Siemens SINUMERIK 840Di sl Commissioning Manual page 435

Phase-independent data
The following machine data and interface signals are independent with respect to the
individual phases of reference point approach:
● MD11300 $MN_JOG_INC_MODE_LEVELTRIGGRD (INC/REF in jog mode)
● MD34000 $MA_REFP_CAM_IS_ACTIVE (axis with reference cam)
● MD34110 $MA_REFP_CYCLE_NR (axis sequence for channel-specific reference point
● MD30240 $MA_ENC_TYPE (encoder type)
● MD34200 $MA_ENC_REFP_MODE (referencing mode)
● MD34310 $MA_ENC_MARKER_INC (interval between two reference marks)
● MD34320 $MA_ENC_INVERS (inverse measuring system)
● IS DB21, ... DBX1.0 ("Activate referencing")
● IS DB21, ... DBX33.0 ("Activate referencing")
Phase 1: Synchronize by overriding 2 reference marks
The following machine data and interface signals are relevant:
● MD34010 $MA_REFP_CAM_DIR_IS_MINUS (approach reference cam in minus direction)
● MD34040 $MA_REFP_VELO_SEARCH_MARKER (referencing velocity)
● MD34060 $MA_REFP_MAX_MARKER_DIST (maximum distance between 2 reference
● MD34300 $MA_ENC_REFP_MARKER_DIST (Reference mark distance)
● IS DB21, ... 30, DBX36.2 ("All axes to be referenced are referenced")
● IS DB31, ... DBX4.7/DBX4.6 ("Traversing keys plus/minus")
● IS DB31, ... DBX12.7 ("Reference point approach delay")
● IS DB31, ... DBX60.4, DBX60.5 ("Referenced/synchronized 1, 2")
Properties of phase 1:
● If the machine axis travels a distance defined in MD34300 $MA_REFP_MARKER_DIST
Phase 2: Traversing to the target point
The following machine data and interface signals are relevant:
● MD34070 $MA_REFP_VELO_POS (end point positioning velocity)
● MD34090 $MA_REFP_MOVE_DIST_CORR (absolute offset)
● MD34100 $MA_REFP_SET_POS (target point)
● MD34330 $MA_REFP_STOP_AT_ABS_MARKER (with/without target point)
● IS DB31, ... DBX60.4, DBX60.5 ("Referenced/synchronized 1, 2")
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
approach)
marks)
(max. distance from reference point) from the starting point without overriding two
reference marks, then the machine axis stops and Alarm 20004 "Reference Mark is
missing" is output.
NC Commissioning with HMI Advanced
11.5 Axes and spindles
435