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SAE J1939-22 (SEP2022)

Current Revision

CAN FD Data Link Layer

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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 J1939-22, describes the data link layer using the flexible data rate as defined in ISO 11898-1, December 2015. The flexible data rate capability in CAN (commonly called CAN FD) is implemented as a transport layer in order to allow for functional safety, cybersecurity, extended transport capability, and backward compatibility with SAE J1939DA.

SDO SAE: SAE International
Document Number J1939-22
Publication Date Sept. 8, 2022
Language en - English
Page Count 82
Revision Level 202209
Supercedes
Committee
Publish Date Document Id Type View
Sept. 8, 2022 J1939-22_202209 Revision
July 16, 2021 J1939-22_202107 Revision
March 22, 2021 J1939-22_202103 Revision