H1: Manual and handwheel travel
3.4 Handwheel travel in JOG
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
169
Supplementary conditions
NC stop
With NC stop present, no travel 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 behavior
corresponds to that of handwheel travel.
3.4.4 Double use of the handwheel
Alarm 14320
The double use of a handwheel for DRF and velocity or distance overlay, including contour
handwheel, is suppressed and is displayed using the self-clearing alarm 14320 (Handwheel
%1 used twice (%2) in channel %3 axis %4), if, different influences can act on an axis as a
result of the handwheel.
This means that an overlaid movement can only be executed when no DRF offset (triggered
by the same handwheel) is active for the axes in the basic coordinate system that are
involved in the movement, i.e., the DRF movement must have been terminated.
If an overlaid movement has been started, no DRF offset can be started for any of the axes
involved that are supplied by the same handwheel. Such a DRF movement is only possible
when the movement with overlay has reached its end point or has been aborted by delete
distance-to-go or RESET.
If the handwheel override and DRF offset are to be active simultaneously, this is possible
with activation of two separate handwheels.
Example: Path override
Assumption:
Channel 1 and geometry axis X correspond to machine axis 3 and geometry axis Y
corresponds to machine axis 5 and handwheel 2 is selected for the first geometry axis.
If block
X10 Y10 FD=0 is processed in the main run, neither machine axis 3 nor machine
axis 5 can be traversed with DRF via handwheel 2. If handwheel 2 is assigned to machine
axis 3 while the channel-specific DRF signal is active, then alarm 14320 (Handwheel 2 used
twice (8) in channel 1 axis X) is signaled.
If machine axis 3 or machine axis 5 is traversed with DRF using the 2nd handwheel, then
motion
X10 Y10 FD=0 cannot be executed and alarm 14320 (handwheel 2 used twice (3) in
channel 1 axis X) or alarm 14320 (handwheel 2 used twice (3) in channel 1 axis Y) is
signaled.
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