A-B Phase Mode Settings
Set the A-B Phase. The A-B phase is a channel related to the encoder resolution. If the encoder supports two channels, a connection is made to the A-B phase, but if the encoder only supports one channel, the connection is made to the A phase.
There are four options in the A-B Phase Settings. QEP mode and Count(A)-Direction(B) mode are options that use two channels, and Up Count(A) mode and Down Count(A) mode are options that use 1 channel.
A-B Phase Mode | Description |
QEP Mode | Quadrature Encoder Pulse Mode. This combines the counts of channels A and B to expand the resolution by four times. For example, if A and B phases have 500 counts each, the overall resolution will be 2000 = 500 4 counts. |
Count(A)-Direction(B) Mode | A phase is an option for counts, and B phase is an option determining the direction. Depending on the high/low status of the B phase, the count of the A phase is adjusted up or down. |
Up Count(A) Mode | This uses the A phase signal as an up count. |
Down Count(A) Mode | This uses the A phase signal as a down count. |
The A Phase Polarity and B Phase Polarity settings determine whether to use each phase as is or in reverse. Reversing each phase can change the up and down counts, so if changing the direction is the objective, using Inverse mode allows more intuitive settings.
