Siemens SINUMERIK 840D sl Function Manual page 824

Positioning Axes (P2)
Control by the PLC
PLC actions
Trigger axial RESET
IS DB31, ... DBX28.1 ("AXRESET")
Start machine axis 1 as PLC axis via
FC 18
Cancel servo enable for machine axis 1
IS DB31, ... DBX2.1==0 ("servo enable")
Trigger axial RESUME
IS DB31, ... DBX28.2 ("AXRESUME")
Set servo enable for machine axis 1
IS DB31, ... DBX2.1==1 ("servo enable")
Trigger axial RESET
IS DB31, ... DBX28.1 ("AXRESET")
PLC releases control of machine axis 1 to the
NCK. IS DB31, ... DBX28.7==0
("PLC controls axis")
824
NCK reaction
Machine axis 1 is stopped and the traversing
movement is aborted.
IS DB31, ... DBX63.2==1 ("axis stop active") is
reset to 0, its axial machine data are read in,
IS DB31, ... DBX63.0 ("AXRESET DONE") is set
to 1 and IS DB31, ... DBX63.2 ("axis stop active")
is reset to 0.
IS DB31, ... DBX63.0==0
("AXRESET DONE")
Axial alarm 21612
"Axis %1 measuring system change" is signaled.
Axial alarm 21612 ("Axis %1 measuring system
change") is canceled and motion command IS
DB21, ... DBX40.7 ("Motion command plus") is
output. But machine axis 1 does not start to
traverse due to a missing servo enable.
Machine axis 1 traverses to the programmed end
point.
Machine axis 1 is stopped and traversal aborted,
its axial machine data are read in and the end of
axial RESET IS DB31, ... DBX63.0==0
("AXRESET DONE") is signaled.
NCK accepts control of the machine axis IS
DB31, ... DBX63.1==0 ("PLC controls axis") and
resets the end signal of axial RESET IS DB31, ...
DBX63.0
("AXRESET DONE") from 1 to 0.
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions