| 摘要 |
The present invention makes it possible to detect abnormality in an error detecting function early while minimizing adverse effects on transfer performance. The present invention provides a method for diagnosing a transfer data ensuring system in which a transmitting apparatus transmits transmission data provided with an error detection code and then receives a result of error detection (referred to as a transfer reply below) carried out by a receiving apparatus to verify the transferred data, the method comprising transmitting dedicated diagnosis data provided with an incorrect error detection code and diagnosis data provided with a correct error detection data and diagnosing the error verifying function on the basis of a transfer reply to the transmitted data.
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