| 摘要 |
PURPOSE:To improve transmission efficiency and to detect easily a faulted point by transmitting data on each transmitting terminal station additionally to the tail of received data when the station receives the data from an upstream-side terminal station, and transmitting the data independently when no data is received for a specific time. CONSTITUTION:Data transmitting terminal stations 21-2m transmit data to a data collecting station 1. At this time, a terminal station 2n transmits data periodically and a low-order station 2n-1 transmits its own data additionally to the tail of the received data. Similarly, the lowest-order station 21 also transmits its data. Each terminal station transmits its own data independently unless data is received from the high-order station for the specific time. For the purpose, the data is analyzed to detect a faulty station. |
