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12 Applied Instructions (High Speed Processing)
274
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
12.4 DHSCS, DHSCS_I / High Speed Counter Set, High Speed Interrupt Counter Set
Operation of FX3U and FX3UC PLCs
*1. To change the comparison results by the instructions (1) to (3)
and (5) in the previous page, change the comparison value
"K500" in the instructions (1) to (3) and (5) in the previous
page to "K0".
*2. To set Y005 to ON in the DHSZ instruction (4) in the previous
page, set a value smaller than the comparison value "K500".
However, due to the response delay at the output, the output
may not operate within the short time before the counter's
current value is reset to "0" (to K500 (K0)).
Operation of FX
1S, FX1N, FX1NC, FX2N, FX2NC, FX3S, FX3G and FX3GC PLCs.
*1. Due to the response delay at the output, the output may not
operate within the short time before the counter's current value
is reset from "0" to "1".
7. Timing at which the instruction is executed
The comparison instruction for high-speed counter is executed at the END instruction for the scan in which
the comparison instruction is driven.
When the comparison value is changed, the changed comparison instruction also becomes effective at the
END instruction for the scan in which the comparison instruction is driven.
500
250
0
Current
value
Y003
Y004
Y005
Y000 to Y002 and Y006 do not change.
*1
ON ON
OFF
OFF
It does not change.
*2
500
250
0
Current
value
Y003
Y004
Y005
ON ON
ON
Current
value:1
Y000,Y001
Y002
ON
OFF
*1
Current
value:1