Mitsubishi Electronics FX3G User Manual
113
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.7 High-Speed Counter [C] (FX3S/FX3G/FX3GC PLCs)
1
Introdu
ction
2
Ov
ervi
ew
ew
3
Instruction
Li
st
4
D
evices
in Det
ai
l
5
Specifi
ed the
De
vice
&
C
onst
ant
ant
6
Bef
ore
ore
Pr
og
ra
mmi
ng
ng
7
Bas
ic
ic
Instruction
8
FN
C00-FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
3. Calculation example
Example1: When the HSCS, HSCR or HSZ instruction is not used, and the instructions related to the number of
positioning axes (DRVI instruction [Y000], DRVA instruction [Y001]) are used in the FX
3G
PLC
Overall frequency: 200 kHz - (2 axes x 40 kHz) = 120 kHz
Example2: When the HSCS, HSCR or HSZ instruction is not used, and instructions related to the number of
positioning axes (DRVI instruction [Y000]) and the number of pulse width/pulse period measurement inputs
[X003] are used in the FX
[X003] are used in the FX
3G
PLC
Overall frequency: 200 kHz - (1 axes + 1 input) x 40 kHz = 120 kHz
<Counter No.>
<Contents of use>
C235(1-phase 1-counting)
50 kHz is input.
C236(1-phase 1-counting)
50 kHz is input.
C237(1-phase 1-counting)
10 kHz is input.
C253(2-phase 2-counting)
5 kHz is input.
Total
115kHz
≤
120kHz(Overall frequency)
<Counter No.>
<Contents of use>
C235(1-phase 1-counting)
50 kHz is input.
C236(1-phase 1-counting)
50 kHz is input.
Total
100kHz
≤
120kHz(Overall frequency)