Siemens SINUMERIK 840Di sl Commissioning Manual page 434

NC Commissioning with HMI Advanced
11.5 Axes and spindles
Phase 3: Approach reference point
The following machine data and interface signals are relevant:
● MD34070 $MA_REFP_VELO_POS (reference point positioning velocity)
● MD34080 $MA_REFP_MOVE_DIST (reference point distance to zero mark)
● MD34090 $MA_REFP_MOVE_DIST_CORR (reference point offset, additive)
● MD34100 $MA_REFP_SET_POS (reference point value)
● IS DB31, ... DBX2.4, 2.5, 2.6, 2.7 ("Reference point value 1...4")
● IS DB31, ... DBX60.4, DBX60.5 ("Referenced/synchronized 1, 2")
Properties of phase 3:
● Feed override (the feed override switch) is active.
● Feed stop (channel-specific and axis-specific) is active.
● NC-Stop/NC start is active.
References:
/FB1/ Function Manual, Basic Functions, R1 Reference point travel, Chapter "Referencing
with incremental measuring systems"
Distancecoded reference marks
When clearance-coded reference marks are used, referencing is divided into 2 phases:
1. Synchronize by overriding 2 reference marks
2. Traverse to target point
Figure 11-24 Signal chart: Distance-coded reference marks (principle)
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Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Manual