Mono-phase/2-phase/Gate Control

Mono-phase/2-phase/Gate control indicates the usage of the signals of A phase and B phase.

It's necessary to set the software by the usage of the following input signals.

Mono-phase

A phase is UP pulse, B phase is DOWN pulse. It's the using mode that the system counts UP and counts DOWN at the rising edge of the two signals.
During mono-phase input, only 1x is valid. If UP pulse and DOWN pulse occur at the same time or the both pulses change to LOW, it can't be count normally.

The settings of count direction determines whether A phase is UP or B phase is UP. The figure illustrates in the case of DIR=1 (CW direction).

2-phase

It's the using mode of two pulses input, A phase (fast signal) and B phase (slow signal) that differ in phase by 90º.
During 2-phase input, 1x/2x/4x is valid.

The settings of count direction determines to UP count or DOWN count at the rising edge of A phase.
The figure illustrates in the case of DIR=1 (CW direction).

Gate Control

Mono-phase input with gate control.
Counts with A phase, B phase is regarded as gate signal. When B phase is being LOW, the rising edge of A phase is not counted.
During mono-phase input with gate control, 1x/2x is valid.

The settings of count direction determines to UP count or DOWN count at the rising edge of A phase.
The figure illustrates in the case of DIR=1 (CW direction).