699
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
31 Data Transfer 3 – FNC275 to FNC279
31.2 FNC279 – WBFM / Divided BFM Write
31
FN
C
275-FN
C
279
Da
ta
Tr
ans
fe
r 3
32
FN
C
280
-F
N
C
28
9
H
igh Speed
Pr
oces
si
ng 2
33
FN
C
290-FN
C
299
Ext
ensi
on Fi
le
R
egi
st
er
34
SF
C
•S
T
L
Pr
o
g
ra
m
m
in
g
35
In
te
rru
p
t
Funct
ion
36
Sp
e
cia
l De
vic
e
37
E
rro
r C
o
d
e
A
V
e
rs
ion U
p
In
fo
rm
a
tio
n
B
Ex
ec
ut
ion Ti
m
e
s
C
Appl
ic
ab
le
In
st
ru
ct
ion Li
st
31.2
FNC279 – WBFM / Divided BFM Write
Outline
This instruction writes data to continuous buffer memories (BFM) in a special function block/unit in several
operation cycles in the time division method. This instruction is convenient to write send data, etc. to buffer
memories in a special function block/unit for communication in the time division method.
TO (FNC 79) instruction is also available to write data to the buffer memory (BFM).
→
For TO (FNC 79) instruction, refer to Section 15.10.
1. Instruction format
2. Set data
3. Applicable devices
S
: Except special data register (D)
Operand Type
Description
Data Type
m1
Unit number [0 to 7]
16-bit binary data
m2
Head buffer memory (BFM) number [0 to 32766]
Head device number storing data to be written to buffer memory (BFM)
n1
Number of all buffer memories (BFM) to be written [1 to 32767]
n2
Number of points transferred in one operation cycle [1 to 32767]
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
m1
3 3
3 3
m2
3 3
3 3
S
3
3
n1
3 3
3 3
n2
3 3
3 3
FNC 279
WBFM
16-bit Instruction
11 steps
WBFM
Mnemonic
Operation Condition
Continuous
Operation
−
Mnemonic
Operation Condition
32-bit Instruction
S
S
