Programmable controller input module

Details Programmable controller input module Programmable controller input module

1989-05-31

1990-01-23

Chan, Eddie P.

Boots, shoes, and leggings

36492693, 36492799, 3649269, 364949, 3649427, 3649411, 364565, 364569, 364142, 36416701, 318603, G06F 300, G06F 302

Patent

active

048962880

ABSTRACT:
A high-speed input module for a programmable controller has two sensor inputs, one for receiving an indication of a sensed event and another or receiving an indication as to whether the count of such events should be incremented or decremented. Each input is coupled to a separate data latch which temporarily stores the respective indication. The output of the sensed event latch is connected to an interrupt line of the programmable controller. A shift register has a separate parallel input connected to the output of each latch and has a serial output for connection to a data input terminal of the programmable controller. The shift register transfers the sensed indications to the controller in response to clock signals received from the programmable controller.

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