| 摘要 |
PURPOSE:To apply a processing for a fault before a fixed fault is generated and to perform a stable operation, by detecting an intermittent faulty part before the fixed fault at a bus loop is generated without affecting on an operating system. CONSTITUTION:Plural processors 2-5 are connected to a loop-shaped bus 1 in a bus fault detecting system, and the processor 2 is set as a re-sending number of times tabulating processor which performs the reception of information uniformly from all of the processors. Also, the upstream transmission processor 4 is connected to the processor 2, and the downstream transmission processor 5 is connected to the processor 2 via the fault processor 3. The loss of an information frame is generated intermittently at the position of the processor 3 from the flow of the information on the bus 1. And the information is sent from the transmission processor to an reception processor, and a response from the reception processor is confirmed, and when no response is obtained, re-sending are performed from each of the processors 4 and 5, and the number of times of re-sending is tabulated, thereby, the processor at the faulty part can be detected from the distribution state of the number of times of resending.
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