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Windows based network configuration and control method for a digital control system

  • US 6,095,674 A
  • Filed: 11/18/1998
  • Issued: 08/01/2000
  • Est. Priority Date: 10/16/1995
  • Status: Expired due to Term
First Claim
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1. A method of controlling a passing procedure of a token in a Fieldbus network, the Fieldbus network including a control computer and a plurality of field mounted devices coupled together by a Fieldbus, the token representing an authorization to initiate a bus transaction, the method comprising the steps of:

  • segmenting a passing schedule of the token into at least two segments;

    storing a first schedule segment of the at least two segments in a first device of the field mounted devices;

    storing a second schedule segment of the at least two segments in a second device of the field mounted devices;

    operating the first field mounted device to;

    I) monitor for an indication of a control computer failure;

    ii) when the control computer failure is detected, controlling the passing procedure of the token according to the first schedule segment.

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