| 摘要 |
PURPOSE:To use all the same selection signal receiving circuits of a plurality of unit to be controlled, by changing the pin assignment of an interface wiring or a cable of an interface. CONSTITUTION:When a control unit 100 selects a unit 201 to be controlled, the unit 100 gives a signal to a connector pin 1. Then, since the unit 201 receives the signal from a connector pin (n), the signal given to the pin 1 of the unit 100 is given to a signal line 30n through a selection signal line 301 and the pin (n) of an upper-order section 2011 of the unit 201, and consequently the unit 201 is selected. When the unit 100 selects a unit 202 to be controlled, the unit 100 gives a signal to a connector pin 2. Then, the signal given to the pin 2 is given to a signal line 30n between a high-order section 2021 of the unit 202 and a low-order section 2022, thereby the unit 202 is selected. This is similarly executed for control units to be controlled at the 3rd and succeeding number. |
