基于LIBNODAVE的上位机与西门子PLC的通信

Communication between SIEMENS PLC and a LIBNODAVE-based monitor software

本文在国内首次报道了基于LIBNODAVE的PC端的上位机监控软件与西门子PLC的通信方法。给出了基于VB的上位机监控软件的与S7-300系列PLC进行网络通信的实现方案。分析及测试结果表明,这种上位机实现方法是一种可行、低成本、可拓展性强的设计方案。

A method for a LIBNODAVE-based monitor software on a PC to communicate with SIEMENS PLC is reported for the first time at home in this paper. An instance using VB to develop the user interface of the monitor software to communicate with a S7-300 CPU via Ethernet is given. The analysis and test results show that this method is feasible,low cost and has good expansibility.