This is the gcode I am trying to use but it doesn't like the last line and doesn't show up in the screen.
g031 z-8 f20     " probing"
g092 z0          " zero z axis"
g0z1.71          " running my z to cutting height"
g092.2 z0        " rezero my z axis"

any help would be appreciated
Don

Hi Don,

You need a carriage return at the end of your GCode file. Just add the character  %  as a final line.

Tweakie.