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Shadow function block interface for use in a process control network

  • US 7,519,083 B2
  • Filed: 05/18/2004
  • Issued: 04/14/2009
  • Est. Priority Date: 09/10/1998
  • Status: Expired due to Fees
First Claim
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1. A process control system comprising:

  • a first process control device executing a first function block; and

    a second process control device executing shadow function block, the second device communicatively connected to the first device;

    wherein an output of the first function block is mirrored to an output of the shadow function block, or an input of the first function block is mirrored to an input of the shadow function block.

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