Server vs Client

• Server: Provides data or services, Client: Request data or services.
• OPC Server is closer to hardware, OPC Client is closer to interface or control logic.

What is OPC Data Source Definition?

• Tells 800xA how to connect to external OPC Server.
• When configuring OPC Data Source Definition, the main key is to configure Adapter Identity inside Special Configuration tab.
• For example, ABB.AfwDsGenericTestAdapter.1 is a fake simulated OPC data source, useful for testing OPC connectivity.
• The general default adapter used is ABB.AdvDsOPCServerAdapter.1.