Programmable controller

Details Programmable controller Programmable controller

1986-08-21

1988-02-16

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 1546

Patent

active

047259760

ABSTRACT:
In a programmable controller, logical operation between I/O data are performed in accordance with each instruction of a user program optionally set by the user, and simultaneously output data is updated in accordance with the result of its logical operation. The state of inhibiting the control output, at detection of an abnormality in the device at a particular control status, can be optionally set by the user as part of the user program. An abnormal signal of each controller is transmitted to each controller when a controller system of parallel link mode is constituted by plural sets, further whether intra machine control output action is inhibited or not by an abnormal signal from another machine can be optionally set by the user as part of the user program.

REFERENCES:
patent: 3996565 (1976-12-01), Nakao et al.
patent: 4063311 (1977-12-01), Jeremiah et al.
patent: 4095094 (1978-06-01), Struger et al.
patent: 4118789 (1978-10-01), Casto et al.
patent: 4200226 (1980-04-01), Piras
patent: 4213175 (1980-07-01), Kurihara
patent: 4251883 (1981-02-01), Grants et al.
patent: 4276593 (1981-06-01), Hansen

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