AN INPUT MANAGEMENT CIRCUIT PARTICULARLY FOR A PROGRAMMABLE AUTOMATON

摘要

Input or input/output management circuit for a process-control system such as a programmable controller. …The management circuit (12) includes a serialising element (20) provided with parallel inputs (19) connected to the input channels (15) by filtering and threshold elements (18). A serial output (21) of the serialising element is connected via a serial connection comprising an optocoupler (23) and a one-unit filter (25) for input or input/output management. ……