Path Action
5.6 Traversing with feedforward control, FFWON, FFWOF
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
5-21
Note
Variations in path velocity due to the input of a new feedrate are not changed either. This
remains the responsibility of the programmer of the subprogram.
Note
If a short acceleration takes place during a machining function with high path velocity,
and is thus followed almost immediately by braking, the reduction in the machining time is
only minimal. Acceleration of this kind can, however, have undesirable effects if, for
example, it results in machine resonance.
References: Functional description /FB1/; B1; "Smoothing the path velocity"
5.6 Traversing with feedforward control, FFWON, FFWOF
Function
Using feedforward control the velocity-dependent overtravel in path traversing is reduced to
zero. Traversing with feedforward control permits higher path accuracy and thus improved
machining results.
Programming
FFWON
Or
FFWOF
Parameters
FFWON Activate feedforward control
FFWOF Deactivate feedforward control
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