User Manual
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The following figure illustrates the two mounting options: 
Software Installation Information 
For the NPort’s configuration, the default IP address of the NPort is: 
192.168.127.254. You may log in with the account name admin and 
password moxa to change any setting to meet your network topology 
(e.g., IP address) or serial device (e.g., serial parameters).  
For software installation, download the relative utilities from Moxa's 
website 
https://www.moxa.com/support/support_home.aspx?isSearchShow=1
•  Download the NPort Windows Driver Manager and install it as the 
driver to run with Real COM mode of the NPort Series. 
•  Execute NPort Windows Driver Manager; then map the virtual COM 
ports on your Windows platform. 
•  You may refer to the DB9 Male pin assignment section to loop back 
pin 2 and pin 3 for the RS-232 interface to carry out a self test on 
the device. 
•  Use HyperTerminal or a similar program (you may download Moxa's 
program, called PComm Lite) to test whether the device is good or 
not. 
Pin Assignments and Cable Wiring 
RS-232/422/485 (Male DB9) Pinouts 
PIN  RS-232 
RS-422/ 
RS-485 (4W) 
RS-485 
(2W) 
1 
DCD 
TxD-(A) 
– 
2 
RXD 
TxD+(B) 
– 
3 
TXD 
RxD+(B) 
Data+(B) 
4 
DTR 
RxD-(A) 
Data-(A) 
5 
GND 
GND 
GND 
6 
DSR 
– 
– 
7 
RTS 
– 
– 
8 
CTS 
– 
– 
9 
– 
– 
– 








