Method of simulating a sequential control for analyzing a produc

Details Method of simulating a sequential control for analyzing a produc Method of simulating a sequential control for analyzing a produc

1990-12-21

1992-12-22

Lall, Parshotam S.

Boots, shoes, and leggings

364147, 395500, G06F 1520, G05B 902

Patent

active

051738694

ABSTRACT:
A method of simulating a sequential control program by composing simulation ladder program elements with timer elements which correspond to the ladder program elements of the sequential control program. If the operations of a plurality of operation steps are performed in parallel with each other, a time chart is prepared by considering the parallel relationships between the operation steps, and simulation elements are thereafter formed in execution order in accordance with the timing chart.

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patent: 4247901 (1981-01-01), Martin et al.
patent: 4455619 (1984-06-01), Masui et al.
patent: 4742443 (1988-05-01), Rohn et al.
patent: 4858101 (1989-08-01), Stewart et al.
patent: 4991076 (1991-02-01), Zifferer et al.

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