| 摘要 |
<p>PURPOSE:To omit an exclusive circuit and also to avoid the erroneous break of a power supply through a master station, by sending a power-off enable command to the adaptor of its own station when a slave station is set in a state where the break of the power supply is allowed and informing the transmission of said power-off enable command. CONSTITUTION:A CPU-B9 delivers a power-off enable command to allow the break of the power supply to an adaptor B7 via a channel 8 when a power-off enable state is secured after the processing is over. Then the adaptor B7 opens a switch contact 14 and also sends the power-off enable signal to an optical link unit B6. A CPU-A1 sends a remote power-off instruction command to a remote power supply controller 2 and the controller 2 sends a remote power- off instruction frame to the unit B6. The unit B6 opens a switch contact 15 and also de-energizes a relay 12 provided in a system power controller 10 since the contact 14 is already opened. Thus the power supply is cut off to a power supply part 11 of the CPU-B9.</p> |
