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Protocols

CAN bus

Robust serial bus for automotive and industry

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CAN (Controller Area Network) was created by Bosch in the 1980s to connect a car's electronic control units, and today it is a robust fieldbus found in automotive, machinery, robotics and IIoT. It is multi-master and resolves collisions by priority arbitration without losing messages, over a noise-resistant differential twisted pair.

Application protocols such as CANopen (industry/robotics) and J1939 (heavy vehicles) are built on top of CAN. CAN FD extends speed and frame size for modern needs.

Compatible devices

  • Vehicle electronic control units (ECUs)
  • Industrial sensors and actuators
  • Robotics and mobile machinery

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