西门子S7-400的PLC,用VB来进行数据采集.将PLC里的书进行读写.来自德国的技术.-Siemens S7-400 of the PLC, using VB to carry out data collection. The PLC to read and write in the book. Technology from Germany.

北京科技大学讲解的PLC--S7-200视频信息列表，多多指教，我也是刚开始，总结了一下-Lecture at Beijing University of Science and Technology PLC- S7-200 video list of the exhibitions, I am also the beginning, summed up what

该系统是为备煤系统所开发的自动配料控制系统，其中的核心控制部分采用了西门子公司的S7-200 CPU226，变频部分采用了西门子公司的变频器MX420。-The system was developed for the coal preparation system, automatic batching control system, which uses the core control part of the Siemens S7

通过C#实现串口编程通讯，供大伙学习参考，不用谢，不客气(You are welcome ,Don't mention it .Do you miss me ,I like you very mach.)