Siemens SINUMERIK 840D sl Function Manual page 1053

Description of signals to axis/spindle
DB31, ...
DBB4
Bit 0-2 Activate handwheel (1 to 3)
Edge evaluation: No
Signal state 1 or This PLC interface signal defines whether this machine axis is assigned to handwheel 1, 2, 3 or no
edge change 0 → 1 handwheel.
Only one handwheel can be assigned to an axis at any one time.
If several interface signals:
DB31, ... DBX4.0, 4.1, 4.2 (Activate handwheel)
are set, priority "Handwheel 1" before "Handwheel 2" before "Handwheel 3" applies.
If the assignment is active, the machine axis can be traversed with the handwheel in JOG mode or
a DRF offset can be generated in AUTOMATIC or MDA mode.
Signal state 0 or Neither handwheel 1, 2 nor 3 is assigned to this geometry axis.
edge change 1 → 0
Application The PLC user program can use this interface signal to disable the influence of turning the
example(s) handwheel on the axis.
Corresponding to .... DB31, ... DBX64.0 to DBX64.2 (Handwheel active)
DB31, ...
DBX4.4 Traverse key disable
Edge evaluation: No
Signal state 1 or The traverse keys plus and minus have no effect on the machine axes in question. It is thus not
edge change 0 → 1 possible to traverse the machine axis in JOG with the traverse keys on the machine control panel.
If the traverse key disable is activated during a traverse movement, the machine axis is stopped.
Signal state 0 or The plus and minus traverse keys are enabled.
edge change 1 → 0
Application It is thus possible, depending on the operating mode, to disable manual traverse of the machine
example(s) axis in JOG mode with the traverse keys from the PLC user program.
Corresponding to .... DB31, ... DBX4.7 and/or DBX4.6 (traversing key plus and traversing key minus)
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Z2: NC/PLC interface signals
19.4 Manual and handwheel travel
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