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Allen-Bradley 1756-RM2 - Default Chapter; Table of Contents

Allen-Bradley 1756-RM2
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Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 5
Table of Contents
Preface
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Chapter 1
About Enhanced Redundancy
Systems
Features of the ControlLogix Enhanced Redundancy System . . . . . . . . 16
Enhanced Redundancy System Components . . . . . . . . . . . . . . . . . . . . . . . 17
I/O Modules in Enhanced Redundancy Systems . . . . . . . . . . . . . . . . 18
Enhanced Redundancy System Operations . . . . . . . . . . . . . . . . . . . . . . . . . 19
System Qualification and Synchronization . . . . . . . . . . . . . . . . . . . . . 19
Switchovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Restrictions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Chapter 2
Design an Enhanced Redundancy
System
Components of an Enhanced Redundancy System . . . . . . . . . . . . . . . . . . 24
Redundant Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Controllers in Redundant Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Redundancy Modules in Redundant Chassis. . . . . . . . . . . . . . . . . . . . 31
Communication Modules in Redundant Chassis. . . . . . . . . . . . . . . . 32
Power Supplies and Redundant Power Supplies in Enhanced
Redundancy Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
EtherNet/IP Networks with Redundant Systems . . . . . . . . . . . . . . . . . . . 35
EtherNet/IP Network Features in an Enhanced
Redundancy System, Revision 19.052 or Later . . . . . . . . . . . . . . . . . . 35
IP Address Swapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Unicast Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Possible Communication Delays on EtherNet/IP Networks . . . . . 36
ControlNet Networks with Redundant Systems . . . . . . . . . . . . . . . . . . . . 38
ControlNet Network Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Redundant ControlNet Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Other Communication Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
I/O Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
1715 Redundant I/O Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Using HMI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
HMI Connected via an EtherNet/IP Network. . . . . . . . . . . . . . . . . . 46
HMI Connected via a ControlNet Network. . . . . . . . . . . . . . . . . . . . 47
Firmware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Required Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Optional Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Chapter 3
Install the Enhanced Redundancy
System
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Enhanced Redundancy System Quick Start . . . . . . . . . . . . . . . . . . . . . 51
Install an Enhanced Redundancy System . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Step 1: Install the Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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