| 摘要 |
<p>PROBLEM TO BE SOLVED: To conduct an adjustment after installation conveniently while an advantage of electric wire length reduction is maintained which a power source line signal carrier system has in itself. SOLUTION: In adjustment after installation on a site, address numbers are changed in consecutive order and transmitted from an automatic address number extractor 141 in a control unit 14 and, according to a response from an illumination device 12 of the address number, an address number of an illumination device 12 in the same block is extracted and registered in a present address number memory 142. When address numbers are set in a switch device 13, respective illumination devices 12 in the same block are turned on in consecutive order by transmitting, from a mode setter 143 in the unit 14, the address numbers already registered in the memory 142. In this state, when a confirmation switch 131 of the switch device 13 in the same block is pressed, the address number of the illumination device 12 which is transmitted from the mode setter 143 is registered in an address number memory 133.</p> |
