Hi Eddy

Yup, the ESS diag page show the 2 pins being active when the button is pressed, thats whats weird about it. To double check I bypassed the macros and put G90 G31 Z0 directly into the MDI and all I got back was No Probe Active so it has nothing do to with any of my scripts, macros or brains - it is a Mach/ESS/126 combo issue. I have an email into Steve at PMDX but as yet no reply

Cheers