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G98 Cycle return to initial point
Hurco WinMax (NC) G-code · Mill
After each hole the tool returns to the Z level it was at before the cycle started. Use it to clear clamps between holes.
Format
G98
Addresses
| Address | What it does |
|---|---|
none | No words |
How it works
Modal, group 10.
Example program
G43 H02 Z1. (INITIAL LEVEL Z1.)
G99 G81 X1. Y1. Z-.5 R.1 F10. (BACK TO R)
G98 X3. (THIS HOLE BACK TO Z1. OVER CLAMP)
G80 (CANCEL)
G99 G81 X1. Y1. Z-.5 R.1 F10. (BACK TO R)
G98 X3. (THIS HOLE BACK TO Z1. OVER CLAMP)
G80 (CANCEL)
Example is in inch. Check offsets and clearances first.
Watch out for
- Basic NC: in G98 the Z depth is measured down from the initial point.
Related codes
G98 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Canned cycle return to initial level |
| Haas NGC | Canned cycle initial point return |
| Mazak (EIA) | Canned cycle return to initial point |
| Mitsubishi M70 M80 | Canned cycle return to start level |
| Brother Speedio | Canned cycle return to initial point |
| Heidenhain TNC (ISO) | Set label |
| Fagor 8055 8065 | Return to initial plane |
| LinuxCNC Tormach | Cycle retract to start height |
| Mach3 Mach4 | Cycle return to initial point |
| Centroid CNC12 Acorn | Canned cycle return to start height |
| Fadal | Fixed cycle return to start plane |
| Swiss (Citizen Star) | Feed per minute |
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