Siemens SINUMERIK 840D sl Function Manual page 1074

Z2: NC/PLC interface signals
19.11 Positioning axes
DB31, ...
DBX63.0
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Corresponding to ....
DB31, ...
DBX63.1
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Corresponding to ....
DB31, ...
DBX63.2
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
Corresponding to ....
DB31, ...
DBX76.5
Edge evaluation: No
Signal state 1 or edge
change 0 → 1
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AxReset done
Axial reset has been performed
Signal(s) updated: Cyclic
After the axial machine data activated by Reset have become operative, the
IS DB31 ... DBX63.0 ("AXRESET DONE") == 1,
IS DB31, ... DBX63.2 ("Axis stop active") == 0 and
system variable $AA_SNGLAX_STAT == 1 single axis in RESET is reported active.
DB31 ... DBX63.2 ("Axis stop active") == 0
System variable $AA_SNGLAX_STAT == 1
PLC-controlled axis
Axis control passed to PLC
Signal(s) updated: Cyclic
The axis/spindle takeover confirmed by the NCK is transferred with the axis/spindle status by
the
IS DB31, ... DBX63.1 ("PLC-controlled axis") == 1
to the PLC.
The current axis status can be checked with system variable $AA_SNGLAX_STAT.
DB31 ... DBX28.7 (PLC-controlled axis); axis is controlled by PLC.
System variable $AA_SNGLAX_STAT current axis status
AxStop active
Acknowledgement of stopped status
Signal(s) updated: Cyclic
NCK puts the axis/spindle with the
IS DB31, ... DBX63.2 ("Axis stop active") == 0
into the status stopped. All axis motions controlled by the main run are stopped,
Axis status interrupted with system variable $AA_SNGLAX_STAT == 3
DB31 ... DBX28.6 (AXSTOP, Stop); Stop axis/spindle
System variable $AA_SNGLAX_STAT == 3
Positioning axis
NCK treats the axis as a positioning axis
Signal(s) updated: Cyclic
The NCK treats the axis as a positioning axis. By this, it has:
its own axis interpolator (linear interpolator)
•
its own feedrate (F value)
•
its own feedrate override
•
Exact stop (G09) at the progr. end position
•
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions