自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 9    No. 3    September 2002

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Hierarchical hybrid control network design based on LON and
master-slave RS-422/485protocol
PENGKe(彭可),CHEN Ji-da(陈际达), CHENLan(陈岚)

College ofInformation Science and Engineering,Central South University,Changsha410083,China

Abstract:Aiming at the weaknesses of LON bus, combining the coexistence of fieldbus and DCS (Distributed Control Systems) in control networks, the authors introduce a hierarchical hybrid control network design based on LON and master-slave RS-422/485 protocol. This design adopts LON as the trunk, master-slave RS422/485 control networks are connected toLONas special subnets by dedicated gateways. It is an implementation method for isomerous control network integration. Data management is ranked according to real-time requirements for different network data. The core components, such as control network nodes, router and gateway, are detailed in the paper. The design utilizes both communication advantage of Lon Works technology and the more powerful control ability of universal MCUs or PLCs, thus it greatly increases system response speed and performance-cost ratio.

 

Key words: LON; fieldbus; master-slave RS-422/485 protocol; hierarchical hybrid control networks; router; gateway; networks integration

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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