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M103 Reduce feed when plunging
Heidenhain TNC (ISO) M-code · Mill
Reduces the feed rate for moves into the material in the tool axis to F percent of the programmed feed.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
M103 F
Addresses
| Address | What it does |
|---|---|
F | Percent of programmed feed for plunging moves |
How it works
Modal. Cancel with M103 and no F.
Example program
N50 G01 G41 X+10 Y+10 F500 M103 F20 *
N60 Z-5 *
N70 X+80 *
N80 M103 *
N60 Z-5 *
N70 X+80 *
N80 M103 *
Example is in inch. Check offsets and clearances first.
Watch out for
- Stops the tool slamming into the floor on contours that ramp down.
Related codes
M103 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Doosan (Fanuc) | Right spindle forward rotation |
| Mazak (EIA) | Workpiece measurement STP end |
| Centroid CNC12 Acorn | Start action timer |
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