First of all thanks for replying.
OK, my nesting software gives G41 when CW and G42 when CCW and G40 at the end.
So, now, mach recognizes the kerf on/off and stop? And where can i set the kerf width?
Because (if i understand well) kerf is the gap that plasma leaves on material through cut.
So, if i have a rectangle shape of 100 x 100mm and the kerf width is 3mm, the path should be at 103 x 103mm,
and the final cutted rectagle will have the 100 x 100mm.
Can you help on this?