Siemens sinumerik 840D sl Function Manual page 171

• Start referencing again for axis 1 (master axis) with the modified machine data
• Wait until message "10654 Channel 1 Waiting for synchronization start" appears
• At this point in time, the NCK has prepared axis 1 for synchronization and registers this to
• Examine actual positions of machine. Case A or B might apply:
Figure 4-1
If Case A applies, the synchronization process can be started immediately. See step "Start
synchronization". If Case B applies, the offset "diff" must be calculated and taken into
account:
• Measuring of diff
• By using two appropriate, right-angled reference points R' and R" in the machine bed
• Start gantry synchronization. PLC sets:
Special functions: Gantry Axes (G1)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
the interface signal:
DB31, ... DBB101(gantry)
Possible results after referencing of axis 1 (master axis)
(right in picture), the difference in position in JOG can be traversed. The diff offset can
then be read as the difference in the position display. The diff offset must be entered in
the machine data of axis 3 (synchronized axis):
MD34100 $MA_REFP_SET_POS
Continue with Step 1 (see above).
DB31, ... DBX29.4 = 1 (start synchronization of gantry)
Example
4.3 Commencing start-up
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