IP/M, Mach3, and wireless MPG

[JAZZCNC]

Thanks for the comments, Jazz. Unfortunately, I don't think that this is the answer. You told me about this one a few years ago when i first built the machine.

Yes, I thought I had mentioned it before.!

've just been out to the machine and done a few experiments. Even with a homing offset of 10mm on all three axes, I get "limit switch triggered" if I use the MDI to move away from the home position. Same thing if I jog any two axes away from home with the MPG first. If I jog all three axes away, it works fine. Makes no sense to me!

Ermm it's a odd one indeed, I'd look at the switch wiring to make sure you haven't got a bad joint or something daft. Possibly a switch on it's way out.?
Could try using a little De-bounce in the plug-in to test if it's noise, and if that works and woring ok then I'd suspect a switch going down because you never need to use De-bounce with IP-M if wiring and switches are good.