| 摘要 |
PURPOSE:To improve the efficiency of a transmission line by acquiring a data between a control station and other subsequent station in parallel while a data is acquired between a subsequent station and an equipment to be controlled. CONSTITUTION:Transmission control end discrimination circuits (2N+2)- [2N+(N+1)] are connected respectively to subsequent stations 2-2N. When the end of data transfer between the station 2 and the control station 1 is dis criminated by the circuit (2N+2), the data is transmitted/received between the station 2 and the equipment 3 to be controlled. The discrimination of the end of data transmission is noticed at the same time and the data transfer is applied in parallel between the station 1 and stations 4-2N other than the station 2 and the data transmission/reception between the station 1 and the device 3 is not an idle time. As a result, the efficiency of the transmission line is improved and the transmission speed is increased substantially.
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