Here is an example of what you should see with no THC voltage control or a manual mode setup. The torch moves down to touch the metal and find zero, it will need either a position switch, or more typically it will sense this with the THC by direct connection of the tip to the metal. This will send a trigger signal to Mach to set zero. Then the torch will rise to pierce height, start the arc, time out for the pierce, then move to cut height and start the cut. It should repeat this for each cut start to account for the metal no being perfectly flat. Note that this will only work for pretty short cuts as the metal may not be aligned with the axis, but it works fine for small things. The torch does not need to raise as high between cuts as this one is, but it helps if you expect possible tip ups.