| 摘要 |
PURPOSE:To attain an operation device with high reliability by bringing always the 1st and 2nd central operation controllers into the operating state to constitute the system of a multiplex system to be backed up at all times. CONSTITUTION:Two sets of the central operating controllers start respectively start processing circuits 10A, 10B to attain self-diagnosis through self-diagnosis processing circuits 11A, 11B, fault discriminating circuits 12A, 12B, processing selection discriminating circuits 22A, 22B and operation processing circuits 13A, 13B, respectively. When the fault is diagnosed by the self-diagnosis processing circuits 11A, 11B, the fault is judged by the judging circuit 12A or 12B, the other normality judging circuits 21A, 21B of the other party to judge it automatically that the other controller is not failed so as to activate switching processing circuits 14A, 14B and the processing is switched to the other party. Both the central operating controllers are in standby so as to apply operating processing when the processing selection is judged while checking the operation at all times. |
