I am in aluminium plant where abb's MSI is randomly loosing their data between our power plant and aluminum plant
whenever it happens we always witnessed message "Remote server inoperative" & "Service Provider in Operational state".
and one error message shows(but i am not sure whether this message has any relavence to this problem) "the abb opc server for ac 800m service terminated unexpectedly" in one of the two servers. however this service gets started within a minute.
We are still finding the root cause of this problem.Please let us know if u people have any idea about that.
If RAS (provider) OPC server is terminating unexpectedly,then check for the errors in OPC log files which gives hint for the cause.
Before OPC server terminates,look any abnormal events in the system event list/windows event list which might give reason for failure.
If RAS (provider) is non-redundant,then go for redundant RAS to avoid data loss to RAC(subscriber)
Please check the Physical connection and network configuration.
If RAC loose the communication,then check the status of RAC service.If it is in error,
analyse the error code with afwerrorlookup tool.
If you couldn't manage to find out the reason and fix,then contact your regional support center for the assitance.
I agree with the previous answer; collect as much information as possible out of the system (event lists, exception logs, etc.) and contact your regional ABB support center.
The reason for the AC800 OPC server problem may be something completely else, or be due to a common problem, e.g. PC running out of resources, e.g. memory, CPU time, etc.
The AC800 OPC server has a log file which should contain some evidence to why it restarted. In pre 5.1 versions, the memory heap must be set to an appropriate value or else the OPC server will crash when it runs out of heap memory. If you find recent .dmp files and can rule out heap exhaution its time to submit a support case.
If the system is virtualized problems can emerge from "external" activities in the host, e.g. a backup agent or anti-virus software that consumes too much resources.