| 摘要 |
PURPOSE:To realize the redundancy of a data way and to improve the communication efficiency by sharing a single transceiver with plural stations. CONSTITUTION:Power supplies VC1 and VC2 are connected to the 1st common line B1 via diodes D1 and D2 in order to prevent a reverse current of a power supply to another one. While transmission signals TX1 and TX2 are connected to the 2nd common line B2 via buffer amplifiers Am1 and Am2. Furthermore reception signals PX1 and RX2 are connected to the 3rd common line B3 via buffer amplifiers Am3 and Am4, respectively. A transmission signal TXi is turned into the input of a driver 21 within a transceiver 2 which obtains a wired OR on the line B2. For the transceiver 2, the input of the driver 21 is connected to the line B2 and the output of a receiver 22 is connected to the line B3, respectively. In such a way, plural stations can be actuated with just a single transceiver. |
