CAN Communication
CAN COMMUNICATIONSystem Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Unit
NOTE: Confirming the presence of the following items helps to identify CAN system type.
Type 1:
Type 2:
Type 3:
TYPE 1/TYPE 2/TYPE 3
System diagram
Input/Output Signal Chart Part 1:
Input/Output Signal Chart Part 2:
Input/output signal chart
Type 4:
Type 5:
Type 6:
TYPE 4/TYPE 5/TYPE 6
Input/Output Signal Chart Part 1:
Input/Output Signal Chart Part 2:
Input/output signal chart
System diagram
Type 7:
Type 8:
TYPE 7/TYPE 8
Input/Output Signal Chart Part 1:
Input/Output Signal Chart Part 2:
Input/Output Signal Chart Part 3:
Input/output signal chart