Siemens SINUMERIK 840D sl Programming Manual page 120

Measuring variants
2.3 Measure workpiece (milling)
Parameters
G code program
Parameters Description
PL Measuring plane (G17 - G19)
Calibration data set (1 - 12)
Parameters Description
Correction target
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Coordinate system 
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Position Type of corner:
Outside corner
Position of the
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corner
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X0 Setpoint X of the measured corner (X for G17)
Y0 Setpoint Y of the measured corner (X for G17)
Only for coordinate system = "Polar":
XP Position of the pole in the 1st axis of the plane (X for G17)
YP Position of the pole in the 2nd axis of the plane (Y for G17)
α0 Angle between X axis and the 1st edge (for G17)
L1 Distance to the start point of the 1st measurement
L2 Distance to the start point of the 2nd measurement
α1 Opening angle
L3 Distance to the start point of the 3rd measurement
L4 Distance to the start point of the 4th measurement
Only for coordinate system = "Right-angled":
X1 Start point X of the 1st measurement
Y1 Start point Y of the 1st measurement
X2 Start point X of the 2nd measurement
Y2 Start point Y of the 2nd measurement
X3 Start point X of the 3rd measurement
Y3 Start point Y of the 3rd measurement
X4 Start point X of the 4th measurement
Y4 Start point Y of the 4th measurement
120
Unit
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Measuring only (no offset)
Work offset (save measured values in an adjustable WO)
Polar
Right-angled
ShopMill program
Parameters Description
T Name of the probe
D Cutting edge number (1 - 9)
Calibration data set (1 - 12)
X Start point X of the measurement
Y Start point Y of the measurement
Z Start point Z of the measurement
1)
Inside corner
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Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
Unit
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mm
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Unit
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mm
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Degrees
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Degrees
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Measuring cycles