Moxa Technologies UC-8100-ME-T Series Instructions for use

UC-8100-ME-T Series Hardware User
Manual
Version 2.2, August 2022
www.moxa.com/product
© 2022 Moxa Inc. All rights reserved.

UC-8100-ME-T Series Hardware User 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
© 2022 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.
Technical Support Contact Information
www.moxa.com/support

Table of Contents
1. Introduction ................................................................................................................................... 4
Overview........................................................................................................................................ 4
Model Descriptions ........................................................................................................................... 4
Package Checklist ............................................................................................................................ 4
Product Features.............................................................................................................................. 4
Specifications .................................................................................................................................. 5
Hardware Block Diagram................................................................................................................... 5
2. Hardware Introduction .................................................................................................................... 6
Appearance..................................................................................................................................... 6
Dimensions [units: mm (in)] ....................................................................................................... 7
LED Indicators................................................................................................................................. 7
Default Programmable Button Operations............................................................................................. 8
Diagnosing Device and Subsystem Failures.................................................................................... 8
Reset to Factory Default.................................................................................................................... 9
Real-Time Clock............................................................................................................................... 9
Placement Options ..........................................................................................................................10
DIN-Rail Mounting....................................................................................................................10
Wall Mounting (Optional)...........................................................................................................11
3. Hardware Connection Description.................................................................................................. 12
Wiring Requirements .......................................................................................................................12
Connecting the Power...............................................................................................................13
Grounding the Unit...................................................................................................................13
Connecting to the Console Port..........................................................................................................14
Connecting to the Network ...............................................................................................................14
Connecting to a Serial Device............................................................................................................14
Inserting the SD and SIM Card..........................................................................................................15
USB Port .......................................................................................................................................15
Installing the Cellular Module ............................................................................................................16
A. Regulatory Approval Statements ................................................................................................... 22

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1. Introduction
The UC-8100-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-8100-ME-T to a variety of complex communications solutions.
Overview
The UC-8100-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-sc ale
deployments.
Model Descriptions
The UC-8100-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, 8 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, 8 GB eMMC flash, USB port, SD-card socket, and Debian
Arm
Package Checklist
Before installing the UC-8100-ME-T, verify that the package contains the following items:
•UC-8100-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

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Specifications
NOTE
The latest specifications for Moxa’s products can be found at https://www.moxa.com.
Hardware Block Diagram

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2. Hardware Introduction
The UC-8100-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-8100-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.
Appearance
Front View
Top View
Bottom View

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Dimensions [units: mm (in)]
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.

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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
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-8100-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

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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-8100-ME-
T.
ATTENTION
Reset to Default 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-8100-ME-T‘s boot storage will be erased when it is reset to the factory default
configuration.
Real-Time Clock
The UC-8100-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.
WARNING
There is a risk of explosion if the battery is replaced with an incorrect battery type.

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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.

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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.

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3. Hardware Connection Description
This section describes how to connect the UC-8100-ME-T to a network and connect various devices to the
UC-8100-ME-T.
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.

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Connecting the Power
Terminal Block
The UC-8100-ME-T has a 3-pin terminal block for a 12 to 36 VDC power input.
The figure shows 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.
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
show
n here. Connect the SG wire to an appropriate grounded metal surface.
ATTENTION
A shielded power cord 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.

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Connecting to the Console Port
The UC-8100-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
Rada
3
NC
4
GND
Connecting to the Network
Connect one end of the Ethernet cable to one of the UC-8100-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-8100-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 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.
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.
Connecting to a Serial Device
Use certified serial cables to connect the UC-8100-ME-T to serial devices. The serial ports of the UC-8100-
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

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Inserting the SD and SIM Card
The UC-8100-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-8100-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-8100-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.

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Installing the Cellular Module
The UC-8100-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.

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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.

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9. Remove the screw next to the socket and replace it with the bronze screw (in the package) as shown
below:
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.

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12. Mount the module cover on the cellular module and use screws on both sides to secure the cover.
13. Insert the module into the socket and secure it using a screw from the package.
14. Connect antenna cables to the cellular module. There are three antenna connectors on the cellular
module: W1 and W3 are for cellular antennas and W2 is for GPS antenna.

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15. Insert the antenna connectors through the antenna cable holes on the front panel of the cover as shown
below:
16. Secure the antenna connectors to the cover using a locking washer and nut as shown below:
17. Arrange the antenna cables and use a cable tie to attach the cables to the bronze screw. You may cut
the cable tie if it is too long.