The Development And Research Of OPC Data Access Server Version 3.0

OPC(OLE for Process Control) is a kind of industry standard aiming at spot controlsystem and developed recent years.It can provide efficiently information integration andexchange function during industry application based on Windows operating platform.Thearticle begins with introducing the producing background and development of OPCtechnique, then discusses what OPC DA custom interface 3.0 specification is superior toprevious version and theory foundation and the method of design of OPC server, finallyin detail introduces how to use WTL to design the OPC Data Accesss Custom InterfaceV3.0 Server,and the test of OPC server program is also made,thereinto including the testof OPC server program that applies to ADAM-4017 data acquisition module.In additionthe article also introduces OPC Data Access Automation Interface V2.0 Server thatsupports automation interface.