Siemens SIMATIC S5 Manual page 88

Machine Data, Modes and Traversing Programs
Example: Using a zero offset (ZO)
0 10 20 30
10 10
1st ZO
20
50
2nd ZO
3rd ZO
Zero offset (ZO)
A zero offset makes it possible to match the coordinate basic origin to different
conditions.
You must enter four values ("0" is also allowed) in the machine data for zero
offsets 1 to 4. These values need not be identical. Entries not within the traversing
range are reported with an error message.
5-16
40 50 60 70
10
20
90
Figure 5-8. Using a Zero Offset
80 90 100 110 120
10
20
EWA 4NEB 812 6057-02
IP 266
mm