The SAE J1939 documents are intended for light, medium, and heavy-duty vehicles used on or off road, as well as appropriate stationary applications which use vehicle derived components (e.g., generator sets). Vehicles of interest include, but are not limited to, on- and off-highway trucks and their trailers, construction equipment, and agricultural equipment and implements. The purpose of these documents is to provide an open interconnect system for electronic systems. It is the intention of these documents to allow Electronic Control Units to communicate with each other by providing a standard architecture. This particular document, SAE J1939-21, describes the data link layer using the Classical Extended Frame Format (CEFF) with 29-bit IDs, as defined in ISO 11898-1, December 2015. For SAE J1939, no alternative data link layers are permitted. In the case when two ECUs are using Transport Protocol to transfer the same PG in both directions, and an ECU must abort one of the transfers, the existing message structure has no way to designate which transfer to abort. The addition of the direction indicator in the TP.Conn_Abort message will solve this problem and allow an ECU to select what connection to abort.


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    Titel :

    Data Link Layer


    Erscheinungsdatum :

    2021-09-01



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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