Siemens SINUMERIK 840D sl Operating Manual page 74

Setting up the machine
2.4 Settings for the machine
Procedure
Resetting the actual value
NOTICE
Irreversible active zero offset
The current active zero offset is irreversibly deleted by this action.
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1. Select the "JOG" mode in the "Machine" operating area.
2. Press the "Set ZO" softkey.
- OR -
Press the ">>", "REL act. vals" and "Set REL" softkeys to set position
values in the relative coordinate system.
3. Enter the new required position value for Z, X or Y directly in the actual
value display (you can toggle between the axes with the cursor keys)
and press the <INPUT> key to confirm the entries.
- OR -
Press softkey "Z=0", "X=0" or "Y=0" (if there is a Y axis), to set the
required position to zero.
Press the "Delete active ZO" softkey.
The offset is deleted permanently.
Operating Manual, 02/2012, 6FC5398-8CP40-3BA0
Turning