VAL_ message_id signal_name raw_value "text" raw_value "text" ... ; Example: VAL_ 100 GEAR 0 "P" 1 "R" 2 "N" 3 "D" ; CM_ "Global comment"; CM_ BO_ message_id "Comment for message"; CM_ SG_ message_id signal_name "Comment for signal"; CM_ BU_ node_name "Comment for node"; 3.10 Attribute Values ( BA_ ) Set attribute values for specific objects.
BU_: (list of network nodes)
BA_DEF_ "BusType" STRING ; BA_DEF_ BO_ "GenMsgCycleTime" INT 0 65535; BA_DEF_ SG_ "MySignalAttribute" STRING ; dbc file format documentation pdf
BA_ "BusType" "CAN"; BA_ "GenMsgCycleTime" BO_ 100 10;
BO_ 100 DRIVER_MESSAGE: 8 ECU1 SG_ RPM : 0|16@1+ (0.125,0) [0|8000] "rpm" ECU1 SG_ TEMP : 16|8@1+ (1, -40) [-40|215] "degC" ECU1 CM_ "Global comment"
BA_ (attributes, e.g., default values)
BO_ 200 MCU_STATUS: 8 MCU SG_ MOTOR_RPM : 0|16@0+ (1,0) [0|20000] "rpm" VCU SG_ MOTOR_TEMP : 16|8@0+ (1,-40) [-40|215] "degC" VCU SG_ FAULT : 24|1@0+ (1,0) [0|1] "" VCU CM_ BO_ message_id "Comment for message"
BO_ 300 BMS_DATA: 8 BMS SG_ SOC : 0|8@0+ (0.5,0) [0|100] "%" VCU SG_ BATTERY_VOLTAGE : 8|16@0+ (0.01,0) [0|500] "V" VCU SG_ BATTERY_CURRENT : 24|16@1- (0.1,0) [-500|500] "A" VCU
BS_:
CM_ "Example DBC file for demonstration"; CM_ BO_ 100 "Driver controls message"; CM_ SG_ 100 RPM "Engine speed signal";