Siemens SINUMERIK 840D sl Programming Manual page 115

Starting position before the measurement
The probe is at the measuring height or above the corner (see protection zone) compared to
the corner to be measured or in front of the 1st measuring point.
The measuring points must be able to be approached from here collision-free.
The measuring points are derived from the programmed distances L1 to L3 and the pole
position (XP, YP). When positioning, α0 (angle between the X axis and 1st edge in the
machine coordinate system) is also taken into account.
The measuring cycle generates the required traversing blocks and performs the
measurements at the measuring points P1 to P3, starting with P1.
Positioning measuring points P1 to P3 taking into account a protection zone
● Protection zone = no
● Protection zone = yes
Position after the end of the measuring cycle
The probe is at the starting position again (opposite the measured corner).
Depending on the protection zone parameter yes/no, the probe is at the measuring height or
above the corner.
Procedure
The part program or ShopMill program to be processed has been created and you are in the
editor.
Measuring cycles
Programming Manual, 02/2011, 6FC5398-4BP40-0BA0
The probe is pre-positioned at the measuring height and remains at this measuring height
when measuring the corner. An outer corner is traversed around.
The probe is pre-positioned above the corner. When measuring, the 3rd axis of the plane
(Z for G17) is moved by the value in parameter DZ to the measuring height and the
corresponding measuring point is measured. After the measurement, the probe is raised
by the value of parameter DZ and moves to the next measuring point, where it is lowered
again.
Figure 2-13 Protection zone = yes Traversing around the outer corner with DZ>0
(measuring height + DZ) for G17
1. Press the "Meas. workpiece" softkey.
2. Press the "Corner" softkey.
3. Press the "Right-angled corner" softkey.
The input window "Measure: Right-angled corner" is opened.
Measuring variants
2.3 Measure workpiece (milling)
115