| 摘要 |
PROBLEM TO BE SOLVED: To early detect the change in a transmission capacity of a system by a method wherein a signal is transmitted to connect one or more stations to the other stations by utilizing a transmitting section provided at a bus connection device. SOLUTION: A transmitting section 3.1 of a bus connection device 3 in a station 1.1 is connected to a control/estimation unit 4 so that transmission signals having different signal outputs are outputted in a bus 2 via an optoelectronic means of the bus connection device 3. Therefore, the transmitting section 3.1 comprises a light-transmitting device capable of controlling an optical output. Decision as to how much power of optical output is inputted to an optical wave guide body by the light-emission device via the control/estimation unit 4 is made. As a result, when power is turned on, the control/estimation unit 4 is controlled via the emission section 3.1 of the bus connection device 3 connected to a power supplying section of a printing machine. |
