Siemens Sinumerik 840DiE sl - Page 356

01/2007
11.5 Axes and spindles
11-356
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
The following machine data and interface signals are independent with re-
spect to the individual phases of reference point approach:
S MD11300: JOG_INC_MODE_LEVELTRIGGRD (INC/REF in jog mode)
S MD34000: REFP_CAM_IS_ACTIVE (axis with reference cam)
S MD34110: REFP_CYCLE_NR (axis sequence for channel–specific refer-
ence point approach)
S MD30240: ENC_TYPE (encoder type)
S MD34200: ENC_REFP_MODE (referencing mode)
S IS: DB21, ... DBX1.0 (”Activate referencing”)
S IS: DB21, ... DBX33.0 (”Referencing active”)
The following machine data and interface signals are important:
S MD34010: REFP_CAM_DIR_IS_MINUS (approach reference cam in nega-
tive direction)
S MD34020: REFP_VELO_SEARCH_CAM (reference cam approach velocity)
S MD34030: REFP_MAX_CAM_DIST (maximum distance to reference cam)
S MD34092: REFP_CAM_SHIFT (electr. cam offset, incremental measuring
systems with equidistant zero markers)
S IS: DB21, ... DBX36.2 (”all axes with obligatory reference point are refer-
enced”)
S IS: DB31, ... DBX4.7/DBX4.6 (”Traversing keys plus/minus”)
S IS: DB31, ... DBX12.7 (”Reference point approach delay”)
S IS: DB31, ... DBX60.4, DBX60.5 (”Referenced/synchronized 1, 2”)
Properties of phase 1:
S The feed rate override (feed rate switch) is active.
S The feed stop (channel–specific and axis–specific) is active.
S The machine axis can be stopped and restarted with NC–Stop/NC–Start.
S If the machine axis traverses a distance defined in
– MD34030: REFP_MAX_CAM_DIST (max. distance to the
reference cam)
without reaching the reference cam
– IS: DB31, ... DBX12.7 (”Reference point approach delayed”) = 0
the axis stops, and
– alarm 20000 ”Reference cam not reached”
is output.
Phase–independent
data
Phase 1:
Traversing to the
reference cam
11 NCK Commissionin
g
with HMI Advanced