Traversing With Feedforward Control, Ffwon, Ffwof - Siemens SINUMERIK 828D Programming Manual

14.8

Traversing with feedforward control, FFWON, FFWOF

Function
The feedforward control reduces the velocity-dependent overtravel when contouring towards
zero. Traversing with feedforward control permits higher path accuracy and thus improved
machining results.
Syntax
FFWON
FFWOF
Significance
FFWON
FFWOF
Note
The type of feedforward control and which path axes are to be traversed with feedforward
control is specified via machine data.
Default: Velocity-dependent feedforward control
Option: Acceleration-dependent feedforward control
Example
Program code
N10 FFWON
N20 G1 X... Y... F900 SOFT
Fundamentals
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
: Command to activate the feedforward control
: Command to deactivate the feedforward control
14.8 Traversing with feedforward control, FFWON, FFWOF
Supplementary commands
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