Double Use Of The Handwheel - Siemens SINUMERIK 840D sl Function Manual

Reference point approach
In phase 1 of the machine-axis reference point approach, the DRF offset for the corresponding
geometry or auxiliary axis is deleted.
During the machine-axis reference point approach, a DRF offset for the corresponding
geometry or auxiliary axis cannot be performed simultaneously.
Reset response
PowerOn-Reset: The DRF offset is deleted.
4.13.4

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.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
H1: Manual and handwheel travel
4.13 Use of handwheels in automatic mode
229