Need some ideas on how to set up a home built OD/can grinder

I know this is an unusual machine. The requirement is to be able to have the work head (spindle) tied to the X axis (position mode) and run at a selected rpm for OD grinding. In reading some of the posts the mux command that was used for A axis seems to be what is needed I think.

Would this be described as a spindle A or C axis?

I would also need to have a U and W axis for the programmable wheel dresser. The position data from the dresser would need to be used to modify the X and Z offsets.

This is a small stepper (Nema 23) driven machine for use on model engines. The dresser is mounted to the rear of the wheel head and can move in the X and Z machine axis.

Any ideas or comments would be greatly appreciated.

Thanks MarkD

Thanks Andy

I have found a program that generates the G code to grind the cam profile. My idea is to grind the bearing journals in spindle mode and switch to C axis mode to grind the cam profiles.
A bigger problem maybe to modify the wheel offsets based on the wheel dresser.
Any thoughts on this?

Ok my first problem is that I have not correctly addressed the enable command on the work head which is a stepper. Please find the hal and ini files and photos of the work head.
Can someone look at the files to see what I did wrong.

The Photo was skipped

I will try again. I did not mention it before that I am using a 5 axis bob with the work head on the A axis.

Most stepper drivers include an enable connection. What is rarely made clear is that by applying a voltage here, you are actually disabling the stepper, not enabling it. So if you have connected a wire to this signal, try removing it.

Thank you for the reply.
The stepper is wired the same as the X and Z steppers which work.
When I use the unaltered config files (which sets the work head up as a Aaxis it works fine. The enable pin is the same for all of the axis.