| 摘要 |
PURPOSE:To transmit information which is transmitted and received between a controlling place and a place to be controlled, as an optical signal, by providing a light source for generating 2 kinds of optical signals whose wave length is different on the transmission control part, and also providing a detection circuit for discriminating and detecting the optical signal on the receiving control part. CONSTITUTION:When an address signal generated from the address generation part 7-2 has coincided with the address which is set in advance in the specified address set part 7-3, a coincidence output signal is output and is provided to the switching unit 7-6. In this case, the output of the parallel/serial transducer 7-5 is provided to the first generation source 7-7 through the AND circuit AND of the switching unit 7-6. An optical signal which has been emitted from the light emission source 7-7 is transmitted to the place side to be controlled through the fork end fiber cable 11. On the other hand, when the address signal has not coincided with the set address of the specified address set part 7-3, the output of the parallel/serial transducer 7-5 is applied to the second light emission source 7-8. |
