eCAN_UserManual_Eng_DM v1.0.1

eCAN User Manual
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1. CAN
CAN was developed to cause this problem by German company Bosch in 1986. It used bus communication method
rather than 1:1 communication method which UART based serial communication has, and various technologies
were incorporated to prevent communication conflicts.
1) Message Directional
ID is assigned to CAN according to the priority of the message and used to communicated. This causes each node
to self-judge the message delivered to each node and ignore the message which is except it needs.
2) Enhanced Error Mechanism
Several mechanisms have applied to CAN to improve communication reliability. If communication state detection,
error check and management were carried out in conventional SW method, CAN can detect and handle errors
occurring during communication due to the error detection mechanism built in HW in real time.
3) Multi-Master
CAN communication is conducted based on priority of each note and message without a network administrator which
manages the network. If arbitrary node A message is assigned with the highest priority ID, the rest of the nodes
communicate according to the priority of each ID after the A message is sent.