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3. Instruction Set
3-193
On
PLC
VCC
Y
Pull-up resistor
Signal output
Drive Y
199. Positive logic (negative polarity) output of BCD code
BCD value Y output (BCD code) 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
200. Negative logic (Positive polarity) output of BCD code
BCD value Y output (BCD code) 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
201. Operation logic of output signal
Positive logic (negative polarity) Negative logic (positive polarity)
Drive signal (latch) Data control signal Drive signal (latch) Data control signal
1 0 0 1
202. Parameter n settings:
Sets of 7-segment display 1 set 2 sets
BCD code data control signal
＋ － ＋ －
Drive (latch) signal
＋ － ＋ － ＋ － ＋ －
n
0 1 2 3 4 5 6 7