| 摘要 |
PURPOSE:To realize the simplification of a power supply wiring, the reduction of the space, etc. while assuring the interlocking control, by transmitting and receiving the control word formed with the specific pulse between a control circuit including a logical circuit and a switch controller. CONSTITUTION:Plural electric devices 3 containing a switch controller 6 having a device code respectively are connected to a power supply line 1 in the form of the branches of a tree. At the same time, a control board 9 is connected to the line 1 with a capacitor 10, and a switch controller 16 is connected to the line 1 with the capacitor 10. Then the control word including the device code and the working code is formed with plural pulses that are transmitted and received between the board 9 and the controller 6 by one and every cycle of the commercial frequency voltage via the capacitor 10 as well as the line 1. The board 9 controls the operation of a specific device 3 including logical circuits 20 and 21 working in response to the control word given from each device 3 with the interlocking to the operation of another device 3. |
