Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 353)

7 Application Instructions API 50-99
D V P - P L C A P P L I C AT I O N M A N U A L 7-69
On
PLC
VCC
Y
Pull-up resistor
Signal output
Drive Y
6. Positive logic (negative polarity) output of BCD code
BCD value Y output (BCDcode) Signal output
b
3
b
2
b
1
b
0
8 4 2 1 A B C D
0 0 0 0 0 0 0 0 1 1 1 1
0 0 0 1 0 0 0 1 1 1 1 0
0 0 1 0 0 0 1 0 1 1 0 1
0 0 1 1 0 0 1 1 1 1 0 0
0 1 0 0 0 1 0 0 1 0 1 1
0 1 0 1 0 1 0 1 1 0 1 0
0 1 1 0 0 1 1 0 1 0 0 1
0 1 1 1 0 1 1 1 1 0 0 0
1 0 0 0 1 0 0 0 0 1 1 1
1 0 0 1 1 0 0 1 0 1 1 0
7. Negative logic (positive polarity) output of BCD code
BCD value Y output (BCDcode) Signal output
b
3
b
2
b
1
b
0
8 4 2 1 A B C D
0 0 0 0 1 1 1 1 0 0 0 0
0 0 0 1 1 1 1 0 0 0 0 1
0 0 1 0 1 1 0 1 0 0 1 0
0 0 1 1 1 1 0 0 0 0 1 1
0 1 0 0 1 0 1 1 0 1 0 0
0 1 0 1 1 0 1 0 0 1 0 1
0 1 1 0 1 0 0 1 0 1 1 0
0 1 1 1 1 0 0 0 0 1 1 1
1 0 0 0 0 1 1 1 1 0 0 0
1 0 0 1 0 1 1 0 1 0 0 1
8. Scan latched signal display
Positive logic (negative polarity) Negative logic (positive polarity)
Y output (latch) Output signal Y output (latch) Output signal
1 0 0 1
9. Settings of n :
Groups of 7-segment display 1 group 2 groups
Y output of BCD code ＋ － ＋ －
Scan latched signal display ＋ － ＋ － ＋ － ＋ －
n 0 1 2 3 4 5 6 7
＋ : Positive logic (negative polarity) output －: Negative logic (positive polarity) output
10. The polarity of transistor output and the polarity of the 7-segment display input can be the same or different by
the setting of n.