Siemens Sinumerik 840D Operating Turning page 207

Measuring the workpiece zero
5.1 Selecting the function „Measure workpiece zero"
Press the HSK 3 "Meas. workp." to open the "Set
edge" window shown below.
The reference point for programming a workpiece is always the workpiece
zero. To determine this zero point, measure the length of the workpiece
and save the position of the surface of the cylinder's face in the direction Z
in a work offset.
This means that the position is stored in the coarse offset and existing val-
ues in the fine offset are deleted.
The tool must approach the workpiece manually.
Another option is to either use an edge probe or dial gauge with a known
radius and length.
Alternatively an arbitrary tool with known radius and known length can also
be used .
When measuring a workpiece zero manually there are input parameters
that depend on the type of tool used and therefore are only accessible in
this special case.
The measuring tools may not be of the type 3-D probe.
Hint: With all measurements, the feed should be set to
100%.
840D/828D SINUMERIK Operate
Section 5
Notes