X4 Quadrature Encoder Mode
The X4 Quadrature Encoder mode operates much like the X1 Quadrature Encoder except that
the resolution is quadrupled. When an X4 quadrature encoder is attached to inputs A and
B, the phase relation of Inputs A and B determine the count direction.
When Invert Counter Direction is disabled, if Input A leads Input B, the counter
increments. If Input B leads Input A, the counter decrements.
X4 Quadrature Encoder Mode (Invert Counter Direction Disabled)
When Invert Counter Direction is enabled, if Input A leads Input B, the counter
decrements. If Input B leads Input A, the counter increments.
X4 Quadrature Encoder Mode (Invert Counter Direction Enabled)
TIP:
When both Input A and Input B transition simultaneously, instead of in the
defined 90° phase separation, the quadrature signal is invalid.
In this case, the
I.Counterxx.QuadratureErrorCount
tag increments.Provide Feedback