DIAGNOSTIC TOOL USED IN PROCESS CONTROL SYSTEM, METHOD OF DIAGNOSING PROBLEM IN PROCESS CONTROL SYSTEM, AND FUNCTION BLOCK

摘要

PROBLEM TO BE SOLVED: To provide a diagnostic tool used in a process control system.

SOLUTION: The diagnostic tool collects and stores data indicative of a variability parameter, a mode parameter, a status parameter and a limit parameter associated with each of devices, loops or function blocks within the process control system, determines what device, loop or function block has a problem for lowering system performance by processing the collected data, displays a list of detected problems to an operator and suggests use of other diagnostic tools to further pinpoint or correct the problems.

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