An idea of dual network SCADA system is proposed and the function design, implementation method and programming interface of dual network communication software are introduced.
提出了采用双网络结构的思想，并详细介绍了双网络通信软件的功能设计、实现方法及编程接口。
The principle of users programming for field communication protocol and the development of the software for graphics-oriented programming interface are described.
本文论述了现场通信协议用户可编程的原理，以及面向图形的可编程界面软件的开发。
At OPCClient, MFC and ATL realize the communication between OPCServer and OPCClient with the programming method of single interface and dual interface respectively.
在客户端MFC和ATL分别通过单接口和双接口的编程方法实现与OPC服务器的通信。
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