What Is the Difference Between a CAN Bus and a USB or Ethernet?Ī CAN bus offers distributed communication similar to a universal serial bus (USB) or Ethernet. With a CAN bus, reliable data and priority-driven communication can be achieved. The CAN bus sends short messages to the entire network using a two-wire bus system and alleviates the complexities associated with wiring. Bosch developed the CAN bus as a multi-master, broadcast messaging-based communication protocol for automobiles. The idea of a CAN bus was initially developed by Bosch and later codified into the International Standardization Organization (ISO) under the ISO-11898 standard. Controller Area Network BusĪ CAN bus is a rugged, digital serial communication bus that is widely used in automobiles. In this article, we will explore the CAN bus layout, nodes, and bus line termination. A CAN bus is well-suited for distributed communication in vehicles and industrial and instrumentation applications given its bidirectional communication over a single twisted pair, in-build fault handling, and improved noise immunity. CAN bus architecture allows microcontrollers and other vehicle devices to communicate with each other without a host computer. Since its first application in 1991, the CAN bus standard has been widely adopted by the automotive industry. The CAN bus is often used in onboard diagnostics (OBD) in carsĪ controller area network (CAN) bus is a communication standard designed particularly for vehicles. The CAN bus is a highly regarded vehicle bus standard and is often used in onboard diagnostics (OBD) in cars. In a CAN bus network, cables with twisted wires (CAN_H and CAN_L) form the CAN bus line. The idea of a CAN bus was initially developed by Bosch and later codified into the International Standardization Organization (ISO).
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