NPort 5400 Series 
Quick Installation Guide 
 
Fourth Edition, January 2007 
 
1. Overview 
Welcome to Moxa NPort 5400, a 4 port communication device that 
allows you to control RS-232 (for NPort 5410), RS-422/485 (for NPort 
5430/5430I) or RS-232/422/485 (for NPort 5450/5450I) serial devices 
over a TCP/IP based Ethernet. 
 
NPort 5400 Series is a MOXA Green Product. Moxa’s Green Products 
satisfy the RoHS directive of the European Parliament, and accordingly, 
do not contain cadmium and cadmium compounds, hexavalent chromium 
compounds, lead and lead compounds, mercury and mercury compounds, 
PBBs (polybrominated biphenyls), or PBDEs (polybrominated diphenyl 
ethers). 
 
2. Package Checklist 
Before installing NPort 5400, verify that the package contains the 
following items: 
 
  NPort Document & Software CD 
  NPort 5400 Series Quick Installation Guide 
 
Optional Accessories 
DK-35A 
Notify your sales representative if any of the above items is missing or 
damaged. 
 
3. Hardware Introduction 
As shown in the following figures, NPort 5410 has 4 Male DB9 ports, for 
the RS-232 interface, NPort 5430/5430I has 4 5-pin terminal blocks, for 
the RS-422/485 interface, and NPort 5450/5450I has 4 Male DB9 ports, 
for the RS-232/422/485 interface. 
1 NPort 5400 4-Port Serial Device Server 
For 35 mm DIN-Rail; includes 4 screws 
Product Warranty 
NPort 5410/5450/5450I 
Power input
RESET
LAN
V+ V-
RJ45 10/100 Mbps Ethernet port
Terminal Block power input 
5410
NP5410_61405
192.168.127.254
Port 1
RS-232
Port 2
RS-232
Port 3
RS-232
Port 4
RS-232
Serial Device Server
Indicator LEDs
Input buttons
LCM display panel
Male DB9 serial port
NPort 5430/5430I 
Power input
 
RESET
LAN
V+ V-
RJ45 10/100 Mbps Ethernet port
Terminal Block power input
5430
N P5430_61405
192.168.127.254
Port 1
RS-422/785
Port 2
RS-422/785
Port 3
RS-422/785
Port 4
RS-422/785
Serial Device Server
Indicator LEDs
Input buttons
LCM display panel
RS-422/485 Terminal Block
P/N: 1802054000300
T+ T- R+
D+
R-
D-
GND
T+ T- R+
D+
R-
D-
GND
T+ T- R+
D+
R-
D-
GND
T+ T- R+
D+
R-
D-
GND
Reset Button—Press the Reset button continuously for 5 sec to load 
factory defaults: Use a pointed object, such as a straightened paper clip or 
toothpick, to press the reset button. This will cause the Ready LED to 
blink on and off. The factory defaults will be loaded once the Ready LED 
stops blinking (after about 5 seconds). At this point, you should release 
the reset button. 
LED Indicators—NPort 5400’s top panel contains six LED indicators, 
as described in the following table. 
LED Name LED Color
LED Function 
red 
green 
off 
orange 
green 
off 
orange 
green 
off 
Ready 
Link 
P1, P2,
P3, P4 
Steady on:   Power is on and NPort is booting up. 
Blinking:    Indicates an IP conflict, or DHCP 
or BOOTP server did not respond 
properly. 
Steady on: Power is on and NPort is 
functioning normally. 
Blinking:   The NPort has been located by 
NPort Administrator’s Location 
function. 
Power is off, or power error condition exists. 
10 Mbps Ethernet connection. 
100 Mbps Ethernet connection. 
Ethernet cable is disconnected, or has a short. 
Serial port is receiving data. 
Serial port is transmitting data. 
No data is being transmitted or received through 
the serial port. 
6 
. 
4 
. 
 
4 
0 
7 
5 
. 
 
2 
 
5 
4 
2 
1 
1 
_ 
8 
1 
1 
5 
2 
LCM Display Panel—When the NPort 5400 unit is powered up, you will 
a see a display similar to: 
0 
N  P 
1 
9 
6 
 
 
This is where NP5410_61405 is the server’s name, and 192.168.127.254 
is the server’s IP address. 
LCM Panel Operation—There are four buttons on NPort 5400’s top 
panel used to operate the server’s LCM panel. Going from left to right, 
the buttons are: 
Button Action 
MENU Activates the main menu, or returns to a lower level. 
Scrolls up through a list of items shown on the LCM 
panel’s second line. 
Scrolls down through a list of items shown on the LCM 
panel’s second line. 
 
 
SEL  Selects the option listed on the LCM panel’s second line. 
Detailed LCM Panel Operating instructions can be found on the 
CD-ROM in the “NPort 5400 Series User’s Manual.” 
 
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4. Hardware Installation Procedure 
STEP 1: After removing NPort 5400 from the box, the first thing you 
should do is attach the power adaptor. 
STEP 2: Connect NPort 5400 to a network. Use a standard 
straight-through Ethernet cable to connect to a Hub or Switch. When 
setting up or testing NPort 5400, you might find it convenient to connect 
directly to your computer’s Ethernet port. In this case, use a cross-over 
Ethernet cable. 
STEP 3: Connect NPort 5400’s serial port to a serial device. 
STEP 4: Placement Options 
Wall or Cabinet Mounting 
The NPort 5400 comes with two metal attachment plates for attaching the 
embedded computer to a wall or the inside of a cabinet. First, use two 
screws per bracket to attach the brackets to the rear of the 5400. Next, use 
two screws per bracket to attach the 5400 to a wall or cabinet. 
The heads of the screws should be less than 6.0 mm in 
diameter, and the shafts should be less than 3.5 mm in 
diameter, as shown by the figure at the right. 
6.0 mm
3.5 mm
 
DIN-Rail Mounting 
DIN-rail attachments can be purchased separately to attach the product to 
a DIN-rail. When snapping the attachments to the DIN-rail, make sure 
that the stiff metal springs are at the top. 
Wall Mount 
DIN-Rail 
 
 
5. Pull High/low Resistors Setting for the RS-485 Port 
DIP switches on the bottom of NPort 5400 are used to set the pull 
high/low resistor values for each serial port. 
Pull High/low Resistors for the RS-485 Port 
8. Terminal Block Wiring—NPort 5430/5430I 
 
 
 
Default 
SW 
ON 
OFF 
1 
Pull High 
1KΩ 
150KΩ 
2 
Pull Low 
1KΩ 
150KΩ 
Terminator 
3 
1KΩ 
--- 
6. Software Installation Information 
To install NPort Administration Suite, insert the NPort Document & 
Software CD into your computer’s CD-ROM drive. Once the NPort 
Installation CD window opens, click on the Installation button, and then 
follow the instructions on the screen. 
To view detailed information about NPort Administration Suite, click 
on the Documents button, and then select “NPort 5400 Series User’s 
Manual” to open the pdf version of this user’s guide. 
7. Pin Assignments and Cable Wiring 
DB9 Male Port Pinouts   
Pin assignments apply to NPort 5410 (RS-232 only), 5450, and 5450I. 
2-wire 
RS-485 
4-wire RS-485 
DB9 Male 
RS-422/ 
TxD-(A) 
TxD+(B) 
RxD+(B) 
RxD-(A) 
GND 
--- 
--- 
--- 
--- 
--- 
--- 
Data+(B) 
Data-(A) 
GND 
--- 
--- 
--- 
--- 
Pin 
1 
2 
3 
4 
5 
6 
7 
8 
9 
RS-232 
DCD 
RxD 
TxD 
DTR 
GND 
DSR 
RTS 
CTS 
--- 
1
5
6
9
RS-232 Wiring 
DB9 Female to DB9 Male 
DB9 Female to DB25 Male 
 
9. Environmental Specifications 
Power requirements 
 
 
 
 
 
NPort 5410 
NPort 5430 
NPort 5430I 
NPort 5450 
NPort 5450I 
 
12 to 48 VDC, 350 mA at 12V (max.) 
12 to 48 VDC, 360 mA at 12V (max.) 
12 to 48 VDC, 585 mA at 12V (max) 
350 mA at 12V (max) 
554 mA at 12V (max) 
(must use Class 2 or LPS power supply) 
0 to 55◦C (32 to 131◦F) 
5 to 95% RH 
Operating temp. 
Operating humidity 
Dimensions (W×D×H)158 × 33 × 103 mm 
Surge protection 
Magnetic isolation 
Power line protection  4 KV Burst (EFT), EN61000-4-4 
6.22 × 1.3 × 4.06 inch 
15 KV ESD for serial port 
1.5 KV for Ethernet 
2 KV Surge, EN61000-4-5 
Regulatory approvals  FCC Class A, CE Class A, UL, CUL, TÜV 
 
ATTENTION 
There is a risk of explosion if the real-time clock battery is replaced with 
the incorrect battery type! 
 
Copyright © 2007 
Moxa Technologies Co., Ltd. 
All rights reserved. 
Reproduction without permission is prohibited. 
 
 
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Tel: 
Fax: 
+886-2-8919-1230 
+886-2-8919-1231 
 
Hwww.moxa.com 
Hsupport@moxa.com 
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