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AssigneeRockwell Automation Technologies, Inc.
InventorsRobert Guenther, Steven A. Zuponcic, Kenwood H. Hall
Estimating the term…
A system for troubleshooting control programs employs an event log that captures the values of inputs to outputs from the control program only at event times determined by changes in input or output data. The program allows the event log to be reviewed in jumps to only events which cause a change in output value of an instruction or particular change in output value of a particular instruction, greatly simplifying the troubleshooting process. The event log records a particular instruction instance associated with the event permitting the operation of the program to be studied in reverse order. The event log may also record a timestamp of the event allowing time stamped data from different devices to be synchronized with the review of the events.
A computer program for troubleshooting a control program of a type comprised of instructions receiving input data from variables of the control program and measurements of physical inputs from an industrial process and providing output data to variables of the control program and output signals controlling the industrial process, the computer program fixed in a nontransient computer readable medium for execution on an electronic computer to:
The program of claim l wherein the program communicates with a program log providing a list of events recording changes of physical inputs from the industrial process only at times of change of the physical inputs.
A program for troubleshooting a control program comprised of instructions receiving data from variables of the control program and measurements of physical inputs from an industrial process and providing outputs to variables of the control program and output signals controlling the industrial process, the program fixed in a non-transient computer readable medium for execution on an electronic computer to:
A method of troubleshooting a control program of a type comprised of instructions receiving input data from variables of the control program and measurements of physical inputs from an industrial process and providing output data to variables of the control program and output signals controlling the industrial process, the method employing an electronic computer executing a stored computer program and comprising the steps of:
Dependencies are inferred from the claim text.