Home > J1939 DBC File - PGN & SPN Data [2020-03]
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J1939 DBC File - PGN & SPN Data [2020-03]

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Product code: J1939

Backorder Now, once ordered your item will dispatch before the 02nd of May 2025, call 1300 737 871 (NZ 0800 737 871 to confirm).

The SAE J1939 DBC file contains decoding rules for scaling raw J1939 data to 'physical values' (km/h, %, degC, ...).

-DBC is a CAN database format used in most CAN tools - incl. our CAN logger software.

-This download includes a legal J1939 DBC file & license, based on the J1939 Digital Annex. We offer this in collaboration with SAE.

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$859.40 AUD + GST
 $945.34 AUD Inc. GST
What is a J1939 DBC file?
A DBC file is a standardized method for storing the rules on how to interpret raw CAN bus data. In particular, it contains details on what signals (e.g. RPM, Vehicle Speed, ) are contained within which messages (i.e. CAN IDs).
In the J1939 standard, messages are referred to as Parameter Group Numbers (PGN) and signals as Suspect Parameter Numbers (SPN).
Further, a DBC file includes names, descriptions, positions and lengths of the signals - as well as how to offset & scale them. In short, the J1939 DBC file is key to decoding your data.
Features:
- Decode J1939: Quickly convert J1939 data with broad DBC software support
- 1000+ PGNs: The extensive DBC contains 1,000+ PGNs and 6,400+ SPNs
- Review first: Use the Google Sheet to check if your PGNs are covered
- Crowd input: Benefit from free corrections based on large user base
- Save hours: Avoid manually constructing a J1939 DBC from scratch
- Legal license: Includes legal license similar to the J1939 Digital Annex (price: 250$)
This J1939 DBC file download includes:
- An SAE J1939 DBC file with ~1060 PGNs and ~6400 SPNs
- Excel file with full SPN descriptions from the J1939 DA
- One legal license (1 user, 1 PC) matching the J1939 Digital Annex license (stand-alone price: 250$)
When is a J1939 DBC used?
The J1939 protocol is used across most heavy-duty vehicles, including commercial trucks, tractors, transit buses etc. Because the J1939 protocol is standardized, you can use the J1939 DBC file to decode data across heavy-duty vehicle brands/models - e.g. for use in J1939 telematics.
What PGNs are in the DBC?
If you have a list of CAN IDs from a J1939-based vehicle, you can paste them in our 'CAN ID to J1939 PGN converter':
- Convert raw CAN IDs to J1939 PGNs
- Check if the PGNs are in the J1939 DBC
- Convert J1939 PGNs to raw CAN ID

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