| 摘要 |
PURPOSE:To transfer only the desired data among loops by providing a function to each processor to check the double reception and also giving a function to a repeater to check the double relaying respectively. CONSTITUTION:A function is added to a processor connected to each transmission controller NCP to sends the generated data to a self-connection NCP with its own individual number and a serial number and to check the double reception from said individual number and serial number when data are received from the self-connection NCP. While a function is supplied to a repeater to check the double relaying from those individual and serial numbers. Thus it is possible to transfer data among loops according to the contents of the data by setting the transmission controllers of the same structure on the loops and knowing no loop constitution nor address at the reception side even in the case of a multi-loop transmission system including a closed loop.
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