Emerson Epsilon Eb Series Reference Manual page 46

Pulse/Quadrature Interpretation
In Pulse/Quadrature interpretation, a full quadrature encoder signal is used as the command.
When B leads A encoder counts are received they are interpreted as positive changes to the
Pulse Position Input. When A leads B encoder counts are received they are interpreted as
negative changes to the Pulse Position Input. All edges of A and B are counted, therefore one
revolution of a 2048 line encoder will produce an 8192 count change on the Pulse Position
Input.
Figure 23: Pulse/Quadrature Signals, + Command
Figure 24: Pulse/Quadrature Signals, – Command
Pulse/Pulse Interpretation
In Pulse/Pulse interpretation, pulses received on the A channel are interpreted as positive
changes to the Pulse Position Input. Pulses received on the B channel are interpreted as
negative changes to the Pulse Position Input.
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Operational Overview
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