Siemens SIMATIC S5 Manual page 155

IP 266
• G53: Cancel zero offsets
G54-G57: Enable offset 1-4
These functions effect a relative shift in the axis's coordinate system. Such a
shift may be required when it is necessary to perform identical steps with the
same incremental dimensions at different positions (see Example).
Example: Using a zero offset
Only one zero offset may be invoked at any given time. A zero offset enabled
via G54 remains in force only until another G function (G54 - G57) is invoked.
0 10 20 30
10 10
1st ZO
20
50
2nd ZO
3rd ZO
The workpiece is to be drilled at the points indicated.
The three drill holes in each group are the same distance apart. The machining
sequence for the groups can be programmed in a subroutine.
Zero offsets and positioning operations are used to set the start position for the
subsequent subroutine-controlled positioning of the drill.
EWA 4NEB 812 6057-02
Machine Data, Modes and Traversing Programs
40 50 60 70
10
20
90
Figure 5-31. Using Zero Offsets
80 90 100 110 120
10
20
mm
5-83