CNC Machinist Calculator UltraG68 Coordinate system rotation
Fanuc G-code · Mill
Rotates the program around a center point by an angle in the current plane. Used when the part sits at an angle or for a rotated pattern.
Format
G68 X Y R
Addresses
| Address | What it does |
|---|---|
X Y | Center of rotation in the G17 plane |
R | Rotation angle in degrees, plus is counterclockwise |
How it works
Modal, group 16. Cancel with G69.
Example program
G90 G54 G00 X0. Y0. (PART ZERO)
G68 X0. Y0. R15. (ROTATE 15 DEG CCW)
M98 P1400 (CUT FEATURE)
G69 (ROTATION OFF)
G68 X0. Y0. R15. (ROTATE 15 DEG CCW)
M98 P1400 (CUT FEATURE)
G69 (ROTATION OFF)
Example is in inch. Check offsets and clearances first.
Watch out for
- This is an option on some models.
- Select the plane first. Do not change the plane while rotation is on.
- Whether R is absolute or added to the current angle in G91 depends on a parameter.
Related codes
G68 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Coordinate rotation |
| Mazak (EIA) | Coordinate rotation |
| Mitsubishi M70 M80 | Coordinate rotation |
| Brother Speedio | Coordinate rotation |
| Fagor 8055 8065 | Stock removal along X (lathe) |
| Mach3 Mach4 | Rotate coordinates |
| Centroid CNC12 Acorn | Coordinate rotation on |
| Hurco WinMax (NC) | Coordinate rotation |
| Fadal | Coordinate rotation |
| Swiss (Citizen Star) | Balance cut or double turret mirror on (Star) |
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