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CAN Communication

CAN COMMUNICATION

System 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.




- Models with VDC




- Models with TCS

TYPE 1

System Diagram:




System Diagram

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart

TYPE 2

System Diagram:




System Diagram

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart

TYPE 3

System Diagram:




System Diagram

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart

TYPE 4

System Diagram:




System Diagram

Input/Output Signal Chart:




Input/output Signal Chart

TYPE 5

System Diagram:




System Diagram

Input/Output Signal Chart Part 1:




Input/Output Signal Chart Part 2:




Input/output Signal Chart