Phase 2: Travel To Fixed Stop - Siemens SINUMERIK 828D Function Manual

R1: Reference point approach
15.6 Referencing with distance­coded reference marks
Abort criterion
If the parameterized number of reference marks is not detected within the parameterized distance, the machine
axis is stopped and reference point traversing is aborted.
MD34060 $MA_REFP_MAX_ MARKER_DIST (max. distance to the reference mark)
Features of phase 1
After phase 1 is successfully completed, the actual value system of the machine axis is synchronized.
15.6.5

Phase 2: Travel to fixed stop

Phase 2: Start
Phase 2 is automatically started when phase 1 has been completed without an alarm.
Initial situation:
• The machine axis is positioned directly behind the last of the parameterized number of reference marks.
• The actual value system of the machine axis is synchronized.
Phase 2: Sequence
In Phase 2, the machine axis completes reference point approach by traversing to a defined target position
(reference point). This action can be suppressed in order to shorten the reference point approach:
MD34330 $MA_STOP_AT_ABS_MARKER
Value Meaning
0 Travel to target position
1 No travel to target position
Travel to target position (normal case)
The machine axis accelerates to the parameterized reference point position velocity and travels to the
parameterized target point (reference point):
MD34070 $MA_REFP_VELO_POS (Reference point positioning velocity)
MD34100 $MA_REFP_SET_POS (reference point value)
The machine axis is referenced. To identify this, the NC sets an interface signal for the measuring system that is
currently active:
DB31, ... DBX60.4 / 60.5 (Referenced/Synchronized 1/2) = 1
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions