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Diagnostics in a process control system

  • US 6,557,118 B2
  • Filed: 03/08/2001
  • Issued: 04/29/2003
  • 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 adapted to control a process device during operation of a process, the diagnostic tool comprising:

  • a data collection unit configured to communicate with each of the multiplicity of function blocks 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 wherein the data is associated with an operating condition of each of the multiplicity of function blocks;

    a data analyzer that determines a value for the function block operating parameter for each of the 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 data; and

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

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