I am trying to work out how to setup mine.
But still waiting for stuff to arrive, and wanted to get on top of things before arrival.

I am going to use a stand alone THC and wont need Mach3 to control the Z as it wont be there (as far as Mach3 is concerned)
I also want to slave A to Y and have auto squaring of the axis while homing, so I need to be able to work out how to program Mach3 to home just the X, Y and A
The control board will be a USB Mach3 5 axis with separate stepper drivers. The THC lifter has it's own DC motor and is self controlling.

If I leave out DoButton( 24 ) ' this homes the Z

DoButton( 22) ' this homes the X
RefCombination( 10 ) ' this will home the Y and A at the same time.

Not sure if this is right, someone please put me straight. Thanks.