Smatic NET OPC to ABB800xa Communication
Hi, I have communication issue in getting data from Siemens PLC to ABB 800xA via Simatic NET OPC server and using OPC DA at ABB 800xa end. I already had one Siemens PLC communicating to ABB 800xA therefore OPC DA server was configured by someone else earlier and it works fine therefore I have not made any changes to existing OPC DA server. I added new PLC network under control structure and pointed to Simatic NET OPC server then did PLC upload and manage to see all data blocks from Siemens PLC into ABB 800xA but no data inside data blocks.
Do I need to make any changes to existing OPC DA configuration?
Do you need to configure certain points in SimaticNet OPC server then only ABB 800xa will read data or you can configure Simatic NET OPC server as read all data and ABB 800xA should be able to read all data?
Sorry no idea. If a 3rd party OPC client can browse and view data, so should 800xA.
Connection across different computers require DCOM which is not trivial to setup. Multiple accounts and settings in DCOMCNFG.EXE are required.
Its important to understand that an Advise() based subscription require bidirectional DCOM communication (settings to be made in both ends).