Patent Document ID: 8489209
Application ID: 13357413
Patent Flag: 1

Claim One:
1. A method performed by a computer for analyzing one or more of a plurality of control loops of a control system operable to control a process, the control loops each having a controller, a final control element and a measurement device for providing the controller with a measurement of a process variable being controlled by the controller, the method comprising: receiving, from a user, a selection of one of the control loops for analysis; generating an assessment for a pre-defined key performance indicator (KPI) for each of first, second and third sections of the selected control loop, the first section relating to the controller of the selected control loop, the second section relating to the process and the final control element of the selected control loop and the third section relating to the measurement of the process variable of the selected control loop; displaying, in a single screen of a graphical user interface (GUI) of the computer, at least two different types of control data of the selected control loop, the types of control data being selected from the group consisting of the measurement of the process variable, output of the controller, set point of the controller, proportional tuning parameter of the controller, integral tuning parameter of the controller and error, which is the difference between the set point of the controller and the measurement of the process variable; displaying, in the single screen of the GUI of the computer, the generated assessments of the pre-defined KPIs for the selected control loop; receiving, from a user, a different assessment for one of the KPIs for the selected control loop; and displaying, in the single screen of the GUI of the computer, the received different assessment of the one of the pre-defined KPIs for the selected control loop in lieu of the generated assessment for the one of the pre-defined KPIs for the selected control loop.