A Design And Realization Of The Web Server Based On FCS

The presence and development of fieldbus has brought an involution in industry control field. With its digital, distributed and open character, fieldbus has been a hot issue in control field. The control system based on fieldbus is replacing traditional control system, and represents the orientation of advanced control system.OLE for Process Control (OPC), which is the application of Microsoft's Object Linking and Embedding (OLE) technology in process control system, is the standard interface protocal for connecting the data sources with the client application of the process control. It can greatly inhance the interoperability among control systems, field devices and business applications in the process control industry. In the past, in order to get the data information of the devices from field devices, every application software developer has to write special interface function. Because the variety and unceasing update of the field devices, it brings heavy burden to user and software developer. OPC-based client/server model puts OLE/COM/DCOM mechanism as communication criterion, and it assigns the mission of developing access interface that is provided to user as OPC server to hardware manufacturer or third party. It resolves the contradiction between software developer and hardware manufacturer and realizes the system integration. It can inhance the openness and interoperability of the system.From the development status of the Fieldbus Control System (FCS), this paper designs and realizes Web server for the topper computer of the system, the operation station of the system, to satisfy with the goal of the topper computer's function extending, with compling with the structure's standards of FCS, implementing the functions of production control by the brainpower instrument, and implementing the functions of surveillance, control and administration still by configuration software. The function extending is completed by the two function controls in Web server, MMBIDE and MMBServer. The function of MMBIDE is to realize the configuration download, the parameter up-send, the...