Allen-Bradley ControlLogix SynchLink 1756-SYNCH User manual

ControlLogix
SynchLink Module
1756-SYNCH
User Manual
Allen-Bradley Parts

Important User Information
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Allen-Bradley be responsible or
liable for indirect or consequential damage resulting from the use or
application of these products.
Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Allen-Bradley does not assume
responsibility or liability (to include intellectual property liability) for
actual use based upon the examples shown in this publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the
Application, Installation and Maintenance of Solid-State Control
(available from your local Allen-Bradley office), describes some
important differences between solid-state equipment and
electromechanical devices that should be taken into consideration
when applying products such as those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole
or part, without written permission of Rockwell Automation, is
prohibited.
Throughout this publication, notes may be used to make you aware of
safety considerations. The following annotations and their
accompanying statements help you to identify a potential hazard,
avoid a potential hazard, and recognize the consequences of a
potential hazard:
WARNING
!
Identifies information about practices or
circumstances that can cause an explosion in a
hazardous environment, which may lead to personal
injury or death, property damage, or economic loss.
ATTENTION
!
Identifies information about practices or
circumstances that can lead to personal injury or
death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.

Rockwell Automation
Support
Before you contact Rockwell Automation for technical assistance, we
suggest you please review the troubleshooting information contained
in this publication first.
If the problem persists, call your local Rockwell Automation
representative or contact Rockwell Automation in one of the
following ways:
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Allen-Bradley Parts

1Publication 1756-UM521B-EN-P - September 2001
Preface
About This Preface
This preface describes how to use this manual. The following table
describes what this preface contains and its location.
Who Should Use
This Manual
You must be able to program and operate an Allen-Bradley
ControlLogix™ Logix controller and ControlLogix I/O modules to
efficiently use your SynchLink™ module.
We assume that you know how to do this in this manual. If you do
not, refer to Related Documentation, before you attempt to use this
module.
Purpose of This Manual
This manual describes how to install, configure, and troubleshoot
your ControlLogix SynchLink module.
For information about: See page:
Who Should Use This Manual Preface-1
Purpose of This Manual Preface-1
Related Products and Documentation Preface-4
IMPORTANT SynchLink should be used in conjunction with a
standard control network, such as ControlNet or
Ethernet. A standard network is used for general
control interlocking and transfer of diagnostic data
across the system.
SynchLink does not function as a standard control
network (e.g. it broadcasts data in a unidirectional
manner).
Allen-Bradley Parts

Publication 1756-UM521B-EN-P - September 2001
Preface 2
What This Manual Contains
This user manual contains the following sections:
-
Description of the SynchLink module - Description of how the SynchLink module
synchronizes time in the ControlLogix system
-
Description of the SynchLink module
certifications and general features
-
Description of how to install the SynchLink
module and connect the fiber optic cable
-
Description of how to configure the
SynchLink module with RSLogix 5000
-
Description of howto troubleshoot
the SynchLink module
LINK
SYNC
OK
LINK
COMM
SynchLink

Publication 1756-UM521B-EN-P - September 2001
Preface 3
-
Listing of the SynchLink module
specifications
Appendix B - Configuring the Star
Configuration
Example of how to configure the
SynchLink Star Configuration
-
Example of how to configure the
SynchLink Daisy Chain Configuration
-
Example of how to configure the
SynchLink Ring Configuration
Glossary of terms used with the
SynchLink module Indexoftermsand conceptsexplained
thoughout this user manual
Appendix E - Software
Configuration Tags
Complete list of all the input and
output data tags
Allen-Bradley Parts

Publication 1756-UM521B-EN-P - September 2001
Preface 4
Related Products and
Documentation
The following table lists related ControlLogix products and
documentation:
If you need more information on these products, contact your local
Allen-Bradley integrator or sales office for assistance. For more
information on the documentation, refer to the Allen-Bradley
Publication Index, publication SD499.
Table Preface.A
Related Documentation
Catalog
number: Document title: Pub. number:
1756-SYNCH ControlLogix SynchLink Module Installation
Instructions 1756-IN575
1756-A4, -A7,
-A10, -A13 ControlLogix Chassis Installation Instructions 1756-IN080B
1756-PA72,
-PB72 ControlLogixPowerSupplyInstallationInstructions 1756-5.67
1756-PA75,
-PB75 ControlLogixPowerSupplyInstallationInstructions 1756-5.78
1756-Series ControlLogix Module Installation Instructions
(Each module has separate installation document.) Multiple 1756-IN numbers
1756-Series ControlLogix System User Manual 1756-UM001
Multiple
numbers SynchLink Design Guide 1756-TD008
1751-SLBA SynchLink Base Block Installation Instructions 1751-IN001
1751-SL4SP SynchLink 4-port Splitter Block Installation
Instructions 1751-IN002
1751-SLBP SynchLink Bypass Switch Block Installation
Instructions 1751-IN003
1756-DM ControlLogix Drive Module Installation Instructions 1756-IN577
1756-DM ControlLogix Drive Module User Manual 1756-UM522
PowerFlex 700S User Manual 20D-UM001

iPublication 1756-UM521B-EN-P - September 2001
Table of Contents
Chapter 1
What is the 1756-SYNCH module?
What is the ControlLogix SynchLink Module? . . . . . . . . . . . 1-1
What Data Does the SynchLink Module Transfer? . . . . . 1-1
Why Synchronize Time Between Chassis? . . . . . . . . . . . 1-2
What Are Some of the Features Available On the
ControlLogix SynchLink Module? . . . . . . . . . . . . . . . . . 1-2
Connecting a SynchLink Module to a SynchLink System . . . 1-3
Physical Features of the ControlLogix SynchLink Module 1-4
Using Module Identification and Status Information . . . . . . 1-5
Preventing Electrostatic Discharge . . . . . . . . . . . . . . . . . . . 1-7
Removal and Insertion Under Power . . . . . . . . . . . . . . . . . 1-7
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 1-8
Chapter 2
Time Synchronization in the
ControlLogix System
Using the Coordinated System Time (CST) . . . . . . . . . . . . . 2-2
Time Synchronization in a Distributed Control System . . . . 2-2
Time Synchronization in the SynchLink System . . . . . . . . . 2-2
SynchLink Node Clock. . . . . . . . . . . . . . . . . . . . . . . . . 2-3
How Do the CST Clock and SynchLink Node
Clock Work Together?. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Configuring Time Mastership Functionality. . . . . . . . . . . . . 2-6
What are the SynchLink Configurations?. . . . . . . . . . . . . . . 2-8
Star Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Daisy Chain Configuration . . . . . . . . . . . . . . . . . . . . . . 2-9
Ring Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Cable Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 2-11
Chapter 3
SynchLink Module Features
General Module Features. . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Removal and Insertion Under Power (RIUP) . . . . . . . . . 3-2
Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Fully Software Configurable . . . . . . . . . . . . . . . . . . . . . 3-3
LED Status Information. . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Class I Division 2 Certification . . . . . . . . . . . . . . . . . . . 3-4
Agency Certification. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Configurable Module Features . . . . . . . . . . . . . . . . . . . . . . 3-4
Communications Format. . . . . . . . . . . . . . . . . . . . . . . . 3-5
Electronic Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Requested Packet Interval . . . . . . . . . . . . . . . . . . . . . . 3-11
SynchLink Transmitted Axes. . . . . . . . . . . . . . . . . . . . . 3-13
Transmitted Direct Words. . . . . . . . . . . . . . . . . . . . . . . 3-14
CST and SynchLink Mastership. . . . . . . . . . . . . . . . . . . 3-16
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 3-16
Allen-Bradley Parts

Publication 1756-UM521B-EN-P - September 2001
Table of Contents ii
Chapter 4
Installing the SynchLink Module
Noting the Power Requirements . . . . . . . . . . . . . . . . . . . . 4-1
Installing the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Connecting the Fiber Optic Cable . . . . . . . . . . . . . . . . . . . 4-3
Removing the Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 4-5
Chapter 5
ConfiguringtheSynchLinkModule
RSLogix 5000 Configuration Software. . . . . . . . . . . . . . . . . 5-1
Overview of the Configuration Process . . . . . . . . . . . . . . . 5-2
Choose a SynchLink Configuration. . . . . . . . . . . . . . . . . . . 5-3
Star Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Daisy Chain Configuration.. . . . . . . . . . . . . . . . . . . . . . 5-3
Ring Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Create a New RSLogix 5000 Project. . . . . . . . . . . . . . . . 5-4
Add a SynchLink Module . . . . . . . . . . . . . . . . . . . . . . . 5-5
Configure the SynchLink Module . . . . . . . . . . . . . . . . . 5-6
Download Configuration . . . . . . . . . . . . . . . . . . . . . . . 5-8
Changing Configuration After Module Operation Has Begun 5-9
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 5-10
Chapter 6
Troubleshooting the
SynchLink Module
Using the Status Indicators. . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Using RSLogix 5000 to Troubleshoot the Module . . . . . . . . 6-3
Determining Fault Type . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Using Diagnostic Counters. . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Message Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Message Configuration. . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Retrieving and Resetting Diagnostic Counters. . . . . . . . . . . 6-11
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 6-11
Appendix A
Specifications Appendix B
Configuring the Star Configuration
Using Remote Axis Control . . . . . . . . . . . . . . . . . . . . . . . . B-2
Configure Time Master Chassis - Master Node. . . . . . . . B-2
Configure Time Slave Chassis - End Node. . . . . . . . . . . B-8
Configure Time Slave Chassis - End Node. . . . . . . . . . B-13