HEIDENHAIN ND 522 - Manual (Page 28)

28 I Operating Instructions
I -
2
Gener
al
Oper
ations
fo
r
ND
522/523
General Operation Key Functions Detailed
This section details the soft key functions that are the same, whether
the ND 522/523 is configured for Mill, or Turn applications.
Set Zero Soft Key
The SET/ZERO soft key is a key that determines the effect of pressing
an Axis key. This key is a toggle key, switching the functionality
between Set, and Zero. The current state is indicated in the Status Bar.
When the state is Set, and the ND 522/523 is in Absolute mode,
selecting an Axis key opens the DATUM form for the selected axis. If
the ND 522/523 is in Incremental mode, a PRESET form opens.
When the state is zero, and the ND 522/523 is in Absolute mode,
selecting an Axis key sets the datum for that axis to zero at the current
position. If it is in Incremental mode, the current incremental value is
set to zero.
Set/Zero Indicator
If the ND 522/523 is in Absolute mode, and the state of
SET/ZERO is zero, pressing any Axis key resets the current
datum to zero at the current location for that axis.