hi i have the XHC WHB04B pendant and i like it very much,but there is one thing that i cant find out.
The z axe dro output are the same on pc and pendant,but my x axe shows different numbers,e.g- x axe on pc 100 mm  and the pendant shows 50 mm or is that normal.

Lathe set to diameter mode but the pendant either isn't set or doesn't recognise it.  Mach 3 should say diameter mode under the dros.  Just ignore the pendant.