S7—200系列PLC与监控计算机通讯的几种实现方法

Several Implement Methods of Communication between S7-200 PLC and Supervisory Computer

针对控制系统中上位机与S7—200系列PLC通讯的实际问题，总结了几种监控计算机与S7—200系列PLC实现数据通讯的方法。实际应用表明，这些方法分别在不同的控制环境中能较好地解决它们之间的数据通讯问题。

Aiming at the specific problem of communication between the host computer and S7-200 PLC in control system, several data communication methods between the supervisory computer and S7-200 PLC are proposed in this paper. The application shows that these methods satisfactorily resolve the data communication problem between them in different controlling environments respectively.