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该文对 COM技术中的连接点进行了简要的介绍.还介绍了 OPC数据采集中采用连接点技术,以实现 OPC服务器与 OPC客户的双向通信,提高数据采集效率.“,”This paper briefly introduces the connection point in COM and using the connection point to realizes two－ way communication between OPC server and OPC client in OPC data acquisition.This method can improve the efficiency of data acquisition.