That height is hardcoded in Motion (I think we retract to the max Z minus a few mm).
We’re looking at more configurability in Motion (as long as it doesn’t cause support trouble) but I’m not sure I see us adding the ability to change tools at a lower height.
The only thing that occurs to me as a work around is to modify your post to:
- Go to a predetermined tool change HEIGHT - G53 G0 Z __
- Go to a predetermined tool change location - G53 G0 X __ Y__
- Do an M0 to pause
- Change the tool
- Output an M6T__
- Click “OK” because you’ve already changed the tool.
This would require a change to the post and an extra button click but I think it would otherwise work.