A CAN device that uses 11-bit identifiers is commonly called CAN 2.0A and a CAN device that uses 29-bit identifiers is commonly called CAN 2.0B. This specification has two parts part A is for the standard format with an 11-bit identifier, and part B is for the extended format with a 29-bit identifier. īosch published several versions of the CAN specification and the latest is CAN 2.0 published in 1991. Released in 1991, the Mercedes-Benz W140 was the first production vehicle to feature a CAN-based multiplex wiring system. The first CAN controller chips were introduced by Intel in 1987, and shortly thereafter by Philips. The protocol was officially released in 1986 at the Society of Automotive Engineers (SAE) conference in Detroit, Michigan. Development of the CAN bus started in 1983 at Robert Bosch GmbH.
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