Found the problem. The X Current DRO was configured as read only.
For those who may have a similar problem I corrected it by:
1) load the Mach4Lathe profile.
2) Open the screen editor. (Operator/ Edit Screen)
3) Position cursor over the X axis DRO and Click the left mouse button
4) Within the X Current control panel move the cursor to the Editor Box
5) The box to the right of the Editor likely shows "Read Only"
6) Left click in that box to show its dropdown menu
7) Select In Place
Exit the screen editor and accept save changes