| 摘要 |
When it is determined that a device ID request has been made by a master apparatus, a slave apparatus returns device ID information including the latest status information to the master apparatus, starts a status information collecting process for newly collecting status information after the return of the device ID information, measures whether or not a predetermined time has elapsed from a point of time after completion of the latest status information collecting process, and returns period elapse information showing whether or not the predetermined time has elapsed on the basis of a result of the measurement together with the device ID information.
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