摘要
该文介绍了一种应用广泛的通信协议OPC规范及其运行机制。并根据OPC Data Access2．05规范，采用自动化接口方式，描述客户端程序的开发方法，同步读写服务器端数据。不断完善的OPC技术将成为许多领域通信标准的发展方向。
This paper introduces the OPC technology, and it＇s communication principle. The typical frame of OPC application program is also introduced. The OPC client is exploited that communicates with OPC server through OPC automation interfaces with OPC 2.05 specification, and client data acquisition is implemented. It is pointed out that OPC technology will be the direction of the development of communication standard for many fields besides process control.
作者
吴姮
WU Heng （University of Shanghai for Science and Technology,Shanghai 200093,China）
出处
《电脑知识与技术》
2009年第4期2769-2770,共2页
Computer Knowledge and Technology
基金
上海市优秀青年教师专项基金资助项目（571195）
关键词
OPC
数据存取规范
COM
通信协议
OPC
Data access specification
COM
Communication principle
