Sequence control system employing a plurality of programmable lo

Details Sequence control system employing a plurality of programmable lo Sequence control system employing a plurality of programmable lo

1986-11-12

1988-06-14

Williams, Jr., Archie E.

Boots, shoes, and leggings

G06F 300

Patent

active

047516720

ABSTRACT:
A sequence control system employing a plurality of programmable logic controllers, each having the same construction and being linkedly connected, can perform complicated sequence control resulting from executing an overall user program based on that of each programmable logic controller while exchanging necessary input/output data; each of the programmable logic controllers can also perform sequence control by itself.

REFERENCES:
patent: 4162536 (1979-07-01), Morley
patent: 4176395 (1979-11-01), Evelyn-Veere et al.
patent: 4319338 (1982-03-01), Grudowski et al.
patent: 4354226 (1982-10-01), Flickinger et al.
patent: 4477882 (1984-10-01), Schumacher et al.
patent: 4667323 (1987-05-01), Engdahl et al.
patent: 4680753 (1987-07-01), Fulton et al.

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