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SAE J1939/21_202205 : 2022

Data Link Layer

Standard Details

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.

Cross Reference: ISO 11898,ISO 15765-3,J1939/71_201506,J1939/81_201602,J1939_201808

General Information

Status : Revised
Standard Type: Main
Document No: SAE J1939/21_202205 : 2022
Document Year: 2022
Pages: 54

Life Cycle

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Revised
SAE J1939/21_202205 : 2022
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