User Manual

8. Advanced Setting
Tx Mode
Hi-performance mode is the default for Tx mode. If the driver
completes sending data out to the NPort W2250/W2150, the driver
will respond “Tx Empty” to the program.
Under classical mode, the driver will not notify the user’s program
that Tx is completed until all Tx data has been sent out from the
NPort W2250/W2150; this mode will cause lower throughput. If
you want to ensure that all data is sent out before further
processing, classical mode is recommended.
Enable/Disable Tx/Rx FIFO.
If disabled, NPort W2250/W2150 will send one byte each time
the Tx FIFO becomes empty; and an Rx interrupt will be generated
for each incoming byte. This will result in a faster response and
lower throughput. If you want to use XON/XOFF flow control, we
recommend setting FIFO to Disable.