摘要
微机联锁系统中,一般是将联锁置于上位机中,这样安全性、可靠性得不到保障。文中用西门子S7-400HPLC完成联锁功能,构成PROFIBUS-DP/MPI分布式网络系统,这样整个联锁系统安全可靠。通过介绍DP/MPI网的概念和实现,结合唐山钢铁公司焦化站联锁实例,着重阐明用PLC实现DP/MPI网络,以解决该联锁系统中分布式输入输出等。经现场调试、安装,整个网络运行良好,安全可靠地实现和完成车站信号联锁系统的联锁功能,应用前景很好。
Generally,interlocking system can be rapidly set in up_computer in microcomputer interlocking system.This can't guarantee the safety and reliability of the system.This problem can be settled by using SIEMEN's S7-400H PLC,which constitutes PROFIBUS-DP/MP distributed network system and finish interlocking function.Firstly,this paper introduces the concept and realization of DP/MPI network.Secondly,the author takes an example of the Jiaohua Station of Tangshan Steel Company to illustrate the realization of DP/MPI network by using PLC.The network settles the problem of distributed input output in interlocking system.It runs well and completes interlocking function.It is prospective that using PLC to achieve interlocking function in signal interlocking station system.
出处
《微机发展》
2004年第10期97-99,共3页
Microcomputer Development
