NPort IA5150/5250 Series User’s Manual
Configuring NPort Administrator
6-22
6.
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 IA5150/5250s, remember to check the
“Auto Enumerating” function to use the COM No. you select as the first COM No.
7.
Hi-performance
mode is the default for Tx mode. If the driver completes sending data out to
the NPort IA5150/5250, 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 IA5150/5250; 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 IA5150/5250 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.
Fast Flush (only flush local buffer)
•
We have added one optional Fast Flush function to Moxa new NPort Real COM driver.
NPort Administrator Suite for 2G NPort
adds it after version
1.2
.
•
For some applications, the user’s program will use the Win32 “PurgeComm()” function
before it reads or writes data. With our design, after the program uses this Purge Comm()
