J1939 DBC File: Decode Heavy Duty Data with PGN & SPN Database

What is a J1939 DBC File and how does it decode heavy duty vehicle data?

J1939 DBC File – Decode Heavy Duty Data [PGN & SPN Database]

 

The SAE J1939 DBC file contains decoding rules for converting raw J1939 data to ‘physical values’ (km/h, %, …). This lets you easily decode data from heavy duty vehicles (trucks, buses, tractors, …).

DBC is a CAN database format used in most automotive tools – incl. our CAN software/APIs.

The download includes a legal J1939 DBC & license, based on the J1939 Digital Annex Excel file (also included). We offer this in collaboration with SAE. For company-wide quotes, contact us.

The DBC revision is 2024-12.

Tip: Contact us for a free ‘sample conversion’ of a CLX000/CANedge log file.

New: Check out the 4 min intro video.

GENERAL
Standard(s) J1939 Digital Annex – corresponds mainly to J1939-71
#PGNs 1800+
#SPNS 12000+
Multipacket Multipacket syntax is used for the multipacket PGNs included in the DBC
Multiplex Some multiplexed messages are included, but with “regular” syntax (not multiplex)
Descriptions Partial SPN descriptions included in DBC (full included in Digital Annex)
Attributes SPN ID, VFrameFormat
Value tables Not included
Network nodes Not included

 

Files and media

Frequently Asked Questions

1 What tools or software are compatible with the J1939 DBC file?

The J1939 DBC file uses the standard DBC (CAN database) format, which is widely supported by most automotive tools, including Pertech's own CAN software/APIs. This ensures broad compatibility for decoding heavy-duty vehicle data.

2 What J1939 standard does this DBC file adhere to, and how reliable is its data?

The J1939 DBC file is based on the J1939 Digital Annex Excel file and is offered in collaboration with SAE, ensuring compliance with industry standards. It includes decoding rules for over 1800 PGNs and 12000 SPNs, providing accurate conversion of raw J1939 data to physical values.

3 How is the J1939 DBC file licensed, especially for team or company-wide use?

The download includes a legal J1939 DBC and license. For company-wide quotes or specific licensing requirements, customers are encouraged to contact Pertech directly to discuss their needs.

4 Can I test the J1939 DBC file with my own data before purchasing?

Yes, Pertech offers a free 'sample conversion' service. You can contact them to arrange a conversion of your CLX000/CANedge log file to see the DBC file in action with your specific data.

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