Siemens SINUMERIK 828D

R1: Reference point approach
15.6 Referencing with distancecoded reference marks
Basic Functions
1224 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
15.6.3 Chronological sequence
Chronological sequence
Referencing with distance-coded reference marks can be divided into two phases:
• Phase 1: Travel across the reference marks with synchronization
• Phase 2: Traveling to a fixed destination point
Figure 15-13 Distancecoded reference marks
15.6.4 Phase 1: Travel across the reference marks with synchronization
Phase 1: Start
For information on starting reference point approach, refer to "Axis-specific referencing" and "Channel-specific
referencing."
reference cam
In measuring systems with distance-coded reference marks, reference cams are not required for the actual
referencing action. For functional reasons, however, a reference cam is required for channel-specific reference
point approach and reference point approach from the part program (G74) before the traversing range end of the
machine axis.
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