Quote:
Originally Posted by mcs
I am keen to see what happens with the wiring Delboy, that is the only thing I am worried about with this retrofit. Where do the CAN wires attach and how.
|
Hi Mike,
Hope you have had time to study Del's excellent write up regarding the ACC retrofit. The CAN connections and wiring for the ACC is relatively simple because it is its own CAN, known as CAN-E or Extended CAN, with only two network nodes - the radar and the gateway.
It has its own network because the radar broadcasts a lot of data at the highest importance level.
If the ACC nodes were on another CAN network this would result in lower priority data being delayed as only one CAN payload can be on the BUS (which would nearly always be the ACC data) Therefore a dedicated CAN for ACC is the best solution.
To simplify the CAN-E network even further, from ISO11898-2, the resistors are terminated in the CAN Controllers within each node.
So in reality this means only a simple twisted pair is needed between the radar and the gateway.
