468 Touch Probe Cycles: Automatic Kinematics Measurement
18.4 MEASURE KINEMATICS (Cycle 451, DIN/ISO: G451; Option)
Positioning direction
The positioning direction of the rotary axis to be measured is
determined from the start angle and the end angle that you define in
the cycle. A reference measurement is automatically performed at 0°.
The TNC will issue an error message if the selected start angle, end
angle and number of measuring points result in a measuring position
of 0°.
Specify the start and end angles to ensure that the same position is
not measured twice. As mentioned above, a duplicated point
measurement (e.g. measuring positions +90° and -270°) is not
advisable, however it does not cause an error message.
 Example: start angle = +90°, end angle = –90°
 Start angle = +90°
 End angle = –90°
îš„ No. of measuring points = 4
 Stepping angle resulting from the calculation = (–90 - +90) / (4-1)
= –60°
 Measuring point 1= +90°
 Measuring point 2= +30°
 Measuring point 3= -30°
 Measuring point 4= –90°
 Example: start angle = +90°, end angle = +270°
 Start angle = +90°
 End angle = +270°
îš„ No. of measuring points = 4
îš„ Stepping angle resulting from the calculation = (270 - 90) / (4-1)
= +60°
 Measuring point 1= +90°
 Measuring point 2= +150°
 Measuring point 3= +210°
 Measuring point 4= +270°
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