Sequence controller with dynamically changeable program

Details Sequence controller with dynamically changeable program Sequence controller with dynamically changeable program

1977-12-12

1979-02-27

Springborn, Harvey E.

Boots, shoes, and leggings

G06F 906

Patent

active

041422465

ABSTRACT:
By storing, along with each signal or bit controlling a step to be taken in a process sequence, an additional signal or bit to be applied to the gating terminal or pin of respective ones of a plurality of "and" gates, to the other input terminal of each of which is supplied its respective input signal from aprocess control element, such as a sensor, switch or valve (each such input signal indicating a changed condition in the process which requires a changed process control sequence) any sequence may be interrupted following any step in that sequence and a new sequence may be called up to make the needed correction or change in the process.

REFERENCES:
patent: 3289168 (1966-11-01), Walton et al.
patent: 3334334 (1967-08-01), Halpin
patent: 3611311 (1971-10-01), Andrews
patent: 3760369 (1973-09-01), Kemp
patent: 3911406 (1975-10-01), McLaughlin et al.
patent: 3991408 (1976-11-01), Holmes, Jr. et al.

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