Siemens SINUMERIK 802D sl - Page 318

Reference Point Approach (R1)
18.2 Referencing with incremental measuring systems
Turning, Milling, Nibbling
318 Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Characteristics of traversing to the reference point cam (phase 1)
● The feedrate override and feedrate stop is in effect.
● The machine axis can be stopped/started.
● The cam must be reached within the traversing distance in MD34030
REFP_MAX_CAM_DIST, otherwise a corresponding alarm is triggered.
● The machine axis must come to a halt at the cam, otherwise a corresponding alarm is
triggered.
Characteristics when synchronizing with the zero pulse (phase 2)
● Feedrate override is not active. Feedrate override 100% is active. Termination occurs at
feedrate override 0%.
● Feedrate stop is active, the axis comes to a halt and a corresponding alarm is displayed.
● The machine axis cannot be stopped and restarted with NC stop/NC start.
● Monitoring of the zero mark is active with MD34060 REFP_MAX_MARKER_DIST.
Characteristics of traversing to the reference point (phase 3)
● The feedrate override and feedrate stop is in effect.
● The machine axis can be stopped and re-started with NC stop/NC start.
● If reference point offset is smaller than the braking distance of the machine axis from the
reference point positioning velocity to stop, the reference point is approached from the
opposite direction.
Different motion sequences during referencing:
Referencing type Synchronizing pulse
(zero mark, BERO)
Motion sequence
With reference cam (MD34000
REFP_CAM_IS_ACTIVE = 1)
Synchronizing pulse before cam, reference
coordinate before synchronizing pulse =
without reversal:
(MD34050
REFP_SEARCH_MARKER_REVERSE = 0)
5
.
9
3
9
0
9
&
5
9
6WDUW
6\QFKURQL]LQJSXOVH
2XWSXWFDP