HEIDENHAIN ND 522 - Manual (Page 21)

ND 522/523 21
I - 2 Gener
al Oper
ations f
o
r ND
522/523
Power Up
Switch on the power (located on the back). The initial
screen will appear. This screen will only appear the
very first time the unit is powered up. The following
steps may have already been completed by the
installer.
 Select the proper language by pressing the
LANGUAGE soft key.
 Choose the application of either MILL, or TURN.
The APPLIC. [MILL/TURN] soft key toggles
between these two settings.
 Next select the number of axes required. When
complete press the Enter hard key.
If necessary, the application can be changed later in
“Installation Setup” under “Counter Settings”.
The ND 522/523 is now ready for operation, and is in the operating
mode Absolute. Each active axis will have a flashing “REF” sign next
to it. At this point the reference mark evaluation should be completed.
Reference Mark Evaluation
The ND 522/523's reference mark evaluation feature automatically re-
establishes the relationship between axis slide positions, and display
values that were last defined by setting the datum.
If the axis encoder has reference marks, the “REF” indicator will flash.
. After crossing over the reference marks, the indicator will stop
flashing, and change to non-flashing REF.
Working without reference mark evaluation
The ND 522/523 can be used without crossing over the reference
marks. Press the NO REF soft key to exit the reference mark
evaluation routine, and continue.
Reference marks can be crossed over at a later time, if it becomes
necessary to define datums that can be re-established after a power
interruption. Press the ENABLE REF soft key to activate the reference
mark evaluation routine.
If an encoder is setup without reference marks, then the
REF indicator will not be displayed, and datums will be lost
once power is turned off.