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| Just two wires for Can Bus....Can Hi and Can Lo. Think of the two wires as mirror images of each other that the controllers send messages to/from each other. The terminators keep the messages from bouncing back and forth on the system.
In regards to the 5 volt setup. The voltages of the 2 wires should add up to 5 volts. Generally speaking, the more communication going on in between will result in more voltage difference between the 2 wires. With little communication going on, both wires should be approx. 2.5 volts apiece; the more communication going on, the Can Hi will get higher, the Can Lo will get lower(3 volts on Hi, 2 volts on Lo).
Also, there are different ISOBUS systems as well. Regular ISOBUS allows communication between tractor/implement; ISOBUS 3 allows the implement to control certain functions of the tractor(ie, a baler may command a tractor to speed up to keep it full). | |
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ISOBUS - CANBUS (explanation for dummy’s)
