Moxa Technologies UC-8112-ME-T-LX Instructions for use

UC-8112-ME-T Series Hardware
User’s Manual
Edition 2.1, February 2018
www.moxa.com/product
© 2018 Moxa Inc. All rights reserved.

UC-8112-ME-T Series 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
© 2018 Moxa Inc. All rights reserved.
Trademarks
The MOXA logo 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 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
Model Descriptions..............................................................................................................................1-2
Package Checklist...............................................................................................................................1-2
Product Features ................................................................................................................................1-2
Hardware Specifications ......................................................................................................................1-3
Hardware Block Diagram .....................................................................................................................1-4
2. Hardware Introduction...................................................................................................................... 2-1
Appearance........................................................................................................................................2-2
LED Indicators....................................................................................................................................2-3
Default Programmable Button Operations ..............................................................................................2-3
Diagnosing Device and Subsystem Failures.....................................................................................2-4
Reset to Factory Default ......................................................................................................................2-4
Real-Time Clock .................................................................................................................................2-4
Placement Options..............................................................................................................................2-5
DIN-Rail Mounting.......................................................................................................................2-5
Wall Mounting (Optional)..............................................................................................................2-6
3. Hardware Connection Description ..................................................................................................... 3-1
Wiring Requirements...........................................................................................................................3-2
Connecting the Power ..................................................................................................................3-2
Grounding the Unit......................................................................................................................3-2
Connecting to the Console Port.............................................................................................................3-3
Connecting to the Network...................................................................................................................3-3
Connecting to a Serial Device...............................................................................................................3-4
Inserting the SD and SIM Card.............................................................................................................3-4
USB Port............................................................................................................................................3-4
Installing the Cellular Module ...............................................................................................................3-5
A. Regulatory Approval Statements....................................................................................................... A-1

1
1. Introduction
The UC-8112-ME-T series computing platform is designed for embedded data acquisition applications. The
computer comes with two RS- 232/422/485 serial ports and dual 10/100 Mbps Ethernet LAN ports, as well as
a Mini PCIe socket to support cellular modules. These versatile communication capabilities let users efficiently
adapt the UC-8112-ME-T to a variety of complex communications solutions.
The following topics are covered in this chapter:

Overview

Model Descriptions

Package Checklist

Product Features

Hardware Specifications

Hardware Block Diagram

UC-8112-ME-T Series Hardware Introduction
1-2
Overview
The UC-8112-ME-T is built around an ARMv7 Cortex-A8 RISC processor that has been optimized for use in
energy monitoring systems, but is widely applicable to a variety of industrial solutions. With flexible interfacing
options, this compact embedded computer is a reliable and secure gateway for data acquisition and data
processing at field sites as well as a useful communication platform for many other large-scale deployments.
Model Descriptions
The UC-8112-ME-T series includes the following models:
•UC-8112-ME-T-LX: RISC-based platform with 1 GHz CPU, 512 MB RAM, Mini PCIe socket for cellular
connectivity, 2 Ethernet ports, 2 serial ports, 4 GB eMMC flash, USB port, SD-card socket, and Debian ARM
•UC-8112-ME-T-LX1: RISC-based platform with 1 GHz CPU, 1 GB RAM, Mini PCIe socket for cellular
connectivity, 2 Ethernet ports, 2 serial ports, 4 GB eMMC flash, USB port, SD-card socket, and Debian ARM
•UC-8112-ME-T-LX-US-LTE: RISC-based platform with 1 GHz CPU, 512 MB RAM, 4 GB eMMC flash, Mini
PCIe socket for cellular connectivity (with cellular module for North America built in), 2 Ethernet ports, 2
serial ports, USB port, and Debian ARM
•UC-8112-ME-T-US-LTE-LX1: RISC-based platform with 1 GHz CPU, 1 GB RAM, 4 GB eMMC flash, Mini
PCIe socket for cellular connectivity (with cellular module for North America built in), 2 Ethernet ports, 2
serial ports, USB port, and Debian ARM
Package Checklist
Before installing the UC-8112-ME-T, verify that the package contains the following items:
•UC-8112-ME-T embedded computer
•Power jack
•Quick installation guide (printed)
•Warranty card
NOTE: Notify your sales representative if any of the above items are missing or damaged.
Product Features
•ARMv7 Cortex-A8 1000 MHz processor
•Dual auto-sensing 10/100 Mbps Ethernet ports
•SD socket for storage expansion and OS installation
•Programmable LEDs and a programmable button for easy installation and maintenance
•Mini PCIe socket for cellular module
•-40°C to 70°C wide temperature range with LTE enabled

UC-8112-ME-T Series Hardware Introduction
1-3
Hardware Specifications
Computer
CPU:
ARMv7 Cortex-A8 1000 MHz
USB:
USB 2.0 host x 1 (type A connector)
DRAM:
512 MB DDR3 SDRAM
Storage
Storage Expansion:
• SDHC/SDXC socket for storing OS and storage
expansion
•
4 GB eMMC flash with OS pre-installed
Ethernet Interface
LAN:
2 auto-sensing 10/100 Mbps ports (RJ45)
Magnetic Isolation Protection:
1.5 kV built-in
Serial Interface
Serial Standards:
2 RS-232/422/485 ports, software-selectable (5-pin terminal block connector)
Console Port:
RS-232 (TxD, RxD, GND), 4-pin pin header output (115200, n, 8, 1)
Serial Communication Parameters
Data Bits:
5, 6, 7, 8
Stop Bits:
1, 1.5, 2
Parity:
None, Even, Odd, Space, Mark
Flow Control:
XON/XOFF, ADDC® (automatic data direction control) for RS-485
Baudrate:
Max. 921600 bps
Serial Signals
RS
-232: TxD, RxD, RTS, CTS, GND
RS
-422: TxD+, TxD-, RxD+, RxD-, GND
RS
-485-4w: TxD+, TxD-, RxD+, RxD-, GND
RS
-485-2w: Data+, Data-, GND
LEDs
System:
Power x 1, USB x 1, SD x 1, and signal strength x 3
LAN:
10M/100M on connector
Programmable:
Diagnosis x 3
Switches and Buttons
Push Button:
Initially configured to return a diagnostic report, and to reset the device to factory defaults
Physical Characteristics
Housing:
Metal
Weight:
•
UC-8112-ME-T-LX: 530 g (1.18 lb)
•
UC-8112-ME-T-LX-US: 590 g (1.31 lb)
Dimensions:
141 x 119.9 x 36 mm (5.56 x 4.72 x 1.42 in)
Mounting:
DIN rail, wall mount (optional)
Environmental Limits
Operating Temperature:
Wide Temp. Models:
-40 to 85°C (-40 to 185°F)
Wide Temp. models (with LTE accessory):
-40 to 70°C (-40 to 158°F)
Storage Temperature:
-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity:
5 to 95% (non-condensing)
Anti
-Vibration: 2 Grms @ IEC 60068-2-64, random wave, 5-
500 Hz, 1 hr per axis (without any USB devices
attached)
Anti
-Shock: 20 g @ IEC 60068-2-27, half sine wave, 30 ms

UC-8112-ME-T Series Hardware Introduction
1-4
Power Requirements
Input Voltage:
12 to 36 VDC (3-pin terminal block, V+, V-, SG)
Input Current:
500 mA @ 12 VDC
Power Consumption:
6 W (without cellular module and external USB device attached)
Standards and Certifications
Safety:
UL 60950-1
EMC: EN 55032/24
Green Product:
RoHS, CRoHS, WEEE
Reliability
Alert Tools:
External RTC (real-time clock)
Automatic Reboot Trigger:
External WDT (watchdog timer)
Warranty
Warranty Period: 5 years
Details:
See www.moxa.com/warranty
Hardware Block Diagram

2
2. Hardware Introduction
The UC-8112-ME-T embedded computers are compact and rugged making them suitable for industrial
applications. The LED indicators help in monitoring performance and troubleshooting issues. The multiple ports
provided on the computer can be used to connect to a variety of devices. The UC-8112-ME-T comes with a
reliable and stable hardware platform that lets you devote the bulk of your time to application development. In
this chapter, we provide basic information about the embedded computer’s hardware and its various
components.
The following topics are covered in this chapter:

Appearance

LED Indicators

Default Programmable Button Operations
Diagnosing Device and Subsystem Failures

Reset to Factory Default

Real-Time Clock

Placement Options
DIN-Rail Mounting
Wall Mounting (Optional)

UC-8112-ME-T Series Hardware Hardware Introduction
2-2
Appearance
Front View Top View Bottom View
Dimensions [units: mm (in)]

UC-8112-ME-T Series Hardware Hardware Introduction
2-3
LED Indicators
Refer to the following table for information about each LED.
LED Name Color Function
USB Green Steady On USB device is connected and working normally.
Off USB device is not connected.
SD Green Steady On SD Card inserted and working normally.
Off SD Card is not detected.
Power Green Power is on and the computer is working normally.
Off Power is off.
LAN1/2 (On RJ45
connector)
Green Steady On 100 Mbps Ethernet link
Blinking Data transmission in progress.
Yellow Steady On 10 Mbps Ethernet link
Blinking Data transmission in progress.
Off Ethernet is not connected.
Wireless Signal
Strength
Green
Yellow
Red
The number of glowing LEDs indicates the signal strength
3 (Green + Yellow + Red): Excellent
2 (Yellow + Red) : Good
1 (Red) : Poor
Off Wireless module is not detected.
Programmable
Diagnostic LEDs
Green
Yellow
Red
These 3 LEDs are programmable. Refer to the “Default
Programmable Button Operations” section for details.
Default Programmable Button Operations
The function button (FN) located on the top panel is used to diagnose device failure or to perform firmware
restoration. After pressing the button, release it at the appropriate time to enter the required mode to either
troubleshoot issues in your computer or restore your computer to the default configuration. Refer to the
following illustration for detailed instructions:
The LED indicators behave differently when diagnosing a device failure compared to performing a firmware
restoration. See the following table for details:
Status Red LED Yellow LED Green LED
Executing diagnostics program Blinking Off On
Resetting to default configuration
Blinking
Blinking
On
RED LED
Blinking
GREEN LED
On
RED LED
Blinking
GREEN LED
On NO ACTION
0 2 4 7 8
Release the button during
this time to diagnose
device failure
Time (s)
Release the button during this
time to perform restoration
Button pressed

UC-8112-ME-T Series Hardware Hardware Introduction
2-4
Diagnosing Device and Subsystem Failures
The red LED will start blinking once you press the function button (FN). Keep the button pressed until the green
LED is lit for the first time and then release the button to enter diagnostic mode to check which peripherals are
available on the UC-8112-ME-T-LX. When the diagnostic program is running, the red LED will blink.
Status Red LED Yellow LED Green LED
Diagnostics program is executing Blinking Off On
The following two tables describe the diagnostics results related to hardware defects and system operation.
Hardware Defects
If you observe any of these hardware issues, contact Moxa Support for further instructions.
Status Red LED Yellow LED Green LED
UART1 device issue On On Off
UART2 device issue On On Blinking
LAN 1 device issue On Off Off
LAN 2 device issue On Off Blinking
Button device issue On Blinking Off
TPM device issue On Blinking Blinking
LED device issue On Off Off
System Operation
If you observe any of the following issues, check the item indicated by the LEDs.
Status Red LED Yellow LED Green LED
CPU usage (over 90%) Blinking On Off
RAM usage (over 90%) Off On Off
Disk usage (over 90%) Off On Blinking
File system corrupted Blinking On Blinking
Reset to Factory Default
Press and hold the function button (FN)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 Power 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. The Reset to Default functionality is not designed to hard reboot the UC-8112-ME-T.
ATTENTION
Reset to D
efault will erase all the data stored on the boot storage
Please back up your files before resetting the system to
the factory default configuration
. All the data stored
in the
UC-8112-ME-T‘s boot storage will be erased when it is reset to the factory default configuration.
Real-Time Clock
The UC-8112-ME-T’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 the Moxa RMA service team.

UC-8112-ME-T Series Hardware Hardware Introduction
2-5
WARNING
There is a risk of explosion if the battery is replaced
with an incorrect battery type.
Placement Options
There are two sliders on the back of the unit for DIN rail and wall mounting.
DIN-Rail Mounting
1. The DIN-rail mounting kit is mounted by default as shown in the figure below.
NOTE
Test the screw head and shank size by inserting the screw into one of the keyhole shaped apertures of the
wall
-mounting plates before attaching the plate to the wall.
2. Pull down the bottom slider of the DIN-rail bracket located at the back of the unit
3. Insert the top of the DIN rail into the slot just below the upper hook of the DIN-rail bracket.
4. Latch the unit firmly on to the DIN rail as shown in the illustrations below.
5. Push the slider back into place.

UC-8112-ME-T Series Hardware Hardware Introduction
2-6
Wall Mounting (Optional)
1. Remove the four screws on the side-panel silver cover of the device
2. Place the wall-mount brackets on the silver cover and fasten the screws as shown below. Use only the
screws provided in the wall-mounting kit package.
ATTENTION
The wall
-mounting kit is not included in the package and must be purchased separately.

3
3. Hardware Connection Description
This section describes how to connect the UC-8112-ME-T to a network and connect various devices to the
UC-8112-ME-T.
The following topics are covered in this chapter:

Wiring Requirements
Connecting the Power
Grounding the Unit

Connecting to the Console Port

Connecting to the Network

Connecting to a Serial Device

Inserting the SD and SIM Card

USB Port

Installing the Cellular Module

UC-8112-ME-T Series Hardware Hardware Connection Description
3-2
Wiring Requirements
In this section, we describe how to connect various devices to the embedded computer. You must pay attention
to the following common safety precautions, before proceeding with the installation of any electronic device:
•Use 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 the wires for signal or communication and power wiring in the same wire conduit. To
avoid interference, wires with different signal characteristics should be routed separately.
•You 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.
•Keep input wiring and output wiring separate.
•We strongly advise that you label wiring to all devices in the system for easy identification.
ATTENTION
Safety First!
Be sure to disconnect the
power cord before installing and/or wiring the computer.
Electrical Current
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 unit. When the unit is
plugged in, the internal components generate heat, and
consequently the
outer casing may be hot to touch by hand.
Connecting the Power
Terminal Block
The
UC-8112-ME-T has a 3-pin terminal block for a 12 to 36 VDC power input.
The figure show
s how the power input interface connects to external power sources. If the
power is properly supplied,
the Power LED will light up. The Power
LED will glow a solid green
color when
the operating system is ready (it may take 30 to 60 seconds for the operating
system to boot up)
.
ATTENTION
This product is intended to be supplied by a Listed Power
Supply Unit that is rated to deliver 12 to 36 VDC
at
a minimum of
500 mA @ 12 VDCC.
Grounding the Unit
Grounding and wire routing help 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 to the
computer.

UC-8112-ME-T Series Hardware Hardware Connection Description
3-3
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
bottom
contact of the 3
-pin power terminal block connector when viewed from the angle sho
wn
here. Connect the SG wire to an appropriate grounded metal surface.
ATTENTION
A shielded power cor
d is required to meet FCC emission limits and also to prevent interference with
nearby
radio and television reception. It
is essential that only the supplied power cord be used.
You are cautioned that changes or modifications not expressly approved by the party responsible for
compliance could void your authority to operate the equipment.
Connecting to the Console Port
The UC-8112-ME-T is provided with a 4-pin pin-header RS-232 console port, which is a located on the top panel.
This port is designed for connecting serial console terminals, which you can use to view the boot up messages,
and to troubleshoot when the system does not boot up.
Serial Console Port & Pinouts Serial Console Cable
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
Connecting to the Network
Connect one end of the Ethernet cable to one of the UC-8112-ME-T’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, the UC-8112-ME-T will
indicate a valid connection to the Ethernet in the following ways:
The LED indicator in the lower right corner glows
a solid g
reen 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.
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 –
5 –
6 ERx-
7 –
8 –
The LED indicator in
the upper right corner glows 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.

UC-8112-ME-T Series Hardware Hardware Connection Description
3-4
Connecting to a Serial Device
Use certified serial cables to connect the UC-8112-ME-T to serial devices. The serial ports of the UC-8112-ME-T
use the 5-pin terminal block. The ports can be configured by software for RS-232, RS-422, or 2-wire RS-485.
The pin assignments are shown in the following table:
Terminal Block
RS
-232/422/485 Pinouts
Pin RS-232 RS-422 RS-485
1 TXD TXD+ –
2 RXD TXD- –
3 RTS RXD+ D+
4 CTS RXD- D-
5 GND GND GND
Inserting the SD and SIM Card
The UC-8112-ME-T comes with an SD-card socket for storage expansion, and a SIM-card socket that can be
used to install a SIM card for cellular communication. The SD card/SIM card sockets are located on the lower
part of the front panel. To install the cards, remove the screw and the protection cover to access the sockets,
and then plug the SD card and the SIM card into the sockets directly. Remember to push in on the SD card or
SIM card first if you want to remove them.
The SD card will be mounted at: /mnt/sd
ATTENTION
The
UC-8112-ME-T does not support SD-card hot swap or PnP (Plug and Play) functionality. You must
disconnect the
power source to the computer before you insert or remove the SD card.
USB Port
The UC-8112-ME-T is provided with 1 USB 2.0 full speed port (OHCI), type A connector, which supports a
keyboard or mouse, as well as an external flash disk for storing data.

UC-8112-ME-T Series Hardware Hardware Connection Description
3-5
Installing the Cellular Module
The UC-8112-ME-T is provided with a PCIe socket for installing a cellular module. To install the cellular module,
do the following:
1. Remove the four screws on the DIN-rail mounting
kit. 2. Remove the two screws on the rear panel.
3. Remove the four screws on the silver cover on the
right panel and take off the cover. 4. Remove the screw on metal cover.
5. Remove the three screws on the top panel. 6. Remove the two screws on the bottom panel.

UC-8112-ME-T Series Hardware Hardware Connection Description
3-6
7. Check the contents of the cellular module package. The package should contain the items shown below:
8. Remove the metal cover of the computer and locate the cellular module socket.
9. Remove the screw next to the socket and replace it with the bronze screw (in the package) as shown below:

UC-8112-ME-T Series Hardware Hardware Connection Description
3-7
10. Attach one thermal pad to the cellular module cover and the other thermal pad to the module pad.
11. Attach the cellular module to the module pad.
12. Mount the module cover on the cellular module and use screws on both sides to secure the cover.