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CYCLE85 Boring or reaming, feed in and feed out
Siemens 840D 828D G-code · Mill
Feeds to depth, optional dwell, then feeds back out to the reference plane plus safety distance. FFR is the feed in and RFF the feed out. Used for reaming.
Format
CYCLE85(RTP, RFP, SDIS, DP, DPR, DTB, FFR, RFF)
Addresses
| Address | What it does |
|---|---|
RTP | Retract plane, absolute |
RFP | Reference plane, absolute, usually the part top |
SDIS | Safety distance above the reference plane, no sign |
DP | Final depth, absolute |
DPR | Final depth relative to the reference plane, no sign. Program DP or DPR and leave the other empty. |
DTB | Dwell at depth in seconds |
FFR | Feed going in |
RFF | Feed coming out |
How it works
Non modal. It runs once at the current position. Use MCALL to repeat it at every following position.
Example program
T8 D1 ; 10 MM REAMER
M6
G0 X40 Y40 S300 M3
Z50
…
M6
G0 X40 Y40 S300 M3
Z50
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Feeds FFR and RFF are written in the call, not taken from the active F.
- A faster RFF saves time but can mark a reamed bore. Test on the first part.
Related codes
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Open CYCLE85 in the app All Siemens 840D 828D G-codes