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

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