Flowchart exception handling element
AssigneeSteeplechase Software, Inc.
InventorsChuck E. Kallal, Mike W. Messick, Kevin P. Aretha, Jason A. McLees, David J. Gee, Richard L. Mahn, Don C. Stokes
Life of this patent
Estimating the term…
Abstract
A software logic controller using flowchart programming includes exception handling elements for handling exception conditions in a manufacturing process. Exception handling is programmed using a Begin Exception element to start monitoring the occurrence of a specific exception condition and an End Exception element to stop the monitoring process. Monitoring is conducted once during every scan cycle of the computer as long as the Begin Exception element is still active.
Claims20
A system for handling exceptions in a process controlled by a flowchart programmed software logic controller, the system comprising:
- means for receiving parameters relating to an exception condition in the process;
- means for beginning an exception condition monitoring state for detecting the occurrence of the exception condition based on the parameters received by the receiving means;
- an exception exit associated with the beginning means, wherein the exception exit is executed if the exception condition is detected;
- means for ending the exception condition monitoring state, wherein the ending means corresponds to the beginning means.
A method for handling exceptions in a process controlled by a flowchart programmed software logic controller, the method comprising:
- receiving parameters relating to an exception condition in the process;
- beginning an exception condition monitoring state for detecting the occurrence of the exception condition based on the parameters received by the receiving means;
- defining an exception exit associated with the beginning means, wherein the exception exit is executed if the exception condition is detected;
- ending the exception condition monitoring state, wherein the ending means corresponds to the beginning means.
A computer implemented software system used for handling exceptions in a process controlled by a flowchart programmed software logic controller, comprising the steps of:
- receiving parameters relating to an exception condition in the process;
- beginning an exception condition monitoring state for detecting the occurrence of the exception condition based on the parameters received by the receiving means;
- defining an exception exit associated with the beginning means, wherein the exception exit is executed if the exception condition is detected;
- ending the exception condition monitoring state, wherein the ending means corresponds to the beginning means.
A computer readable storage device containing software used to control a flowchart programmed software logic controller, the software comprising the steps of:
- receiving parameters relating to an exception condition in the process;
- beginning an exception condition monitoring state for detecting the occurrence of the exception condition based on the parameters received by the receiving means;
- defining an exception exit associated with the beginning means, wherein the exception exit is executed if the exception condition is detected;
- ending the exception condition monitoring state, wherein the ending means corresponds to the beginning means.
Dependencies are inferred from the claim text.