Siemens SINUMERIK 840DE

Feedrate Control and Spindle Motion
7.9 Feedrate with handwheel override (FD, FDA)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
7-27
Programming
FD=…
Or
FDA[axis]=0 or FDA[axis]=…
Or
FDA[axis]=...
Parameters
FD=… Handwheel travel for path axes with feedrate override
FDA[axis]=0 Handwheel travel for positioning axes according to
position parameter
FDA[axis]=... Handwheel travel for positioning axes with feedrate
override
Axis Positioning axes or geometry axes
The handwheel override function is non-modal. The function is deactivated in the next NC
block and the NC program continues to be executed.
Example
Path specification: The grinding wheel oscillating in the Z direction is moved to the workpiece
in the X direction using the handwheel.
=
;
The operator can then adjust the position of the tool until the spark generation is constant.
When "Delete distance-to-go" is activated, the program goes to the next NC block and
machining continues in NC mode.