User Manual

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NOTE
The NPort 5110A, NPort 5130A, and NPort 5150A have the
same form factor.
Reset Button—Press and hold the Reset button for 5 seconds to load
factory defaults: Use a pointed object, such as a straightened paper clip
or toothpick, to depress the reset button. This will cause the Ready LED
to blink on and off. The factory defaults will be loaded once the Ready
LED stops blinking (after about 5 seconds). At this point, release the
reset button.
LED Indicators—The NPort 5100A’s top panel has three LED
indicators, described in the following table.
LED
Name
LED
Color
LED Function
Ready
Red
Steady on:
Power is on and the NPort is booting up.
Blinking:
Indicates an IP conflict, or DHCP or
BOOTP server is not responding properly.
Green
Steady on:
Power is on and the NPort is functioning
normally.
Blinking: The NPort has been located by the NPort
Administrator’s Location function.
Off
Power is off, or a power error.
Link
Orange
10 Mbps Ethernet connection.
Green
100 Mbps Ethernet connection.
Off
Ethernet cable is disconnected.
Tx/Rx
Orange
Serial port is receiving data.
Green
Serial port is transmitting data.
Off
Data is not being transmitted or received through the
serial port.
Adjustable pull high/low resistor for RS-422/485 (150 KΩ or 1
KΩ)
Jumpers are used to set the pull high/low
resistor values. The default is 150 KΩ. Short
the jumpers to set this value to 1 KΩ. Do not
use the
1 KΩ setting with RS-
232 mode, since
doing so will degrade the RS
-232 signals and
sh
orten the communication distance.