Design of OPC Server Model Based on EPA

The interoperation problem of field device based on Ethernet for plant automation(EPA) and the other field standards is analyzed,and the characteristics of OLE for process control(OPC) are studied.Based on the analysis,OPC server based on EPA is designed and introduced.Furthermore,data-collection of the remote supervised system based on OPC,OPC client,interacts with the OPC server to read data from the field device.The result indicates the practicability of the design.