Asynchronous coupling of data between a word-oriented I/O module

Details Asynchronous coupling of data between a word-oriented I/O module Asynchronous coupling of data between a word-oriented I/O module

1976-06-14

1978-08-01

Nusbaum, Mark E.

Boots, shoes, and leggings

G06F 906, G06F 300, G06F 1546

Patent

active

041047311

ABSTRACT:
A programmable controller includes a controller processor which operates in response to a control program to transfer command words stored in a data table to an input/output image table in the controller memory. An input/output scanner circuit operates asynchronously with respect to the controller processor to couple command words in the output image table to one or more of a plurality of word-oriented I/O modules and to couple command words from an I/O module to the input image table. A pulse module is described for receiving such command words and controlling the operation of a stepping motor and an analog output module is described which converts a digital number in such command words to an analog output signal.

REFERENCES:
patent: 3793625 (1974-02-01), Pomella et al.
patent: 3829842 (1974-08-01), Langdon et al.
patent: 3909891 (1975-09-01), Tokura et al.
patent: 3942158 (1976-08-01), Dummermuth
patent: 3961200 (1976-06-01), Dute

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