| 摘要 |
In a remote control system, a remote ECU as a primary device can transmit, to a secondary device, an instruction message for ordering an execution of a process in a state where a response method according to the content of the process can be specified. The secondary device which receives the instruction message can transmit a response message to the primary device according to the response method specified in the instruction message while executing the corresponding process. That is, the secondary device can transmit the response message in the pattern according to the convenience of the primary device. The response message can be designed to indicate the response method not to transmit a response message unnecessary for the primary device to prevent an unnecessary response message from being transmitted. Communication loads can be decreased on the network; the response of the secondary device can be enhanced to the instruction from the primary device.
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