Can you do the steps I’ve highlighted in this post here:
That way we can see what values are revealed through the $$ command in the MDI input box (with the log window open and ‘Hide Status…’ checked).
Basically I want to see if your “$13=0”, and then if your “$27=5”.
The $13=0 would mean your machine is set to millimeters, and the $27=5 would mean your machine should pull off 5 millimeters after homing. The $27 value may need to be increased, or re-set, to be out of the triggered range of the homing switch.
EDIT: Actually, I think the $27 value is always interpreted by the machine as millimeters (independent of the $13 setting), so knowing $13 isn’t essential, but it doesn’t hurt to know either…