| 摘要 |
<p>PURPOSE:To prevent all synchronizing terminal station equipments in a station from stopping completely by constituting such that all devices comprising a synchronizing network fall into two systems and they are installed in one station. CONSTITUTION:A master station 1 supplies current clocks to the synchronizing terminal station equipments 201 and 202 for two systems from a #1 network synchronizing device 101, and further supplies standby locks to said equipments 201 and 202 from a # 2 network synchronizing device 102. In a slave station 2 for the #1, the current clock is supplied to each device demanding its system clock from the network synchronizing device belonging to its own system, and the standby clock is supplied to the demanging device from the network synchronizing device belonging to the other system. A slave station3 for the # 2 consists of conveyers 16 and 17 for two systems, network synchronizing devices 105 and 106 for two systems and synchronizing terminal station equipments 207 and 208 for two systms. Each device, receiving clock information, operates according to clock information on a normal current system, and switches information that the device obeys and operates according to the standby system if the clock information on the current system is troubled. Thus the full stop of the synchronizing terminal station equipments in one station can be prevented.</p> |
