Practice lab / saved data

Read a CAN log without guessing its meaning.

Start with sixteen synthetic frames, then inspect counts and byte variation. An applicable signal definition is still needed to interpret a vehicle signal.

Saved-file practice only

Classic candump lines in the form (0.000000) vcan0 100#00AA. Up to eight payload bytes per frame. No upload, bus connection, diagnostic command or automatic signal decoding.

Input

Download the synthetic input

Observations

Load and analyze a file to see its supported observations.

Counts over your stated observation window
IDFramesFrames / secondPayload lengthChanging byte offsets

Counts and observed variation are file-level findings. They do not establish bus load, signal units, diagnostic accuracy or repair success.

Keep the next question explicit.

Which current, permitted definition applies to these bytes? What test conditions and observation interval produced the data? What additional evidence would distinguish a counter from a sensor value?

References: Linux kernel documentation.

Read the evidence-record unit