Asynchronous coupling of data between a word-oriented i/o...

Details Asynchronous coupling of data between a word-oriented i/o... Asynchronous coupling of data between a word-oriented i/o...

G - Physics

06

F

342/21, 354/230.

G06F 9/06 (2006.01) G05B 19/05 (2006.01) G06F 3/00 (2006.01)

Patent

CA 1096508

Abstract of the Disclosure A programmable controller includes a controller processor which operates in response to a control pro- gram 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 opera- tion of a stepping motor and an analog output module is described which converts a digital number in such com- mand words to an analog output signal.

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