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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 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.
Document History
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SAE J1939/21_202205
Data Link Layer- Most Recent
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SAE J1939/21_202109
Data Link Layer- Historical Version
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SAE J1939/21_201810
viewing
Data Link Layer- Historical Version
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SAE J1939/21_201603
Data Link Layer- Historical Version
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SAE J1939/21_201603
Data Link Layer Superseding J1939-21 APR2015- Historical Version
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SAE J1939/21_201504
Data Link Layer- Historical Version
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SAE J1939/21_201012
Data Link Layer- Historical Version
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SAE J1939/21_200612
Data Link Layer- Historical Version
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SAE J1939/21_199407
Data Link Layer- Historical Version