AXIOMTEK MVS900-511-FL Series, Руководство пользователя

Страница: 48 / 80

MVS900-511/512-FL
Operating
42
The figure below depicts a case where a valid encoder value is pulse edge from phase A
encoder signal. The 1/2, 1/3 or 1/4 mode defines the number of pulses to skip between valid
acquisition. After the following pulses meet mode setting, the encoder value will be increasing
(As defined by the selection of 1/2, 1/3 or 1/4 mode).
4.1.2 De-bounce filter
Each encoder channel supports de-bounce filter function to reject noise. The de-bounce filter
can define the interval width for high/low signals. Signals with interval width less than the
defined value will be filtered out.
Below is a diagram illustrating the case of a filter timer set with a duration time of 1
microsecond:
Encoder
input
signal
Filtered
signal
<1us
1us
<1us
1us
<1us
4.1.3 Encoder Homing
This function can clear the counter value when Phase Z has a rising edge or when the user
gives the command. Further, the user can configure a specific value by software. When a
current value equals a value of setting, the counter value will reset zero.