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G18 Plane select ZX
Okuma OSP G-code · Mill
Selects the ZX plane for arcs and cutter radius compensation. Used for arcs in the side view.
Format
G18
How it works
Modal, plane group. Return to G17 when done.
Example program
O1000 (OKUMA MILL SAMPLE)
N1 G15 H1 (WORK COORDINATE SYSTEM 1)
N2 G00 G90 G18 (SELECT ZX PLANE)
N3 G56 Z1. H1 (LENGTH OFFSET)
…
N1 G15 H1 (WORK COORDINATE SYSTEM 1)
N2 G00 G90 G18 (SELECT ZX PLANE)
N3 G56 Z1. H1 (LENGTH OFFSET)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Cutter compensation and arcs use the active plane. Cancel G41 or G42 before changing plane.
- Put the plane code in the safe start line of every program.
Related codes
G18 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | ZX plane select |
| Haas NGC | XZ plane selection |
| Mitsubishi M70 M80 | ZX plane select |
| Brother Speedio | ZX plane select |
| Siemens 840D 828D | ZX working plane |
| Fagor 8055 8065 | ZX plane select |
| LinuxCNC Tormach | XZ plane select |
| Mach3 Mach4 | XZ plane |
| Centroid CNC12 Acorn | ZX plane select |
| Hurco WinMax (NC) | ZX plane select |
| Fadal | ZX plane select |
| Swiss (Citizen Star) | XZ plane select |
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Open G18 in the app All Okuma OSP G-codes