Programmable controller with hardwired backup connecting termina

Details Programmable controller with hardwired backup connecting termina Programmable controller with hardwired backup connecting termina

1976-08-09

1978-09-26

Atkinson, Charles E.

Registers

Systems controlled by data bearing records

Time analysis

2353033, 364114, 364119, G06F 900

Patent

active

041173171

ABSTRACT:
A controller of the data processing type including a memory programmable to adapt it to a wide variety of industrial machine and process control applications includes terminals permitting a hardwired logic circuit to be connected with the controller to supplement or improve its control functions. In particular, the hardwired logic backup may act as a redundant safety circuit responding to certain danger signals from the controlled process or may be used to enhance the response time or other characteristics of the controller in certain situations.

REFERENCES:
patent: 3503048 (1970-03-01), Avsan et al.
patent: 3665172 (1972-05-01), Spaargaren et al.
patent: 3786433 (1974-01-01), Notley et al.
patent: 3829668 (1974-08-01), Noumi et al.
patent: 3875390 (1975-04-01), Eccles et al.
patent: 3882304 (1975-05-01), Walters
patent: 3882406 (1975-05-01), Graves et al.
patent: 3931500 (1976-01-01), Berkebile et al.
patent: 3931505 (1976-01-01), Sevcik

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