Siemens SINUMERIK 840D sl Function Manual page 920

Z2: NC/PLC interface signals
19.3 Manual and Handwheel Travel (H1)
DB31, ...
DBB64
Bit 0-2 Handwheel active (1 to 3)
Edge evaluation: no
Signal state 1 or edge These PLC interface signals provide feedback whether the machine axis is assigned to handwheel
change 0 → 1 1, 2, 3 or no handwheel.
Only one handwheel can be assigned to an axis at any one time.
If several interface signals:
DB31, ... DBX4.0 to DBX4.2 (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 edge Neither handwheel 1, 2 nor 3 is assigned to this geometry axis.
change 1 → 0
Corresponding to ... DB31, ... DBX4.0 to DBX4.2 (activate handwheel)
DB10 DBB100.6 ff (handwheel selected)
DB31, ...
DBB64
Bit 5, 4 Plus and minus traversing request
Edge evaluation: no
Signal state 1 or edge A traverse movement of the axis is to be executed in one or the other direction. Depending on the
change 0 → 1 mode selected, the command is triggered in different ways:
● JOG mode:
● REF mode:
● AUT/MDA mode:
Signal state 0 or edge A traversing command in the relevant axis direction has not been given or a traverse movement has
change 1 → 0 been completed.
● JOG mode:
● REF mode:
● AUT/MDA mode:
920
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
With the plus or minus traverse key.
With the traverse key that takes the axis to the reference point.
A program block containing a coordinate value for the axis in question is executed.
The traversing command is reset depending on the current setting "jog or continuous mode" (see
interface signal DB31, ... DBX4.7 or DBX4.6).
While traversing with the handwheel.
When the reference point is reached.
The program block has been executed (and the next block does not contain any coordinate values
for the axis in question).
Cancel by "RESET", etc.
DB21, ... DBX25.7 (axes disable) is active.
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions