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355
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
13 High Speed Processing – FNC 50 to FNC 59
13.1 FNC 50 – REF / Refresh
11
FNC3
0-F
NC3
9
R
otati
on and
Shif
t
12
FNC4
0-F
NC4
9
D
ata
O
per
ati
on
13
FN
C
50-FN
C
59
H
igh Speed
Pr
ocess
ing
14
FM
C
60-
FN
C
69
H
andy
In
st
ru
ct
ion
15
FNC7
0-F
N
C7
9
Ex
ter
nal
FX
I/O
D
evice
16
FN
C
80-FN
C
89
Ext
ernal FX
De
vic
e
17
FN
C
100-
FN
C
109
Da
ta
Transf
er 2
18
FN
C
110-
FN
C
139
Fl
oati
ng Poi
nt
19
FN
C
140
-F
N
C
14
9
Da
ta
O
per
ati
on 2
20
FN
C
150-
FN
C
159
Posit
ioning
C
ontr
ol
Explanation of function and operation
1. 16-bit operation (REF and REFP)
1) When refreshing outputs (Y)
"n" points are refreshed from the specified output device
. ("n" must be a multiple of 8.)
- When this instruction is executed, the output latch memory is refreshed to the output status in the
specified range.
2) When refreshing inputs (X)
"n" points are refreshed from the specified input device
. ("n" must be a multiple of 8.)
- If the input information is turned ON approximately 10 ms (response delay time of the input filter) before
the instruction is executed, the input image memory turns ON when the instruction is executed.
- In X000 to X017
*1
, the response delay time of the input filter can be changed.
*1 X000 to X007 in the FX
3G
, FX
3U
-16M
and FX
3UC
-16M
.
→
For details, refer to "13.1.1 What should be understood before using the REF instruction".
D
Head
device
number
Number
of points
K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)
Y000, Y010 or Y020: Up to the final output number
(whose least significant digit number is "0")
FNC 50
REF
n
D
Command
input
ON
ON
Image memory output (Y)
REF instruction (executed)
Output refresh
REF instr END processing
END instruction
processing (output)
ON
Improved response
delay time
Only END processing
Improved response
delay time
D
Head
device
number
Number
of points
K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)
X000, X010 or X020: Up to the final input number
(whose least significant digit number is "0")
FNC 50
REF
n
D
Command
input