Siemens SINUMERIK 840D sl Programming Manual page 164

Measuring variants
3.3 Measure workpiece (milling)
Measuring principle
Two opposite points in each of the two geometry axes of the plane are measured. The
measurements start in the positive direction of the 1st geometry axis. From the four measured
actual positions of the pocket sides, the pocket width and the pocket length are calculated,
taking into account the calibration values. The position of the pocket center as workpiece zero
is determined corresponding to the work offset selected to be corrected. The measuring
differences of the side lengths are used as the basic quantity for a tool offset, the position of
the pocket zero point as basis for the work offset.
With the selection Setpoint center point "YES", the position of the rectangular pocket center
can be defined as workpiece zero through setpoint specifications.
Measure: Rectangular pocket (CYCLE977)
Requirements
● The probe must be active as tool.
● Tool type of the probe:
– 3D multi probe (type 710)
– Mono probe (type 712)
– Star-type probe (type 714)
Note
The following measuring methods are only possible in the axes of the plane:
● 3D probe with spindle reversal (differential measurement)
● Align 3D probe
The probe types 712, 713 and 714 generally cannot be used for these measuring methods.
164
Measure: Rectangular pocket with protection
zone (CYCLE977)
Programming Manual, 12/2017, 6FC5398-4BP40-6BA1
Measuring cycles