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G90 Absolute programming
Brother Speedio G-code · Mill
All positions are measured from work zero.
Format
G90
How it works
Modal, distance group.
Example program
G90 G54 G00 X1. Y1. (ABSOLUTE POSITION)
X2. (TO X2 FROM ZERO)
Y2. (TO Y2 FROM ZERO)
X2. (TO X2 FROM ZERO)
Y2. (TO Y2 FROM ZERO)
Example is in inch. Check offsets and clearances first.
Watch out for
- Put G90 in the safe start line.
Related codes
G90 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Absolute programming |
| Haas NGC | Absolute positioning |
| Mazak (EIA) | Absolute programming |
| Okuma OSP | Absolute programming |
| Mitsubishi M70 M80 | Absolute programming |
| Siemens 840D 828D | Absolute dimensions |
| Heidenhain TNC (ISO) | Absolute dimensions |
| Fagor 8055 8065 | Absolute programming |
| LinuxCNC Tormach | Absolute distance mode |
| Mach3 Mach4 | Absolute mode |
| Centroid CNC12 Acorn | Absolute positioning |
| Hurco WinMax (NC) | Absolute mode |
| Fadal | Absolute positioning |
| Swiss (Citizen Star) | OD turning cycle |
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