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System for providing data communications between a plurality of measurement data generating/receiving modules connected to a common communication bus

  • US 5,371,859 A
  • Filed: 07/20/1992
  • Issued: 12/06/1994
  • Est. Priority Date: 01/22/1990
  • Status: Expired due to Term
First Claim
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1. A system for providing data communications between a plurality of measurement data generating/receiving modules connected to a common serial communication bus, and for assigning access priority for message data structures generated by each module, comprising:

  • a master station connected to said serial communication bus, said master station generating one or more predefined message statements with a predefined priority for transmission to said modules, said predefined priority identifying to each connected module an access priority for each message data structure which is generated or received by a connected module;

    means at each module for receiving said message statement(s) and decoding said message statement(s), said message statement(s) including priority and identification information which defines for a module the priority of a message data structure which is to be transmitted or received by said module over said serial communication bus, and identifies to other modules which may receive the message data structure the priority of said message data structure; and

    ,transmission means at each module for obtaining access to said serial communication bus at said priority each time a respective module unit needs to transmit said message data structure.

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