Siemens SINUMERIK 840D sl Function Manual page 304
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Manual and Handwheel Travel (H1)
Handwheel travel in JOG
With velocity specification
If the handwheel is no longer moved with velocity specification
(MD11346 $MN_HANDWH_TRUE_DISTANCE == 0 or == 2),
the "travel request" PLC signal is reset.
The "travel request" PLC signal is also reset when the handwheel is deselected.
Figure 4-5
Supplementary conditions
With NC Stop present, no motion command and, therefore, no travel request is output. There
is an exception with DRF travel:
If DRF travel is permitted in the NC-Stop state via machine data
MD20624 $MC_HANDWH_CHAN_STOP_COND (bit 13 == 1),
the response corresponds to that of handwheel travel.
As for the motion command, the travel request is the sum of all the sub-movements, i.e. the
component from couplings and offset values is also taken into account.
304
Signal/timing diagram, handwheel travel with velocity specification when stop condition is
abort criterion
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
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