❓ Is it necessary to connect a 120-ohm resistor to the CAN analyzer device?

:red_question_mark: Is it necessary to connect a 120-ohm resistor to the CAN analyzer device?

That depends on resistance of the CAN lines.

Measure the resistance across CAN_H and CAN_L with the power off.

  • If you read ~60 ohms → already terminated, no need for another resistor.
  • If you read ~120 ohms or more → you may need to add one.

I solved the problem and was able to run it on Motec M84
Thanks