| 摘要 |
PURPOSE:To offer plural remote control system with high reliability to be controlled becoming a main remote controller automatically regardless of the condition of the location to be controlled when abnormalities occur in the main remote controller by taking backup of a control operation of devices in the location to be controlled. CONSTITUTION:When a main remote controller 1-1 having control right becomes incontrollable against a location to be controlled 8 for some reasons, an action signal bit of a status signal from the controller 1-1 will not change by a fixed frequency. A subordinate remote controller 1-2 recognizes time-out of the action signal bit, instantaneously sets a control right signal bit of its status signal and the action signal bit, and resets a response signal bit so as to transmit it to a control module 3-2. Moreover the subordinate remote controller 1-2 can become a main remote controller, transmitting a device selection reset signal unconditionally. When troubles in the controller 1-1 are corrected and the operation becomes normal, the controller 1-1 resets its device selection condition, a control right signal, and an action signal. When the controller 1-2 sets and reserves the control right signal bit, the response signal bit is set and transmitted to the 1-2 through the control module 3-1 and 3-2. |
