Re: Got a CNC 3 years ago and gave up on it.
I'm running grbl 1.1 and UGCS Classic (not platform).
When machine connects the console shows this:
>>> $G
[GC:G0 G54 G17 G21 G90 G94 M5 M9 T0 F0 S0]
ok
G54 offset is active, G90 absolute positioning is active, G21 meric is active, and feed is 0.
There are 2 sets of machine positions in the gui, If you make a G00 or G01 worry about the numbers under "Work Position".
A command like "G01 X0 F1000" at machine start-up won't move 0mm, it will move until the "Work Position" reads X0. To simply move 10mm from current position switch to G91.
Anyone who says "It only goes together one way" has no imagination.