| 摘要 |
PURPOSE:To obtain a system having reduced transmission lines by providing plural fault detectors which output recognizable pulse signals that are set in advance corresponding to the fault and a gate means which transfers the outputs of these plural fault detectors in a transmission line when a prescribed fault is detected at a monitor-objected equipment. CONSTITUTION:Each independent fault which is generated from the monitor- objected equipment is sent to fault detectors 21-2m by a fault transmission line 6. The fault detectors 21-2m output the signals of high levels when no fault is generated at the monitor-objected equipment 1 in normally. When some fault is generated at the fault transmission line 6, the content of the fault is discriminated by the fault detectors 21-2m. When the fault is recognized by each of the fault detectors 21-2m, negative pulses S1-Sm (low level) having each different pulse width are outputted to an AND gate 7. The output of the AND gate 7 is transferred to an outside equipment 4 by a transmission line 3. Decoders 81-8m which output fault information signals 91-9m with discriminating each of the pulses S1-Sm are provided at the outside equipment 4.
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