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G18 ZX plane select
Centroid CNC12 Acorn G-code · Mill
Selects the ZX plane for arcs. Used for arcs that move in X and Z, such as a ball nose profile.
Format
G18
Addresses
| Address | What it does |
|---|---|
none | No words |
How it works
Modal, plane group.
Example program
G20 G17 G40 G49 G80 G90 ; INCH, SAFE START
T1 M6 ; LOAD TOOL 1, Z GOES HOME FIRST
G54 G0 X0 Y0 ; WORK OFFSET 1
S3000 M3
…
T1 M6 ; LOAD TOOL 1, Z GOES HOME FIRST
G54 G0 X0 Y0 ; WORK OFFSET 1
S3000 M3
…
The full 8-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- In G18 the CNC12 manual notes that G2 looks counterclockwise from the usual view. Graph the job first.
- Return to G17 before cutter comp or drilling cycles.
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 |
| Okuma OSP | Plane select ZX |
| 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 |
| Hurco WinMax (NC) | ZX plane select |
| Fadal | ZX plane select |
| Swiss (Citizen Star) | XZ plane select |
Every G-code for Centroid CNC12 Acorn in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open G18 in the app All Centroid CNC12 Acorn G-codes