Enable/Disable Ref Function - HEIDENHAIN ND 522 - 2-2011 User Manual

ENABLE/DISABLE REF function

The toggling ENABLE/DISABLE soft key, that is present during the
Reference Mark Evaluation routine, allows the operator to select a
specific Reference Mark on an encoder. This is important when using
encoders with Fixed Reference Marks. When the DISABLE REF soft
key is pressed, the evaluation routine is paused, and any reference
marks that are crossed during encoder movement are ignored. When
the ENABLE REF soft key is then pressed, the evaluation routine once
again becomes active, and the next crossed reference mark will be
selected.
Once reference marks for all desired axes are established, press
NO REF soft key to cancel out of routine. Only the axes that are
needed require crossing over the reference marks. If all reference
marks have been found the ND 522/523 will return to the DRO display
screen automatically.
If the reference marks are not crossed over, the ND
522/523 does not store the datum points. This means that
it is not possible to re-establish the relationship between
axis slide positions, and display values after a power
interruption (switch-off).
For everyday power up; turn on power, and press any
key.
Cross over the reference marks (in any order).
- ALTERNATIVE METHOD -
Press DISABLE REF soft key, and cross over
reference marks.
Move encoder to desired fixed reference mark. Press
ENABLE REF soft key, and cross over reference
mark.
- ALTERNATIVE METHOD -
Do not cross over the reference marks, and press the
NO REF soft key. Note: In this case the relationship
between axis slide position, and display value will be
lost after a power interruption.
22 I Operating Instructions