i need to read some data from a GE plc.so i connect DeltaV system to the GE PLC using OPC mirror installed in the DeltaV APP station.but i can not see the OPC server of GE plc in the DeltaV system.i have imported the license correctly. could someone give me a hand? or if there is document about DeltaV OPC mirror?
Where is the GE OPC server located? You need to point OPC Mirror to the physcial server (PC) where the GE OPC server resides.
In reply to AdrianOffield:
thanks, and how to point OPC mirror to the physcial server? i can see the GE PLC's OPC server using WinCC as a client, but can't using OPC Mirror as both are servers.
thanks and i have done what you said, the problem is that i can't browse the GE PLC server in the OPC mirror.the connection between two computers are good, and the OPCwatchit works well in both physcial when browsing the OPC.DeltaV.1,but can't browse the GE's OPC server in both physical server. if i need to set special settings for the two computers ,like DCOM ?
In reply to qingshan6013:
Can you check if DCOM is enabled and the DCOM security setting?
In reply to Joseph Lim:
thanks, the DCOM has been enabled and i think DCOM security has been setted correctly because i can see the GE OPC server using WINCC as a client.
Another quention, is the OPCwatchit a general utility tool? if i can use it to browse GE's OPC server in the GE's physical server? thank you.
OPCWatchit can be used to connect and browse other OPC servers, but the browse function is an optional feature and may not be supported on some servers.
It's been a long while since I've worked OPC issues, but one thing I'm thinking is that the windows security needs to be set correctly. The Client needs to be able to authenticate. Make sure you have a valid user with valid password on both machines. When you launch OPC Watchit, it is using your windows credentials, and if you are not a valid user, you may not be able to connect to a server.
For browsing, there is also a need to properly register some OPC Dll's. Have you run OPC Remote on the GE server? Maybe some one on this thread can confirm if this would help.
Have you tried loging a call with the GSC? The CTS database likely has this issue documented and you'd get a confirmed solution instead of guesses from "helpful" people like me.
Andre Dicaire
In reply to Andre Dicaire:
thank you very much, two control systems have been connected.
i think it was the OPC DLL issue. After i registered these DLL files like opc_aeps.dll,opccomn_ps.dll,opcdaauto.dll...,problem solved.thank you all the same!