Importance

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Abstract

A System and a method are provided for the monitoring of a control process in a process plant such as a power generation plant. The process plant contains a plurality of plant items to be controlled, such as valves, pumps, turbines and so forth. At least some of these have sensors attached to them which output a digital (binary) or analog signal indicative of the status of that plant item. Many plant items also have control actuators for shutting and opening the valve, for example. The plant item sensor outputs are connected to a network and a control algorithm representing the control logic of the process plant processes the sensor outputs. The output of one of a plurality of control functions forming the control algorithm is selected to begin a fault tracing procedure. The control logic forming the control algorithm is visually displayed on a computer monitor. The selected control function output is traced back to its source via the control algorithm shown on the computer monitor to identify the root cause of a fault.

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First Claim