The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1996
Filed:
Jan. 08, 1993
Yasunobu Iwata, Aichi, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A sequence controller with error correction and a sequence controlling method are disclosed. The sequence controller is provided with a stop-time operation execution table, which stores stop-time execution step numbers and resumption-time execution step numbers. These step numbers correspond to step numbers at which a stop is expected to occur in a sequence control program for sequence-controlling a controlled object. According to the sequence controlling method, the execution of the sequence control program is stopped at the occurrence of an error, the stop-time execution step number corresponding to the stop-time step number is read from the stop-time operation execution table, a step having the step number read is executed, the resumption-time execution step number is read, and the execution is resumed from that step. As a result, error processing can be performed by only specifying a step number, the error processing need not be described in the program, and programs can be written, revised and reviewed easily.