Connecting a Mafell router with digital interface to BlackBox X32

I'm hoping someone can help me out with a newbie question. I have a Stepcraft MM-1000 DI milling motor (which is basically a rebranded Mafell FM 1000 PV). This is equipped with a 4-pin "PV interface." Is it possible to connect this directly to the BlackBox X32? If so, could someone help me figure out which wire goes where?

I've attached the wiring diagram from the user manual as a PDF. I've also found several sources for connecting to a Duet, but I don't have a firm enough grasp on this part yet to get beyond following exact instructions. Those sources linked below, along with the basic gist of the wiring setup.

Thanks for your help!

Nigel

Wiring a PV Cable from a Mafell Router into the Duet?
Connect a AMB Kress or Mafell spindle with digital control

The cable for the 4-pin connector uses this setup:

Pin 1 : Upv : Brown = power supply (PV Interface)

Pin 2: Us : White = control voltage speed (PV Interface)

Pin 3 : Uo: Black = display remaining runtime in overload mode (PV Interface)

Pin 4: GND: Blue = reference potential for voltages of the PV Interface

 

Thanks, David! That makes sense. Now that I'm looking ahead at the GRBL settings and G-code it's starting to click a bit better. It's that power supply wire that is still throwing me. It seems to suggest that the onboard controller needs DC power to operate, separate from the AC power to the motor. Anything from 8-56 volts, otherwise it sticks to manual operation. I guess we'll see if I'm able to control it with that cable capped off and go from there. I'll report back when I get around to this! Thanks again.