SYSTEM FOR POINTING COMMUNICATION FAULT LOCATION

摘要

PURPOSE:To separately point the fault of a processor and that of a communication path in a network system consisting of =3 processors. CONSTITUTION:The diagnostic communication part 160 of a processor 100 performs the diagnostic communication to other processors 101 and 102. Meanwhile the diagnostic responding parts 141 and 142 send the responding communication to the processor 100 respectively. Receiving the response, the processor 100 records the presence or absence of responses to a matrix flag 180 and sends a start flag 200 to the processor 101 selected by a next diagnostic processor selector means 220 for recording a fact that the information on the flag 180 is diagnosed. The processor 101 carried out the preceding processing. By repeating these operations, a fault location pointing part 190 detects a fault. Thus the fault of a processor can be surely discriminated from the fault of a communication path.