You should properly configure your machine, or you will continue with problem.
Did you go through Lightburn Common Grbl Settings?
Also is one for a CNC3018 type, not sure what you have.
Might also check out the docs on Coordinate and Job Origin.
You have Lightburn set for ‘inches’ and grbl controller set for mm.
$13=1 for inch
$32=1 for laser mode
$110 through $112 are maximum rate or X, Y and Z axes.
$120 thought $122 also seem overly aggressive, these are max acceleration.
$130 through $132 is for the max travel in your X, Y and Z directions. Doubt these are the proper values. Most of us don’t have a z axis that can run 500mm, maybe yours can…
Here is a ‘old’ grbl register values and what they mean. These are from a pre 1.0 grbl release, so $32 is not present. Hope it helps.
Good luck 
Sorry missed Ricks answer…
