User Manual
- 3 - 
Hardware Introduction 
The NPort W2150A models have one serial port; the NPort W2250A 
models have two serial ports. Both models support RS-232/422/485 
operation with DB9 connectors and include one 10/100M Ethernet port. 
NPort W2150A/W2150A-T 
NPort W2250A/W2250A-T 
Reset Button: The reset button is used to load the factory default 
settings. Use a pointed object to hold the reset button down for five 
seconds to load the factory defaults. 
Name 
Color 
Function 
End Panel LED Indicators 
Ethernet 
Orange 
10 Mbps Ethernet connection 
Green 
100 Mbps Ethernet connection 
Off 
Ethernet cable is disconnected 
Top Panel LED Indicators 
Ready 
Red 
Steady on: 
Power is on and the NPort is booting up 
Blinking: 
An IP conflict exists or the 
DHCP/BOOTP server did not respond 
properly 
Green 
Steady on: 
The NPort is functioning normally 
Blinking: 
The NPort is responding to Locate 
function 
Off 
Power is off or a power error condition exists 







