I have converted a machine (Redsail C150+) to MKS DLC32. The upper left corner is X=0, Y=0, and the lower right corner is X=1500, Y=-900. Using the MKS DLC32 touchscreen, I can jog correctly, and hard homing works.
When I connect LightBurn to the machine via USB, the Y-axis moves in the opposite direction. If I configure the machine via LightBurn so that everything works correctly, the Y-axis is inverted on the touchscreen.
Could this be a bug in the MKS DLC32 firmware?
Did you configure the origin correctly? LightBurn expects the front-left corner to be 0,0. I’d change the coordinate offsets to move the machine origin to the front-left.
Does Tham mean I should write:
G10 L2 P1 Y-900
This was the trick! However, I found it difficult to find information in LightBurn’s documentation. There could be an information link under Machine Settings.
Yes. Great that it worked out that way 
For my information… how does the posted fix correct the Y axes direction?
Since LightBurn can only handle a coordinate system with positive values, G10 L2 P1 Y-900 adjusts the workspace coordinate system so that the origin is placed in the front left corner instead of the rear left corner. This makes LightBurn work correctly.
The machine still retains its home position in the rear left corner, which means that the jog function on the touchscreen works in the correct directions.
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