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G44 Tool length comp minus
Mitsubishi M70 M80 G-code · Mill
Subtracts the H offset from Z moves. Rarely used today.
Format
G44 H Z
Addresses
| Address | What it does |
|---|---|
H | Length offset number |
Z | First Z move |
How it works
Modal, group 08. Cancel with G49.
Example program
G44 H05 Z1. (MINUS LENGTH COMP)
G01 Z-.1 F10. (CUT)
G49 G00 Z5. (CANCEL)
G01 Z-.1 F10. (CUT)
G49 G00 Z5. (CANCEL)
Example is in inch. Check offsets and clearances first.
Watch out for
- Using G44 with offsets set for G43 sends the tool down by twice the length. Almost all shops use G43.
Related codes
G44 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Tool length compensation minus |
| Haas NGC | Tool length compensation minus |
| Brother Speedio | Tool length offset minus |
| Fagor 8055 8065 | Tool length compensation cancel |
| Mach3 Mach4 | Tool length offset minus |
| Centroid CNC12 Acorn | Tool length compensation minus |
| Hurco WinMax (NC) | Tool length offset minus |
| Fadal | Tool length compensation negative |
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