Siemens SINUMERIK 840D sl Function Manual page 1081

19.4.5 Signals to axis/spindle (DB31, ...)
Overview of signals to axis/spindle
DB31, ...
DBB Bit 7
4 Traversing keys
plus
5
13
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)
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Bit 6 Bit 5
Rapid
traverse
minus
override
continu- Variable
ously
INC
Signal(s) updated: Cyclically
Signals to axis/spindle
Bit 4 Bit 3
Traverse Feed stop
keys
Spindle
disable
stop
Machine function
10000 1000
INC INC
NC/PLC Interface Signals (Z2)
Manual and handwheel travel
Bit 2 Bit 1
Activate handwheel
3 2
100 10
INC INC
JOG - Approaching fixed point
Bit 0
1
1
INC
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