What I like about CAN is removal of several PWM wires all traveling the same path and having to check which pin number it was in and verifying correct orientation on both ends several times during the build when things would get disassembled and reassembled. With CAN, 1 RJ45 cable from the cRIO from just the CAN bumper to the first device and then daisy chain from there. No need to verify orientation and keep the log of which pin to which device ... all that is in the code and addressing log.
How many times did your robot temporarily lose functionality after a re-build because a PWM was not inserted into the correct pin ...
