| 摘要 |
PURPOSE:To make it possible to cope with the change and addition of terminals flexibly by detecting a position by a pulse sent from a master mode switch and that sent back from a slave mode switch and by using them as information on the reservation order. CONSTITUTION:The reservation indication pulse of master mode switch 6 and the sent-back pulse of slave mode switch 7 are detected at positions of terminals A-E to measure intervals of time, so that respective measured values will be in proportion to distances from slave mode switch 7. Since reservations are made by generating their own timing in reserve mode by the use of those measured values, the change and addition of terminals can be coped with flexibly. Additionally, the timing when master mode switch 6 can insert a reservation pulse can be judged the end of the reservation mode, so that even if the line length and the number of terminals would be changed, the reserve mode end can easily be judged. |
