Development of OPC Server Based on WIA-PA

The paper discussed developing process and concrete realizing steps of OPC server based on WIA-PA,and introduced how the OPC server sent data collected by meters in industrial field to upper computer for real-time display by an example of connecting OPC client software with temperature sensor.The testing result showed that the OPC server can add field devices in normalization,update data of devices,and make OPC clients obtain monitored data real-timely.