Mitsubishi Electronics FX3G User Manual

Page of 964
435
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
 Series
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
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
Transfer 2
18
FNC1
10-
FNC139
Fl
oati
ng Poi
nt
19
FNC14
0-F
N
C
149
Da
ta
 
Operation 2
20
FNC1
50-
FNC159
Pos
itioning 
Control
3) Example of connecting one seven-segment display unit
The figure below shows an example of the FX
3U
 series main unit (sink output).
For wiring details, refer to the Hardware Edition of each PLC.
When using two sets of 4 digits (n = K4 to K7)
→ For selection of "n", refer to Subsection 15.5.2.
1) Data and strobe signal
a) 1st set of 4 digits
A 4-digit numeric value stored in 
 is converted from binary into BCD, and its each digit is output in turn
from 
 to 
+3 by the time division method.
The strobe signal is output in turn from 
+4 to 
+7 by the time division method also to latch the first
set of 4-digit seven-segment display unit. 
b) 2nd set of 4 digits
A 4-digit numeric value stored in 
+1 is converted from binary into BCD, and its each digit is output in
turn from 
+10 to 
+13 by the time division method.
The strobe signal is output in turn from 
+4 to 
+7 by the time division method also to latch the
second set of 4-digit seven-segment display unit. (The strobe signal outputs 
+4 to 
+7 are shared
by the 1st and 2nd sets.)
2) For 
 and 
+1, binary data ranging from 0 to 9999 is valid.
3) Example of connecting two seven-segment display units
The figure below shows an example of the FX
3U
 series main unit (sink output).
For wiring details, refer to the Hardware Edition of each PLC.
Related devices
→ For the instruction execution complete flag use method, refer to Subsection 6.5.2.
Device
Name
Description
M8029
Instruction execution com-
plete flag
Turns ON when output of 4 digits is finished.
10
0
4
2
8
1
1
2
4
8
1st set
V+
10
1
10
2
10
3
10
3
10
2
10
1
10
0
COM
+1
+2
+3
+4
+6
+7
+5
PLC (transistor output type)
   
S
   
D
   
D
   
D
   
D
   
S
   
D
   
D
   
D
   
D
   
D
   
D
   
S
   
S
10
0
4
2
8
1
1
2
4
8
1st set
V+
10
1
10
2
10
3
10
3
10
2
10
1
10
0
COM
+1
PLC
(transistor output type)
+2
+3
+4
+6
+7
+5
2nd set
V+
1
2
4
8
4
2
8
1
10
3
10
2
10
1
10
0
+10
+11
+12
+13
COM