Siemens SINUMERIK 840D sl Function Manual page 300

Manual and Handwheel Travel (H1)
4.5 Handwheel override in automatic mode
For example, the axis traverses by 0.001 mm per handwheel detent position if machine
function INC1 and the default setting of the above machine data are selected.
In the case of velocity override, the velocity results from the traverse path covered using the
handwheel within a certain period of time.
Example
Assumptions:
The user rotates the handwheel at 100 pulses/second.
The selected machine function is INC100.
The default setting is made for the above machine data for handwheel weighting.
⇒ Handwheel traverse path per second:
⇒ Velocity override:
PLC interface signals
As soon as the handwheel override takes effect, the following interface signals to the PLC
are set to signal 1:
● For positioning axes:
● For concurrent positioning axes:
● For path axes:
For the path default, depending on the traversing direction, the corresponding
DB31, ... DBX64.6 and 64.7 (motion commands +/-)
interface signals are output to the PLC.
Limitations
The axial limitations (software limit switch, hardware limit switch, working-area limitation) are
effective in conjunction with handwheel override. With path default, the axis can be traversed
with the handwheel in the programmed traversing direction only as far as the programmed
target position.
The resulting velocity is limited by the axial machine data:
MD32000 $MA_MAX_AX_VELO(maximum axis velocity)
300
DB31, ... DBX62.1 (handwheel override active)
DB31, ... DBX62.1 (handwheel override active)
DB21, ... DBX33.3 (handwheel override active)
10 mm
0.6 m/min
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions