ICP DAS USA ECAT-2092T, User Manual

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Figure 27: Pulse/Direction counting mode
In clockwise/counterclockwise mode (Figure 28) the "A" signal indicates a positive
increments (clockwise signal) and the "B" signal a negative increments (counterclockwise
signal). Therefore the encoder counter increases by one when the "A" signal is going
high, while decreases by one when the "B" signal is going high.
Figure 28: Clockwise/ Counterclockwise counting mode
In the quadrant counting mode (Figure 29) the encoder counter increments when signal
"A" leads signal "B" and decrements when signal "B" leads signal "A". For example if the
last input signal for both "A" and "B" was off and in the next cycle "A" is on and "B" is
off then the direction is clockwise and the counter increments by one, but if "A" is off
and "B" is on then the direction is counterclockwise and the counter decrements by
one.
ICP DAS Page ECAT-2092T User Manual
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