Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Introduction




Introduction

The CAN bus is a serial communications bus in which all connected control units can send as well as receive information. Data exchanges over a CAN operate at a rate of 100 to 500Kbps.

The CAN protocol was originally developed by Robert Bosch GMbH and the Intel corporation in 1988 for use in the automotive electronics industry to provide a standardized, reliable and cost-effective communications bus.

The CAN bus was originally introduced on BMW automobiles in 1992 740i/iL as a data link between the DME and AGS control units.