GUID Alarm No Object Name
Would you someone explaine why I would receive in the Alarm List alarms with only GUID and no object names, no description nothing. The only way to resolve it was to delete them from the alarm list.
I need more explaination on this issue:
Why it is happened?
What is the proper way to deal with it?
How can I check there is no more alarms with such GUID name only?
System: ABB 800xA verison 5.1
In System 800xA, each alarm and also event *NEED* to be properly associated with an object.
The object carries the Object Name and Description used in most alarm/event lists.
System 800xA has a feature called "Lost and Found" which can be enabled to give "objectless" alarms a temporary object. Alarms from temporary objects in Lost and Found can be acknowledged but the context menu is short since no association has been made with any proper object in the system. Perform upload, then empty the Lost and Found folder.
Depending on what has taken place in your case, the object may be missing (in which OPC SrcName as received from the OPC AE server will still be available for presentation) or has been deleted.
Deletion of objects does not delete alarms in the Alarm Manager! Alarms will linger until the OPC AE server has returned them to idle (enabled, inactive, acknowledged) or has been removed by OPC AE refresh or manual deletion (possible for users with the Administrate privilege). Manual deletion is only "skin deep" in the Alarm Manager, if the source OPC AE server still has the alarm condition, it will "surface" again at next state change or refresh. Only use delete when you know that the source OPC AE server does not have the alarm.
I have attached a slide I use when teaching the E143 Troubleshooting System 800xA workshop here in Västerås.
Please note the SourceGUID in red at the top (an alarm may be delivered with or without SourceGUID). Without a SourceGUID the Event Collector will search for a matching object to pair the alarm with; with no match, a Lost and Found temporary object will be created to "host" the alarm.
The Object Name and Description seen in the alarm/event lists are drawn from the object. No object = no description.
when alarms come to the OPC-server, and no matching name in the aspect system is found then you get only the GUID.
Do you have objects in Control Structure Root/Lost And Found ? There are objects placed if the OPC-server receives an event with an object name that does not exist in control structure. Objects in Lost And Found can be removed if you know that the objects should not exist. Restart the services.
It looks like object alarm/event properties are lingering in the OPC AE server since Object is not present plant explorer where in it's running in the controller so this GUID is refering in your alarm list & its gets created under lost and found of Control str.
so you can fix this by
1.restart the controller & do the fresh download
2.perform the name uploader.
3.delete the lost & found objects
4.restart your alarm event service groups.
5.stop & start your alarm manager service