| 摘要 |
PURPOSE:To accelerate the response of light dimmer control operation without delaying the response of the monitor operation by retrieving a terminal device with an interruption polling and sending back the call monitor data individually to perform the light dimmer control operation. CONSTITUTION:When receiving an interruption request signal by a transmission/ reception means 16, a main control board 1 actuates an interruption polling means 17 immediately to retrieve the terminal device 2 which is transmitting the interruption request signal. When the device 2 is specified, an individual polling means 13 calls the device 2 individually and transmits a transmission signal VS of monitor mode to send back a monitor data signal. The called device 2 sends back a monitor data signal. With this polling operation, the monitor data showing the states of up and down light dimmer control switches SWa and SWb are sent back to the board 1. Then the board 1 decides from the monitor data whether or not the monitor input signals S1 and S2 are changed to 0 from 1 respectively and then decides the start or stop of the light dimmer control operation. |
