Moxa NPORT 5110-T Manual do Utilizador descarregar pdf (Página 10)

NPort 5100 Series Getting Started

2-3

Connecting to a Serial Device

Connect the serial data cable between NPort 5100 and the serial device. NPort 5100’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 to see the signal definitions for the port.

LED Indicators

NPort 5100 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 5100 is booting up.

Blinking: Indicates an IP conflict, or DHCP or BOOTP server did not

respond properly.

Green

Steady on: Power is on and NPort 5100 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 Ethernet cable is disconnected, or has a short.

Tx/Rx

Orange Serial port is receiving data.

Green Serial port is transmitting data.

Off No data is being transmitted or received through the serial port.

Adjustable Pull High/Low Resistor for 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 5150/5130 uses jumpers to set the pull high/low resistor values for each serial port.

To set a termination resistor to 150 KΩ, make sure that the two jumpers (JP3 and JP4) assigned to the

serial port are not shorted by jumper caps. This is the default setting.

To set a termination resistor to 1 KΩ, make sure that the two jumpers (JP3 and JP4) assigned to the serial

port are shorted by jumper caps.

ATTENTION

Do not use the 1 KΩ setting on the NPort 5150 when using the RS

-232 interface. Doing so will degrade the

-232 signals and shorten the maximum allowed communication distance.

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