CNC Machinist Calculator UltraG29 Return from zero
Fadal G-code · Mill
Moves from the zero position back to the point given in the block, through the point used by the last G28.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G29 [X] [Y] [Z]
Addresses
| Address | What it does |
|---|---|
X Y Z | Point to go to after the return |
How it works
Non modal.
Example program
N20 G91 G28 Z0. (Z HOME)
N21 G90
N22 G29 X1. Y1. Z.1 (BACK DOWN THROUGH THE MIDDLE POINT)
N21 G90
N22 G29 X1. Y1. Z.1 (BACK DOWN THROUGH THE MIDDLE POINT)
Example is in inch. Check offsets and clearances first.
Watch out for
- Most programs just rapid to the next point instead. Use it only if you understand the middle point.
Related codes
G29 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Return from reference position |
| Haas NGC | Return from reference point |
| Mitsubishi M70 M80 | Return from reference position |
| Brother Speedio | Return from reference point |
| Heidenhain TNC (ISO) | Last position becomes the pole |
| Centroid CNC12 Acorn | Return from reference point |
| Hurco WinMax (NC) | Return from reference point |
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