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About This Item

 

Full Description

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 CAN protocol with 29-bit Identifiers. For SAE J1939 no alternative data link layers are permitted.

 

Document History

  1. SAE J1939/21_202205


    Data Link Layer

    • Most Recent
  2. SAE J1939/21_202109


    Data Link Layer

    • Historical Version
  3. SAE J1939/21_201810


    Data Link Layer

    • Historical Version
  4. SAE J1939/21_201603


    Data Link Layer

    • Historical Version
  5. SAE J1939/21_201603


    Data Link Layer Superseding J1939-21 APR2015

    • Historical Version
  6. SAE J1939/21_201504


    Data Link Layer

    • Historical Version
  7. SAE J1939/21_201012


    Data Link Layer

    • Historical Version
  8. SAE J1939/21_200612

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    Data Link Layer

    • Historical Version
  9. SAE J1939/21_199407


    Data Link Layer

    • Historical Version