CNC Machinist Calculator UltraHome › G-codes › Haas NGC › G09
G09 Exact stop, one block
Haas NGC G-code · Mill, Lathe
On mills: Exact stop, one block
Makes the axes come to a full stop at the end of the block before the next block starts. Use it for a sharp corner on one move only.
Format
G09 G01 X Y Z F
Addresses
| Address | What it does |
|---|---|
X Y Z | Move to stop exactly at |
F | Feed rate |
How it works
Non-modal, group 00. Use G61 for exact stop on every block.
Example program
G01 X2. F20. (CUT TO THE CORNER)
G09 Y1. (STOP FULLY AT THIS CORNER BEFORE THE NEXT MOVE)
X0. (CONTINUE)
G09 Y1. (STOP FULLY AT THIS CORNER BEFORE THE NEXT MOVE)
X0. (CONTINUE)
Example is in inch. Check offsets and clearances first.
Watch out for
- It slows the cycle at that corner, so use it only where the sharp corner matters.
On lathes: Exact stop, one block
Makes the axes decelerate to the exact programmed point before the next block starts. It only affects the block it is on.
Format
G09 G01 X Z F
Addresses
| Address | What it does |
|---|---|
X Z | End point of the move that stops exactly |
How it works
Non-modal, group 00.
Example program
G00 G54 X1.2 Z.1 (APPROACH)
G01 Z-1. F.006 (TURN)
G09 X1.5 (EXACT STOP AT SHOULDER CORNER)
G00 X1.7 (CLEAR)
G01 Z-1. F.006 (TURN)
G09 X1.5 (EXACT STOP AT SHOULDER CORNER)
G00 X1.7 (CLEAR)
Example is in inch. Check offsets and clearances first.
Watch out for
- For exact stop on many blocks use G61 instead.
- Use it on a sharp shoulder corner when you see rounding.
Related codes
G09 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | 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 |
| Centroid CNC12 Acorn | Decelerate and stop, one block |
| Hurco WinMax (NC) | Exact stop, one block |
| Fadal | Decelerate with feed ramps, exact stop |
Every G-code for Haas NGC 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 G09 in the app All Haas NGC G-codes