| 摘要 |
PROBLEM TO BE SOLVED: To provide a warning system in which communication failure is prevented when a light emission timing is overlapped to relay transmission on an optical warning device during light emission control, and synchronous light emission of plural optical warning devices containing a relay destination can be achieved.SOLUTION: An optical warning control device 30 sends a control telegram for instructing light emission control, when a fire notification signal is input from a fire receiver 10, and transmits s a relay instruction telegram if confirmation response telegrams from all transmission destinations which are registered in advance are not received. Optical warning devices 32-1, 32-2 starts light emission of a light emission part when receiving the control telegram, for performing light emission control for repeating light emission by a predetermined light emission cycle, and if receiving the relay instruction telegram during light emission control, creates a relay control telegram, then transmits the relay control telegram to an optical warning device 32-3 so as to avoid overlap with light emission of the light emission part, for synchronous light emission of the optical warning devices 32-1 to 32-3.SELECTED DRAWING: Figure 1 |
