Decoding CAN logs

Devcult - 6G and Satellites
2 min readAug 12, 2020

There are four different message types (or frames) on a CAN bus:

  • the Data Frame
  • the Remote Frame
  • the Error Frame and
  • the Overload Frame
DATA Frame
Remote Frame
Error Frame and Overload Frame

CAN HS, CAN FD, EXT-CAN, M-CAN

CAN FD: CAN with flexible data rate

CAN HS: CAN High Speed

EXT-CAN: External CAN

M-CAN: Multimedia CAN (Max 4096 bytes)

Decoding Data frame in CAN-TP protocol in M-CAN logs

M-CAN logs

Timestamp, Channel, Frame Id, Transmitter or receiver, type of frame, data length, Random flag (or protocol control information), data

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