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Chapter 4
High Speed Counter – 2080-MOT-HSC
Increment Pulse
(Input A)
Decrement Pulse
(Input B)
Present Count
1
30
Incrementing
Encoder or Sensor
Decrementing
Encoder or Sensor
3
2
Up/Down Counting
A
0 or 1
0
Quadrature Counter (X1)
The module is compatible with 2 and 3 signal quadrature, or incremental
encoders. The A and B signals are offset by 90 degrees and encode the direction of
the rotation. The third signal, Z, occurs once per revolution and is often used as a
home reference. The module's use of this signal is discussed below in the Z input
section.
Increment Pulse
(count up)
Decrement Pulse
(count down)
2
1
B
Change in Count Value
0 or 1
+1
-1
0
0
0
Rockwell Automation Publication 2080-UM004D-EN-E - March 2018
INPUT A
INPUT B
INPUT Z
0
0
1
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