C++ Builder下S7-200 PLC与计算机的通信  

Communication between S7-200 PLC and Computer under C++ Builder Environment

作　　者：许其义[1] 武玉强[1] 姜秀萍[2] 李坤[1] 

机构地区：[1]曲阜师范大学自动化研究所 [2]曲阜师范大学数据科学学院,日照276826

出　　处：《自动化仪表》2007年第1期57-60,共4页Process Automation Instrumentation

摘　　要：研究了在C++Builder开发环境下如何实现S7-200 PLC与上位计算机基于自由口模式通信的问题,通过详细分析自由口模式下通信协议的自定义及其实现方法,实现了过程控制系统中S7-200 PLC与上位机自由口模式通信,结合实例说明了通信过程中数据处理的方法,并给出了关键程序和运行结果。实践证明,在C++Builder下实现S7-200 PLC与计算机基于自由口模式的通信简单实用,具有很强的推广应用价值。The issue of implementing communication between S7-200 PLC and computer by free port mode is studied based on C＋＋ Builder developing environment. By analyzing the self-defined communication protocol and its implementation method under free port mode, the communication between S7-200 PLC and host computer is realized for industrial process control system. The data processing method in procedure is described with practical examples, and the critical program and the operating results are given. The practice proved that communication between S7-200 PLC and the computer under C＋＋ Builder based on the free port mode is simple and applicable, it is worth to be promoted.

关 键 词：自由口 通信协议 数据处理 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]