Count Modes - Define Instruments PRO-CTR200 Manual

6

COUNT MODES

6.1 - Quad x1
This is the most commonly used counter function. Depending on the direction of
rotation, the A signal either leads or lags the B signal.
Pulse Train Direction
Signal A
Signal B
Pulse Train Direction
Signal A
Signal B
6.2 - Quad x2
In this mode, the angular/linear resolution of the x1 mode is increased by 2. Depend-
ing on the direction of rotation, the A signal leads or lags the B signal.
Pulse Train Direction
Signal A
Signal B
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Primary counter decrements:
Clockwise

Primary
Counter
With A and B
signals 90°
out-of-phase
Primary counter increments:
Counter-clockwise

Primary
Counter
With A and B
signals 90°
out-of-phase
Primary counter decrements:
Clockwise

Primary
Counter

With A and B
signals 90°
out-of-phase
On a rising edge A signal when B is low
On a falling edge A signal when B is low.
On a rising edge A signal when B is low
On a falling edge A signal when B is high
Example: Shaft Encoder
Example: Shaft Encoder
PRO-CTR-MAN-16V03 (0128)
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