| 摘要 |
PURPOSE:To reduce the cost due to the reduction of the number of parts and the main-hour of assembly by so constituting the titled equipment that a serial code to perform function control and a level signal to perform sequence control are supplied to a common terminal to reduce the number of terminals. CONSTITUTION:To the terminal 8, the serial code SC to perform function control and the level signal SL to perform sequence control are commonly supplied. A signal supplied to the terminal 8 is supplied to a signal deciding circuit 11 where the supplied signal is decided whether it is the code SC or the signal SL. In this case, for instance, the decision is executed by detecting the pulse- width. When the pulse-width is longer then the maximum pulse-width of the code SC, the signal is decided as the signal SL. The output SD from the circuit 11 is supplied to a switching circuit 10 as a switch control signal, and the circuit 10 is connected to the fixed terminal of the side A, if the circuit 11 decides as the code SC, but is connected to the fixed terminal of the side B, if the circuit 11 decides as the signal SL. |
