| 摘要 |
PURPOSE:To constitute efficiently and economically a communication network by providing a communication control circuit comprising a common constitution having host control and station control and a main CPU to each station device of host and stations. CONSTITUTION:Station devices 11-1, 11-2, 11-3 being the host or the stations are provided respectively with main CPU12-1, 12-2, 12-3 and communication controllers 13-1, 13-2, 13-3. The controllers 13-1-13-3 are of the identical constitution to each station device and the CPU12-1-12-3 give a command being the host or the station to the devices 13-1-13-3. The CPU12-1 of the station device 11-1 transmits a host command to the circuit 13-1, then the circuit 13-1 makes communication job as the host. When the CPU12-2, 12-3 of the station devices 11-2, 11-3 give the station command, the circuits 13-2, 13-3 make communication job as the station. |
