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3UC

 Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

13 High Speed Processing – FNC 50 to FNC 59

FN
C

30

-FN
C

39

R

otati
on and 

Shi
ft

FNC4
0-F

NC4

9

D

ata O
per
ati

on

FN
C

50-FN

C

59

H

igh S

pe

ed 

P

rocessing

FM
C

60-FN

C

69

H

andy 

In

st

ru

ct

ion

FNC7
0-F

NC7

9

Ex

ter

nal FX

 I/O

 

D

evice

FN
C

80-FN

C

89

Ext
ernal
 FX 

De
vic

e

FN

C

100-
FN

C

10

9

Da

ta

 

Transf
er 2

FN

C

110-
FN

C

139

Floati

ng Poi

nt

FN

C

14

0-F

N

C

149

Da

ta

 

O

per
at

ion 2

FN

C

150-
FN

C

159

Posit

ioning 

C

ont
ro

l

Only high speed counters (C235 to C255) can be specified as 

.

Because instructions for high speed counters are dedicated to 32 bits, make sure to input "DHSZ (FNC 55)".

Make sure that 

 is smaller than or equivalent to 

.

1) DHSZ instruction executes comparison and outputs the result only when a counting pulse is input to a high speed

counter.
(When 

 is "1000" and 

 is "1999", the output 

 is set to ON as soon as the current value of C235

changes from "999" to "1000" or from "1999" to "2000".)

2) Because the comparison result cannot be obtained when restoring the power or when the PLC mode switches

from STOP to RUN, the result is not output even if the comparison condition is provided.

→ For details, refer to "13.6.1 Program in which comparison result is set to ON when power is turned ON [ZCP

→ For details, refer to "6. Priority order in operation among HSCS (FNC 53), HSCR (FNC 54), and HSZ (FNC 55)

→ For details, refer to "5. Reset operation by an external terminal [M8025*1: HSC (external reset) mode]" in

1) The comparison value occupies two devices from 

 or 

 respectively.

2) The output occupies three devices from 

.

   

S

  

S

1

  

S

2

  

S

1

  

S

2

  

S

1

  

S

2

   

D

  

S

1

  

S

2

   

D