Mcam线切割出的程序没有F值，请高手帮忙！

用Mcam线切割出的程序没有F值，请高手帮忙！谢谢了。
L100
N1 G90
N2 Z1 = 0.0000
N3 Z2 = 10.0000
N4 Z3 = 0.0000
N5 Z4 = 25.0000
N6 Z5 = 20.0000
N7 G92 X-16.5431 Y-20.101
N8 G00 X-16.5431 Y-20.101
N9 M20
N10 M78
N11 M78
N12 M80
N13 M82
N14 M84
N15 E101
N16 M90
N17 G01 G41 H6 X-13.5431
N18 G03 X-19.5431 I-3. J0.
N19 X-13.7083 Y-21.0826 I3. J0.
N20 M01
N21 X-13.5431 Y-20.101 I-2.8348 J.9816
N22 X-13.5847 Y-19.6033 I-3. J0.
N23 G01 G40 X-14.3736 Y-19.736
N24 M00
N25 M21
N26 G00 X-16.5431 Y-20.101
N27 M20
N28 M78
N29 M78
N30 M80
N31 M82
N32 M84
N33 E102
N34 M90
N35 G01 G41 H7 X-13.5431 Y-20.101
N36 G03 X-19.5431 I-3. J0.
N37 X-13.5431 I3. J0.
N38 X-13.5847 Y-19.6033 I-3. J0.
N39 G01 G40 X-14.3736 Y-19.736
N40 M00
N41 M21
N42 M02
%

F是速度的意思吧？速度应该由系统控制，想快就快想慢就慢