Events in Lost and Found but the element exist
Normally in the lost and found are only entries where is no corresponding object found in the system.
I have entries in my lost and found section like 11MAY80EB010(1:30) with only a name on it.
But the object 11MAY80EB010 exist in my Control Structure and is working well. If I delete the entries in lost and found they will come up again after some time.
What could be the reason for such behavior?
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Objects in the Lost and found means there is a mismatch between controller configuration and the CS.
If a alarm or event is received and no match is found an object is created in the Lost and Found which will be associated with the alram and event.Perhaps you can test this by creating an alarm for the particular object and see if this creates the object in lost and found.
A controller upload or download will help in syncronization.
How did you delete the object in the lost and found?
If the object returns then the reasons could be
1) application not uploaded or downloaded properly
2) obsolete alram lingering in the OPC AE server
3) Obsolete alram lingering in the controller.
To find the root cause I suggest getting an expert opinion by contacting the Local supportline.
The connectivity is Advant Master. All is fine with the standard objects. The object type with the problem is a special one which is not recognized by the uploader. The objects are created manually and the references for MB300 Master Bus are set.
Maybe the uploader create additional references elsewhere in the system for routing the events?
As I was said the objects come back to the lost and found I mean they come back in the normal way, the event may have occurs. To say it in another way, the objects in lost and found are not only old ones.
I've found the solution in the end and would like to share it with you even if this question is closed.
I guess this is special to the advant connectivity. There is an aspect "Controller Name" which looks like a normal name aspect. Strange, this one is not accessible by the BDM.
But it contains the name with additional (1:30) or similar. Seems to me that this aspect was filled by the uploader.
For some of the object we have created manually the controller name was empty and these objects then had entries in lost and found.