In a nutshell when you install the module in a loco you perform a load test and you’re done, no CV's. Its simply a matter of coupling to a car which you hold still and hitting a button on the controller. The loco revs up, spins the wheels, done.
As mentioned above the locos in the consist will now communicate with each other, “Hey you working too hard? Ok we'll pull a little harder!” Kind of thing.
The beauty of it is the controller has a screen that will show you the load, current draw, and temp of the loco while in motion.
Pretty sweet!