317
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
FN
C30-
FN
C39
R
o
ta
tion and
Sh
ift
12
FNC
4
0
-FNC49
D
a
ta
Op
e
ra
tio
n
13
FNC5
0
-FNC5
9
H
igh Speed
Pr
ocessi
ng
14
FM
C6
0
-F
NC6
9
H
and
y
In
st
ru
cti
o
n
15
FNC7
0
-FNC7
9
Ex
te
rn
a
l F
X
I
/O
D
evi
ce
16
FNC8
0
-FNC8
9
Ext
e
rnal
FX
D
evi
ce
17
F
N
C1
00
-F
NC
10
9
Da
ta
Tr
ansf
e
r 2
18
FN
C
110-FN
C
13
9
Fl
oat
ing P
o
in
t
19
FN
C
140-FN
C
149
Da
ta
O
per
at
io
n
2
20
FN
C
15
0-F
N
C
159
P
o
si
tioni
ng
C
ont
ro
l
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" is 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" is 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, the response delay time of the input filter can be changed.
(X000 to X007 in the FX
3U
-16M
)
→
For the details, refer to "13.1.1 What should be understood before using REF instruction" later.
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
Response delay
improved time
Response delay
improved time
Only END processing
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
