Siemens SINUMERIK 840D sl Function Manual page 807

DB31, ...
DBX101.3
Application example(s)
Special cases, errors, ...
Corresponding to ....
DB31, ...
DBX101.4
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Signal state 0 or edge
change 1 → 0
Signal irrelevant for ...
Corresponding to ....
DB31, ...
DBX101.5
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Gantry warning limit exceeded
When the gantry warning limit is exceeded, the necessary measures (e.g. program interruption
at block end) can be initiated by the PLC user program.
Warning limit monitoring is rendered inactive when the value 0 is input in the following machine
data:
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
Gantry synchronization ready to start
After gantry axis referencing, the monitoring function has detected that the position actual value
deviation between the leading and synchronized axes is greater than the gantry warning limit:
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
It is therefore not possible to start the automatic synchronization compensatory motion of the
gantry axes internally in the control.
The compensatory motion must be started by the user or the PLC user program (IS "Start
gantry synchronization"). The signal is processed for the gantry leading axis only.
After the synchronization compensatory motion has been started by the PLC user program (IS
"Start gantry synchronization" = "1").
Gantry synchronized axis
MD37110 $MA_GANTRY_POS_TOL_WARNING (gantry warning limit)
DB31, ... DBX29.4 (gantry synchronization ready to start)
DB31, ...DBX60.4 and 60.5 (referenced / synchronized 1/2)
Gantry grouping is synchronized
The gantry axis grouping defined with the following machine data is synchronized:
MD37100 $MA_GANTRY_AXIS_TYPE (gantry axis definition)
Any existing misalignment between the leading and synchronized axes (e.g. after start-up of
the machine) is eliminated by gantry axis synchronization (see Section "Start-up of gantry
axes (Page 160)").
The synchronization process is initiated either automatically once the gantry axes have been
referenced or via the PLC user program (IS "Start gantry synchronization").
The compensation values for temperature and sag do not become effective internally in the
control until the gantry grouping is synchronized.
Note:
IS "Gantry grouping is synchronized" is output to the PLC via the PLC interface of the leading
axis.
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Z3: NC/PLC interface signals
25.2 G1: Gantry axes
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