| 摘要 |
PURPOSE:To change the combination, by providing system selecting switches selectable arbitrarily and connected to a master station side of plural systems respectively, and controlling them manually or at the master station for switching, in an information collecting device where many slave stations are provided to plural master stations. CONSTITUTION:The master stations 11A, 11B manage the slave stations 12-1- 12-m of the system A and the slave stations 12-(m+1)-12-n of the system B respectively, a line switching section 13 is provided at the middle, and when both the master stations are normal, a line switching signal from the respective master station is given to cyclic line changeover switches S1-Sn, system selecting switches SW1-m select the system A side and switches SW(m+1)-n selects the system B side to collect the information of the respective system. If the master station 11A is failed, an operation selecting switch SA selects a terminal AR with a signal from the master station 11A and the information of all the slave stations is outputted through the master station 11B. When a specific slave station is desired to pause, the system selecting switch SW is selected to the paused terminal C side manually or automatically. |
