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Diagnostics in a process control system which uses multi-variable control techniques

  • US 6,615,090 B1
  • Filed: 02/07/2000
  • Issued: 09/02/2003
  • Est. Priority Date: 02/22/1999
  • Status: Expired due to Term
First Claim
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1. A diagnostic tool for use in a process control system having a multiplicity of function blocks wherein one of the multiplicity of function blocks is a multi-variable function block, the diagnostic tool comprising:

  • a data collection unit configured to communicate with each of the multiplicity of function blocks including the multi-variable function block to receive, on a regular basis during operation of the process control system, data pertaining to a function block operating parameter for each of the multiplicity of function blocks;

    a data analyzer that determines a value for the function block operating parameter for each of a number of times during operation of the process control system based on the received function block operating parameter data;

    a detector that detects a problem within the process control system based on the determined values of the function block operating parameter; and

    an output generator that creates a report indicating the detected problem.

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