Phase 1: Traversing To The Reference Cam - Siemens SINUMERIK 828D Function Manual

R1: Reference point approach
15.5 Referencing with incremental measurement systems
15.5.3

Phase 1: Traversing to the reference cam

Phase 1: Graphic representation
Figure 15-3 Phase 1: Traversing to the reference cam
Phase 1: Start
For information on starting reference point approach, refer to "Axis-specific referencing" and "Channel-specific
referencing."
Phase 1: Sequence
In phase 1, depending on the position of the machine axis with reference to the homing cam, we distinguish
between three cases:
1. The machine axis is positioned before the reference cam
2. The machine axis is positioned on the reference cam
3. The machine axis has no reference cam
Case 1: The machine axis is positioned before the reference cam
After the start of reference point approach, the machine axis is accelerated in the parameterized direction and to
the parameterized reference point approach velocity :
MD34010 $MA_REFP_CAM_DIR_IS_MINUS (Reference point approach in minus direction)
Basic Functions
1208
Function Manual, 09/2011, 6FC5397-0BP40-2BA0