Hi,
I want to know about using OPC server vs. ActiveX drivers.
My target is to know witch way is better:
1. Using OPC server through C# or Vb.Net
2. Using ActiveX drivers in C# or Vb.Net

I'll use one of the ways to manipulate SCADA system with my department.
I want to check; light system, communication stress, and all the aspects with SCADA systems.

Regards...

 

We use OPC (as a substitute for custom drivers or proprietary protocols) to connect controllers to client applications like SCADA front ends or historians. We use ActiveX to provide new or improved functionality within those client applications. Although I can imagine system communications applications for ActiveX (the obvious case being automatic screen refreshes of web-based remote monitoring applications), the two technologies are not generally interchangable.

Joe Hohn