Rockwell Automation 1756-RMxx ControlLogix Enhanced Redundancy System User Manual - Manual (Page 205)

Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 205
Troubleshoot a Redundant System Chapter 9
Module-level Synchronization Status
The Synchronization Status tab provides a module-level view of redundant
chassis and can be used to identify what module pair may be causing a
synchronization failure.
Depending on the type of synchronization failure, you may need to open the
Synchronization Status tabs for the primary and secondary redundancy modules.
• If there is a difference between major revisions of the controllers/modules,
the Compatibility column shows Undefined, as shown in this graphic.
• If there is a difference between minor revisions of the controllers, the
Compatibility column shows Incompatible, as shown below.
Primary Chassis
Secondary Chassis
19.53
Primary Chassis
Secondary Chassis