DBC File Explained - A Simple Intro (2020)

[@richardallwood5515]

It's a bit confusing that the DBC CAN ID shown at 2:33 is not used when showing the DBC file at 2:38 (its a bit more of a problem when following along on the website).

[@europechannel8410]

Very informative about DBC files

[@MeraKEI]

In part 2:54. start bis 24, and bit length is 16 (means 8 + 8 bits) = means till 68. So why they cover data length of 6813 (which is 32?)

[@martinfalch4648]

The start bit is 24, meaning that you'd start the signal extraction from this bit (i.e. after the 3rd byte). One byte is 8 bits, so with a bit length of 16 bits it means you need to extract 2 bytes - which is what is shown in the video. The byte ordering is then the reason why the order of the bytes is reversed. Hope clear.

[@hopf]

I know, very late reply: One HEX-digit = 1 Nibble = 4 Bit, 0-F in Hex or 0-15 in decimal (not 8 Bit as I also have confused in the past sometimes). So 0x68 = 1 Byte, 0x13 = 1 Byte

[@ceva4085]

where can you find dose DBCs? I am looking for one for Renault Megane 2 and one for Dacia Duster 2016. Does anyone found them? Thanks in advance!

[@bennguyen1313]

What exactly is the difference between EDS and DBC? Is it possible (ex. not against terms-of-service) to convert a log file captured in linux (candump) or Peak's PCAN (.trc) and convert it to the CanEdge mf4/mdf4 format, so that it can be used with CSS's visualization tools (asammdf GUI, python/matlab api, etc)? Or perhaps other reasons why writing a converter that outputs mf4 is not possible or extremely difficult? If using CSS is not recommended, any suggestions for an open-source canopen visualization software (ex. PlotJuggler with the DataStreamCAN plugin)? I'm mostly interested in creating a dbc file for a canopen device (gcan-4128), and plot the data real-time, and occasionally send it control commands (SDO Write).

[@roybm3124]

Very usefull site, helped a lot!

[@martinfalch4648]

Thanks Roy

[@autoembed5334]

kzbin.info/www/bejne/nmHUkHSBaJenfcU

[@prasadj2696]

How this CAN frames (29 bit identifier/ 11 bit identifiers ) linked to these DBC files?

[@CSSElectronics-CAN-Logger-X000]

We suggest checking out our intro article and our DBC editor playground to understand the logic

[@Silvadore1]

@@CSSElectronics-CAN-Logger-X000 where can we find DBC files? Are DBC files are common among constructors? can a single file be used for multiple cars or boards? Is it possible to use it for generic CAN card like those we find with Arduino, STM32, Amtel or Raspberry PIs?

[@roliveira2225]

Very good!

[@mtmansourt]

Great Content

[@martinfalch4648]

Thanks!

[@basavaprabhusherikar7737]

I have a question! how do we understand the DBC file correctly? and can we build a DBC file from an ARXML file? I am working on an issue where I am defining a GenSIgStartValue as BA_DEF_ SG_ INT X Y; but when I am adding the default value for it as BA_DEF_DEF_ "GenSigStartValue" 0; I am getting an error while opening in vector tool. any help would greatly be appreciated

[@martinfalch4648]

I suggest checking out our CAN DBC file intro in the Guides section of our website. The specific question you have is probably a bit more niche though, I'd recommend trying to build that DBC via Vector's CANDB++ editor in this case

[@martinfalch4648]

Let us know your feedback or questions !