411
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
15 External FX I/O Device – FNC 70 to FNC 79
15.5 FNC 74 – SEGL / Seven Segment With Latch
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
15.5
FNC 74 – SEGL / Seven Segment With Latch
Outline
This instruction controls one or two sets of 4-digit seven-segment display units having the latch function.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (SEGL)
The 4-digit numeric value stored in
is converted into BCD data, and each digit is output to the seven-
segment display unit with the BCD decoder in the time division method.
When using one set of 4 digits (n = K0 to K3)
→
For selection of "n", refer to Subsection 15.5.2.
1) Data and strobe signal
A 4-digit numeric value stored in
is converted from binary into BCD, and its each digit is output in
turn from
to
+3 in the time division method.
The strobe signal is output in turn from
+4 to
+7 in the time division method also to latch one
set of 4-digit seven-segment display unit.
2) For
, binary data in the range from 0 to 9999 is valid.
Operand Type
Description
Data Type
Head word device converted into the BCD format
16-bit binary
Head Y number to be output
Bit
n
Parameter number [setting range: K0 (H0) to K7 (H7)]
16-bit binary
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
3
3
3
3
3 3 3 3
3
3 3
3
3 3
3
3
n
3 3
−
32-bit Instruction
Mnemonic
Operation Condition
FNC 74
SEGL
SEGL
16-bit Instruction
7 steps
Mnemonic
Operation Condition
Continuous
Operation
S
D
S
D
S
Command
input
FNC 74
SEGL
n
S
D
S
D
D
D
D
S