摘要
Profibus-DP总线在工业现场控制系统中应用非常广泛,为了提高系统的可靠性,工业控制系统多采用冗余双网Profibus-DP总线通信,当一条Profibus-DP总线出问题时,Profibus-DP系统可以利用冗余双网切换逻辑切换到另一条Profibus-DP总线运行,该切换逻辑基于CPLD,实现了Profibus-DP冗余双网通信的硬件切换机制。
The application of Profibus-DP bus is very popular in industrial control systems.In order to improve system reliability,industrial control systems often adopt dual redundant Profibus-DP communications.When one Profibus-DP bus fails,the Profibus-DP system can switch to the other Profibus-DP bus through dual redundant network switch logic.This switch logic implements hard switch of Profibus-DP dual redundant communications based on CPLD.
出处
《测控技术》
CSCD
北大核心
2011年第2期83-85,共3页
Measurement & Control Technology
