| 摘要 |
PURPOSE:To realize a circuit control system which raises the initial cost little and is rich in extensibility, by mutually connecting the circuit scanning part and the circuit corresponding part in a loop. CONSTITUTION:The circuit scanning part 50 in the circuit control unit (CCU) 5 and the circuit corresponding parts 61-6n in the line unit (LUT) 6 are connected by a loop network 7. In the loop 7, a data goes round in one direction in the format of byte as time sharing on the data channel which is made to correspond to each circuit corresponding part. Each circuit corresponding part 61-6n consists of a receiver 611, a driver 612 and a line adaptor 613, receivers a data from the channel corresponding to itself, and transmits a transmission data to this channel. The circuit scanning part 50 receives a data from the channel corresponding to the object circuit corresponding part, and transmits a data to this channel. |
