NPort W2150A-W4/W2250A-W4 Series User Manual
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2.
On the
Basic Setting
tab, select the
COM Number
that will be assigned to the serial port. If you have
selected multiple ports, you can assign COM numbers automatically in sequential order by selecting the
Auto Enumerating COM Number for Selected Ports
function.
3.
On the
Advanced Setting
tab, configure
Tx Mode
,
FIFO
, and
Fast Flush
.
Tx Mode
: In Hi-Performance mode, the driver immediately issues a “Tx Empty” response to the
program after sending data to the NPort. In Classical mode, the driver sends the “Tx Empty” response
after confirmation is received from the NPort. Classical mode is recommended if you want to ensure
that all data is sent out before further processing.
FIFO
: This tells the driver whether or not to use the FIFO.
Network Timeout
: You can use this option to prevent blocking if the target NPort is unavailable.
Fast Flush
: When enabled, the driver flushes only the local buffer on the host for a Win32
PurgeComm() function call. When disabled, both the local and remote buffers are flushed. If your
application uses PurgeComm() and performance seems sluggish, try enabling Fast Flush.
