Moxa Technologies NPort 5200 Series User Manual page 64

Select COM Settings to modify COM
No., default setting, etc.
Select the COM No.
COM ports that are "In use" or "Assigned" will also be indicated in this
drop-down list.
If you select multiple serial ports or multiple NPort 5200s, remember to
check the "Auto Enumerating" function to use the COM No. you select
as the first COM No.
Hi-performance mode is the default for Tx mode. If the driver
completes sending data out to the NPort 5200, 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 5200; 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 5200 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.
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