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G75 Fixed point approach
Siemens 840D 828D G-code · Mill and lathe
Moves the listed machine axes to a fixed point stored in machine data, for example a tool change point. FP= picks which fixed point.
Format
G75 FP= X1=0 Y1=0 Z1=0
Addresses
| Address | What it does |
|---|---|
FP= | Fixed point number. FP=1 if not written. |
X1= Y1= Z1= | Machine axes to move. The value is not used but must be written. |
How it works
Non modal. Must be in its own block.
Example program
G0 Z50 ; CLEAR THE PART
G75 FP=1 Z1=0 ; Z TO FIXED POINT 1
G75 FP=1 X1=0 Y1=0 ; X AND Y TO FIXED POINT 1
G75 FP=1 Z1=0 ; Z TO FIXED POINT 1
G75 FP=1 X1=0 Y1=0 ; X AND Y TO FIXED POINT 1
Example is in inch. Check offsets and clearances first.
Watch out for
- The fixed point positions come from machine data set by the machine builder. Check them before first use.
- Move Z first in its own G75 block to avoid dragging the tool across the part.
Related codes
G75 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | OD and ID peck grooving cycle |
| Haas NGC | OD and ID grooving cycle |
| Mazak (EIA) | X axis grooving cycle |
| Okuma OSP | Automatic chamfering |
| Mitsubishi M70 M80 | Longitudinal cut-off and grooving cycle |
| Fagor 8055 8065 | Probing move until touch |
| Centroid CNC12 Acorn | OD or ID groove peck cycle |
| Hurco WinMax (NC) | Multi quadrant arc mode (BNC) |
| Fadal | Tapping head cycle |
| Swiss (Citizen Star) | Grooving cycle in X |
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