The DIO with built-in LT supports special inputs and outputs in
addition to standard I/O. These include High Speed Counter Input,
Pulse Output, PWM Output, and Pulse Catch.
High Speed Counter Input: Can receive a pulse up
to 100KHz (up to 50KHz for 2-Phase counter).
Pulse Output: Can output a pulse up to 65
KHz.
PWM Output: Can output a pulse up to 65 KHz.
Pulse Catch: Can detect a pulse at 100 KHz (on
for more than 5 microseconds).
Where and how to allocate I/O terminals differs between the
standard I/O and special I/O.
The same I/O terminals are used for standard
input, standard output, PWM output, pulse output, high-speed
counter. You cannot simultaneously use the maximum number of
terminals for each input or output
