Moxa Technologies UC-7122 Instructions for use

UC-7122/7124 Hardware User’s Manual
Edition 5.0, March 2017
www.moxa.com/product
© 2017 Moxa Inc. All rights reserved.

UC-7122/7124 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.
Trademarks
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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
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
Package Checklist...............................................................................................................................1-2
Product Features ................................................................................................................................1-3
Product Hardware Specifications...........................................................................................................1-3
Hardware Block Diagrams....................................................................................................................1-5
UC-7122 ....................................................................................................................................1-5
UC-7124 ....................................................................................................................................1-6
2. Hardware Introduction ..................................................................................................................... 2-1
Appearance........................................................................................................................................2-2
UC-7122 ....................................................................................................................................2-2
UC-7124 ....................................................................................................................................2-2
Dimensions........................................................................................................................................2-3
UC-7122 ....................................................................................................................................2-3
UC-7124 ....................................................................................................................................2-4
LED Indicators....................................................................................................................................2-4
Reset Button......................................................................................................................................2-5
Real Time Clock..................................................................................................................................2-5
3. Hardware Connection Description..................................................................................................... 3-1
Installing the UC-7122/7124................................................................................................................3-2
Wall or Cabinet Mounting .............................................................................................................3-2
DIN-Rail Mounting.......................................................................................................................3-2
Wiring Requirements...........................................................................................................................3-2
Connecting the Power ..................................................................................................................3-3
Grounding the Unit......................................................................................................................3-3
Connecting Data Transmission Cables ...................................................................................................3-4
Connecting to the Network ...........................................................................................................3-4
Connecting to a Serial Device .......................................................................................................3-4
Connecting to the Serial Console Port ............................................................................................3-5
Installing an SD Card for Storage Expansion ..........................................................................................3-5
USB Port............................................................................................................................................3-5

1
1. Introduction
The UC-7122/7124 Series of mini size RISC-based ready-to-run embedded computers come with the WinCE
operating system pre-installed. The embedded computers have dual 10/100 Mbps Ethernet ports and 2 or 4
RS-232/422/485 serial ports in an ARM9 box. In addition, the UC-7122 and UC-7124 have an internal SD
socket and one USB 2.0 host port for storage expansion, to provide high performance communication and
unlimited storage in a super compact, palm-size box. The UC-7122 and UC-7124 are the right solutions for
embedded applications that use a lot of memory, but that must be housed in a small physical space without
sacrificing performance.
The following topics are covered in this chapter:

Overview

Package Checklist

Product Features

Product Hardware Specifications

Hardware Block Diagrams
UC-7122
UC-7124

UC-7122/7124 Hardware Introduction
1-2
Overview
The UC-7122/7124 embedded computers come with 2 or 4 RS-232/422/485 serial ports and dual 10/100 Mbps
Ethernet LAN ports to provide users with a versatile communication platform, making these RISC-based
embedded computers ideal for your embedded applications.
The UC-7122/7124 embedded computers use the Cirrus Logic EP9302 ARM9 200 MHz RISC CPU. Unlike the
X86 CPU, which uses a CISC design, the ARM9’s RISC design architecture and modern semiconductor
technology provide the UC-7122/7124 with a powerful computing engine and communication functions, but
without generating too much heat. Moreover, the built-in 16 MB NOR Flash ROM and 32 MB SDRAM give you
enough storage capacity to run applications on the UC-7122/7124. The additional SD socket provides the
flexibility for storage expansion, and the dual LAN ports built into the ARM9 make the UC-7122/7124 ideal
communication platforms for simple data acquisition and protocol conversion applications. In addition, the
RS-232/422/485 serial ports allow you to connect a variety of serial devices. Taken together, these features
ensure that the UC-7122/7124 embedded computers are convenient and powerful central control units for
industrial applications, such as data acquisition, remote device control and monitoring, and protocol
conversion.
Package Checklist
UC-7124-CE
Mini RISC-based, Ready-to-Run Embedded Computer with Dual LANs, 4 Serial Ports, SD, USB, WinCE 5.0
UC-7122-CE
Mini RISC-based, Ready-to-Run Embedded Computer with Dual LANs, 2 Serial Ports, SD, USB, WinCE 5.0
Each model is shipped with the following items:
•1 UC-7122/7124 embedded computer
•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
•Document & Software CD
•Quick installation guide (printed)
•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-7122/7124 Hardware Introduction
1-3
Product Features
The UC-7122/7124 embedded computers have the following features:
•Cirrus Logic EP9302 ARM9 32-bit 200 MHz processor
•32 MB on-board RAM
•16 MB built-in flash memory
•RS-232/422/485 serial ports with software selectable interface
•Baudrates between 50 bps and 921.6Kbps; supports non-standard baudrates
•Dual 10/100 M Ethernet for backup networking
•SD card slot for storage expansion
•LED indicators for status, serial transmission
•Ready-to-run WinCE platform
•Easy DIN-rail or wall mounting
•Fanless design for increased ruggedness
•-40 to 75°C wide temperature models available
Product Hardware Specifications
Computer
CPU:
Cirrus EP9302 ARM9 CPU, 200 MHz
USB:
USB 2.0 hosts x 1, type A connector
DRAM:
DDR2 SDRAM, 32 MB
Flash:
NOR Flash, 16 MB
OS (pre
-installed): Windows CE 5.0
Storage
Storage Expansion:
SD slot
Ethernet Interface
LAN:
Auto-sensing 10/100 Mbps ports (RJ45) x 2
Magnetic Isolation Protection:
1.5 kV, built-in
Serial Interface
Serial Standards:
UC
-7122: RS-232/422/485 ports, software-selectable (DB9 male) x 2
UC
-7124: RS-232/422/485 ports, software-selectable (RJ45) x 4
ESD
Protection: 4 kV for all signals
Console Port:
RS-232 (TxD, RxD, GND), 4-pin pin header output
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 nonstandard 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
LEDs
System:
Ready, SD
LAN:
10M/Link x 2, 100M/Link x 2 (on connector)
Serial:
TxD, RxD (2 or 4 of each)

UC-7122/7124 Hardware Introduction
1-4
Physical Characteristics
Housing:
Aluminum (1 mm)
Weight:
UC
-7122: 190 g (0.42 lb)
UC
-7124: 200 g (0.44 lb)
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 Humidity:
5 to 95% (non-condensing)
Anti
-Vibration: 1 Grms @ IEC-68-2-6, sine wave (resonance search), 5-
500 Hz, 1 Oct/min, 1 cycle, 13 min
17 sec per axis
Power Requirements
Input Voltage:
12 to 48 VDC
Input Current:
UC
-7122:
• 170 mA @ 24 VDC
• 340 mA @ 12 VDC
UC
-7124:
• 180 mA @ 24 VDC
• 360 mA @ 12 VDC
Power Consumption:
• UC
-7122: 4.1 W
• UC
-7124: 4.3 W
Standards and Certifications
Safety:
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)
Time:
• UC
-7122: 234,746 hrs.
• UC
-7124: 210,233 hrs.
Standard:
Telcordia (Bellcore) Standard
Warranty
Warranty Period:
5 years
Details:
See www.moxa.com/warranty
Note: The Hardware Specifications apply to the embedded computer un
it itself, but not to accessories. In
particular, the wide temperature specification does not apply to accessories such as the power adapter and
cables.

UC-7122/7124 Hardware Introduction
1-5
Hardware Block Diagrams
UC-7122

UC-7122/7124 Hardware Introduction
1-6
UC-7124

2
2. Hardware Introduction
The UC-7122/7124 embedded computers are compact, well-designed, and built rugged enough for industrial
applications. The small pocket size of the computers makes them suitable for a variety of operating
environments. LED indicators help you monitor the performance and identify trouble spots, and the reliable
hardware platform allows you to devote your attention to developing your application. In this chapter, learn the
basics about the embedded computer hardware and its different parts.
The following topics are covered in this chapter:

Appearance
UC-7122
UC-7124

Dimensions
UC-7122
UC-7124

LED Indicators

Reset Button

Real Time Clock

UC-7122/7124 Hardware Hardware Introduction
2-2
Appearance
UC-7122
UC-7124

UC-7122/7124 Hardware Hardware Introduction
2-3
Dimensions
UC-7122

UC-7122/7124 Hardware Hardware Introduction
2-4
UC-7124
LED Indicators
LED Name LED Color LED Function
Ready Green Power is on and functioning normally
Off Power is off or there is another power error
SD Green SD card is detected
Off No SD card is detected
LAN
Orange 10 Mbps Ethernet link
Green 100 Mbps Ethernet link
Off Disconnected or short circuit
TxD
P1-P4* Green Serial ports P1-P4 transmitting data*
Off Serial ports P1-P4 not transmitting data*
RxD
P1-P4* Yellow Serial ports P1-P4 receiving data*
Off Serial ports P1-P4 not receiving data*
*Note that the TxD and RxD LEDs on the UC-7122 display port 1 and port 2 (P1/P2) status only.

UC-7122/7124 Hardware Hardware Introduction
2-5
Reset Button
Hold the reset button down for 5 seconds to load the factory default configuration. After loading the factory
defaults, the system will reboot automatically. We recommend that you use this function only if the software is
not working properly.
The reset button is NOT designed as a hard reboot for the embedded computer.
ATTENTION
Restoring default settings preserves your data
Resetting the embedded computer to factory defaults will NOT format the user directory and will NOT erase the
user’s data. The reset button only loads a configuration file.
Real Time Clock
The embedded computer’s real-time clock is powered by a lithium battery. We strongly recommend that you do
NOT replace the lithium battery yourself. If the battery needs to be changed, please contact the Moxa RMA
service team for assistance.
ATTENTION
There is a risk of explosion if the wrong type of battery is used. To avoid this potential danger, always be sure
to use the correct type of battery. Contact the Moxa RMA service team for battery replacement.
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

3
3. Hardware Connection Description
The UC-7122/7124 embedded computers support different types of connections. Dual Ethernet and multiple
serial interfaces are built into every model, including a serial console port for monitoring bootup messages. The
UC-7122/7124 also support an SD card for storage expansion, and USB ports that can be used to add external
hard drives. The pre-installed WinCE 5.0 operating system provides powerful development tools that allow you
to develop custom applications for remote operation of your device at low cost. In this chapter, learn how to
connect the embedded computer to the network and to various devices.
The following topics are covered in this chapter:

Installing the UC-7122/7124
Wall or Cabinet Mounting
DIN-Rail Mounting

Wiring Requirements
Connecting the Power
Grounding the Unit

Connecting Data Transmission Cables
Connecting to the Network
Connecting to a Serial Device
Connecting to the Serial Console Port

Installing an SD Card for Storage Expansion

USB Port

UC-7122/7124 Hardware Hardware Connection Description
3-2
Installing the UC-7122/7124
Wall or Cabinet Mounting
The UC
-7122/7124 have built-
in “ears” for attaching the embedded computers to a wall
or the inside of a cabinet. We suggest using two screws per ear to attach the
UC
-
7122/7124 to a wall or cabinet. The heads of the screws should be less than 6.0 mm
in diam
eter, and the shafts should be less than 3.5 mm in diameter, as shown by the
figure at the right.
DIN-Rail Mounting
DIN-rail attachments can be purchased separately to attach the product to a DIN-rail.
Wiring Requirements
This section describes how to connect serial devices to the embedded computer.
You should heed 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 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.

UC-7122/7124 Hardware Hardware Connection Description
3-3
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or wiring your 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 da
mage 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 feel hot to the touch.
Connecting the Power
The DC source should be from a UL Listed Class 2 or Limited Power Source (LPS), external adaptor with output
rated at 12 to 48 VDC, 1.2 A minimum. If the power is properly supplied, the “Ready” LED will glow a solid green
after a 25 to 30 second delay.
Grounding the Unit
Grounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Before
connecting any devices, run a ground wire from the ground screw to the grounding surface.
ATTENTION
This product should be mounted to 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 here. Connect the SG wire to an
appropriate grounded metal surface.

UC-7122/7124 Hardware Hardware Connection Description
3-4
Connecting Data Transmission Cables
This section describes how to connect the embedded computer to the network, serial devices, and serial COM
terminal.
Connecting to the Network
Plug your network cable into the embedded computer’s Ethernet port. The other end of the cable should be
plugged into your Ethernet network. When the cable is properly connected, the LEDs on the embedded
computer’s Ethernet port will glow to indicate a valid connection.
The 10/100 Mbps Ethernet LAN port uses 8-pin RJ45 connectors. The following diagram shows the pinouts for
these ports.
The LED indicator in the upper 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 left 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 a serial cable to plug your serial device into the embedded computer’s serial port. The two serial ports on
the UC-7122 use male DB9 connectors and are labeled P1 and P2. The four serial ports on the UC-7124 use
RJ45 connectors and are labeled P1, P2, P3, and P4. All of the serial ports can be configured by software for
RS-232, RS-422, or RS-485 communication. The pin assignments are shown in the following two tables:
DB9 Male Port (UC-7122)
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 – – –
RJ45 (UC-7124)
Pin RS-232 RS-422 RS-485
1 DSR – –
2 RTS TxD+ –
3 GND GND GND
4 TxD TxD- –
5 RxD RxD+ Data+
6 DCD RxD- Data-
7 CTS – –
8 DTR – –

UC-7122/7124 Hardware Hardware Connection Description
3-5
Connecting to the 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 viewing boot up message.
Serial Console Port & Pinouts Serial Console Cable
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
NC=Not Connected
Installing an SD Card for Storage Expansion
The UC-7122/7124 provide an SD slot for storage expansion. The SD slot allows users to plug in a Secure
Digital (SD) memory card compliant with SD standard V1.0 for up to 1 GB of additional memory space. The
following steps show you how to install an SD card in the UC-7122/7124.
The SD slot is located on the right side of the UC-7122/7124 enclosure. To install an SD card, you must first
remove the protective cover to access the slot, and then plug the SD card directly into the slot.
Step 1: Use a screwdriver to remove the screws holding the SD card slot’s outer cover.
Step 2: After removing the cover, insert the SD memory card into the slot.
NOTE
To remove the SD card from the slot, press the SD card in slightly with your finger, and then remove your finger
to cause the card to
spring out partially. You may now grasp the top of the card with two fingers and pull it out.
USB Port
The UC-7122/7124 has one USB port that supports USB 2.0 host. The USB port is used to connect an external
flash disk to the embedded computer.