| 摘要 |
PROBLEM TO BE SOLVED: To provide a control system switching device which automatically performs switching to a standby control part by operating a switching device if facilities get out of order in a small-scale device. SOLUTION: The switching device 1 automatically switches an in-use control part 2 to a standby control part 3 with a fault detection signal 21 and sends a fault display signal 28 to a monitor board 5. An I/O part 4 receives a control signal 23 from a monitor console 6, receives and outputs a monitor signal 20 and a control signal 22 from and to peripheral equipment 7, and sends a fault detection signal 21 to the switching device 1 when receiving the monitor signal 20. The in-use control part 2 outputs a fault signal 26 to the switching device. The standby control part 3 outputs a fault signal 27 to the switching device.
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