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G203 Universal drilling
Heidenhain TNC (ISO) G-code · Mill
Drilling with decreasing peck depth, chip breaking and dwell. Klartext: CYCL DEF 203 UNIVERSAL DRILLING.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G203 Q200 Q201 Q206 Q202 Q210 Q203 Q204 Q212 Q213 Q205 Q211 Q208 Q256
Addresses
| Address | What it does |
|---|---|
Q202 | First plunging depth |
Q212 | Decrement per peck |
Q213 | Chip breaks before full retract |
Q205 | Minimum plunging depth |
Q256 | Retract distance for chip breaking |
How it works
DEF active. Runs only with G79, M99 or M89.
Example program
N50 G203 UNIVERSAL DRILLING
Q200=2 ;SET-UP CLEARANCE
Q201=-40 ;DEPTH
Q202=8 ;PLUNGING DEPTH
…
Q200=2 ;SET-UP CLEARANCE
Q201=-40 ;DEPTH
Q202=8 ;PLUNGING DEPTH
…
The full 10-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- With Q213 greater than 0 the tool only backs off by Q256 between pecks, then fully retracts after that many breaks.
Related codes
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