Go to last post Go to first unread
Offline JM  
#1 Posted : Thursday, February 13, 2020 11:42:04 AM(UTC)

Rank: Newbie

Joined: 2/13/2020(UTC)
Posts: 1

Was thanked: 1 time(s) in 1 post(s)

I am running OPC server for Allen Bradley which is connected to two PLCs. I am also running OPC server for GDA which is connected to a database. I am using the OPC Datamanager to connect all of these together and to log certain information to the database.

All of these components usually work but after about 3 hours of working properly, the items stop working in the Datamanager config program. I get errors of 'This item ID is invalid' and of 'RPC server is unavailable'. When this happens, I am then unable to see/access any tags in the PLC (which I previously had access to) or see any tables in the GDA/database.

Firewall has been turned off and as far as I can see all the RPC services are running. I would suspect RPC but I'm not sure if that is the case since everything runs smoothly for the first few hours. In some cases, after system reboot, I get the same error of invalid item right away.

I am running all of this on a standard windows 10 computer connected locally to the PLCs.

Any thoughts?
thanks 1 user thanked JM for this useful post.
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Matrikon Subscribe  |   Matrikon Unsubscribe  |   Global Unsubscribe  |   Privacy Statement  |   Your Privacy Choices   |   Cookie Notice