

Connecting to the Network

1,2,3... 1. Select the PLC to connect to the network from the PLC Network Config-

uration Tool in CX-Net.

Select PLC to connect.

PC001_Node 1 shows the SYSMAC Bus connection.

Shows the connection path. Red when offline and green when online.

Shows the online PLC type and CPU model.

CX-Programmer Procedures Section 4-12

2. Select PLC and then Open. When connected, the display will change as follows:

Turns green

Shows connection status and PLC mode.

Select PLC and then Open to reconnect if disconnected.

Reading and Transferring Data Link Tables

Read the data link tables that have been created and then transfer them to all the nodes participating in the data links.

Reading Data Link Tables

1,2,3... 1. Start the CX-Net and select Data Link and then Setup. If connected locally

(i.e., directly to the PLC), the Data Link Setup (Local) Dialog Box will appear.

Select this button to display the Communications Units mounted on the PLC .

If connected remotely (i.e., through a network), the Data Link Setup (SYSMAC LINK) Dialog Box will appear.

2. Select SYSMAC LINK and then click the OK button. The following dialog box will appear.

Open the data link table file (*.sl3). Refer to

Link Setup (SYSMAC LINK) Dialog Box Functions

below for other button functions.

Data

CX-Programmer Procedures Section 4-12

3. Click the Open button. The Open Dialog Box will appear.

4. Select the data link tables file (Sample.sl3), and then click the Open button. The data link tables will be read as follows:

The data link parameters (Common Link Parameters and Refresh Parameters) will be displayed when the data link tables are read.

Click the Write button to transfer the data link tables to the PLCs. Refer to

Data Link Setup (SYSMAC LINK) Dialog Box Functions

ton functions.

Transferring Data Link Tables

below for other but-

1,2,3... 1. Select the destination PLC node address in the Nodes Field under Com-

Note If directly connected online with a PLC for which the routing tables have not

Data Link Setup SYSMAC LINK Dialog Box Functions

mon Link, or select the Operate on all Nodes in Network Checkbox. If Operate on all Nodes in Network is selected, you can transfer data link

tables simultaneously to all PLCs.

2. Click the Write button.

• Data link tables will start to be transferred to the nodes set in the Nodes Field, or to all the nodes on the same network.

• When the transfer is finished, the bottom of the window will be displayed as follows:

been set, data link tables cannot be transferred to PLCs that are not directly connected to the network. Perform one of the following to transfer data link tables to PLCs on the network.

• Directly connect to a PLC in which the routing tables have been set and transfer the data link tables.

• Connect online to a PLC on the network, and transfer the data link tables.

The following table displays the functions of the Data Link Setup (SYSMAC LINK) Dialog Box.

Button name Function

Close Closes the dialog box. New Clears the data link table currently in operation. Open Reads the data link tables file (*.sl3). Info Used to display and enter the name of the creator, file title, com-

ments, etc.

Save as Used to save the edited data link tables (*.sl3).

CX-Programmer Procedures Section 4-12

Button name Function

Edit Used to edit the data link table that has been read. Update Transfers the contents of the file edited in the Data Link Editor to the

Read Reads the data link table for a specified node. Write Transfers data link tables to the nodes. Verify Verifies data link tables between nodes and the Data Link Setup

Delete Deletes data link tables from the nodes.

Data Link Setup Dialog Box.

(SYSMAC LINK) Dialog Box.

Starting and Stopping Data Links (with Status Display)

Connect online to a node to which the data link tables have been transferred before performing the following operations. Data links can be started or stopped from any node if the node has a data link table.

Starting Data Links

1,2,3... 1. Start CX-Net and select Data Link and then Status. If connected locally

(i.e., directly connected to a PLC), the Data Link Status (Local) Dialog Box will be displayed. If connected remotely (i.e., through a network), the Data Link Status Dialog Box will appear.

Select this button to display the Communications Units mounted on the PLC.

Set the data link start and stop using this selection button and then the Set option button.

2. Select SYSMAC LINK and then click the OK button.

• The Data Link Status Dialog Box will be displayed.

• The status for each of the following will be displayed in the Data Link Status Dialog Box. The communications cycle time and the refresh cycle time can be updated only when this window is open or when the data link has been started or stopped.

CX-Programmer Procedures Section 4-12

3. Select the Run option button under Operation.

4. Click the Set button. The data links will start, and the Operational Status Box will display the operational status.

Stopping Data Links

1,2,3... 1. Open the Data Link Status Dialog Box and then select the Stop option but-

ton under Operation.

2. Select the Set button. The data link will stop.

SECTION 5

Network Data Exchange

The CS-series PLCs allow data exchange between networks. This section provides the details of the data exchange functions of the CS-series PLCs via SYSMAC LINK Networks.

5-1 What is Network Interconnection?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

5-1-1 Interconnecting SYSMAC LINK Networks . . . . . . . . . . . . . . . . . . 84

5-1-2 Interconnecting Different Types of Networks . . . . . . . . . . . . . . . . . 84

5-2 Routing Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5-2-1 Routing Table Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5-2-2 Local Network Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5-2-3 Relay Network Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

5-3 Routing Table Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Omron CS1W-SLK11-21 OPERATION MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual

About this Manual:

PRECAUTIONS

1 Intended Audience

2 General Precautions

3 Safety Precautions

4 Operating Environment Precautions

5 Application Precautions

6 Conformance to EC Directives

6-1 Applicable Directives

6-2 Concepts

6-3 Conformance to EC Directives

1-1 Overview

1-2 SYSMAC LINK Unit Features

1-2-1 Standard Models

1-2-2 Specifications

1-3 SYSMAC LINK Unit Functions

1-3-1 Basic Settings

1-3-2 Data Links

1-3-3 Network Data Exchange

1-3-4 Message Service

1-3-5 Remote Programming and Monitoring

1-3-6 RAS Functions

1-4 Programming Devices and Support Software

1-4-1 Basic Programming

1-4-2 CX-Programmer

1-5 Data Link Procedures

1-5-1 Manually Setting Data Links

1-5-2 Automatically Setting Data Links

1-6 Message Service Procedure

2-1 Nomenclature

2-1-1 Component Names and Functions

2-1-2 Indicators

2-2 Switch Settings

2-3 Mounting to Backplanes

2-4 Cable Connections

2-4-1 Coaxial Units

2-4-2 Optical Units

2-4-3 Backup Power Supply

3-1 SYSMAC LINK System Communications

3-2 Unit Number

3-3 Setting Node Address

3-4 Network Address Setting

3-5 Network Parameters

3-6 Memory Areas

3-6-1 Word Allocations

3-6-2 Word Applications

4-1 Introduction

4-2 Data Link Specifications

4-3 Data Link Indicators

4-4 Data Link Settings

4-4-1 Rotary Switches

4-4-2 Specifying Data Link Mode and Number of Data Link Words

4-4-3 Data Link Start/Stop Bit

4-5 Creating Data Links

4-5-1 Automatic and Manual Settings

4-5-2 Automatic Data Link Tables

4-5-3 Manually Generating Data Link Tables

4-5-4 Table Backup

4-6 Data Link Area Allocations

4-6-1 Automatic Settings

4-6-2 Manual Settings

4-6-3 Refreshing Data Links with Automatic Settings

4-6-4 Refreshing Data Links with Manual Settings

4-7 Data Link Table Example

4-8 Controlling Data Links

4-8-1 DM Parameter Area Software Switches

4-8-2 DATA LINK START/HALT Commands

4-8-3 CX-Net in CX-Programmer

4-9 Data Link Status

4-9-1 Data Link Status

4-9-2 Word Structure

4-10 Data Link Precautions

4-11 Data Link Characteristics

4-11-1 Data Link Communications Cycle Time

4-11-2 Data Exchange Timing

4-11-3 Calculation Examples for Data Link I/O Response Times