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G99 Cycle return to R plane
Hurco WinMax (NC) G-code · Mill
After each hole the tool returns to the R plane. Faster when there is nothing in the way.
Format
G99 [R]
Addresses
| Address | What it does |
|---|---|
R | R plane. BNC needs R with G99 |
How it works
Modal, group 10.
Example program
G43 H02 Z1. M08 (INITIAL LEVEL)
G99 G81 X1. Y1. Z-.5 R.1 F10. (RETURN TO R .1)
X2. (NEXT)
G80 G00 Z1. (CANCEL)
G99 G81 X1. Y1. Z-.5 R.1 F10. (RETURN TO R .1)
X2. (NEXT)
G80 G00 Z1. (CANCEL)
Example is in inch. Check offsets and clearances first.
Watch out for
- ISNC: R is an absolute Z level and is required in every cycle. BNC: R is a positive distance down from the initial point.
- The initial level stays set even while in G99.
Related codes
G99 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Canned cycle return to R level |
| Haas NGC | Canned cycle R plane return |
| Mazak (EIA) | Canned cycle return to R plane |
| Mitsubishi M70 M80 | Canned cycle return to R plane |
| Brother Speedio | Canned cycle return to R plane |
| Heidenhain TNC (ISO) | Tool definition in the program |
| Fagor 8055 8065 | Return to reference plane |
| LinuxCNC Tormach | Cycle retract to R plane |
| Mach3 Mach4 | Cycle return to R plane |
| Centroid CNC12 Acorn | Canned cycle return to R plane |
| Fadal | Fixed cycle return to R0 plane |
| Swiss (Citizen Star) | Feed per revolution |
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