Siemens SINUMERIK 840D sl Operating Manual page 107

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Rectangular
spigot
1 spigot
2 spigots
3 spigots
4 spigots
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
After the measurement has been successfully completed, P2, P3 and
P4 are stored and the softkeys "P2 stored", "P3 stored", and "P4 stored"
become active.
6. Press the or "Calculate" or "Set ZO"softkey.
The length, width, and center point of the rectangular spigot are
calculated and displayed.
For "Set ZO", the setpoint position of the center point is stored as new
zero point. The tool radius is automatically included in the calculation.
The diameter and center point of the spigot are calculated and
displayed.
For "Set ZO", the setpoint position of the center point is stored as new
zero point. The tool radius is automatically included in the calculation.
The angle between the line connecting the center points and the
reference axis is calculated and displayed.
For "Set ZO", the center point of the first spigot now corresponds to the
position setpoint. The calculated rotation is stored in the zero offset.
The center point and the diameter of the circle on which the three spigot
center points lie are calculated and displayed. If you selected entry
"Yes" in "Coor. rotation", then angle α is additionally calculated and
displayed.
For "Set ZO", the center point of the circle now corresponds to the
position setpoint. The calculated rotation is stored in the zero offset.
The spigot center points are connected diagonally and the intersection
point of the two connecting lines calculated and displayed. If you
selected entry "Yes" in "Coor. rotation", then angle α is additionally
calculated and displayed.
For "Set ZO", the intersection point now corresponds to the position
setpoint. The calculated rotation is stored in the zero offset.
Setting up the machine
2.6 Measuring the workpiece zero
107