NPort 5100A Series Getting Started
Connecting to the Network
Connect one end of the Ethernet cable to the NPort 5100A’s 10/100M Ethernet port and the other end of the
cable to the Ethernet network. The NPort 5100A will indicate a valid connection to the Ethernet in the following
ways:
• The Ethernet LED maintains a solid green color when connected to a 100 Mbps Ethernet network.
• The Ethernet LED maintains a solid orange color when connected to a 10 Mbps Ethernet network.
• The Ethernet LED will flash when Ethernet packets are being transmitted or received.
Connecting to a Serial Device
Connect the serial data cable between the NPort 5100A and the serial device. The NPort 5100A’s serial port
uses the RS-232/422/485 interface to transmit data. The port uses a standard male DB9 pin assignment. Refer
to Appendix A for the port’s signal definitions.
LED Indicators
The NPort 5100A has 3 LED indicators, as described in the following table.
LED Name LED Color LED Function
Ready Red Steady on: Power is on and NPort 5100A is booting up.
Blinking: Indicates an IP conflict, or DHCP or BOOTP server did not
respond properly.
Green Steady on: Power is on and the NPort 5100A is functioning normally.
Blinking: The device server has been located by Administrator’s
Location function.
Off Power is off, or power error condition exists.
Link Orange The device is connected to a 10 Mbps Ethernet connection.
Green The device is connected to a 100 Mbps Ethernet connection.
Off The Ethernet cable is disconnected.
Tx/Rx Orange The serial port is receiving data.
Green The serial port is transmitting data.
Off No data is being transmitted or received through the serial port.
Adjustable Pull High/Low Resistor 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. Since a particular pull high/low resistor value cannot fit all environments, the
NPort 5150A/5130A uses jumpers and the NPort P5150A uses dip switches to set the pull high/low resistor
values for each serial port.
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