Hi Hood,
Thanks for your reply, yes I have separate homing and limit switches for all axis and this message shows up right after referencing all X, Y & Z axis and running Mach3 on a Pentium 4 Duo Core - 2.2GHz and 2GB RAM. All seems to work as it should be but you know when you see a warning you start wondering if everything is actually OK. I do not recall changing limits on Mach3 although I will have another look to see if there have been any changes. As regarding to active state if any was altered it would signal out that it has reached it's position as soon as I hit the reference button. At the moment I am fine tuning / setting my servo motors, do you think this may be the cause? Could it be the "Motor Movement Profile" settings in the config menu?
Thanks
Marten Grima