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G27 Reference point return check
Brother Speedio G-code · Mill
Moves to the reference point and checks that the machine is really there.
Format
G27 X Y Z
Addresses
| Address | What it does |
|---|---|
X Y Z | Position that should match the reference point |
How it works
Non-modal.
Example program
G49 (CANCEL LENGTH OFFSET)
G91 G27 Z0 (CHECK Z REFERENCE)
G90 (ABSOLUTE)
G91 G27 Z0 (CHECK Z REFERENCE)
G90 (ABSOLUTE)
Example is in inch. Check offsets and clearances first.
Watch out for
- Cancel tool length offset before using it or the check fails.
Related codes
G27 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Reference position return check |
| Mitsubishi M70 M80 | Reference position check |
| Heidenhain TNC (ISO) | Tangential departure on an arc |
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