| 摘要 |
PURPOSE:To localize the lowering of function on the occurrence of failure by providing an abnormality detecting means and a transmission stopping means for prohibiting transmission through the transmission circuit of the transmission control circuit of its own because of the detection of the abnormality, on each of an elevator control device and input/output terminal devices. CONSTITUTION:An abnormality detecting means end a transmission stopping means are provided on each of all elevator control device 1, an I/O transmission control device 2, floor input/output devices 4a, 4b which are connected via buses 3a, 3b, an in-cage input/output terminal device 6, information terminal devices 19a, 19b, and an input/output terminal device 13 on cage. As an abnor mality is detected by each abnormality detecting means, the transmission stop ping means of a unit in which the abnormality is detected prohibits transmission through the transmission circuit of its own transmission control circuit. Hence, no data which causes noise for preventing the normal operation of other elevator control device 1 and input/output terminal devices is given onto the transmission passages 3a, 3b. Thereby, the lowering range of function caused by the occur rence of failure by any possibility can be localized. |
