| 摘要 |
PURPOSE:To prevent data loss and break even if a fault occurs in system control units, by connecting the monitor object group and plural system control units by the parallel synchronous bus and by operating plural system control units in parallel synchronously completely. CONSTITUTION:Plural monitor objects 11-1-11-K receive asynchronous input data from the data transmission line and convert it to high-speed synchronous data and output it from the transmission line. One of system control units 12-1-12-n executes the control and so on for the monitor object group and has a conversation with external device VDU. The monitor object geoup and plural system control units are connected by parallel synchronous bus 13, and plural system control units are operated in parallel synchronously completely by synchronizing pulses of the parallel synchronous bus. Then, system control units to transmit the output to the external device are switched successively for every occurrence of the fault. |
