Controller Area Network (Can) Message

Fig 1: Identifying CAN Message

GLL153620

Courtesy of VOLVO CARS CORPORATION

The message consists of the following components:

Identifier ("flag"), which indicates the message identity and prioritisation.
Data information (value, information, etc.).
Check sum, used to check that the message has arrived correctly
Stop signal, which indicates that the message has finished.

A complete CAN-message is called a frame.