G28 - "joint 0 on limit switch error" when limit switch tripped

Why am I getting "joint 0 on limit switch error" on homing X axis with:

G28 X250

This happens when my xmax limit switch is tripped. Isn't tripping an switch normal while homing? Why error?

I use NC limit switch.
I use debounce.

My linuxcnc config is at:
github.com/zhivko/PipeCutter/blob/master...achinekit/CRAMPS.ini

There are a couple of settings so read the docs on homing configuration ad in i files. I may have used the wrong values below but:

IGNORE_LIMITS = TRUE tells the system to ignore limits when homing.
HOME_OFFSET must be used to move the axis off the limit where there is as shared home/limit switch. If you do not do this moving to home with G28 will trigger a limit switch (because while its not homing, that is what it is)