798 HEIDENHAIN Technical Manual MANUALplus 620
MP_refType
Sequence for finding the reference mark
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: None
No traversing of the reference marks
If the reference run with the spindle is performed via a trip dog, 
this value must be set.
Switch, changing Dir
For linear axes with speed encoder; reference run with NC start
Switch, no changing Dir
For linear axes with speed encoder; reference run with NC start
without Switch
For spindle, rotary table with angle encoder; reference run with 
NC start
distance coded
For distance-coded linear encoders; reference run with NC start
distance coded + on the fly
For distance-coded linear encoders; reference run with axis-
direction keys or NC start
without switch + on the fly
For spindle; reference run with M3, M4
Endat Encoder
For axes with EnDat encoder; reference-mark traverse not 
necessary
Default: Switch, changing Dir
Access: LEVEL3
Reaction: REF