custom program
1.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.
3.Aiming at the data exchange between custom application and DCS realtime database in Distributed Control System (DCS), this paper presents three approaches and related technologies for application program to directly access DCS realtime database. Corresponding software realization based on typical Honeywell PlantScape system SCADA software is given in detail.
