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Methods and apparatus for integrated display of process events and trend data

  • US 7,023,440 B1
  • Filed: 08/23/1999
  • Issued: 04/04/2006
  • Est. Priority Date: 09/14/1998
  • Status: Expired due to Term
First Claim
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1. A method for displaying process information in a process control and/or monitoring system comprising a workstation having a display screen, a controller and an I/O subsystem, said workstation executing the steps of:

  • generating and displaying on the display screen a trend chart containing values of one or more selected process parameters during a selected time window based on a user-defined trend chart configuration; and

    generating and displaying on the display screen an event table containing information describing process events that are related to the selected process parameters and that occurred during the selected time window, such that the event table and the trend chart may be viewed on the display screen at the same time.

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