| 摘要 |
PURPOSE:To send out return signals from slave equipments to a master equipment without any confliction by outputting return signals to the master equipment from only slave equipments specified by data from the master equipment, and returning the signals according to the priority of returning after delay times corresponding to the priority. CONSTITUTION:One slave equipement is specified on a keyboard 14 to control the operation of a load. When the specification of the slave equipment is completed, a signal selector 16 as a switching means reads address data out of an address data memory 20 and sends it from a transmitter 26 to the slave equipment while superposing the data upon the AC signal of an indoor power line together with control data 22 and end detection data 18. Only slave equipments specified by the data from the master equipment are allowed to send out return signals, which are transmitted according to the priority of returning based upon the data end signal of the master equipment after delay times corresponding to the priority. |
