Rockwell Automation Publication 1756-UM535D-EN-P - November 2012 207
Troubleshoot a Redundant System Chapter 9
2. If an event occurred, open the Event Log for both chassis (A and B).
3. Locate the Event line that shows the qualification code, start date and time
of the event, in the A chassis event log.
This is the last time the redundancy module was working properly.
Please note, multiple codes could be displayed if multiple errors occurred.
Additionally, if a secondary redundancy module is not present, then a code
may not be seen at all. See Possible Qualification Status Indicators on
page 211.
4. Then, locate the matching time entry in the B chassis event log. This will
display the disqualification code on the Event line.
Chassis A
Chassis B
PwQS and start date and start time in Chassis A.
This is the last time the redundancy module was
working properly.
QSwP and start date and start time in Chassis B.
This is the last time the redundancy module was
working properly, and by time, must match up
with Chassis A.
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