| 摘要 |
PURPOSE:To obtain a remote control device which can easily know the position of short-circuit from a main operation monitor panel, if a short-circuit takes place on a signal line, through the power supply for each terminal obtained from the signals, by driving the 1st and 2nd relay drive circuits, separately. CONSTITUTION:A control data transmitted from a main operation monitor panel 1 is rectified and smoothed for a power supply 8 for the drive of a terminal device 2. When a power supply interruption detecting circuit 9 detects the short- circuit of a signal line 3, a relay contact 7 is opened together with a relay contact 15 to disconnect a branch terminal 17 from the signal line 3. The main operation monitor panel 1 separately operates the 1st relay contact drive circuit 10 and the 2nd relay contact drive circuit 10a, allowing to discriminate whether the signal line 3 or a branched signal line 16 has a short-circuit. |
