The UCCNC UB1 already have a PWM, can I use that to get 0-5VDC? Is there a way to bypass the AnaSpeed circuit? There is no AC voltage. All I have is the 24VDC and 5VDC from the UB1 and 5VDC from the spindle controller. Do I have to go DC(from spindle controller) to AC(AnaSpeed) back to DC(Lowpass Filter)?