Control system having an application function with integrated se

Details Control system having an application function with integrated se Control system having an application function with integrated se

1996-12-05

1999-09-14

Grant, William

Boots, shoes, and leggings

364146, 364186, 364187, 364188, G05B 1101

Patent

active

059532262

ABSTRACT:
A self diagnostic system is integrated into an application program for controlling a machine or process. The application program is comprised of various logical segments that have to be solved by a logic solving engine. The diagnostic program will annunciate an event when the application program cannot execute a desired response by monitoring certain preselected and marked segments of the application program and allocating memory to save the result. When an abnormal occurrence in these segments results in the desired event not occurring, the diagnostic system will determine what part of the logic expression controlling the event could not be completed. This information will be saved and used for annunciating the reason for the desired event not happening. The diagnostic system includes a special control module that is added to the application program. This module is implemented as either an instruction added to the marked logic segment that is to be monitored in the case of a ladder logic system or as a subroutine as part of other types of sequential control methods. The data is recorded automatically, without application programming.

REFERENCES:
patent: 4500951 (1985-02-01), Sugimoto et al.
patent: 4898263 (1990-02-01), Manske et al.
patent: 5276619 (1994-01-01), Ohara et al.
patent: 5485620 (1996-01-01), Sadre et al.
patent: 5511211 (1996-04-01), Akao et al.

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