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451
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
15 External FX I/O Device – FNC 70 to FNC 79
15.9 FNC 78 – FROM / Read From A Special Function Block
11
FN
C30
-FN
C3
9
R
ota
tion and
Shi
ft
12
FN
C40-FN
C49
D
ata O
perati
on
13
FNC
50-FNC
59
High-Speed
Proc
essing
14
FM
C60-FN
C69
H
andy
In
struction
15
FN
C70-FN
C79
E
xternal
F
X
I/O
De
vice
16
FNC
80-FNC
89
External
FX
Dev
ice
17
FNC1
00-
FNC10
9
Dat
a
Transfer 2
18
FNC1
10-
FNC139
Fl
oa
ting Poi
nt
19
FNC14
0-F
N
C
149
Da
ta
Operation 2
20
FNC1
50-
FNC159
Pos
itioning
Control
Program examples
In programs, the contents of buffer memories (BFMs) in special extension units/blocks are read (transferred) to data
registers (D), extension registers (R) and auxiliary relays (M) with digit specification using the FROM instruction and
direct specification of buffer memories
*1
.
*1.
This function is supported only in FX
3U
/FX
3UC
PLCs.
Example: When the BFM #4 (abnormal station information) in the CC-Link/LT master unit (whose unit number is fixed
to "0") built in the FX
3UC
-32MT-LT(-2) is read to D0
-In case of FROM instruction
-In case of MOV instruction
Example: When the BFMs #0 to 3 (remote station connection information) in the CC-Link/LT master unit (whose unit
number is fixed to "0") built in the FX
3UC
-32MT-LT(-2) are read to D10 to D13
-In case of FROM instruction
-In case of BMOV instruction
M8000
Unit
No. 0
BFM #4
Transfer
destination
Number of
transfer
points
FNC 78
FROM
K0
K4
D0
K1
M8000
Unit No. 0
BFM #4
Transfer
destination
FNC 12
MOV
U0\G4
D0
M0
Unit
No. 0
BFM #0
Transfer
destination
Number of
transfer
points
FNC 78
FROMP
K0
K0
D10
K4
M0
Unit No. 0
BFM #0
Transfer
destination
FNC 15
BMOVP
U0\G0
D10
Number of
transfer
points
K4
Содержание FX3G SERIES
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