CEX Bus Communication Failure Between Primary and Backup
We have more than 8 nodes having PM866 controller and we are getting some time CEX Bus Communication Failure Alarm as per attachment. By Analysis I observed that whenever I made changes in IO Connections and Download Program to Controller that time only I'm getting CEX Bus Communication Failure Between Primary and Backup Alarm for CI854. But it's not everytime sometime and there is no switchover of CI854,BC810 or Controller. Please advice if any preventive actiions can be taken to avoid failure...?
Thanks in Advance...
As per log there is no fault logged related with CEX communication.
Please generate log for both controllers and check with latest fault.
Note: Is there any Battery related fault persists in controller?
Because we also faced such situation that CEX fault came but actually no faults and no switchover. But there exist some external problem that time. So corrected that.