Mitsubishi FX3G Series Programming Manual page 353

FX /FX /FX /FX
3G 3U 3GC 3UC
Programming Manual - Basic & Applied Instruction Edition
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
4. Reset operation by an external terminal
→ For details, refer to "5. Reset operation by an external terminal [M8025*1: HSC (external reset) mode]"
5. Other cautions on using HSCR instruction
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.
M8000
C255
RUN monitor
FNC 54
DHSCR
Series
55) instructions for the same high-speed counter" in Subsection 13.4.1.
K300
K400 C255 C255
Comparison Comparison Output
value source destination
13 High-Speed Processing – FNC 50 to FNC 59
13.5 FNC 54 – HSCR / High-Speed Counter Reset
→ For details, refer Subsection 13.4.1.
Reset value of DHSCR
400
Count-up value
300
Current value
of C255
Output contact
of C255
11
12
in Subsection 13.4.1.
13
14
15
16
17
18
19
20
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