摘要
在工业自动化领域,尤其是通信方面,复杂的现场环境造成了很多信号干扰问题,对设备的正常运行带来了极大危害,因而研究提高信号传输的可靠性是自动化控制领域亟待解决的问题。本文介绍了武汉联华电气有限责任公司自主研发的通信服务器LH_TX02,使用该服务器与下位机VersaMax PLC的通信模块(即CPU模块)通信,这种通讯编程思想提高了信号传输的可靠性和系统的抗干扰能力。实际工程运用结果表明,采用了LH_TX02通信服务器,并在PLC梯形图程序中加入通信判断程序后的水电站自动化系统运行良好,值得推广。
In the field of industrial automation,particularly with regard to communications,sophisticated spot is causing a lot of signal interference problem,bring great harm to the normal operation of the equipment,thus research to improve signal transmission reliability are problems to be solved in the field of automatic control.This article describes the Lianhua Electric Co.,Ltd.,Wuhan self-developed communication server LH_TX02,use the server and the next crew VersaMax PLC communication module （ie CPU module） to communicate,this communication programming improves the reliability of signal transmission and system anti interference.The results showed that the use of the actual project,using a LH_TX02 communication server and the PLC ladder program after adding communication procedures for determining in Hydropower station automation system is running well,worthy of promotion.
出处
《电子设计工程》
2014年第6期121-123,共3页
Electronic Design Engineering
关键词
工业自动化
通信服务
PLC
抗干扰
industrial automation
communication service
PLC
anti-interference
