NPort 6000 Series Getting Started
LED Name LED Color LED Function
P1 to P16 Rx
(6610/6650)
Orange The serial port is receiving data.
Off No data is being received through the serial port.
The NPort 6450 and 6650 models have additional LEDs for the alarm and optional network modules:
LED Name LED Color LED Function
Module
(6450/6610/6650)
Green The fiber-optic network module is plugged in and has been detected.
Off The fiber-optic network module is not present.
Link (on optional
network modules
NM-FX01-M-SC,
NM-FX01-S-SC)
Orange
Steady on: The NPort 6000 device server is connected to an Ethernet
fiber connection, but the port is idle.
Blinking: The fiber port is transmitting or receiving data.
Alarm
(6450/6610/6650)
Red The relay output (DOUT) is open (exception).
Off The relay output (DOUT) is short (normal condition).
Adjustable Pull High/Low Resistors for the RS-485 Port
In some critical environments, you may need to add termination resistors to prevent the reflection of serial
signals. When using termination resistors, it is important to set the pull high/low resistors correctly so that the
electrical signal is not corrupted. The NPort 6000 uses jumper settings or DIP switches to set the pull high/low
resistor values for each serial port.
To set the pull high/low resistors to 150 K
, make sure that the two jumpers assigned to the serial port
are not shorted by jumper caps. (For the NPort 6650, make sure both of the assigned DIP switches are in the
OFF position.) This is the default setting.
To set the pull high/low resistors to 1 K
, make sure that the two jumpers assigned to the serial port are
shorted by jumper caps. (For the NPort 6650, make sure both of the assigned DIP switches are in the ON
position.)
ATTENTION
Do not use the 1 K
Ω setting on the NPort 6000 when using the RS-
232 interface. Doing so will degrade the
RS
-232 signals, shorten the maximum allowed communication distance, and the Rx LED may light up.
NPort 6150/6250/6450 Jumpers