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play) will be turned ON when one round of data is displayed, but there is no need
to connect them unless required by the application.
1
3
5
7
9
11
13
15
COM
0
2
4
6
8
10
12
14
DC
OD212
D
0
D
1
D
2
D
3
V
DD
(+)
V
SS
(0)
LE3 LE2 LE1 LE0
D
0
D
1
D
2
D
3
V
DD
(+)
V
SS
(0)
LE3 LE2 LE1 LE0
The outputs must be connected from an Output Unit with 8 or more output points
for four digits or 16 or more output points for eight digits. Basic Output, Special
I/O, or High-density Output Units can be used.
Note 1. Output Unit outputs normally employ negative logic. (Only the PNP output
type employs positive logic.)
2. The 7-segment display may require either positive or negative logic, de-
pending on the model.
3. The 7-segment display must have 4 data signal lines and 1 latch signal line
for each digit.
Using the Instruction If the first word holding the data to be displayed is specified at S, and the output
word is specified at O, and the SV taken from the table below is specified at C,
then operation will proceed as shown below when the program is executed. If
only four digits are displayed, then only word S will be used.
Data Storage Format
Leftmost 4 digits Rightmost 4 digits
S+1 S
Advanced I/O Instructions Section 5-28