| 摘要 |
PURPOSE:To restrain the influence dependent upon short-circuit of the signal line between the master and the slave to a minimum, by inserting prescribed repeaters is proper positions of the signal line. CONSTITUTION:Repeaters B11- are inserted to signal line 2 from master machine 1. When the transmission signal from the master machine is broken over a prescribed delay time, this repeater disconnects and separates the signal of the master machine side and the signal line of the terminal side from each other; and when the transmission signal is input from the master machine, the repeater restores disconnection and separation. Since the delay time of the repeater master machine is set to a longer time, disconnection and separation of signal lines is performed successively from the repeater most distant from the master machine at a short-circuit occurrence time. Consequently, when disconnection and separation are performed for the repeater nearest to the short-circuit position from the master machine, terminal equipments connected to these signal lines can be subjected to normal remote control because the signal line of the master machine side is not abnormal from the repeater above. Thus, the influence dependent upon short-circuit can be restrained to a minimum. |
