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A
B
X1
Count
X2
Count
2
4
3
1
X4
Count
Rockwell Automation Publication 2080-UM004D-EN-E - March 2018
Quadrature Counting
Quadrature
Encoder
11 12
5
6
7
8
9
10
Quadrature X4 Counter
Counter shall increment or decrement on each edge of the A and B pulses when
the signal is in the positive or negative direction respectively. See previous
illustration.
Quadrature X2 Counter
The counter increments or decrements on each edge of the A pulse when the
signal is in the positive or negative direction respectively. See previous illustration.
Down Counter
Pulses on A will cause the down counter (Counter 0). Also pulses on B will cause
the down counter (Counter 1).
High Speed Counter – 2080-MOT-HSC
6
11
10 9
8
7
5
Chapter 4
INPUT A
INPUT B
INPUT Z
4
3
2
1
0
31
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