Siemens SINUMERIK 840D sl Function Manual page 313

Example 3
Activate velocity override
N10 G01 X10 Y100 Z200 FD=1500 . . .
X10 Y100 Z200
FD=1500
Concurrent positioning axis
The handwheel override for concurrent positioning axes is activated from the PLC via FC15
by setting the appropriate interface signal
DB31, ... DBX62.1 (handwheel override ON).
If the velocity parameter (F_value) is transferred with a value of 0, the activated handwheel
override acts as a path default (i.e. in this case the feedrate is not derived from axial
machine data
MD32060 $MA_POS_AX_VELO (initial setting for positioning-axis velocity).
References:
/FB2/ Function Manual Extended Functions; Positioning Axes (P2)
/FB1/ Function Manual Basic Functions; Basic PLC Program (P3)
4.5.3 Special features of handwheel override in automatic mode
Velocity display
The velocity display for handwheel override shows the following values:
● Set velocity
● Actual velocity
Effect on transverse axes
If the axis is defined as a transverse axis and DIAMON is active, the handwheel pulses are
interpreted and traversed as diameter values while handwheel override is active.
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
= programmed velocity
= resultant velocity including handwheel override
Target position of path axes X, Y and Z
Activate velocity override for path axes;
path velocity = 1500 mm/min
Manual and Handwheel Travel (H1)
Handwheel override in automatic mode
313