| 摘要 |
PURPOSE:To provide a bus line between each device, by transmitting an abnormal release signal to each device to be supervised through the common transmission line, in case the supervisory device is abnormal or the electric power source is cut off, and releasing the abnormal state as to only the device to be supervised which is in the abnormal state, in accordance with the said abnormal signal. CONSTITUTION:Among the automatic ticket examining devices 31-3n, in case the abnormal state which has occurred in, for instance, 31 is released, an operator pushes the push-button switch 41. As a result, the processing circuit 6 sends out a release command signal to the processing circuit 7 through the common line (b), and this circuit 7 outputs a reset signal to the device 31 through the common line (d) in accordance with the release command signal which has been supplied. And in case the processing circuit 6 or 7 is abnormal, or the electric power source is cut off, the abnormal state which has occurred in the automatic ticket examining device 31 is released by pushing the push button 5. As a result, the abnormal release signal is provided to the device 31-3n through the transmission line (a), the central processing device 2 and the transmission line (c), and a release reset signal is received by the AND output with the abnormal signal of the device 31. In this way, an abnormal release signal can be transmitted to each device to be supervised through the common transmission line, irrespectively of the number of device to be supervised. |
