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19 BUILT-IN I/O FUNCTION
19.2 FX3-compatible high-speed counter function
173
19
LC device
: High-speed transfer capable (special relay is immediately updated)
: Normal transfer capable (special relay is updated in END processing)
: Transfer not possible (read-only)
Precautions when using FX3-compatible high-speed counters
Shown below are the precautions for using the FX3 compatible high-speed counter. For any other precautions, see the
precautions for each function.
• When the FX3 compatible function is valid, it is possible to specify the LC device in (s1) of the HSCS instruction/HSCR
instruction and (s) of the HSZ instruction. If an LC device that is not used as high-speed counter is specified, an error
occurs, and the HSCS instruction, the HSCR instruction, and the HSZ instruction do not operate.
• Set up the table with the CH number of the counter if the table number of the high-speed comparison table/the multi-point
output high-speed comparison table needs to be specified.
• To clear the current value of the LC device, use the DHCMOV instruction or the RST instruction to clear it.
• Use the latch setting to use LC35 to LC55 with the high-speed counter of the FX3 compatible function.
• The reset coil of the LC device is cleared when the power is set from OFF to ON.
LC device Function Compatible with
HCMOV instruction
Compatible with
MOV instruction
(s) (d) (s) (d)
LC35 High-speed counter current value (CH1)
LC36 High-speed counter current value (CH2)
LC37 High-speed counter current value (CH3)
LC38 High-speed counter current value (CH4)
LC39 High-speed counter current value (CH5)
LC40 High-speed counter current value (CH6)
LC41 High-speed counter current value (CH1)
LC42 High-speed counter current value (CH3)
LC43 High-speed counter current value (CH5)
LC44 High-speed counter current value (CH1)/High-speed counter current value (CH7)
LC45 High-speed counter current value (CH3)/High-speed counter current value (CH8)
LC46 High-speed counter current value (CH1)
LC47 High-speed counter current value (CH1)
LC48 High-speed counter current value (CH4)
LC49 High-speed counter current value (CH1)
LC50 High-speed counter current value (CH4)
LC51 High-speed counter current value (CH1)
LC52 High-speed counter current value (CH1)
LC53 High-speed counter current value (CH4)
LC54 High-speed counter current value (CH1)/High-speed counter current value (CH7)
LC55 High-speed counter current value (CH4)