Added A axis to XYZ mill, what can be done in AXIS?

andypugh wrote:

Axis doesn't actually know where the centre of rotation is, so the preview just assumes that it is at X=0, Y=0, Z=0.
We have discussed ways that the preview could "know" where the rotation axis was, but nothing came of it.

Did I got you right, that in 2.7.x version AXIS assumes that center of rotation is at home point and there is no way to tell AXIS any other rotation point for the now?

I would expect it to be at least separated from machine HOME location first. E.g. additional parameter(s) in ini file to set up absolute or relative to HOME location coordinates of each rotational axis mounted onto machine table.

It also would be good to have similar to "Touch off" button, e.g. "Touch of work peace", "Touch off work table" or "Touch off rotary" if AXIS configured with at least one ANGULAR axis mounted onto machine table. Then work process would be next:

1. Run LinuxCNC;
2. "On" button;
3. "Home all";
4. Move tool to rotation axis and "Touch off work table";
5. "Touch off" if stock zero is the same as rotational zero
....

P.S. As far as I know, Mach3 always assume rotary axis is on the same plane as tool ZERO thus every "touch off" in Mach3 moves rotary plane to Tool ZERO location.