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NPort DE-211
Quick Installation Guide
Sixth Edition, June 2008
1. Overview
Welcome to Moxa’s NPort Express DE-211, 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.
2. Package Checklist
Before installing NPort Express DE-211, verify that the package contains
the following items:
y1 NPort Express DE-211, Universal Serial Device Server
yNPort DE-211 Quick Installation Guide
yPower adapter
yNPort Documentation & Software CD
yProduct Warranty Booklet
Optional Accessories
yNP21101 RS-232 cable: DB25 (M) to DB9 (F), 30 cm
yNP21102 RS-232 cable: DB25 (M) to DB9 (M), 30 cm
yNP21103 DB25 Terminal Block Kit for RS-422/485
yDK-35A DIN-Rail Mounting Kit (35 mm)
Notify your sales representative if any of the above items is missing or
damaged.
3. Hardware Introduction
The NPort DE-211 device server has one female DB25 serial port. The
four DIP switches located on the rear panel are used to select between
RS-232 COM mode, and one of four data modes: RS-232, RS-422,
4-wire RS-485, and 2-wire RS-485. See the “DIP Switch Settings &
Explanation” section for details.
RJ45 10BaseT
Ethernet port
Reset button*
Power
input
DIP
Switches
Female DB25
serial port
DIN-Rail
screw hole
Wallmount
screw hole
DE-211 RS-232/422/485 Device Server
Express
PWR
SW1 Serial
Connection
RS-232
Console
Data
Comm
ON
OFF
SW2
ON
ON
ON
ON
OFF
OFF
Link
Ready
Serial Tx
Serial Rx
SW3
OFF
ON
OFF
ON
OFF
ON
Serial Interface Mode
RS-232
RS-422
4-Wire RS-485 by RTS
4-Wire RS-485 by ADDC
2-Wire RS-485 by RTS
4-Wire RS-485 by ADDC
SW4
ON
ON
OFF
OFF
OFF
ON
Serial
DC-IN SW RESET 10BaseT
Ethernet
Top Panel
Front Panel
Rear Panel
*Reset Button—Press the Reset button continuously for:
•3 sec to erase the password
After 3 sec, the Ready LED will flash on/off every half second.
Release the reset button at this time to erase the password.
•10 sec to load factory defaults
After 10 sec, the Ready LED will flash on/off every half second.
Release the reset button at this time to load factory defaults.
LED Indicators (top panel)
LED Name LED Color LED Function
red Power is on
PWR off Power is off, or power error condition
exists
orange 10 Mbps Ethernet connection
Link off Ethernet cable is disconnected, or has
a short
green NPort Server system is ready
Ready off NPort Server has malfunctioned.
green Serial data is being transmitted.
Serial Tx off Serial data is not being transmitted
orange Serial data is being received.
Serial Rx off Serial data is not being received.
4. Hardware Installation Procedure
Placement Options
In addition to placing the
DE-211 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
DE-211 RS-232/422/485 Device Server
Express
PWR
SW1 Serial
Connection
RS-232
Console
Data
Comm
ON
OFF
SW2
ON
ON
ON
ON
OFF
OFF
Link
Ready
Serial Tx
Serial Rx
SW3
OFF
ON
OFF
ON
OFF
ON
Serial Interface Mode
RS-232
RS-422
4-Wire RS-485 by RTS
4-Wire RS-485 by ADDC
2-Wire RS-485 by RTS
4-Wire RS-485 by ADDC
SW4
ON
ON
OFF
OFF
OFF
ON
Serial
DC-IN SW RESET 10BaseT
Ethernet
DIN-Rail
DIP Switch Settings & Explanaiton
The top panel of DE-211 contains the following table, which describes
how to set up the serial port using the four DIP switches located on
DE-211’s rear panel.
SW1 Serial
Connection SW2 SW3 SW4 Serial Interface Mode
OFF OFF OFF RS-232
ON RS-232
Console OFF ON ON RS-422
ON OFF ON 4-Wire RS-485 by RTS
ON ON ON 4-Wire RS-485 ADDC
ON OFF OFF 2-wire RS-485 by RTS
OFF Data
Comm
ON ON OFF 2-wire RS-485 ADDC
Switch SW1 controls the function of the serial port. Note that after
changing the setting of SW1, DE-211 will reboot to initialize the new
setting. You must wait a few seconds for the green Ready light to blink
off and then on again, indicating that the function of the serial port has
been changed. Switches SW2, SW3, and SW4 control the serial port’s
data communication Interface Mode. (RTS stands for Ready To Send and
ADDC stands for Automatic Data Direction Control.)
Keep the following points in mind when setting the DIP switches:
yTo 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 position
ySome setup procedures can be carried out through a Telnet connection,
in which case data is transmitted through DE-211’s Ethernet port.
However, you must set SW1 to the OFF position to establish a Telnet
connection.
P/N: 1802002112400
