Selecting which DRO you'd like to see is fine I think. Don't know though why would someone want the old type DRO - it's either you use the tool table in Mach or not, and if you do you then you have an offset for each tool.
The way I do tapping is by using the spindle as a rotary axis (the SwapAxis command in swaps outputs of spindle and 'A' axis) and then program like this:
G1 Z-10 A10
This will rotate the spindle 10 revolutions and advance the tap 10mm into the workpiece. So this will tap 1mm pitch thread to a depth of 10mm - M6x1 for instance. Then a reverse move to pull the tap out.
An option for a wizard would be entering the pitch and depth and it would calculate the number of turns of the spindle and output the Gcode.
As I said, this screen set is really cool and very useful.
If I may suggest something, I'd love to see the new Tool DRO, Brian implemented for Turn, being added to it. This OEM DRO 246 and it shows current tool and current offset in the format xxyy. Adding a 'T' in the formatting string makes it look even better: Txxyy.
Also, as I have a servo motor on my spindle and do (kind of) rigid tapping and indexing I would like to see a rotary axis DRO as suggested above by Rich.
That's COOL, Wes! Very good looking too and I think you succeeded with the "professional look". I know I will be interested in it. When do you think it will be finished? I have another lathe I am converting to Mach3 and I plan to use it for one off''s and was looking for something like this.
Congratulations on your first machine rebuilt. Looks like you did well. This is a very good machine to own. I have an Emco C5, which I like, and have been looking at acquiring one of these larger versions with automatic chucks.
I would omit the MDI screen. Don't think a dedicated MDI screen is needed. The MDI is needed both on the setup screen and the run screen.
On the main screen needed also spindle and coolant control buttons as well as tool number and offset DROs - the new DROs Brian has just added. Also, these DRO's are needed on the setup screen. Spindle control is also needed on the setup page, since you touch off on the setup screen.
Issue number 2 is resolved - apparently was my fault of some sort. Now seems to work.
Issue number 3 appears to be a touch screen issue - if you statically hold your finger on one spot it just quits after a couple of seconds. Moving the finger around on the button keeps it thinking you're still there. Hope I can find some parameter in the touch screen software to resolve this.