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M51 C axis on
Centroid CNC12 Acorn M-code · Lathe
Turns on the C axis for live tool work. Locked option. Builders usually add an mfunc51.mac to stop the spindle first.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
none | No words |
How it works
Modal.
Example program
M5 ; SPINDLE STOP
M51 ; C AXIS ON
M151 ; UNWIND C
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Stop the spindle and go to G97 before M51.
Machine builders set many M codes, and they change by model and options. Check the M code list for your machine.
Related codes
M51 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Haas NGC | Built in M code relay 1 on |
| Doosan (Fanuc) | Bar-feeder command 2 |
| DMG Mori MAPPS (Fanuc) | Air blow ON |
| Mazak (EIA) | Error detect OFF |
| LinuxCNC Tormach | Spindle override control |
Every M-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 M51 in the app All Centroid CNC12 Acorn M-codes