Programmable controller with integral microprocessor

Details Programmable controller with integral microprocessor Programmable controller with integral microprocessor

G - Physics

05

B

354/230.3

G05B 11/01 (2006.01) G05B 19/02 (2006.01) G05B 19/05 (2006.01) G06F 9/06 (2006.01)

Patent

CA 1103364

PROGRAMMABLE CONTROLLER WITH INTEGRAL MICROPROCESSOR Abstract of the Disclosure An eight-bit microprocessor sequentially reads controller type instructions from a memory and applies the operation codes of selected ones of the instruc- tions to a hardwired Boolean processor. The micro- processor also couples status words between an I/O image table stored in the memory and the I/O interface racks which connect the programmable controller to the machine being controlled. In general, those controller type instructions which are word oriented are executed by the microprocessor and those which are single-bit oriented are executed by the Boolean processor. The Boolean processor is operable in combination with the microprocessor to examine selected status bits in the I/O image table and to set selected status bits therein to a logic state which is deter- mined in part by the state of the examined status bits.

294998

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