Hi, I'm new to this forum and Mach3. 
I'm in the process of converting my SX3 mill to CNC. Before I connect the PC to the M/C I  thought I would load Mach3 on my PC and try it out as a stand alone.
It is probably my inexperience but I can't get the jog to move in incremental steps. The DRO's seem to move OK when Jog constant but don't work in Step. Whats wrong?.
Can somebody please walk or "Step" me trough the Jog modes?
Thanks Chris

Hi Chris, welcome aboard !
R3.043.022 here, what are you running ?
A bit different than the manual states.
STEP will obey the F rate unless you set F0, then it defaults to 60 UPM.
You might have a "0" Feedrate set ?
MDI F 20 and see what happens.
Russ

I'm running "Demo Version R3.043.066"
Feedrate 20
Slow jog rate 100%

Jog Mode Yellow "Step" lamp On , Press screen jog button(s) No DRO change. 
Jog Mode Yellow "Cont" lamp On,  Press screen jog button(s) DRO count as I would expect. 
Cheers
Chris

Sorry! guys I just found the "Axis Inhibits" on the settings screen.

 
That would inhibit ALL jogging for the selected axis.
Doesn't explain your problem as you defined it.
If all is well, then you're good to go.