华电技术 ›› 2012, Vol. 34 ›› Issue (9): 21-22.

• 研究与开发 • 上一篇    下一篇

电磁干扰造成PLC总线通信报错的实例分析

肖江凯   

  1. 浙江华电环保系统工程有限公司,浙江杭州310012
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-09-25 发布日期:2012-09-25

Analysis on practical example of PLC bus communication error caused by electromagnetic interference

XIAO Jiangkai   

  1. Zhejiang Huadian Environment Protection System Company Limited, Hangzhou 310012, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-09-25 Published:2012-09-25

摘要: 论述了安徽平圩电厂可编程控制器总线系统通信异常报错的现象,通过硬件及软件检测分析,确定了通信报错的原因是电磁干扰。分析了产生电磁干扰的原因,给出了具体的解决方法,供处理类似问题时参考。

关键词: RI/O总线, 可编程控制器, 通信报错, 电磁干扰

Abstract: The abnormal communication error of PLC bus system in Anhui Pingwei Power Plant was described. According to the detection and analysis of hardware and software, it is determined that the reason of the communication error is electromagnetic interference. The cause of the electromagnetic interference was analyzed; and the concrete solution was given, which provides reference for processing of similar problems.

Key words: RI/O (remote I/O) bus, PLC (programmable logic controller), communication error, EMI (electro-magnetic interference)