Moxa Technologies NPort DE-311 User manual

P/N: 1802003114403

*1802003114403*

NPort DE-311 Series

Quick Installation Guide

Version 5.2, January 2021

Technical Support Contact Information

www.moxa.com/support



- 2 -

Overview

Welcome to Moxa’s NPort Express DE-311, a compact palm-sized data

communication device that allows you to control RS-232/422/485 serial

devices over a TCP/IP based Ethernet network.

Package Checklist

Before installing the DE-311, verify that the package contains the

following items:

•NPort DE-311 universal serial device server

•Mini adapter

•Quick installation guide (printed)

•Warranty card

Optional Accessories

•DK-35A (for 35 mm DIN-rail, includes 4 screws)

Please notify your sales representative if any of the above items is

missing or damaged.

Hardware Introduction

- 3 -

Reset Button—Hold the reset button down to erase the password or load

the factory defaults, depending on how long the button is held down:

•3 seconds to erase the password

The ready LED will flash every half-second when the password has

been erased. You may release the reset button at this time.

•10 seconds to load factory defaults

The ready LED will flash five times every second when the factory

defaults have been loaded. You may release the reset button at this

time.

LED Indicators—There are three LED indicators on the top panel:

LED Name

LED Color

LED Function

PWR

Red

Power is on

Off

Power is off, or power error condition exists

Link

Orange

10 Mbps Ethernet connection

Green

100 Mbps Ethernet connection

Off

Ethernet cable is disconnected, or has a short

Ready

Green

System is ready

Off

System error

Hardware Installation

Placement Options

You may place the unit on

a desktop or other

horizontal surface.

You

may also make use of the

DIN

-rail or wall mount

options, as illustrated

here.

Wall Mount

DIN-Rail

DIP Switch

The top panel contains the following table, which explains the DIP switch

settings for the serial port. The DIP switches are located at the rear panel.

SW1

Serial Connection

SW2

SW3

Interface Mode

RS-232 Console

–

OFF Data Comm

OFF

RS-232

OFF

RS-422

OFF

2-wire RS-485 by RTS

2-wire RS-485 by ADDC

SW1 is used to activate the serial console. When SW1 has been changed,

the unit will reboot to initialize the new setting. You will need to wait for

the green Ready LED to turn off and then on again, which indicates that

serial console mode has been activated or deactivated. SW2 and SW3 are

used to select the serial port interface. (Note that RTS stands for Ready

To Send and ADDC stands for Automatic Data Direction Control.)

- 4 -

When adjusting the DIP switches, please keep the following in mind:

•To use the serial port as an RS-232 console connection, such as when

using MOXA PComm Terminal Emulator or HyperTerminal, set SW1 to

the ON.

•Some configuration may be carried out through a Telnet connection,

during which data is transmitted through the unit’s Ethernet port.

SW1 must be OFF in order for the unit to establish a Telnet

connection.

Software Installation Information

You may use the default IP address 192.168.127.254 to log into the

DE-311 to configure proper settings for your environment. More details

you may find in the User Manual from Moxa’s website.

Pin Assignments and Cable Wiring

Female DB9 Connector Pin Assignments

RS-232 Wiring

- 5 -

RS-422 Wiring

RS-485 Wiring

Mini Adapter

The NPort Express DE

-311 accepts devices with

both male and female connectors. A D

-shell

female serial connector is built

-in, and a

DB9 male

null

-modem adapter is included as a standard

accessory.

- 6 -

If you wish to make your own DB9 to DB9 null-modem (or cross-over)

cable, the pinouts are as follows:

Environmental Specifications

Power requirements

DC 9 V to 30 V, 300 mA at 9 V

Operating temp.

0 to 55°C

Operating humidity

5 to 95% RH

Dimensions (W×D×H)

90 × 100.4 × 22 mm

3.54 × 3.95 × 0.87 inch

(including ears)

67 × 100.4 × 22 mm

2.64 × 3.95 × 0.87 inch

(without ears)

Magnetic isolation

1.5 KV for Ethernet port

Regulatory approvals

FCC B, CE B, UL, CUL, TUV

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