Siemens SINUMERIK 840D sl Function Manual page 277

Velocity
The velocity for a JOG traversing movement is determined by the following value settings
depending on the feedrate mode:
● With active linear feedrate (G94)
● With active revolutional feedrate (G95)
The default setting for feedrate velocity is mm/min or rpm for revolutional feedrate or rotary
axes.
Rapid traverse override
If the rapid-traverse-override key is pressed at the same time as the traversing keys, the
movement is executed at the rapid-traverse velocity set in the axis-specific machine data (or
MD32040 $MA_JOG_REV_VELO_RAPID for revolutional feedrate):
MD32010 $MA_JOG_VELO_RAPID (rapid traverse in jog mode)
Feedrate override
The JOG velocity can also be influenced by the axial feedrate override switch provided that
interface signal
DB31, ... DBX1.7 (axial feedrate override active) is active.
Percentages are assigned to the individual feedrate-override switch positions via machine
data. For a switch position of 0% the axis is not traversed, provided that 0 is entered in the
associated machine data.
Interface signal
DB31, ... DBX1.7 (axial feedrate override active)
has no meaning at switch position 0%.
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
(SD41100 $SN_JOG_REV_IS_ACTIVE (JOG: revolutional/linear feedrate) = 0):
– With general setting data
SD41110 $SN_JOG_SET_VELO (axis velocity in JOG)
or, for rotary axes, with general setting data
SD41130 $SN_JOG_ROT_AX_SET_VELO
(JOG velocity for rotary axes)
or
– With axial machine data
MD32020 $MA_JOG_VELO (JOG axis velocity),
only if SD41110 = 0.
(SD41100 $SN_JOG_REV_IS_ACTIVE = 1):
– With general setting data
SD41120 $SN_JOG_REV_SET_VELO
(revolutional feedrate of axes in JOG)
or
– With axial machine data
MD32050 $MD_JOG_REV_VELO (revolutional feedrate in JOG),
only if SD41120 = 0.
Manual and Handwheel Travel (H1)
4.1 Product brief
277