I know that this question has been asked probably 1000 times in the forum. But I am still a bit confused. I work with two types of SCADA, RSViewSE amd Wonderware InTouch. RSViewSE is an OPC client. Therefore if I chose, I could connect a controllogix PLC to RSView using the RSLinx OPC server in RSLinx Pro. Wonderware InTouch, however, is not an OPC client. Therefore, I have to use OPCLink to connect to an OPC server such the RSLinx OPC server (not the I/O driver). OPCLink is a suitelink-to-OPC converter. Am I on track? Now, if I want to use RSView or Wonderware tags in another application that is an OPC client, I must use an OPC server that has the capability to browse these tags such as RSOPC Gateway (for RSViewSE) or TopServer (for Wonderware). Please let me know if I am close to being on track. Thanks.