摘要
现场总线控制系统FCS是现代工业控制网络的发展方向,现场总线的媒体控制层(MAC层)在很大程度上决定了网络的实时性和可靠性.在此介绍了LonWorks(LocalOperatingNetworks),CAN(ControlAreaNetworks),FF(FoundationFieldbus),PROFIBUS(ProcessFieldbus)4种现场总线的MAC层实现方式,并对MAC层两大体系:载波监听多路访问(CSMA)和令牌环/令牌总线进行了对比探讨.
FCS is the developing direction of the modern industrial control network.MAC layer of the fieldbus determines the real-time character and dependability of network to a great extent.This text recommends 4 kinds of realizing ways for MAC layer of the fieldbus such as LonWorks(Local Operating Networks),CAN(Control Area Networks),FF(Foundation Fieldbus),PROFIBUS(Process Fieldbus),and compares the MAC layers of two major systems ie.CSMA and the token-ring/token-passing bus.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2005年第1期129-132,共4页
Journal of Guangxi Normal University:Natural Science Edition
