There may be three reasons for this problem, please eliminate them one by one in order.
1. Poor contact of the foot switch of the laser marking machine
Solution: Re-plug and tighten the plug.
2. The software port of the laser marking machine is set incorrectly
The method of setting the port: Key “F3” Parameters – “Port” – “Start Marking IO” to change the “Inport”.
Note: The number of ports set by each manufacturer may be different, you need to consult the manufacturer before setting.
3. The foot switch is damaged
If the above two methods can not solve the problem, the foot switch needs to be replaced.