Controller Area Network Questions

[vijay s]

Hi Folks,

I need a clarification in CAN Controllers. Will the Transmitting Node Receive Same message while it is Transmitting.

i Knew in loop back condition ,CAN controllers receive same message it is Transmitting. Is this happens in Normal Communication.

 

[bigdogguru]

According to the Protocol Standard:

Communication in the CAN network is based on content-related addressing. It is not the CAN nodes that have identifiers, but rather the data and remote frames are identified (identifier — ID). So, all CAN messages can be received by every CAN node (broadcasting). Each receiver is independently responsible for selecting CAN messages. Such receiver-selective addressing is very flexible, but it requires that each receiver filters the received CAN messages (acceptance filtering).

The CANbus utilizes a line topology which allows every node access to the same physical level.

CAN Protocol

Hope this help,
Ciao