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Reference-Point Approach
Sequence of
motions
z
Synchronization with pulse
z
Approach to reference point
The following Table shows the individual sequence of motions for referencing
with/without reference-point cam.
Referencing Method
Synchr. Pulse
with reference-point Synchronous pulse ahead of
cam
cam, reference-point
coordinate ahead of synchr.
pulse
Sequence of Motions
Synchronous pulse on cam,
reference-point coordinate after
synchr. pulse, on cam = with
reversal
without reference cam Reference
coordinate
after synchr. pulse
VC
VM
VP
RV
RK
–
–
–
–
–
Reference-point approach velocity (MD: REFP_VELO_SEARCH_CAM)
Reference-point cut-off speed (MD: REFP_VELO_SEARCH_MARKER)
Reference-point approach velocity (MD: REFP_VELO_POS)
Reference-point offset (MD: REFP_MOVE_DIST + REFP_MOVE_DIST_CORR)
Reference-point coordinate (MD: REFP_SET_POS[0] )
with reversal – MD: REFP_SEARCH_MARKER_REVERS =1
BERO signal
For stepper motor axes only:
The respective actual value is stored when the selected edge of the BERO
signals is received.
In order to achieve a good repeatability of the reference point, the search
speed for the BERO edge may not exceed a certain maximum value, which
depends on the BERO type.
SINUMERIK 802S/C base line
Description of Functions
8-5