| 摘要 |
PURPOSE:To improve the transmission efficiency of a transmitting signal by detecting the operation input of up dimming or down dimming by a central control unit, transmitting a control signal and executing updimming or down dimming by a dimming control terminal equipment itself for lighting load until a stop signal is received again by the dimming control terminal equipment. CONSTITUTION:When an up dimming switch S5 or a down dimming switch S6 is pushed, a central control unit 1 detects the operation input of up dimming or down dimming and transmits the control signal of up dimming or down dimming to a dimming control terminal equipment 3a and at the dimming control terminal equipment 3a, the dimming level of the lighting load is successively turned up or down by the terminal equipment itself. When the up dimming switch S5 or the down dimming switch S6 is detached, the central control unit detects such a state as the stop input of a dimming level change and transmits this stop signal to the dimming control terminal equipment 3a and the dimming control terminal equipment 3a receiving the stop signal stops the executing change of the dimming level. Thus, when the dimming of lighting load L1 is controlled from the central control unit 1 through the dimming control terminal equipment 3a, the transmission efficiently can be improved. |
