My diagram shows typical Mach3 connection to a laser power supply.
If you are not certain of your particular connections you should seek the advice of a laser engineer in your area.
Tweakie.
my laser power supply is different from the diagram that you have sent me. my power supply consists of 6 pins that i should connect them to wires , one is 5V,TH,TL,WP,G,IN . at the moment i have connected pins IN and G to output inverter spindle .