Allen-Bradley 1756-CNB - Analyzing and Exporting System Events

Publication 1756-UM523F-EN-P - December 2006
Maintain and Troubleshoot the System 109
Interpret the SRM Event Log
To determine why a system switched over or failed to synchronize,
you must interpret the SRM event log.
To interpret the SRM event log, perform this procedure when:
• a switchover happens but your system synchronizes again.
• you have already tried to use the hardware lights to find why
your system will not synchronize.
2. Check the recent synchronization
attempts.
3. Look for the reason. If Then
Another computer is editing the project in
the controller.
Stop the edit session.
The project contains test edits. Untest the edits.
The Nonvolatile Memory Load/Store dialog
of the controller is open.
Close the Nonvolatile Memory Load/Store
dialog.
You tried to synchronize the chassis while
downloading a project at the same time.
Wait for the download to finish.
4. Manually synchronize the chassis. Choose Synchronize Secondary and then Yes — continue with synchronization.
Action Details
A. Click Synchronization.
B. Do you see Edit Session In Progress under Recent
Synchronization Attempts?
• Yes — Go to step 3.
• No — An edit session did not stop
synchronization. Return to Troubleshoot a
Failure to Synchronize on page 105.