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G9 Decelerate and stop, one block
Centroid CNC12 Acorn G-code · Mill
Makes the move on this line slow to a full stop with a .01 second dwell at the end. Same as G4 P.01 after the move.
Format
G9 G1 X Y Z F
Addresses
| Address | What it does |
|---|---|
X Y Z | Move that must stop sharp |
How it works
One shot. Only the line it is on.
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
- Use it for one sharp corner. Use G61 if every block must stop.
Related codes
G9 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Exact stop, one block |
| Haas NGC | Exact stop, one block |
| Okuma OSP | Exact stop, one block |
| Mitsubishi M70 M80 | Exact stop check, one block |
| Brother Speedio | Exact stop check |
| Siemens 840D 828D | Exact stop, one block |
| Fagor 8055 8065 | Arc defined by three points |
| Mach3 Mach4 | Exact stop, one block |
| Hurco WinMax (NC) | Exact stop, one block |
| Fadal | Decelerate with feed ramps, exact stop |
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Open G9 in the app All Centroid CNC12 Acorn G-codes