Are you triggering your plasma torch manually? because in a typical CNC plasma machine it will plunge on the material then there`s some magnetic switches to activate when the torch holder with springs gets lifted, then it backs up (torch height controller) then triggers the plasma machine then fine tunes the height to it`s optimum amperage (amp sensor in the plasma machine in conjunction with the torch height controller module) on the plasma machine then that`s the time it will move to the program path.