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8devices Community - View topic - Analyzing CANBus data
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 Analyzing CANBus data 
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Joined: 10 Mar 2016, 23:37
Posts: 7
I'm working with the 8devices USB2CAN device which successfully logged several sets of data from an automotive CANBus. While I am familiar with the CANBus message architecture (SOF, Arbitration, Data Field, etc.), I am having trouble relating the messages logged to the CANBus architecture.

I used can-utils on an Ubuntu (Linux) PC. The specific command was: candump -l any,0:0,#FFFFFFFFlow
Below is a sample of the data logged:

(1457019889.244736) can0 20000088#000002000000007F

My guess is that the string after can0 is the CANBus message. Can anyone tell me what format this is in? Is there an editor that I can use to decipher this? And what is the string in parentheses before (can0)?

Thank you.


10 Mar 2016, 23:58
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Joined: 28 Oct 2012, 09:11
Posts: 25


11 Mar 2016, 15:40
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Joined: 10 Mar 2016, 23:37
Posts: 7
Thanks for replying.

The "low" appended at the end is a typo in my posting. The actual (and correct) command was:

candump -l any,0:0,#FFFFFFFF

Thank you again for your help.


11 Mar 2016, 18:32
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Joined: 10 Mar 2016, 23:37
Posts: 7
[quote="krumboeck"]

In you case the id indicates two errors: bus error and protocol violation

Thanks again for replying. Can you suggest ways to clear the bus error and protocol violation mentioned in your post?


26 Mar 2016, 13:03
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