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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
13 High Speed Processing – FNC 50 to FNC 59
13.5 FNC 54 – HSCR / High Speed Counter Reset
11
FNC30-FNC39
Rotation and
Shift
12
FNC40-FNC49
Data Operation
13
FNC50-FNC59
High Speed
Processing
14
FMC60-FNC69
Handy
Instruction
15
FNC70-FNC79
External FX I/O
Device
16
FNC80-FNC89
External FX
Device
17
FNC100-FNC109
Data
Transfer 2
18
FNC110-FNC139
Floating Point
19
FNC140-FNC149
Data
Operation 2
20
FNC150-FNC159
Positioning
Control
2. Only 32-bit operation instructions are available.
Because instructions for high speed counters are dedicated to 32 bits, make sure to input "DHSCR (FNC 54)".
3. Priority order in operation among HSCS (FNC 53), HSCR (FNC 54), and HSZ (FNC 55)
instructions for the same high speed counter
→ For details, refer to "6. Priority order in operations among HSCS (FNC 53), HSCR (FNC 54), and HSZ
(FNC 55) instructions for the same high speed counter" in Subsection 13.4.1.
4. Reset operation by an external terminal
→ For details, refer to "5. Reset operation by an external terminal [M8025*1: HSC (external reset) mode]" in
Subsection 13.4.1.
5. Other cautions on using HSCR instruction
→ For details, refer Subsection 13.4.1.
Program example
1. Example of self-reset circuit
When the current value of C255 becomes "400", C255 is immediately reset. Its current value becomes "0", and the
output contact is set to OFF.
C255
K300
FNC 54
DHSCR
K400 C255 C255
Reset value of DHSCR
400
Count-up value
300
Current value
of C255
Output contact
of C255
Comparison
value
Comparison
source
Output
destination
M8000
RUN monitor