Process control system with analog output control circuit

Details Process control system with analog output control circuit Process control system with analog output control circuit

1977-12-30

1979-05-15

Ruggiero, Joseph F.

Boots, shoes, and leggings

364103, 364600, 364900, G06F 1546

Patent

active

041551150

ABSTRACT:
An analog output control circuit provides an arrangement whereby digital data from the control computer is supplied simultaneously to a number of output boards along with address data for selecting a particular one of the several boards. Logic control means is provided for responding to an address code for enabling the selected board. Additional control logic is provided for responding to control signals from the computer for selecting a particular one of the several output units included on the output circuit board. Control logic is also provided to prevent the output units from being changed in the absence of logic control or power supply.

REFERENCES:
patent: 3243582 (1966-03-01), Holst
patent: 3443074 (1969-05-01), Schmid
patent: 3493731 (1970-02-01), Lemonde
patent: 3761689 (1973-09-01), Watanabe et al.

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