I’m trying to bring in tags from a new PLC (SLC 5/05) and when I try browsing the OPC, I get the following error:
Browse failed with message:E_UNKNOWN_ITEM_NAME.
The error log may provide more information. Also, refreshing the OPC servers may solve the problem.
When I look at the log viewer, it doesn’t really give me any information I can figure out. There are two errors.
at OpcCom.Da20.Server.Get Enumerator (String itemID, BroweFilters filters, Boolean branches, OPCNAMESPACETYPE namespaceType, String completePath)
at OpcCom.Da20.Server.GetElements(Int32 elementsFound, ItemIdentifier itemID, BrowseFilters filters, Boolean branches, BrowsePosition& position)
at OpcCom,Da20.Server.Browse(ItemIdentifier item ID, BrowserFilters filters, BrowsePosition& position)
at Opc.Da.Server.Browse(ItemIdentifier itemID, BrowseFilters, filters, BrowsePosition&
The remote server is not currently connected.
At FactorySQL.OPCSystem.MonitorServers(ExecutionToken Token)
And thanks to the fact that it doesn’t let you copy text, I just typed that all that out by hand.
I can see the PLC in RsLinx. I can go online with RsLogix. This PLC is currently being used to control a machine, and the operator is interacting with it from RsView. So I know the PLC is online, and this server can ping and see it.
Oh yeah, and I refreshed the OPC servers.