Fagor 8025 GP, Operating Manual

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8025/8030 CNC PROGRAMMING MANUAL 171
3. G00 move of the Z axis to the reference plane Z-10. The spindle goes into closed
loop.
If it is the first tap (that is, the spindle goes from open to closed loop) and if parameter
"P625(1)=1" for the start of the thread to be synchronized with the spindle marker
pulse (Io), the CNC will home the spindle.
On the rest of the taps, as long as neither G80, M02, M03, M4 nor M30 functions are
executed, the CNC will not reference (home) the spindle.
4. Tap-in movement along the Z axis down to Z-110. The spindle is interpolated (G01)
with the Z axis at F1000.
5. Dwell at the bottom of the thread.
The CNC executes an M4 and the spindle starts turning in the opposite direction.
6. Tap-out movement. The Z axis returns to the reference plane Z-10. The spindle is
interpolated (G01) with the Z axis at F1000.
7. The CNC executes an M03 and the spindle recovers its turning direction.
Rapid move (G00) to the starting plane (G98).
8. The X and Y axes move in G00 up to the next tapping position X20 Y20.
9. Same as point 3; but, without homing the spindle.
10. Same as point 4.
11. Same as point 5.
12. Same as point 6.
13. Same as point 7.
When executing function G80, the spindle goes into open loop turning at 500 rpm.
Also, the spindle goes into open loop whenever an M02, M03, M04 or M30 is executed
or when a RESET is pressed or an error situation occurs.