| 摘要 |
PURPOSE:To decrease the number of display parts and to shorten the time required for detection and recovery of a fault by displaying only the specific identification information and the fault information of a device that detects an abnormality among plural monitor devices. CONSTITUTION:A signal line is connected to a switch group 16 for each device via interfaces 2-4 from each of plural desired devices accommodated in a switch devices 31-33. The output signal of the group 16 is selected by a selector 11 having an input of the count value of an N-notation scan counter 10 whose count value is increased one by one in a fixed cycle by an internal clock. The counting of the counter 10 is discontinued when an abnormal detection control part 12 detects an abnormality. Then the count value obtained at that time point is displayed at a display part 14. A cause of the abnormality is displayed at a display part 15 through multiplexers within interface parts 2-4. Then the detection of abnormality is restarted with push of a switch 17 for restart of monitor action. |
