Siemens SINUMERIK 840D sl Function Manual page 297

Input frequency
The handwheel connections can receive handwheel pulses with a maximum input frequency
of 100 kHz.
Velocity
In handwheel travel the following axis velocities, effective during JOG mode, are used:
● SD41110 $SN_JOG_SET_VELO (axis velocity for JOG)
● SD41130 $SN_JOG_ROT_AX_SET_VELO (axis velocity for rotary axes for JOG mode)
● MD32020 $MA_JOG_VELO (conventional axis velocity)
Because of the limited feedrate, the axis is not able to follow the handwheel rotation
synchronously, especially in the case of a large pulse weighting, and therefore overtravels.
Abortion of traversing movement
The traversing movement is aborted by performing a RESET or using the
DB31, ... DBX2.2 (delete distance-to-go/spindle reset)
interface signal.
The setpoint/actual-value difference is deleted.
The traversing movement is only interrupted with STOP.
Any setpoint/actual-value difference is retained.
The distance-to-go is then traversed using START.
Increment-value limitation
The user can limit the size of the increment selected for geometry axes via channel-specific
machine data
MD20620 $MC_HANDWH_GEOAX_MAX_INCR_SIZE
(limitation of handwheel increment for geometry axes).
The size of the selected increments for machine axes can be limited using the following axial
machine data:
MD32080 $MA_HANDWH_MAX_INCR_SIZE (limiting the selected increment)
A traversing movement defined by the handwheel for a geometry axis is defined by:
● Traversing path
● Size of the variable increment
● Geometry-axis assignment
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
(SD41010 $SN_JOG_VAR_INCR_SIZE)
(MD20620 $MC_HANDWH_GEOAX_MAX_INCR_SIZE)
H1: Manual travel and handwheel travel
4.4 Handwheel travel in JOG
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