Siemens SINUMERIK 840D sl Operating Manual page 79

Procedure
...
These value changes are available in the part program immediately or after "Reset".
Universal
Operating Manual, 01/2015, 6FC5398-6AP40-5BA2
1. Select the "Parameter" operating area.
2. Press the "Zero offset" softkey.
3. Press the "Active", "Base" or "G54...G599" softkey.
The corresponding window opens.
4. Place the cursor on the desired zero offset to view its details.
5. Press the "Details" softkey.
A window opens, depending on the selected zero offset, e.g. "Zero Off-
set - Details: G54 to G599".
6. You can edit the values directly in the table.
- OR -
Press the "Clear offset" softkey to reset all entered values.
Press the "ZO +" or "ZO -" softkey to select the next or previous offset,
respectively, within the selected area ("Active", "Base", "G54 to G599")
without first having to switch to the overview window.
If you have reached the end of the range (e.g. G599), you will switch
automatically to the beginning of the range (e.g. G54).
Machine manufacturer
Please refer to the machine manufacturer's specifications.
Press the "Back" softkey to close the window.
Setting up the machine
3.5 Zero offsets
79