Combined input/output circuit for a programmable controller
Номер патента: CA1331797C
Опубликовано: 30-08-1994
Автор(ы): Ancil Bernard Cruickshank, Mark John Kocher, Michael Joseph Tuso, Ronald Eric Gareis
Принадлежит: GE Fanuc Automation North America Inc
Опубликовано: 30-08-1994
Автор(ы): Ancil Bernard Cruickshank, Mark John Kocher, Michael Joseph Tuso, Ronald Eric Gareis
Принадлежит: GE Fanuc Automation North America Inc
Реферат: COMBINED INPUT/OUTPUT CIRCUIT FOR A PROGRAMMABLE CONTROLLER ABSTRACT OF THE DISCLOSURE A combined input/output circuit is provided which is configurable either as in input circuit or an output circuit for use in a programmable controller. The input/output circuit includes apparatus which detects undesired overcurrent and overvoltage external conditions and adaptively protects itself from such conditions. The circuit includes a sensing circuit which is capable of sensing overcurrent conditions and detecting input data depending on the configuration of the input/output circuit. The inherent characteristics of a switching device used to configure the circuit in either an input or output state are used to detect overcurrent and to limit fault current.
METHOD AND DEVICE FOR CONTROLLING THE TRANSMISSION OF INFORMATION BETWEEN THE CENTRAL UNIT OF A PROGRAMMABLE CONTROLLER AND THE INPUT / OUTPUT CIRCUITS CONNECTED TO THE SENSORS AND / OR ACTUATORS OF THE CONTROLLED PROCESS
Номер патента: FR2547076B1. Автор: Olivier Penot,Jacky Pergent,Lionel Heitz,Jesse Quatse. Владелец: Telemecanique Electrique SA. Дата публикации: 1986-01-03.