The Research And Realization Of Supervisory And Control Software Based On OPC Client

This paper mainly discusses the research and development of supervisory and control software based on OPC client. Foreign similar software is of high quality, while it is expensive and the technical detail is kept as a secret. The domestic corresponding software still needs a big improvement in the function openness and fildelity. How to develop new industrial control software with our own-patent and characteristics is a research topic of great meaning. Specially, it is critical to realize integration of distributed and isomerous system which is close in system software and is bad interoperability.On the basis of requirements of industrial supervisory, this paper researches and develops a suit of supervisory and control software based on OPC client with subsystems in isomerous system acting as providers of datum, which orients administrators in enterprises and has stated functions and good openness. It solves the difficultly in integration of isomerous system. The thesis focuses its work on researching and realizing to configure data source of OPC servers registered in the computer network, and frame Real-time Database.Via the research of OPC Data Access Standard, this thesis brings forward a kind of designing method of client supervisory and control programs based on OPC server on network, using the automation interface and API technology, realizes the configuration component of OPC server on network and simple client programmer based on OPC.