Moxa Technologies UC-7112 Instructions for use

UC-7112-LX Plus/UC-7112/UC-7110
Hardware User’s Manual
Edition 7.0, February 2017
www.moxa.com/product
© 2017 Moxa Inc. All rights reserved.

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
© 2017 Moxa Inc. All rights reserved.
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All other trademarks or registered marks in this manual belong to their respective manufacturers.
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Information in this document is subject to change without notice and does not represent a commitment on the part of
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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 periodically made to the
information herein to correct such errors, and these changes are incorporated into new editions of the publication.
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Table of Contents
1. Introduction...................................................................................................................................... 1-1
Overview...........................................................................................................................................1-2
Package Checklist...............................................................................................................................1-2
Product Features ................................................................................................................................1-3
Product Specifications .........................................................................................................................1-3
Hardware Specifications...............................................................................................................1-3
Hardware Block Diagram .....................................................................................................................1-5
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 ..........................................................................................................................2-4
3. Hardware Connection Description..................................................................................................... 3-1
Wiring Requirements...........................................................................................................................3-2
Connecting the Power ..................................................................................................................3-2
Grounding the UC-71xx Embedded Computers................................................................................3-2
Connecting Data Transmission Cables ...................................................................................................3-3
Connecting to the Network ...........................................................................................................3-3
Connecting to a Serial Device .......................................................................................................3-3
Serial Console Port ......................................................................................................................3-4
Installing a Secure Digital (SD) Memory Card.........................................................................................3-4

1
1. Introduction
The Moxa UC-7110/7112 series of embedded computers are 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-7110/7112 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.
The following topics are covered in this chapter:

Overview

Package Checklist

Product Features

Product Specifications
Hardware Specifications

Hardware Block Diagram

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Introduction
1-2
Overview
The UC-7110/7112 series of 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-7110/7112 series computers use the Moxa ART ARM9 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-7110/7112 series currently includes four models:
Standard Operating Temperature Models (-10 to 60°C)
UC-7110-LX
Ready-to-run embedded RISC computing platform with 2 Serial Ports, dual eEthernet, μClinux OS.
UC-7112-LX
Ready-to-run embedded RISC computing platform with 2 Serial Ports, dual eEthernet, SD slot, μClinux OS.
UC-7112-LX Plus
Ready-to-run embedded RISC computing platform with 2 Serial Ports, dual eEthernet, SD slot, Linux OS.
Wide Operating Temperature Model (-40 to 75°C)
UC-7110-T-LX
Ready-to-run embedded RISC computing platform with 2 Serial Ports, dual eEthernet, μClinux OS, Wide
Temperature.
Each model is shipped with the following items:
•1 UC-7110 or UC-7112 or UC-7112 Plus
•Quick installation guide (printed)
•Document & software CD
•Ethernet Cable: RJ45 to RJ45 cross-over cable, 100 cm
•CBL-4PINDB9F-100: 4-pin header to DB9 female console port cable, 100 cm
•Universal Power Adaptor
•Warranty card
Optional Accessories
•35 mm DIN-Rail Mounting Kit (DK-35A)
NOTE: Please notify your sales representative if any of the above items are missing or damaged.

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Introduction
1-3
Product Features
The UC-7110/7112 series computers have the following features:
•Moxa ART ARM9 32-bit 192 MHz processor
•16 or 32 MB RAM (about 12 MB of user programmable space)
•8 or 16 MB Flash ROM (about 4 MB of user programmable space)
•Dual 10/100 Mbps Ethernet for network redundancy
•2 software-selectable RS-232/422/485 ports
•Serial port speed from 50 bps to 921.6 Kbps (non-standard baudrates supported)
•SD socket for storage expansion (UC-7112 and UC-7112 Plus only)
•Built-in RTC, Buzzer, WDT
•Built-in Linux Kernel 2.6 platform
•-40 to 75°C wide operating temperature model available (UC-7110 only)
•DIN-Rail or wall mountable
•Robust fanless design
Product Specifications
Hardware Specifications
Computer
CPU:
MOXA ART ARM9 32-bit RISC CPU, 192 MHz
OS (pre
-installed): μClinux or Linux
DRAM:
UC
-7110/7112: 16 MB
UC
-7112 Plus: 32 MB onboard
Flash:
UC
-7110/7112: 8 MB onboard
UC
-7112 Plus: 16 MB onboard
Storage
Storage Expansion:
SD slot (UC-7112/UC-7112 Plus only)
Ethernet Interface
LAN:
Auto-sensing 10/100 Mbps (RJ45) 2 ports
Magnetic Isolation Protection:
1.5 KV built-in
Serial Interface
Serial Standards:
RS-232/422/485 software-selectable (DB9 male) 2 ports
ESD Protection:
15 KV ESD for all signals
Console Port:
RS-232 (TxD, RxD, GND): 3-wire pin-header
Serial Communication Parameters
Data Bits:
5, 6, 7, 8
Stop Bits:
1, 1.5, 2
Parity:
None, Even, Odd, Space, Mark
Flow Control:
RTS/CTS, XON/XOFF, ADDC® (automatic data direction control) for RS-485
Baudrate:
50 bps to 921.6 Kbps (supports non-standard baudrates; see user's manual for details)
Serial Signals
RS
-232: TxD, RxD, DTR, DSR, RTS, CTS, DCD, GND
RS
-422: TxD+, TxD-, RxD+, RxD-, GND
RS
-485-4w: TxD+, TxD-, RxD+, RxD-, GND
RS
-485-2w: Data+, Data-, GND

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Introduction
1-4
LEDs
System:
Ready
LAN:
LED located on the RJ45 connector: 10M/Link x 2, 100M/Link x 2
Serial:
TxD x 2, RxD x 2
Physical Characteristics
Housing:
Aluminum (1 mm)
Weight:
190 g
Dimensions:
77 x 111 x 26 mm (3.03 x 4.37 x 1.02 in)
Mounting:
DIN-Rail, wall
Environmental Limits
Operating Temperature:
Standard Models:
-10 to 60°C (14 to 140°F)
Wide Temp. Models:
-40 to 75°C (-40 to 167°F)
Storage Temperature:
Standard Models:
-20 to 80°C (-4 to 176°F)
Wide Temp. Models:
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidit
y: 5 to 95% (non-condensing)
Anti
-Vibration: 1 g @ IEC-68-2-6, sine wave (resonance search), 5-500 Hz, 1 Oct/min, 1 cycle,
13 min 17 sec
per axis (UC
-7110 only)
Power Requirements
Input Voltage:
12 to 48 VDC
Power Consumption:
4.5 W
• 170 mA @ 24 VDC
• 340 mA @ 12 VDC
Standards and Certifications
Safety:
UC-7110/7112: UL 60950-1, CSA C22.2 No. 60950-1-03, EN 60950-1
EMC:
EN 55032 Class A, EN 61000-3-2 Class A, EN 61000-3-3, EN 55024, FCC Part 15 Subpart B Class A
Green Product:
RoHS, CRoHS, WEEE
Reliability
Alert Tools:
Built-in buzzer and RTC (real-time clock)
Automatic Reboot Trigger:
Built-in WDT (watchdog timer)
MTBF (mean time between failures):
• UC
-7110: 149,414 hrs
• UC
-7112: 148,980 hrs
Warranty
Warranty Period:
5 years
Note:
The Hardware Specifications apply to the embedded computer unit itself, but not to accessories. In
particular, the wide temperature specification does not apply to accessories such as the power adaptor and
cables.

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Introduction
1-5
Hardware Block Diagram
UC-7110/7112-LX
UC-7112-LX Plus

2
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 their performance, and assist
in identifying trouble spots. The hardware platform is both reliable and stable, and is an ideal solution for
adapting to custom applications. In this chapter, we cover the basic hardware of the UC-71xx series embedded
computers.
The following topics are covered in this chapter:

Appearance

Dimensions

Panel Views

LED Indicators

Internal SD Socket

Additional Functions
Reset Button
Real Time Clock

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Introduction
2-2
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.
Dimensions
The dimensions of the UC-7110, UC-7112, and UC-7112 Plus are exactly the same.

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Introduction
2-3
Panel Views
LED Indicators
The following table is the key to 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.
P1/P2 (Tx) Green Serial port 1/2 is transmitting data.
Off Serial port 1/2 is not transmitting data.
P1/P2 (Rx) Yellow Serial port 1/2 is receiving data.
Off Serial port 1/2 is not receiving data.

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Introduction
2-4
Internal SD Socket
The UC-7112 and UC-7112 Plus have an internal SD socket for storage expansion that accepts Secure Digital
(SDHC) SD 2.0 memory cards, for up to 16 GB of additional memory in the UC-7112 Plus, or 32 GB in the
UC-7112.
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-7110/7112 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 e
mbedded computer may be
unable to restore
the factory default settings.
ATTENTION
This function only take
s effect when the user directory is working correctly. If the user directory has cras
hed,
the
kernel will automatically load the factory defaults.
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 potential danger, always b
e sure to use
the correct type of battery.

3
3. Hardware Connection Description
In this chapter, we show how to connect the UC-71xx embedded computer to the network and to various
devices.
The following topics are covered in this chapter:

Wiring Requirements
Connecting the Power
Grounding the UC-71xx Embedded Computers

Connecting Data Transmission Cables
Connecting to the Network
Connecting to a Serial Device
Serial Console Port

Installing a Secure Digital (SD) Memory Card

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Connection Description
3-2
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:
•Use 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.
•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.
•Keep input wiring and output wiring separate.
•It is advisable to label the wiring to all devices in the system.
ATTENTION
Safety First!
Be sure to disconnect the powe
r 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 Computers
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.
ATTENTION
This product s
hould be mounted on 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
in the figure at the left
. Connect
the SG wire to an appropriate grounded metal surface.

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Connection Description
3-3
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:
•The top-right LED on the connector glows a solid green when connected to a 100 Mbps Ethernet network.
•The top-left LED on the connector glows a solid orange when connected to a 10 Mbps Ethernet network.
•The 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
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 –
5 –
6 ERx-
7 –
8 –
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
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 – – –

UC-7112-LX Plus/UC-7112/UC-7110 Hardware Hardware Connection Description
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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
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
Installing a Secure Digital (SD) Memory Card
To install an SD memory for the UC-7112/7112 Plus, follow these steps.
1. Remove two screws on each side of the computer; also remove the four screws beside the serial ports on
the bottom panel of the computer. Remove the outer cover of the computer.
2. The SD slot is located at the right side of the computer. Insert the SD memory card into the slot. To
remove the SD memory card, simply push the card.
3. Replace the outer cover of the computer, and fasten all screws to complete.