UEBERWACHUNGSEINRICHTUNG FUER EINE STEUERVORRICHTUNG

摘要

The invention concerns a device for monitoring a control unit including a safety chain. The invention calls for the monitoring device to have a testable switching device fitted with input and output terminals such that, from several such switching devices, a monitoring loop can be set up along which a continuous signal, in particular a continuous sequence of digital signals, can be passed to give a "digital stand-by current loop".