| 摘要 |
PURPOSE:To perform the most desirable processing as the whole by distributing and holding a schedule table, which indicates the processing to be executed by another unit in case of fault occurrence of one data processing unit, in respective units. CONSTITUTION:Micro processors MPU of data processing units 3-i (i=1-3) take partial change of the whole processing and execute it. Each MPU advances the processing on a basis of data stored in system film 7-i. Schedule table 1-i is held in each MPU distributively; and if one MPU becomes faulty, fault monitor unit RACA4-i connected to its unit detects the fault and reports it to other complete RACA. Other RACA perform processings to be executed by themselves according to contents of its own table 1-i. At this time, temporary control MPU is designated; however, when this control MPU becomes faulty, control is transferred to another complete unit, thus executing the most desirable processing as the whole. |
