Apparatus and method for controlling a system process

Details Apparatus and method for controlling a system process Apparatus and method for controlling a system process

1991-04-02

1994-10-11

Shaw, Gareth D.

Boots, shoes, and leggings

364DIG2, 3649172, 364131, 364138, 364147, G06F 900

Patent

active

053554825

ABSTRACT:
A process controlling method uses a flowchart language program and ladder programs with an intermediate register to be accessible with the same name by both the flowchart language program and the ladder programs. Each ladder program defines the operation of a machine, including an interlock condition or the like of the machine operation. The flowchart language program defines an automatic operation flow which sequentially activates the ladder programs using the data in the intermediate register. This arrangement allows the flowchart language program to be separated from the ladder programs, thereby improving productivity, serviceability and security of the programs.

REFERENCES:
patent: 4742443 (1988-05-01), Rohn et al.
patent: 4941081 (1990-07-01), Kumar et al.
patent: 5005152 (1991-04-01), Knutsen
patent: 5042002 (1991-08-01), Zink et al.
patent: 5068778 (1991-11-01), Kosem et al.
patent: 5097405 (1992-03-01), Sato
Yaskawa, 1989, "Control Pack CP 3300".

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