Based On Opc Technology Open Dcs System Applications

An actuality is proposed in this paper, that the industry automation system is a close system at present, which the unified & normal open interface about software and hardware is absence. The background of a operating standard of the software for industry control of OPC specification is amply described in this paper, its main content, program configuration system and nuclear technology, its history and application and development are introduced. This paper expatiated emphatically that a OPC COM customize interface which is made use of connecting OPC component and OPC object, a OPC OLE automation interface which is made use of configuration and gathering /storing process data by End-User. The design and application are aimed at the OPC COM and OPC OLE interfaces based on implement and realizing the tache in the project of LTH-CIMS. These OPC interface are based on OLE/COM and DCOM of Microsoft sustained by Windows 95 and Windows NT. This paper gives things of the OPC Foundation Organization.In the master student project the Component Object Model as OPC nut technology and its applications detail about the realize, issuance and establish method of the COM component as well as the use of the thread rule model and accessing technology in database of the OPC server are studied; the program for OPC interface was accomplished, and its network test is performed; and then the development process of the I/ODLL in the OPC server was discussed.Investigation and application in the practice tache show that OPC is an OLE for process control, it affords a corporate communication standard for different developer on applied program. Flexibility of protocol conversion and incompatibility of integration between different software systems, etc. have been effectually solved. Consequently, the repeated exploitation are reduced in the integrated system, the automation system's opening capability areimproved. OPC specification will be a developmental aspect about process automation's communications normal for the future.