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).
GSM (NM-GPRS/GSM) Green GSM Connection
Green Modem connection link up.
TxD
(NM-Modem)
Green The modem port is transmitting data.
Off Data is not being transmitted through the modem port.
RxD
(NM-Modem)
Green The modem port is receiving data.
Off No data is being received through the modem port.
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
Ω, 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
Ω, 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.)
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