Moxa Technologies UC-7400 User manual

UC-7400 Hardware User’s Manual
First Edition, March 2006
www.moxa.com/product
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UC-7400 Hardware User’s Manual
The Hardware described in this manual is furnished under a license agreement and may be used only in
accordance with the terms of that agreement.
Copyright Notice
Copyright ©2006 Moxa Systems Co., Ltd.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
MOXA is a registered trademark of The Moxa Group.
All other trademarks or registered marks in this manual belong to their respective manufacturers.
Disclaimer
Information in this document is subject to change without notice and does not represent a commitment on the
part of Moxa.
Moxa provides this document “as is,” without warranty of any kind, either expressed or implied, including, but
not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this
manual, or to the products and/or the programs described in this manual, at any time.
Information provided in this manual is intended to be accurate and reliable. However, Moxa Technologies
assumes no responsibility for its use, or for any infringements on the rights of third parties that may result from
its use.
This product might include unintentional technical or typographical errors. Changes are periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the
publication.

Table of Contents
Chapter 1 Introduction..................................................................................................1-1
Overview.................................................................................................................................. 1-2
Package Checklist....................................................................................................... 1-2
Product Features......................................................................................................... 1-3
Product Hardware Specifications ............................................................................... 1-4
Hardware Introduction............................................................................................................. 1-5
Appearance and Dimensions...................................................................................... 1-5
Hardware Block Diagram......................................................................................... 1-12
LED Indicators......................................................................................................... 1-13
Reset-type Buttons ................................................................................................... 1-13
Real Time Clock....................................................................................................... 1-14
Placement Options................................................................................................................. 1-14
Wall or Cabinet ........................................................................................................ 1-14
DIN-Rail Mounting.................................................................................................. 1-15
Hardware Connection Description......................................................................................... 1-16
Wiring Requirements ............................................................................................... 1-16
Connecting the Power .............................................................................................. 1-16
Grounding UC-7400................................................................................................. 1-16
Connecting to the Network....................................................................................... 1-17
Connecting to a Serial Device.................................................................................. 1-17
Connecting to the Console Port................................................................................ 1-18
PCMCIA................................................................................................................... 1-18
CompactFlash........................................................................................................... 1-18
USB.......................................................................................................................... 1-18
DI/DO....................................................................................................................... 1-18
Appendix A Service Information.....................................................................................A-1
MOXA Internet Services......................................................................................................... A-2
Problem Report Form .............................................................................................................A-3
Product Return Procedure....................................................................................................... A-4

1
1
Chapter 1 Introduction
Thank you for purchasing the MOXA UC-7400 RISC-based ready-to-run embedded computer.
The product’s features include eight RS-232/422/485 serial ports, dual 10/100 Mbps Ethernet ports,
8 digital input channels and 8 digital output channels, a PCMCIA interface for wireless LAN
communication, and CompactFlash and USB ports for mass storage disk expansion. All these
make the UC-7400 series ideal for your embedded applications.
This manual introduces the hardware that makes the UC-7400 series embedded computers tick.
After a brief introduction of the hardware features, this manual focuses on installation and
hardware configuration with device interfaces.
The following topics are covered in this chapter:
Overview
¾Package Checklist
¾Product Features
¾Product Hardware Specifications
Hardware Introduction
¾Appearance and Dimensions
¾Hardware Block Diagram
¾LED Indicators
¾Reset-type Buttons
¾Real Time Clock
Placement Options
¾Wall or Cabinet
¾DIN-Rail Mounting
Hardware Connection Description
¾Wiring Requirements
¾Connecting the Power
¾Grounding UC-7400
¾Connecting to the Network
¾Connecting to a Serial Device
¾Connecting to the Console Port
¾PCMCIA
¾CompactFlash
¾USB
¾DI/DO

UC-7400 Hardware User’s Manual Introduction
1-2
Overview
The MOXA UC-7400 Series (herein after referred to as UC-7400) includes UC-7420, UC-7410,
UC-7408, and UC-7402. These RISC-based ready-to-run embedded computers are ideal for
embedded applications. UC-7400 series feature 8 RS-232/422/485 serial ports, dual 10/100 Mbps
Ethernet ports, 8 digital input channels and 8 digital output channels, a PCMCIA interface for
wireless LAN communication, a CompactFlash slot for flash disk expansion, and USB ports for
adding additional memory (such as a USB Flash disk).
The UC-7400 series use an Intel XScale IXP-422 266 MHz RISC CPU. Unlike the X86 CPU,
which uses a CISC design, the IXP-422’s RISC design architecture and modern semiconductor
technology provide UC-7400 with a powerful computing engine and communication functions, but
without generating a lot of heat. The built-in 32 MB NOR Flash ROM and 128 MB SDRAM give
you enough memory to run your application software directly on UC-7400. As the dual LAN ports
are built right into the IXP-422 CPU, UC-7400 makes an ideal communication platform for
Network Security applications. If your application requires placing UC-7400 at a site that is not
located near an Ethernet LAN connection, you can connect to the network by using UC-7400’s
PCMCIA port to attach a wireless LAN card.
Package Checklist
All models of the UC-7400 series are shipped with the following items:
y1 UC-7400 Series Embedded Computer
yWall-Mounting Kit
yDIN-Rail Mounting Kit
yQuick Installation Guide
yDocument & Software CD
yCross-over Ethernet cable
yCBL-RJ45M9-150: 150 cm, 8-pin RJ45 to Male DB9 serial port cable (Except UC-7402)
yCBL-RJ45F9-150: 150 cm, 8-pin RJ45 to Female DB9 console port cable
yUniversal Power Adapter
yProduct Warranty Booklet
NOTE: Notify your sales representative if any of the above items is missing or damaged.

UC-7400 Hardware User’s Manual Introduction
1-3
Product Features
yIntel XScale IXP-422 266 MHz Processor
yOn-board 128 MB RAM, 32 MB Flash ROM
yEight RS-232/422/485 serial ports (UC-7420/7410/7408 only)
y8 digital input channels and 8 digital output channels (UC-7408 only)
yDual 10/100 Mbps Ethernet
yUSB 2.0 host for mass storage devices (UC-7420 only)
yPCMCIA, wireless LAN expansion (supports 802.11b/802.11g)
yCompactFlash for storage expansion (UC-7420/7408/7402 only)
yLCM display and keypad for HMI (UC-7420/7410 only)
yReady-to-run Linux / WinCE 5.0 .NET platform
yDIN-Rail or wall mounting installation
yRobust, fanless design
UC-7420/7410 UC-7408 UC-7402

UC-7400 Hardware User’s Manual Introduction
1-4
Product Hardware Specifications
UC-7420 UC-7410 UC-7408 UC-7402
CPU Intel Xscale
IXP-422 266MHz Intel Xscale IXP-422 266MHz Intel Xscale IXP-422 266MHz Intel Xscale IXP-422 266MHz
RAM 128 MB 128 MB 128 MB 128 MB
Flash 32 MB 32 MB 32 MB 32 MB
LAN Auto-sensing 10/100 Mbps x 2 with built-in 1.5 KV magnetic isolation protection
RJ45 Connector
Serial Port RS-232/422/485 ×8
RJ45 Connector RS-232/422/485 ×8 RJ45 Connector RS-232/422/485 ×8 RJ45 Connector N/A
Serial Protection 15 KV ESD for all signals N/A
Data Bits 5, 6, 7, 8 N/A
Stop Bits 1, 1.5, 2 N/A
Parity none, even, odd, space, mark N/A
Flow Control RTC/CTS, XON/XOFF, RS-485 ADDC™ N/A
Speed 50 bps to 921.6 Kbps N/A
Serial Console RS-232 ×1
RJ45 Connector RS-232 ×1 RJ45 Connector RS-232 ×1 RJ45 Connector RS-232 ×1 RJ45 Connector
DI/DO N/A DI ×8, DO ×8 N/A N/A
USB 2.0 Hosts 2 N/A N/A N/A
USB 1.1 Client 1* 1* 1* 1*
PCMCIA Cardbus x 1** N/A Cardbus x 1** Cardbus x 1**
Storage
Expansion CompactFlash ×1*** N/A CompactFlash ×
1*** CompactFlash ×1***
LCM 128 ×64 dots 128 ×64 dots N/A N/A
Keypad 5 5 N/A N/A
Real Time Clock Yes Yes Yes Yes
Buzzer Yes Yes Yes Yes
Rest Button HW Reset ×1
Reset to Default ×1 HW Reset ×1 Reset to Default ×1 HW Reset ×1 Reset to Default ×1 HW Reset ×1 Reset to Default ×1
Power Input 12 to 48 VDC 12 to 48 VDC 12 to 48 VDC 12 to 48 VDC
Power
Consumption 12W 10W 8W 7W
Dimension
(W x D x H) 197 ×125 ×44 mm 197 ×125 ×44 mm 197 ×125 ×44 mm 197 ×125 ×44 mm
Weights 875 g 810 g 870 g 830 g
Operating
temperature -10 to 60°C, (14 to 140°F), 5 to 95% RH
Storage
temperature -20 to 80°C, (-4 to 176°F), 5 to 95% RH
Regulatory
Approvals EMC: CE Class A, FCC Class A
Safety: UL, cUL, TÜV
Warranty 5 years 5 years 5 years 5 years
* USB Client function is reserved for future enhancement
** PCMCIA is designed for 802.11b/g wireless LAN card expansion
*** CompactFlash is designed for Flash memory card or Microdrive

UC-7400 Hardware User’s Manual Introduction
1-5
Hardware Introduction
Appearance and Dimensions
Appearance
UC-7420 Rear View
DC 12-48V USB
LAN1 LAN2 Console
V+ V-
PCMCIA
CF
12-48 VDC
Power Input
CF x 1
PCMCIA x 1
10/100 Mbps Ethernet x 2
USB 2.0 Host x 2,
AType Connector
USB 1.1 Client x 1,
miniB Connector
RS-232
PPP/Console
UC-7420 Top View
Graphics LCM
128 x 64 Dots
5 Buttons
UC-7420 Front View
Reset
P1
RS-232/422/485
P2 P3 P4 P5 P6 P7 P8 Reset to
default
RJ45 RS-232/422/485
Connectors x 8
Reset to Default
Hardware Reset

UC-7400 Hardware User’s Manual Introduction
1-6
UC-7410 Rear View
DC 12-48V LAN1 LAN2 Console
V+ V-
12-48 VDC
Power Input 10/100 Mbps Ethernet x 2
USB 1.1 Client x 1,
miniB Connector
RS-232
PPP/Console
UC-7410 Top View
Graphics LCM
128 x 64 Dots
5 Buttons
UC-7410 Front View
Reset
P1
RS-232/422/485
P2 P3 P4 P5 P6 P7 P8 Reset to
default
RJ45 RS-232/422/485
Connectors x 8
Reset to Default
Hardware Reset

UC-7400 Hardware User’s Manual Introduction
1-7
UC-7408 Rear View
DC 12-48V LAN1 LAN2 Console
V+ V-
PCMCIA
CF
12-48 VDC
Power Input
CF x 1
PCMCIA x 1
10/100 Mbps Ethernet x 2
USB 1.1 Client x 1,
miniB Connector
RS-232
PPP/Console
UC-7408 Top View
UC-7408 Front View
Reset
P1
RS-232/422/485
P2 P3 P4 P5 P6 P7 P8
Reset to
Default
D/O D/I
RJ45 RS-232/422/485
Connectors x 8
1 2 3 5 64 7 8 1 2 3 5 64 7 8
Reset to Default
8-ch Digital Output 8-ch Digital Input
Hardware Reset

UC-7400 Hardware User’s Manual Introduction
1-8
UC-7402 Rear View
DC 12-48V LAN1 LAN2 Console
V+ V-
PCMCIA
CF
12-48 VDC
Power Input
CF x 1
PCMCIA x 1
10/100 Mbps Ethernet x 2
USB 1.1 Client x 1,
miniB Connector
RS-232
PPP/Console
UC-7402 Top View
UC-7402 Front View
Reset
Reset to Default
Hardware Reset
Reset to
Default

UC-7400 Hardware User’s Manual Introduction
1-9
Dimensions
UC-7420/7410
197 mm [7.76"]
125 mm [4.92"]
44 mm
[1.73"]

UC-7400 Hardware User’s Manual Introduction
1-10
UC-7408
197 mm [7.76"]
125 mm [4.92"]
44 mm
[1.73"]

UC-7400 Hardware User’s Manual Introduction
1-11
UC-7402
197 mm [7.76"]
125 mm [4.92"]
44 mm
[1.73"]

UC-7400 Hardware User’s Manual Introduction
1-12
Hardware Block Diagram
The following block diagram shows the layout of UC-7420 internal components.
The following block diagram shows the layout of UC-7410 internal components.
Moxa UART ASIC
PCI Bus
USB
Client Console LAN2 LAN1
RS-232/422/485
RS-232
Ethernet
Power
circuit
Power
Xscale IXP-422 266 MHz
32 MB Flash
128 MB SDRAM
LCM Display
& Keypad
7 85 61 2 3 4
PHY PHY
RTC

UC-7400 Hardware User’s Manual Introduction
1-13
The following block diagram shows the layout of UC-7408’s internal components.
PCMCIA &
CompactFlash Console
PHYPHY
PCI Bus
RTC
Decoder
12 3 4 5 6 7 8
Moxa UART ASIC
USB
Client
PCI to cardbus
Bridge
Xscale IXP-422 266 MHz
32 MB Flash
128 MB SDRAM
RS-232
Power
Power
circuit
RS-232/422/485
Ethernet
LAN2 LAN1
D/I x 8 D/O x 8
The following block diagram shows the layout of UC-7402’s internal components.
PCMCIA &
CompactFlash Console
PHYPHY
PCI Bus
RTC
USB
Client
PCI to cardbus
Bridge
Xscale IXP-422 266 MHz
32 MB Flash
128 MB SDRAM
RS-232
Power
Power
circuit
Ethernet
LAN2 LAN1
LED Indicators
UC-7420/7410 /7408 have 12 LED indicators on the top panel. UC-7402 has only 4 LED
indicators (no serial port indicator) on the top panel. Refer to the following table for information
about each LED.
LED Name Color Meaning
Ready Green Power is ON, and system is ready (after booting up)
Yellow 10 Mbps Ethernet connection
LAN1, LAN2 Green 100 Mbps Ethernet connection
Yellow Console port is receiving RX data from the serial device.
Console Green Console port is transmitting TX data to the serial device.
Yellow Serial port is receiving RX data from the serial device.P1, P2, P3, P4,
P5, P6, P7, P8 Green Serial port is transmitting TX data to the serial device.
Reset-type Buttons
UC-7400 has two reset-type buttons. The button labeled Reset has the same effect as switching off
the power and then switching the power back on. The button labeled Reset to default returns
UC-7400 to the factory default parameter configuration.

UC-7400 Hardware User’s Manual Introduction
1-14
Reset Button
Pressing the Reset button initiates a hardware reboot. The button plays the same role as a desktop
PC’s reset button.
In normal use, you should NOT use the Reset Button. You should only use this function if the
software is not working properly. To reset an embedded linux system, always use the software
reboot command />reboot to protect the integrity of data being transmitted or processed.
Reset to default Button
Press the Reset to default button continuously for at least 5 seconds to load the factory default
configuration. After the factory default configuration has been loaded, the system will reboot
automatically. The Ready LED will blink on and off for the first 5 seconds, and then maintain a
steady glow once the system has rebooted.
We recommend that you only use this function if the software is not working properly and you
want to load factory default settings. To reset an embedded linux system, always use the software
reboot command />reboot to protect the integrity of data being transmitted or processed. The
Reset to default button is not designed to hard reboot UC-7400.
ATTENTION
Reset to default preserves user’s data
The Reset to default button will NOT format the user directory and erase the user’s data.
Pressing the Reset to default button will only load the configuration file. All files in the /etc
directory will revert to their factory defaults, but other User Data will still exist in the Flash
ROM.
“Reset to Default” is not supported by UC-7420/7410 hardware versions V1.0
The Reset to default button is not supported by UC-7420/7410 hardware version V1.0. You can
identify the hardware version from UC-7420/7410’s lower label. You need to contact MOXA to
determine the product’s hardware version. When contacting our customer support team, you will
need to provide the product’s Serial Number (S/N) that is found on UC-7420/7410’s lower label.
Real Time Clock
UC-7400’s real time clock is powered by a lithium battery. We strongly recommend that you do
not replace the lithium battery without help from a qualified MOXA support engineer. If you need
to change the battery, contact MOXA RMA service team.
WARNING
There is a risk of explosion if the battery is replaced by an incorrect type.
Placement Options
Wall or Cabinet
The two metal brackets that come standard with UC-7400 are used to attach UC-7400 to a wall, or
the inside of a cabinet. First, use two screws per bracket to attach the brackets to the bottom of
UC-7400 (Fig. A). Next, use two screws per bracket to attach the UC-7400 to a wall or cabinet
(Fig. B).

UC-7400 Hardware User’s Manual Introduction
1-15
Figure A: UC-7420/7410 Universal Communicator—Wall Mounting Brackets (bottom view)
Figure B: UC-7420/7410 Universal Communicator—Wall Mounting Brackets (top view)
DIN-Rail Mounting
The aluminum DIN-Rail attachment plate is included with the package. If you need to reattach the
DIN-Rail attachment plate to UC-7400, make sure the stiff metal spring is situated towards the top,
as shown by the following figures.
STEP1: Insert the top of the DIN-Rail
into the slot just below the stiff metal
spring.
STEP2: The DIN-Rail attachment unit
will snap into place as shown.
metal
spring
DIN-Rail
metal
spring
DIN-Rail
To remove UC-7400 from the DIN-Rail, simply reverse Steps 1 and 2.

UC-7400 Hardware User’s Manual Introduction
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Hardware Connection Description
This section describes how to connect UC-7420/7410 to serial devices for first time testing
purposes. We cover Wiring Requirements, Connecting the Power, Grounding UC-7400,
Connecting to the Network, Connecting to a Serial Device, Connecting to the Console Port,
PCMCIA, CompactFlash,USB,and DI/DO.
Wiring Requirements
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or wiring your UC-7400.
Wiring Caution!
Calculate the maximum possible current in each power wire and common wire. Observe all
electrical codes dictating the maximum current allowable for each wire size.
If the current goes above the maximum ratings, the wiring could overheat, causing serious
damage to your equipment.
Temperature Caution!
Be careful when handling UC-7400. When plugged in, UC-7400’s internal components generate
heat, and consequently the outer casing may feel hot to the touch.
You should also observe the following common wiring rules:
yUse separate paths to route wiring for power and devices. If power wiring and device wiring
paths must cross, make sure the wires are perpendicular at the intersection point.
NOTE: Do not run signal or communication wiring and power wiring in the same wire
conduit. To avoid interference, wires with different signal characteristics should be routed
separately.
yYou can use the type of signal transmitted through a wire to determine which wires should be
kept separate. The rule of thumb is that wiring that shares similar electrical characteristics can
be bundled together.
yKeep input wiring and output wiring separate.
yWhere necessary, it is strongly advised that you label wiring to all devices in the system.
Connecting the Power
Connect the 12 to 48 VDC power line with UC-7400’s terminal block. If the power is properly
supplied, the Ready LED will illuminate with a solid green color after 30 to 60 seconds have
passed.
Grounding UC-7400
Grounding and wire routing helps limit the effects of noise due to electromagnetic interference
(EMI). Run the ground connection from the ground screw to the grounding surface prior to
connecting devices.

UC-7400 Hardware User’s Manual Introduction
1-17
ATTENTION
This product is intended to be mounted to a well-grounded mounting surface, such as a metal
panel.
SG: The Shielded Ground (sometimes called Protected Ground) contact is
the left most contact of the 3-pin power terminal block connector
when viewed from the angle shown here. Connect the SG wire to an
appropriate grounded metal surface.
Connecting to the Network
Connect one end of the Ethernet cable to one of UC-7400’s 10/100M Ethernet ports (8-pin RJ45)
and the other end of the cable to the Ethernet network. If the cable is properly connected,
UC-7420/7410 will indicate a valid connection to the Ethernet in the following ways:
18
The lower right corner LED indicator maintains a
solid green color when the cable is properly
connected to a 100 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets
are being transmitted or received.
18
The lower left corner LED indicator maintains a
solid orange color when the cable is properly
connected to a 10 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets
are being transmitted or received.
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 ---
5 ---
6 ERx-
7 ---
8 ---
Connecting to a Serial Device
Use properly wired serial cables to connect UC-7420/7410/7408 to serial devices.
UC-7420/7410/7408’s serial ports (P1 to P8) use 8-pin RJ45 connectors. The ports can be
configured by software for RS-232, RS-422, or 2-wire RS-485. The precise pin assignments are
shown in the following table:
18
Pin RS-232 RS-422 RS-485
1 DSR --- ---
2 RTS TXD+ ---
3 GND GND GND
4 TXD TXD- ---
5 RXD RXD+ Data+
6 DCD RXD- Data-
7 CTS --- ---
8 DTR --- ---