Z axis cuts in the air - not plunging

Jeff65 wrote: changing the scale to -ve makes the other axis reverse as well it seems

It should not

I'm not using stepconfig anymore I manually edit the INI file

Jeff65 wrote: I'm not using stepconfig anymore I manually edit the INI file

Ok that's good. All the axis are independent of each other.

Does pressing page down make the z axis go down or up. It should go down

Did you correct the spelling in the ini file

I have now swopped 2 wires and set Home_offset to -1
pressing page down now makes the spindle come down and it matches what is on the screen.
However, if i press the 'home all' button the spindle goes the opposite way to the switch which is at the top end of the travel

I have also corrected the 'H' that was missing

Jeff65 wrote: I have now swopped 2 wires and set Home_offset to -1
pressing page down now makes the spindle come down and it matches what is on the screen.
However, if i press the 'home all' button the spindle goes the opposite way to the switch which is at the top end of the travel

I have also corrected the 'H' that was missing

That's good. Now you need to change the sign in home search vel to -

HOME_SEARCH_VEL = 1.000000 ##### changing the sign make the motor go opposite ie -1.0000
HOME_LATCH_VEL = 0.050000 ##### the same with this it should hit the switch and then back off
OME_FINAL_VEL = 2


The numbers are the speed it will move at in units per second ie 1.0000 will be 60mm per min

Sorry guys, i disslike all those changes. And yes, hecan do as you propose and it will work.

BUT

The question in my eyes is his code generator. I think most are setup to have the starting plane on top, with a value near to zero. Than dig into material with negative values. His code increases, like a sliced peace.
Jeff I would have a look to the gcode generator to invers his behaviour.
Mike