How to refresh the OPC AE Server?
We have a problem that the alarms stops updating now and then.
Sometimes it's from all controllers, sometimes from only one controller and sometime it only updates a few alarms.
In the System Event List there is an alarm saying: OPC_SERVER_ERROR OPC AE Server for AC 800M. Refresh is needed.
How do you perform this needed refresh???
800xA version 6.1.
Voted best answer
Due to that the OPC AE specification has poor support for removal of obsolete alarms, the special "Refresh is needed" event was created by some OPC AE Servers System of 800xA. This event will be raised by the OPC AE server for AC 800M upon download to the controller. If enabled (refresh is optional, but recommended) the Alarm Manager will purge all alarms from the source emitting the "refresh" thereafter will it request an OPC AE Refresh from that source.
This way, the AC 800M subsystem can force an obsolete alarm out of the HMI.
I believe PLC Connect have the same function.
This above does not explain your problem of alarm stop updating, etc. for which we will need more input to be able to analyze further.
There are a few bulletins / alerts published on MMS AE connection failures - check these.
Also, check chapter 8.3 of the SHC manual, attached to this reply.
Ultimately, file a support case with your regional ABB service team to obtain professional assistance.