| 摘要 |
<p>PURPOSE:To facilitate the confirming of the turning-on/off state of the power source of a slave station by judging said state of each slave station by using a response to a command issued from the host station to each slave station, and displaying the result in a display device. CONSTITUTION:When the host station 1 comes in an OFF-able state, commands are transmitted to respective slave stations 21-2n, and the state of the power source of each of the slave stations 21-2n are judged depending on responses therefrom. Thus obtained ON/OFF-states are displayed together with the number of the slave stations in the cathode-ray tube 17. As a result, an operator at the host station 1 can confirm the power-source-states of the respective slave stations 21-2n through the display in the display device 17.</p> |
