Hi guys
completely new to messing with the button functions etc
Friend of mine is looking to have a button added to the axis DRO that will half the readout
ie if the X axis reads 200mm he wants the button to halve it and rewrite the DRO as 100mm...
is this possible?

and if so , how the heck do I do it?

thankooo
Glen

Glen,
Yes it is possible. I assume you this is in reference to Mach3. If Mach4, the following does not apply.
 
1. You will need a screen editor, like MachScreen to add the button.
2. You can write / assign some code to manipulate the DRO value in the screen editor.
 An option could be to ceate an M code which can do the same but you will need to call the Mcode via the MDI line.

Welcome to the learning curve........................,

RICH

  

Following the suggestion by Rich, if you add a new screen button then on the button press the following button code will half the value shown in the X axis DRO half it and then write the new value back to the X axis DRO.

Tw=GetOEMDRO(800)
Call SetOEMDRO(800,Tw/2)

Tweakie.