UC-8112-ME-T Series
Quick Installation Guide

Version 2.2, January 2021

Technical Support Contact Informationwww.moxa.com/support

 2021 Moxa Inc. All rights reserved.

P/N: 1802081120022*1802081120022*

Overview
The UC-8112-ME-T computing platform is designed for embedded dataacquisition applications. The UC-8112-ME-T computer comes with one ortwo 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. Theseversatile communication capabilities let users efficiently adapt theUC-8112-ME-T to a variety of complex communications solutions.

Package Checklist
Before installing the UC-8112-ME-T, verify that the package contains thefollowing items:
••••
•
•

UC-8112-ME-T embedded computer
Power jack3-pin terminal block for power
5-pin terminal block for UART x 2
Quick installation guide (printed)
Warranty card

IMPORTANT: Notify your sales representative if any of the above items
are missing or damaged.

UC-8112-ME-T Panel Layout
The following figures show the panel layouts of the UC-8112-ME-T:
Top Panel View

-2-Bottom Panel View

Front Panel ViewLED Indicators
LED Name

Color

Function
Steady On USB device is connected andworking normally.
USBGreenOff
USB device is not connected.
Steady On SD Card inserted and working
normally.
SDGreenOffSD card is not detected.
Power is on and the computer is working
Greennormally.
PowerOffPower is off.
Steady On 100 Mbps Ethernet link
GreenBlinking
Data transmission in progress
LAN1/LAN 2
Steady On 10 Mbps Ethernet link
Yellow(RJ45Blinking
Data transmission in progressconnector)
Ethernet is not connected.
Off-3-LED Name

Color

Function
The number of glowing LEDs indicates theGreen signal strength.
Wireless
Yellow 3 (Green + Yellow + Red): Excellent
SignalRed 2 (Yellow + Red): Good
Strength
1 (Red): Poor
Off
Wireless module is not detected.
These three LEDs are programmable. For
Programm
Green details, refer to the “Default Programmableable
Yellow Button Operation" section in the Hardware
diagnostic
Red User’s Manual.
LEDs

Installing the UC-8112-ME-T
Two sliders are provided at the back of the unit for DIN-rail mounting orwall mounting.
DIN-Rail Mounting
1.

The DIN-rail mounting kit is mounted by default as shown in thefigure below:

2.

Pull down the bottom slider of the DIN-rail bracket located at theback of the unit
Insert the top of the DIN rail into the slot just below the upper hookof the DIN-rail bracket.
Latch the unit firmly on to the DIN rail as shown in the illustrations
below.
Push the slider back into place.

3.
4.
5.

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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 thescrews as shown below. Use only the screws provided in thewall-mounting kit package.

ATTENTION
The wall-mounting kit is not included in the package and must bepurchased separately.

Connector Description
Power Connector
Connect the power jack (in the package) to the UC-8112-ME-T’s DC
terminal block (located on the top panel), and then connect the power
adapter. It takes about 30 seconds for the system to boot up. Once thesystem is ready, the Power LED will light up.

WARNINGEXPLOSION HAZARD!
Do not disconnect equipment unless the power has been
removed or the area is known to be non-hazardous.
Grounding the UC-8112-ME-TGrounding and wire routing help limit the effects of noise due toelectromagnetic interference (EMI).
SG: The Shielded Ground (sometimes calledProtected Ground) contact is the top contact ofthe 3-pin power terminal block connector whenviewed from the angle shown here. Connect theSG wire to an appropriate grounded metal
surface.
Ethernet Ports
The two 10/100 Mbps Ethernet ports (LAN 1 and LAN 2) use RJ45
connectors.

-5-Pin12
3
6SignalETx+
ETxERx+ERx-

Serial Ports
The two serial ports (P1 and P2) use terminal connectors. Each port canbe configured by software for RS-232, RS-422, or RS-485. The pin
assignments for the ports are shown in the following table:
Pin
1
2
3
45RS-232
TXD
RXD
RTS
CTS
GND

RS-422TXD+
TXDRXD+RXDGND

RS-485––D+
DGND

SD/SIM Card Sockets
The UC-8112-ME-T comes with an SD socket for storage expansion, anda SIM card socket for cellular communication. The SD card/SIM card
sockets are located at the lower part on the front panel. To install thecards, remove the screw and the protection cover to access the sockets,and then insert the SD card or the SIM card into the sockets directly. Youwill hear a click when the cards are in place. To remove the cards, push
the cards in before releasing them.

Console PortThe console port is an RS-232 port that can be connected to with a 4-pin
pin header cable. You can use this port for debugging or firmware
upgrade. Note that the cable is not included in the package.
Pin
12
3
4Signal
TxD
RxD
NC
GND

USB
The USB 2.0 port is located at the lower part of the front panel andsupports a USB storage device driver. By default, the USB storage ismounted at /mnt/usbstorage.
Real-time Clock
The real-time clock in the UC-8112-ME is powered by a lithium battery.
We strongly recommend that you do not replace the lithium battery
without the help of a Moxa support engineer. If you need to change thebattery, contact the Moxa RMA service team.
-6-

ATTENTION
There is a risk of explosion if the battery is replaced with anincorrect type of battery.
Cellular Module
The UC-8112-ME-T comes with a built-in PCIe socket for wirelesscommunication. To install a cellular module, do the following:
1.

Remove the four screws on theDIN-rail mounting bracket anddetach the bracket from theunit.

2.

Remove the two screws on
the rear panel.

3.

Remove the four screws on thesilver cover on the right panel
and remove the cover.

4.

Remove the screw on themetal cover.

5.

Remove the three screws on
the top panel.

6.

Remove the two screws on
the bottom panel.

-7-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:

-8-

10.

Attach one thermal pad to the cellular module cover and the otherthermal 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.

-9-

13.

Insert the module into the socket and secure it using a screw fromthe package.

14.

Connect antenna cables to the cellular module. There are threeantenna connectors on the cellular module: W1 and W3 are forcellular antennas and W2 is for GPS antenna.

15.

Insert the antenna connectors through the antenna cable holes on
the front panel of the cover as shown below:- 10 -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.

18.

Plug the antenna onto the connector.

19.

Replace the cover of the computer and fasten the screws to secure
the cover.

- 11 -Accessing the UC-8112-ME-T Using a PC
You can use a PC to access the UC-8112-ME-T by one of the following
methods:
A. Through the serial console port with the following settings:
Baudrate=115200 bps, Parity=None, Data bits=8, Stop bits =1,Flow Control=None

ATTENTION
Remember to choose the “VT100” terminal type. Use the console
cable to connect a PC to the UC-8112-ME-T's serial console port
B. Using SSH over the network. Refer to the following IP addresses andlogin information:
LAN 1
LAN 2

Default IP Address
192.168.3.127
192.168.4.127

Netmask255.255.255.0
255.255.255.0

Login: moxa
Password: moxa

ATTENTION
These devices are open-type devices that are to be installed in anenclosure with tool removable cover or door, suitable for theenvironment.
This equipment is suitable for use in Class I, Division 2, Groups A,B, C, and D or non-hazardous locations only.

WARNINGThe GPS antenna connection is not to be used in hazardouslocations.

C1D2 Specifications
1.
2.

Temperature Code (T-code): T4
Max Ambient : 85°C

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