Electrical control unit and control system comprising plural electrical control units

摘要

When ENG frames created in an ENG transceiver unit and ECT frames subjected to gateway processing in an ECT gateway processor are transmitted around the same time, a transmission mediating unit alternately transmits each of the ENG frames and the ECT frames. Therefore, as compared with a case where one type of frames are preferentially transmitted, transmission of both types of frames can be started at the earliest timing.