How to set up a auxiliary gas control for cutting and engraving

When user use RDC6442G or RDC6442S to do a cutting and engraving, different auxiliary gas pressure should be set according to engraving and cutting . usually engraving should set a low pressure auxiliary gas and cutting should set a strong gas . 

For RDC6442 series， there is only a port named <wind> to control auxiliary gas. here is a example to use <status> and <wind > ports to finish a high pressure and low pressure auxiliary gas.

in order to eliminate the electric interference from the solenoid valve, suggest users to use a independent power supply . Only one 24V power supply is not suggested .