Siemens Sinumerik 840D sl Programming Manual page 121

Syntax
FD=<velocity>
FDA[<axis>]=<velocity>
Meaning
FD=<velocity>:
FDA[<axis>]=<velocity>:
<axis>:
Note
FD and FDA are non-modal.
Example
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
8.8 Feedrate with handwheel override (FD, FDA)
Path feedrate and enabling of velocity override with
handwheel
<velocity>:
● Value = 0: Not allowed!
● Value ≠ 0: Path velocity
Axial feedrate
<velocity>:
● Value = 0: Path default with handwheel
● Value ≠ 0: Axial velocity
Axis identifier of positioning axis
Path definition: The grinding wheel oscillating
in the Z direction is traversed to the workpiece
in the X direction with the handwheel.
The operator can continue to feed manually
until the sparks are flying uniformly. Activating
"Delete distance-to-go" switches to the next
NC block and machining continues in AUTO‐
MATIC mode.
Feed control
121