Settings -> Override Limits  enabled maybe?

Settings -> Override Limits  enabled maybe?

Yes mate, auto override limits is enabled and always has been. Changing it back still doesn't make any difference though.

Panic over guys, I think I've got it sorted !!
Somehow the Z++ had manged to change itself from active low to active high, I have no idea how this happened or how long it has been like that but all my switches are now working again.

I wonder if you considered soft limits. They have saved my butt so many times! Every time I ignored the warning I watched my job go to hell!!!

I wonder if you considered soft limits. They have saved my butt so many times! Every time I ignored the warning I watched my job go to hell!!!

I have never used them mate, never found a need  (as long as my limit switches were operational) 

Glad to see you got it fixed. Just had a USB keyboard pull a real boner. Hit any key get the reference all home command. The machine takes off and homes, ruin a small job. Thought it was Mach 3 but noticed the shift lock light would not function, swapped junk keyboard for Logitech, and back on track.