Moxa Technologies UC-7112 LX Plus Instructions for use

UC-7112 LX Plus UC-7112, UC-7110,
Hardware User’s Manual
Fifth Edition, June 2009
www.moxa.com/product
©2009 Moxa Inc. All rights reserved.
Reproduction without permission is prohibited.

UC-7112 LX Plus, UC-7112, UC-7110
Hardware User’s Manual
The software 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 ©2009 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
Trademarks
MOXA is a registered trademark of Moxa Inc.
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 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 made periodically to the
information in this manual to correct such errors, and these changes are incorporated into new editions of the
publication.
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www.moxa.com/support
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Table of Contents
Chapter 1 Introduction..................................................................................................1-1
Overview.................................................................................................................................. 1-2
Package Checklist.................................................................................................................... 1-2
Product Features ...................................................................................................................... 1-3
Product Specifications ............................................................................................................. 1-4
Hardware Specifications............................................................................................... 1-4
Software Specifications—μClinux (UC-7110 and UC-7112) ...................................... 1-5
Software Specifications—Linux (UC-7112 Plus) ........................................................ 1-6
Hardware Block Diagram........................................................................................................ 1-6
Chapter 2 Hardware Introduction.................................................................................2-1
Appearance .............................................................................................................................. 2-2
Dimensions .............................................................................................................................. 2-2
Panel Views.............................................................................................................................. 2-3
LED Indicators......................................................................................................................... 2-3
Internal SD Socket................................................................................................................... 2-4
Additional Functions................................................................................................................ 2-4
Reset Button ................................................................................................................. 2-4
Real Time Clock........................................................................................................... 2-5
Chapter 3 Hardware Connection Description .............................................................3-1
Wiring Requirements............................................................................................................... 3-2
Connecting the Power................................................................................................... 3-2
Grounding the UC-71xx Embedded Computer ............................................................ 3-2
Connecting Data Transmission Cables .................................................................................... 3-3
Connecting to the Network........................................................................................... 3-3
Connecting to a Serial Device ...................................................................................... 3-4
Serial Console Port....................................................................................................... 3-4

1
1
Chapter 1 Introduction
The Moxa UC-71xx series of embedded computers (UC-7110, UC-7112, and UC-7112 Plus) are
mini, RISC-based, box-type computers that feature dual 10/100 Mbps Ethernet ports, two
RS-232/422/485 serial ports, and an ARM9 processor. The computers come with Linux
pre-installed. In addition, the UC-7112 Plus and UC-7112 have an internal SD socket for storage
expansion to offer high performance communication with unlimited storage in a super-compact,
palm-size box. The UC-71xx series of embedded computers are the right solution for embedded
applications that call for a small computer, but that can store large amounts of memory and
provide good computing performance.
In this chapter, we cover the following topics:
Overview
Package Checklist
Product Features
Product Specifications
¾Hardware Specifications
¾Software Specifications—μClinux (UC-7110 and UC-7112)
¾Software Specifications—Linux (UC-7112 Plus)
Hardware Block Diagram

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Introduction
Overview
The UC-71xx series of mini, RISC-based communication platforms are ideal for embedded
applications. All three computers in the series (UC-7110, UC-7112, and UC-7112 Plus) come with
2 RS-232/422/485 serial ports and dual 10/100 Mbps Ethernet LAN ports to provide users with a
versatile communication platform.
The UC-71xx series computers use the MoxaARTARM9 192 MHz RISC CPU. Unlike the x86
CPU, which uses a CISC design, the ARM9’s RISC design architecture and modern
semiconductor technology provide these computers with a powerful computing engine and
communication functions, but without generating too much heat. The built-in NOR Flash ROM (8
MB for UC-7110/7112, 16 MB for UC-7112 Plus) and SDRAM (16 MB for UC-7110/7112, 32
MB for UC-7112 Plus) give you plenty of storage capacity, and the SD socket provides greater
flexibility for running various applications. The dual LAN ports built into the ARM9 allow the
UC-71xx computers to be used as communication platforms for basic data acquisition and protocol
conversion applications, and the two RS-232/422/485 serial ports allow you to connect a variety of
serial devices.
The UC-7110 and UC-7112 come with the µClinux operating system pre-installed, and the
UC-7112 Plus comes with the Linux operating system with MMU support pre-installed. Software
written for desktop PCs is easily ported to the UC-71xx computers with a GNU cross complier, so
that you will not need to spend time modifying existing software code. The operating system,
device drivers, and your own software can all be stored in the computers’Flash memory.
Package Checklist
The UC-71xx series currently includes four models:
Standard Operating Temperature Models (-10 to 60°C)
UC-7110-LX
Mini RISC-based Ready-to-Run Embedded Computer with 2 Serial Ports, Dual Ethernet, μClinux
OS.
UC-7112-LX
Mini RISC-based Ready-to-Run Embedded Computer with 2 Serial Ports, Dual Ethernet, SD slot,
μClinux OS.
UC-7112-LX Plus
Mini RISC-based Ready-to-Run Embedded Computer with 2 Serial Ports, Dual Ethernet, SD slot,
Linux OS.
Wide Operating Temperature Model (-40 to 75°C)
UC-7110-T-LX
Mini RISC-based Ready-to-Run Embedded Computer with 2 Serial Ports, Dual Ethernet, μClinux
OS, Wide Temperature.
1-2

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Introduction
Each model is shipped with the following items:
y1 UC-7110 or UC-7112 or UC-7112 Plus
yQuick Installation Guide
yDocument & Software CD
yEthernet Cable: RJ45 to RJ45 cross-over cable, 100 cm
yCBL-4PINDB9F-100: 4-pin header to DB9 female console port cable, 100 cm
yUniversal Power Adaptor
yProduct Warranty Statement
Optional Accessories
y35 mm DIN-Rail Mounting Kit (DK-35A)
NOTE: Please notify your sales representative if any of the above items are missing or damaged.
Product Features
The UC-71xx series computers have the following features:
yMoxa ART ARM9 32-bit 192 MHz processor
y16 or 32 MB RAM (about 12 MB of user programmable space)
y8 or 16 MB Flash ROM (about 4 MB of user programmable space)
yDual 10/100 Mbps Ethernet for network redundancy
y2 software-selectable RS-232/422/485 ports
ySerial port speed from 50 bps to 921.6 Kbps (non-standard baudrates supported)
ySD socket for storage expansion (UC-7112 and UC-7112 Plus only)
yBuilt-in RTC, Buzzer, WDT
yBuilt-in Linux Kernel 2.6 platform
y-40 to 75oC wide operating temperature model available (UC-7110 only)
yDIN-Rail or wall mountable
yRobust fanless design
1-3

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Introduction
Product Specifications
Hardware Specifications
System
CPU Moxa ART ARM9 32-bit RISC CPU, 192 MHz
DRAM UC-7110: 16 MB
UC-7112: 16 MB
UC-7112 Plus: 32 MB
Flash UC-7110: 8 MB
UC-7112: 8 MB
UC-7112 Plus: 16 MB
Storage Expansion UC-7110: None
UC-7112: SD slot ¯1
UC-7112 Plus: SD slot ¯1
Console port RS-232 ¯1 (TxD, RxD, GND), 4-pin header output, “115200, n, 8, 1”
Button Reset button ¯1, supports “Reset to Factory Default”
Other RTC, buzzer, Watchdog Timer
OS UC-7110: Built-in μClinux, based on Linux Kernel 2.6
UC-7112: Built-in μClinux, based on Linux Kernel 2.6
UC-7112 Plus: Built-in Embedded Linux with MMU support, based on
Linux Kernel 2.6
Network Communication
LAN 10/100 Mbps RJ45 ¯2, auto-sensing
Protection 1.5 KV built-in magnetic isolation protection
Serial Communication
Serial Port Software-selectable RS-232/422/485, DB9 male ¯2
Protection 15 KV built-in ESD protection for all signals
Data bits 5, 6, 7, 8
Stop bit(s) 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF, RS-485 ADDC™
Speed 50 bps to 921.6 Kbps; supporting, non-standard baudrates
LEDs
System Ready ¯1
LAN 10 M/Link¯2, 100 M/Link ¯2 (located on RJ45 connector)
Serial TxD ¯2, RxD ¯2
Power Requirements
Power Input 12 to 48 VDC
Power Consumption 340 mA @ 12 VDC, 4.5 W
Mechanical
Dimensions (W¯D¯H) 77 ¯111 ¯26 mm (3.03 ¯4.37 ¯1.02 in)
1-4

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Introduction
Weight 190 g
Construction Material aluminum, 1 mm
Mounting DIN-rail, Wall-mounting
Environment
Operating Temperature -10 to 60°C (14 to 140°F), 5 to 95% RH
-40 to 75°C (-40 to 167°F) for -T models
Storage Temperature -20 to 80°C (-4 to 176°F), 5 to 95% RH
-40 to 85°C (-40 to 185°F) for -T models
Anti-Vibration 1 g @ IEC-68-2-6, sine wave (resonance search), 5-500 Hz, 1 Oct/min, 1
cycle, 13 mins 17 sec per axis (UC-7110 only)
Regulatory Approvals
EMC FCC, CE (Class A)
FCC Part 15, CISPR 22 Class A
CE Class A: EN55022 Class A, EN61000-3-2 Class A,
EN61000-3-3, EN55024
Safety TUV: IEC/EN60950
UL/cUL: UL60950, CAN/CSA-C22.2 No. 60950-00
Other RoHS, CRoHS, WEEE
Warranty 5 years
Software Specifications—μClinux (UC-7110 and UC-7112)
Kernel Version: 2.6.19
Protocol Stacks: TCP, UDP, IPv4, SNMP V1, ICMP, ARP, HTTP, CHAP, PAP, DHCP,
NTP, NFS, SMTP, Telnet, FTP, PPP, PPPoE
File System: JFFS2 (on-board flash) for Kernel, Root File System (Read Only) and
User Directory (Read / Write)
System Utilities: msh, busybox, tinylogin, telnet, ftp
Supported Services and Daemons:
telnetd: Telnet Server daemon
ftpd: FTP server daemon
Boa: Web server daemon
pppd: dial in/out over serial port daemon & PPPoE
snmpd: snmpd agent daemon
inetd: TCP server manager program
Application Development Environment:
Moxa Linux API Library
Linux Tool Chain:
Arm-elf-gcc: C/C++ PC Cross Compiler
μClibc: POSIX Standard Library
Device Drivers: UART, RTC, Buzzer, SD Card
1-5

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Introduction
Software Specifications—Linux (UC-7112 Plus)
Kernel Version: 2.6.9
Boot Loader: Redboot
Protocol Stacks: TCP, UDP, IPv4, SNMP V1, ICMP, IGMP, ARP, HTTP, CHAP, PAP,
SSH 1.0/ 2.0, SSL, DHCP, NTP, NFS, SMTP, Telnet, FTP, PPP, PPPoE
File System: JFFS2 (on-board flash) for Kernel, Root File System (Read Only) and
User Directory (Read / Write)
System Utilities: bash, busybox, tinylogin, telnet, ftp, scp
Supported Services and Daemons:
telnetd: Telnet Server daemon
ftpd: FTP server daemon
sshd: Secure shell server
Apache: Web server daemon, supports PHP and XML
OpenVPN: Virtual private network service manager
iptables: Firewall service manager
pppd: dial in/out over serial port daemon & PPPoE
snmpd: snmpd agent daemon
inetd: TCP server manager program
Application Development Environment:
Moxa Linux API Library
Linux Tool Chain: Gcc, Glibc, GDB
Device Drivers: Watchdog Timer (WDT), UART, RTC, Buzzer, SD Card
Hardware Block Diagram
RS-232/422/485 RS-232
Ethernet
16 MB
SDRAM
MOXA ART CPU
32-bit ARM9
192 MHz
LAN 1
PHY
MAC
LAN 2
PHY
MAC
Power
Circuit
Watchdog
8 MB
Flash
RTC
UARTUARTUART
Console
Port
Serial
Port 2
Serial
Port 1
1-6

2
2
Chapter 2 Hardware Introduction
The UC-7110, UC-7112, and UC-7112 Plus are compact, rugged embedded computers designed
for industrial applications. The LED indicators on the computers’outer casing help you monitor
the performance of the computers, and assist in identifying trouble spots. The hardware platform is
both reliable and stable, and allows you to devote the bulk of your attention to developing your
own application. In this chapter, we cover the basic hardware of the UC-71xx series embedded
computers.
In this chapter, we cover the following topics:
Appearance
Dimensions
Panel Views
LED Indicators
Internal SD Socket
Additional Functions
¾Reset Button
¾Real Time Clock

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Introduction
Appearance
The front view of the UC-7112 is shown in the following figure. The UC-7110 and UC-7112 Plus
look the same, except that the UC-7110 does not have an internal SD slot.
Ethernet x 2
(10/100BaseTx)
RS-232
Console Terminal
Internal SD Slot for
Storage Expansion
(remove cover to access)
12 to48 VDC
Serial Port 2
(RS-232/422/485)
Serial Port 1
(RS-232/422/485)
P1 P2
TX
RX P1
P2
TX
RX
Ready
RESET
12-48V
LAN1
RS-232/422/485
Socket Inside
LAN2
UC-7112
Universal Communicator
Dimensions
The dimensions of the UC-7110, UC-7112, and UC-7112 Plus are exactly the same.
P1 P2
TX
RX P1
P2
TX
RX
Ready
V+ RESET
12-48V
LAN1
RS-232/422/485
LAN2
UC-7110
Universal Communicator
6 (0.24)
12.5 (0.49)
25 (0.98)
4 (0.16)
7 (0.28)
26 (1.02)
77 (3.03)
47.3 (1.56)
21.3
(0.8)
)13.4(111
88 (3.46)
100 (4.18)
unit = mm (inch)
2-2

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Introduction
Panel Views
The three main panel views of the UC-7110, UC-7112, and UC-7112 Plus are shown below:
P1 P2
TX
RX P1
P2
TX
RX
Ready
V+
12-48V LAN1 LAN2
UC-7110
Universal Communicator
RESET
RS-232/422/485
Top View
Bottom View
DB9 (male) Serial Ports
DIN-Rail
screw hole
Wallmount
screw hole
Front View
RJ45 10/100 Mbps Ethernet Ports
Reset Button
Terminal Block
Power Input
LED Indicators
The following table shows the functions of the five LED indicators located on the front panel of
the UC-71xx embedded computers.
LED Name LED Color LED Function
Ready Green Power is on and functioning normally.
Green Serial port 1/2 is transmitting data.P1/P2 (Tx)
Off Serial port 1/2 is not transmitting data.
Yellow Serial port 1/2 is receiving data.P1/P2 (Rx)
Off Serial port 1/2 is not receiving data.
2-3

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Introduction
Internal SD Socket
The UC-7112 and UC-7112 Plus have an internal SD socket for storage expansion. For the
UC-7112, a Secure Digital (SD) memory card compliant with the SD 1.0 standard can be used to
provide up to 1 GB of additional memory space. In addition, the UC-7112 Plus supports Secure
Digital High Capacity (SDHC) memory cards that are compliant with the SD 2.0 standard, and can
be used to provide up to 16 GB of additional memory space.
To install an SD card, first remove the outer cover of the embedded computer to access the SD slot.
The internal SD slot is located on the back of the bottom board, in the slot on the right side of the
UC-7112 and UC-7112 Plus, but lower than the cover screw. Plug the SD card directly into the
socket and remember to “push in” the SD card first if you want to remove it.
Additional Functions
Reset Button
Press the “RESET” button continuously for more than 5 seconds to load the factory default
configuration. After loading the factory defaults, the system will reboot automatically. The System
Ready LED will blink for the first 5 seconds. We recommend that you only use this function if the
software is not working properly. To reset the µClinux system software, always use the software
reboot command (reboot) to protect the integrity of the data being transmitted. The reset button is
NOT designed to hard reboot the UC-71xx series embedded computer.
ATTENTION
For the UC-7110-LX and UC-7112-LX, resetting the embedded computer to factory defaults will
NOT cause the user directory to be reformatted, and the user's data will NOT be deleted. The reset
button only causes a configuration file to be loaded. All files in the /etc directory will revert to
their factory defaults, but all other user data will remain intact in the Flash ROM.
For the UC-7112-LX Plus, resetting the embedded computer to factory defaults WILL cause the
user directory to be reformatted; the files in the /home directory will be deleted, and all files in the
/etc directory will revert to their factory defaults, but all other user data will remain intact in the
Flash ROM.
Please note that if there is a problem with the /etc directory, the embedded computer may be
unable to restore the factory default settings.
ATTENTION
This function only takes effect when the user directory is working correctly. If the user directory
has crashed, the kernel will automatically load the factory defaults.
2-4

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Introduction
Real Time Clock
The real time clock in the UC-71xx embedded computers is powered by a lithium battery. We
strongly recommend that you get help from Moxa’s technical support team to replace the lithium
battery. If the battery needs to be changed, contact the Moxa RMA service team for RMA service.
ATTENTION
The battery may explode if replaced by an incorrect type. To avoid this
p
otential danger, always be
sure to use the correct type of battery.
2-5

3
3
Chapter 3 Hardware Connection Description
In this chapter, we show how to connect the UC-71xx embedded computer to the network and to
various devices.
¾Connecting the Power
1xx Embedded Computer
ssion Cables
In this chapter, we cover the following topics:
Wiring Requirements
¾Grounding the UC-7
Connecting Data Transmi
¾Connecting to the Network
¾Connecting to a Serial Device
¾Serial Console Port

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Connection Description
Wiring Requirements
This section explains how to connect the UC-71xx embedded computers to serial devices.
You should heed the following safety precautions before installing any electronic device:
yUse separate paths for power wiring and wiring for 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.
yUse 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.
yIt is advisable to label the wiring to all devices in the system.
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or wiring your UC-71xx embedded
computer.
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 the UC-71xx embedded computer. When plugged in, the computer’s
internal components generate heat, and consequently the outer casing may feel hot to the touch.
Connecting the Power
Connect the “live-wire” end of the 12-48 VDC power adaptor to the UC-71xx’s terminal block. If
the power is supplied properly, the “Ready” LED will glow a solid green color after a 25 to 30
second delay.
Grounding the UC-71xx Embedded Computer
Grounding and wire routing help limit the effects of noise due to electromagnetic interference
(EMI). Run the ground wire from the ground screw to the grounding surface prior to connecting
devices.
3-2

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Connection Description
ATTENTION
This product should be mounted on a well-grounded mounting surface such as a metal panel.
V+V-
12-48V
SG
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 in the figure at the
left. Connect the SG wire to an appropriate
grounded metal surface.
Connecting Data Transmission Cables
This section describes how to connect the UC-71xx to the network, to serial devices, and to a
serial COM terminal.
Connecting to the Network
Connect one end of the Ethernet cable to the UC-71xx’s 10/100M Ethernet port, and the other end
of the cable to the Ethernet network. If the cable is properly connected, the UC-71xx will indicate
a valid connection to the Ethernet in the following ways:
yThe top-right LED on the connector glows a solid green when connected to a 100 Mbps
Ethernet network.
yThe top-left LED on the connector glows a solid orange when connected to a 10 Mbps
Ethernet network.
yThe LEDs will flash when Ethernet packets are being transmitted or received.
The 10/100 Mbps Ethernet LAN 1 and LAN 2 ports use 8-pin RJ45 connectors. Pinouts for these
ports are given in the following diagram.
8-pin RJ45
81
81
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 ---
5 ---
6 ERx-
7 ---
8 ---
3-3

UC-7112 LX Plus UC-7112, UC-7110 User’s Manual Hardware Connection Description
Connecting to a Serial Device
Connect the serial cable between the UC-71xx and the serial device(s).
The two serial ports (P1 and P2) use male DB9 connectors, and can be configured for
RS-232/422/485 by software. The pin assignments are shown in the following table:
Male DB9 Port
RS-232/422/485 Pinouts
12345
6789
Pin RS-232 RS-422 RS-485
(4-wire) RS-485 (2-wire)
1 DCD TxDA(-) TxDA(-) ---
2 RxD TxDB(+) TxDB(+) ---
3 TxD RxDB(+) RxDB(+) DataB(+)
4 DTR RxDA(-) RxDA(-) DataA(-)
5 GND GND GND GND
6 DSR --- --- ---
7 RTS --- --- ---
8 CTS --- --- ---
Serial Console Port
The serial console port is a 4-pin pin-header RS-232 port. It is designed for serial console
terminals, which are useful for identifying the UC-71xx’s boot up message.
Serial Console Port & Pinouts
Serial Console Cable
4
3
2
1
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
3-4