Data Link Layer
- Ground Vehicle Standard
- J1939/21_201810
- Revised
Scope
Rationale
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A final set of edits have been made to align this document with data frame format definitions that were updated in ISO 11898-1:2015
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References to ISO documents used in this Recommended Practice have been corrected to identify the document and date of publication
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Updated interframe timing for TP.BAM messages
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Implementation rules for TP.CM_CTS and TP.CM_RTS messages have been updated, including guidance for error handling
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Additional rules about responding to a Request message are included in the notes to Table 5
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Binary numbering formats have been changed to include a subscripted letter b after the binary number (e.g., 010b)
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Hexadecimal numbering formats have been changed to include a subscripted letter h after the hexadecimal number (e.g., FEh)
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Table 1 | Mapping of SAE J1939 into CAN’S arbitration and control fields | |
| Table 2 | Parameter group number examples (SAE USE EDP=0) | |
| Table 3 | Definition of extended data page and data page use | |
| Table 4 | PDU specific | |
| Table 5 | PDU1 and PDU2 transmit, request, and response requirements | |
| Table 6 | Connection abort reason | |
| Table D1 | SAE J1939-21 SPN usage |
Issuing Committee
Truck Bus Control and Communications Network Committee
The Truck and Bus Control and Communications Network Committee of the Truck & Bus Electrical/Electronic Steering Committee is responsible for developing, reviewing and approving standards, recommended practices and information reports related to communication networks for the exchange of control and diagnostic information among electronic components on or connected to truck and bus vehicles. The objective is the architecture of communication networks offering an open interconnect system that supports communication between loose package components, such as engines and transmissions, which are sourced from many different component suppliers and integrated into vehicle systems. The communication networks are developed for use in on-highway and off-highway trucks and their trailers, buses, construction equipment, and agricultural equipment and implements, and applicable to light-duty, medium-duty, and heavy-duty vehicles used on-road or off-road, and for appropriate stationary applications which use vehicle derived components (e.g. generator sets).
Reference
| Number | Title |
|---|---|
| ISO 11898 | This document is not part of the subscrption. |
| ISO 15765-3 | This document is not part of the subscrption. |
| J1939/71_201506 | Vehicle Application Layer |
| J1939/81_201602 | Network Management |
| J1939_201808 | Serial Control and Communications Heavy Duty Vehicle Network - Top Level Document |