HEIDENHAIN TNC 620 User Manual page 451

MEASURE KINEMATICS (Cycle 451, DIN/ISO: G451, option) 18.4
Number meas. points (3-8) Q423: Number of
probe measurements with which the TNC is to
measure the calibration sphere in the plane. Input
range 3 to 8. Less measuring points increase speed
and more measuring points increase measurement
precision.
Preset (0/1/2/3) Q431: Define whether the TNC
automatically sets the active preset (datum) into the
center of the sphere:
0: Do not set the preset automatically into the
center of the sphere: Preset manually before cycle
start
1: Automatically preset into the center of the sphere
before measurement: Manually preposition the
touch probe above the calibration sphere before the
cycle start
2: Automatically preset into the center of the sphere
after measurement: Preset manually before cycle
start
3: Preset before and after measurement into the
center of the sphere: Preposition the touch probe
manually above the calibration sphere before cycle
start
Backlash, angle range Q432: Here you define
the angle value to be used as traverse for the
measurement of the rotary axis. The traversing
angle must be significantly larger than the actual
backlash of the rotary axes. If input value = 0, the
TNC does not measure the backlash. Input range
-3.0000 to +3.0000
If you have activated "Preset" before the calibration
(Q431 = 1/3), then move the touch probe by the safety
clearance (Q320 + SET_UP) to a position approximately
above the center of the calibration sphere before the
start of the cycle.
TNC 620 | User's Manual Cycle Programming | 3/2014
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