| 摘要 |
PURPOSE:To shorten the hit of a communication transmission line as much as possible by disconnecting an information line from a circuit control part through an information line switching part, and generating and sending a control signal to various information lines at the same time. CONSTITUTION:When a start signal from a communication controller 1 is received by a control part 5a through a start signal line 6, a command is inputted from the control part 5a to the circuit switching part 5b through a switching drive line 7 and the switching part 5b operates to switch an information line 3 from the device 1 to the side of the control part 5a and connect the information line 3 to the control part 5a and a device 4 to be controlled. Then, after a switching operation is compleated, information is sent out of the device 5a to respective devices 4. Once the information is sent out completely, the switching part 5b is restored with the command from the control part 5a to set the information line between the devices 1 and 4. |
