Feed interpolation

Constant feed interpolation

Command	FCONST (standard setting)
Cancellation	FLIN

The programmed velocity is applied as fast as possible with the constant feed interpolation (default).

Sample 1:

N05 FCONST
N10 G01 X1000 F50000
N20 G01 X2500 F80000
N30 G01 X3500 F60000
...

Linear feed interpolation

Command	FLIN
Cancellation	FCONST

The linear feed interpolation transfers the velocity linearly over the path from v_start to v_end.

Sample 1:

N05 FCONST
N10 G01 X1000 F50000
N15 FLIN
N20 G01 X2500 F80000
N30 G01 X3500 F60000
...

Notice If the velocity on the segment transition has to be reduced more drastically than the programmed segment velocity, due to the geometry or M function for example, then the linear velocity is maintained as long as possible. The reduced segment velocity will delayed, only if required dynamically.