MKS Laser Controller has no Z-axis (S-axis?)

I use the MKS DLC32 V.2.1 card to run my CNC Plasma Table. I need Z-axis control. The only workaround I found is to set it up first in Open Builds Control and then switch over to the MKS Laser app. You may wonder why I don’t just run the cut from Open Builds Control? The answer is because the plasma cutter screws up the computer with electromagnetic interference and stops the job after about a minute. But when I launch the g-code file directly from the card on the board the job is unaffected. C’mon Makerbase - gimme some Z-axis. I heard it was available on earlier versions.