|
Cedar Rapids, Iowa | Any plain old resistor can function as a passive terminator.
While CAN is just two wires, it's often convenient to add two more wires (power and ground) the entire length of the bus so that any node you plug in can be powered from the cable. Doing this requires putting power into the cable somewhere. That's what an active terminator does.
http://manuals.deere.com/omview/OMPFP13250_19/RW00482,000018D_19_20...
Then you have the scenario with a tractor where you may or may not have a CAN implement plugged in. There has to be a smart terminator inside the plug on the back of the tractor so that without an implement, it acts as the terminator. With an implement attached, it doesn't act as a terminator, since the bus just got a lot longer and there will be a terminator at the back of the implement. | |
|
CANBus terminators... what are they anyway?
