[leharker]

I have been trying to understand the VB programming for the Mach3 CNC program and have a question I hope someone can answer. I have some programming experience and understand most of what I see but there are regular references to UserDRO's such as this: PlateThickness = GetUserDRO(1151) 'Z-plate thickness DRO.
How does a person know which UserDRO reference goes this which entry on the screen?
Thanks for the help.

[ger21]

You can define the user DRO # in a screen designer, like Machscreen or Screen4.
When you're program uses User DRO's, then typically, you are the one that creates the DRO's.

In your example, you'd need to add UserDRO 1151 to the screenset you're using, unless you're using a screenset that someone else already added.

The default mach3 screenset contains no UserDRO's.
Hope this makes sense.