My machine has taken to erratic behaviour when homing all axis. z and x ok but sometimes y will back off  the limit switch as it should and other times just stops when it hits the switch and gives  an error message. Where is the routine that controls thiis? Can it be corrected iby an edit  or is it a corruption further back? Thanks, Ralph

what is the error message?
Hood

YOu may have a sloppy switch, try increasing the debounce setting.

(;-) TP

Well, I replaced the switch and it works correctly. If the old one did not produce a sharp, complete break, that could be responsible. Ralph