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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.7 High-Speed Counter [C] (FX3S/FX3G/FX3GC PLCs)
1
Introduction
2
Overview
3
Instruction
List
4
Devices
in Detail
5
Specified the
Device &
Constant
6
Before
Programming
7
Basic
Instruction
8
FNC00-FNC09
Program Flow
9
FNC10-FNC19
Move & Compare
10
FNC20-FNC29
Arith. & Logic
Operation
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
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)