In the Perception software, the event bits are combined within one channel and
labeled as CH1_1 through CH1_64. The counter/timer channels are referred to
as CH2 through CH4.
For frequency measurements, the counter/timer channels use an additional
gate clock to create a time interval (gate time) in which pulses are counted. The
minimum gate time is 1 μs and the maximum gate time is 10 s. A long gate time
increases the Timer/Counter resolution but comes with slower update rates.
Selecting the right gate time is a balance between update rate and required
resolution.
Counter input
The counter input is the actual signal input. The counter is
incremented on each rising edge of this signal. The maximum input frequency
is 10 MHz.
Direction
The direction signal determines whether the counter is incremented
(direction = “0”), or decremented (direction = “1”) on each rising edge of the
counter input.
Use Perception to select the operation mode of the counter/timer channel.
Perception will also calculate the RPM (Rotations Per Minute) using the
measured frequency and additional information like pulses per rotation.
12.10.7
GN6470 and GN4070 Quadrature (position) mode pinning
When in quadrature mode, Event Bits 53 through 63 are used to provide the
position measurement capability by measuring the signals as provided by
quadrature encoders. These bits are located on the bottom connector as
follows:
GEN3i
300
I3763-3.1 en HBM: public
