Hi Guys,

I'm looking for a bit of help with wiring up my spindle to my UB1

I'm looking to use PWM on the UB1 board.

My understanding is the following:

10v from the VFD - AH1 on the UB1
0v From the VFD - AL1 on the UB1
AO1 from the UB1 - AI on the VFD

In the UCCNC manual p24 it states the PWM software setup should be pin 1 Port 4. Is this correct for the above wiring? if so I'm confused as to why its port 4 as AH1,AL1 and AO1 are marked as port 3 on the board?

I'm sure I'm just missing something here.

Thanks Paul