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G90 Absolute distance mode
LinuxCNC Tormach G-code · Mill and lathe
Axis words are positions measured from the active work origin.
Format
G90
Addresses
| Address | What it does |
|---|---|
none | No words |
How it works
Modal, distance group. Usual default.
Example program
G20 G17 G40 G49 G54 G80 G90 G94 (INCH, SAFE START)
T1 M6 G43
S3000 M3
G0 X1 Y1 Z0.1 (POSITION FROM PART ZERO)
T1 M6 G43
S3000 M3
G0 X1 Y1 Z0.1 (POSITION FROM PART ZERO)
Example is in inch. Check offsets and clearances first.
Watch out for
- Put G90 in the safe start line. A program written in G90 run in G91 crashes fast.
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 |
| Brother Speedio | Absolute programming |
| Siemens 840D 828D | Absolute dimensions |
| Heidenhain TNC (ISO) | Absolute dimensions |
| Fagor 8055 8065 | Absolute programming |
| 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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