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Real-time Communication using Foundation Fieldbus
Zhou Y(周悦); Wang Z(王智); Wang TR(王天然); Yu HB(于海斌)
Source PublicationFieldbus Technology
ContributorDr. Nitaigour Premchand Mahalik
PublisherSpringer Verlag
Publication PlaceBerlin
AbstractLocal area networks (LANs) are becoming popular in industrial computer-controlled systems increasingly. Broadcast LANs aimed at the interconnection of sensors, actuators and controllers are commonly known as fieldbus networks. Recently, the vendor-specific fieldbus has being substituted by vendor-independent standardized fieldbus, which supports the open system concept and has started to be used commonly. Particular relevance must be given to the IEC 61158 (1999), which encompasses eight widely used fieldbuses: FF H1, ControlNet, PROFIBUS, P-NET, FF HSE, SwiftNet, WorldFIP and Interbu (Xiuju 2000; Xiong 2000) known that time constraints are more stringent as we go down in the automation hierarchy. In this charter, we consider time constraints or deadlines as the maximum allowable time span between a message transfer request and its transmission on the bus. In fact, the total message cycle delay results from multiple factors, such as the access and queuing delays, the transmission time (frame length / transmission rate) and the protocol processing time. As we are dealing with real-time communication across a shared transmission medium, we focus our analysis on the access delay and queuing delay factors. These factors depend on the MAC (Medium Access Control) mechanism used by the fieldbus network.
Contribution Rank1
Document Type专著章节/文集论文
Corresponding AuthorZhou Y(周悦)
AffiliationShenyang Institute of Automation, Chinese Academy of Sciences, No. 114 Nanta Street, Dongling District, Shenyang City, Liaoning Province, P.R. China, 110016
Recommended Citation
GB/T 7714
Zhou Y,Wang Z,Wang TR,et al. Real-time Communication using Foundation Fieldbus. Fieldbus Technology. Berlin:Springer Verlag,2003:311-331.
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