| Section | Content Description | |---------|----------------------| | | VERSION , BS_ , NS_ (new symbol) directives | | 2. Bit Timing | BS_: baud rate definition (e.g., 500k, 250k) | | 3. Messages | BO_ – message ID, name, DLC, transmitter | | 4. Signals | SG_ – name, start bit, length, byte order (Intel/Motorola), signed/unsigned, factor, offset, min/max, unit | | 5. Value Descriptions | VAL_ – mapping raw integers to human-readable strings | | 6. Comments | CM_ – user-defined descriptions for messages/signals | | 7. Attributes | BA_ – custom attributes (e.g., GenMsgCycleTime) | | 8. Signal Groups | SIG_GROUP_ – logical grouping of related signals |
The most accurate documentation is not a PDF on the web, but the help file built into the free . dbc file format documentation pdf