Moxa Technologies UC-7101 Instructions for use

UC-7101
Hardware User’s Manual
Second Edition, June 2008
www.moxa.com/product
©2008 Moxa Inc., all rights reserved.
Reproduction without permission is prohibited.

UC-7101 Hardware User’s Manual
The software described in this manual is furnished under a license agreement and may be used only in
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Copyright ©2008 Moxa Inc.
All rights reserved.
Reproduction without permission is prohibited.
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part of Moxa.
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not limited to, its particular purpose. Moxa reserves the right to make improvements and/or changes to this
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This product might include unintentional technical or typographical errors. Changes are made periodically to the
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Table of Contents
Chapter 1 Introduction..................................................................................................1-1
Overview.................................................................................................................................. 1-2
Package Checklist .................................................................................................................... 1-2
Product Features ...................................................................................................................... 1-3
Product Specifications ............................................................................................................. 1-3
Hardware Specifications............................................................................................... 1-3
Software Specifications—UC-7101 (μClinux)............................................................. 1-4
Hardware Block Diagrams....................................................................................................... 1-5
Chapter 2 Hardware Introduction.................................................................................2-1
Appearance .............................................................................................................................. 2-2
Dimensions .............................................................................................................................. 2-3
Panel Views.............................................................................................................................. 2-4
LED Indicators......................................................................................................................... 2-5
Internal SD Socket ................................................................................................................... 2-5
Additional Functions................................................................................................................ 2-5
Reset Button ................................................................................................................. 2-5
Real Time Clock........................................................................................................... 2-6
Chapter 3 Hardware Connection Description .............................................................3-1
Wiring Requirements ............................................................................................................... 3-2
Connecting the Power................................................................................................... 3-2
Grounding the UC-7101 Embedded Computer ............................................................ 3-2
Connecting Data Transmission Cables .................................................................................... 3-3
Connecting to the Network........................................................................................... 3-3
Connecting to a Serial Device ...................................................................................... 3-4
Serial Console Port ....................................................................................................... 3-4
Installing a Secure Digital (SD) Memory Card........................................................................ 3-4

1
1
Chapter 1 Introduction
The Moxa UC-7101 series of embedded computers are mini, RISC-based, box-type computers that
feature 10/100 Mbps Ethernet ports, RS-232/422/485 serial ports, and an ARM9 processor. The
computers come with Linux pre-installed. In addition, the UC-7101 has an internal SD socket for
storage expansion to offer high performance communication with unlimited storage in a
super-compact, palm-size box. The UC-7101 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.
In this chapter, we cover the following topics:
Overview
Package Checklist
Product Features
Product Specifications
¾Hardware Specifications
¾Software Specifications—UC-7101 (μClinux)
Hardware Block Diagrams

UC-7101 Hardware User’s Manual Introduction
Overview
The UC-7101 series of mini, RISC-based communication platforms are ideal for embedded
applications. All computers in the series come with RS-232/422/485 serial ports and 10/100 Mbps
Ethernet LAN ports to provide users with a versatile communication platform.
The UC-7101 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-7101) and SDRAM (16 MB for UC-7101) give you plenty of storage capacity, and the
SD socket provides greater flexibility for running various applications. The LAN ports built into
the ARM9 allow the UC-7101 computers to be used as communication platform for basic data
acquisition and protocol conversion applications, and the RS-232/422/485 serial ports allow you to
connect a variety of serial devices.
The UC-7101 comes with the µClinux operating system pre-installed. Software written for desktop
PCs is easily ported to the UC-7101 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-7101 series currently includes two models:
Standard Operating Temperature Models (-10 to 60°C)
UC-7101-LX
Mini RISC-based Ready-to-Run Embedded Computer with 1 Serial Port, 1 Ethernet Port,
μClinux OS.
Wide Operating Temperature Models (-40 to 75°C)
UC-7101-T-LX
Mini RISC-based Ready-to-Run Embedded Computer with 1 Serial Port, 1 Ethernet Port,
μClinux OS, Wide Temperature.
Each model is shipped with the following items:
y1 UC-7101
yQuick Installation Guide
yDocument & Software CD
y100 cm RJ45-to-RJ45 Ethernet cross-over cable
y100 cm console port cable (CBL-4PINDB9F-100)
yUniversal Power Adaptor
yProduct Warranty Statement
Optional Accessories
y35 mm DIN-Rail Mounting Kit (DK-35A)
NOTE: Please notify your sales representative if any of the above items are missing or damaged.
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UC-7101 Hardware User’s Manual Introduction
Product Features
The UC-7101 series computers have the following features:
yMoxa ART ARM9 32-bit 192 MHz processor
y16 MB RAM (about 12 MB of user programmable space)
y8 MB Flash ROM (about 4 MB of user programmable space)
yOne 10/100 Mbps Ethernet port for network redundancy
yOne software-selectable RS-232/422/485 ports
ySelect Any Baudrate from 50 bps to 921.6 Kbps
ySD socket for storage expansion
yBuilt-in RTC, Buzzer, WDT
yBuilt-in μClinux Kernel 2.6 platform
y-40 to 75oC wide temperature models available
yDIN-Rail or wall mountable
yRobust fanless design
Product Specifications
Hardware Specifications
System
CPU Moxa ART ARM9 32-bit RISC CPU, 192 MHz
DRAM UC-7101: 16 MB
Flash UC-7101: 8 MB
Storage Expansion UC-7101: SD slot ¯1
Console port RS-232 ¯1 (TxD, RxD, GND), 4-pin header output, “19200, n, 8, 1”
Button Reset button ¯1, supports “Reset to Factory Default”
Other RTC, buzzer, Watchdog Timer
OS UC-7101: Built-in μClinux, based on Linux Kernel 2.6
Network Communication
LAN UC-7101: 10/100 Mbps RJ45 ¯1, auto-sensing
Protection 1.5 KV built-in magnetic isolation protection
Serial Communication
Serial Port UC-7101: Software-selectable RS-232/422/485 DB9 male ¯1
Protection 15 KV built-in ESD protection for all signals
Data bits 5, 6, 7, 8
Stop bit(s) 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF, RS-485 ADDC™
Speed 50 bps to 921.6 Kbps; ANY BAUDRATE supported
LEDs
System Ready ¯1
LAN 10 M/Link¯1, 100 M/Link ¯1 (located on RJ45 connector)
Serial TxD ¯1, RxD ¯1 (UC-7101)
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UC-7101 Hardware User’s Manual Introduction
Power Requirements
Power Input 12 to 48 VDC
Power Consumption 300 mA @ 12 VDC (UC-7101)
Mechanical
Dimensions (W¯D¯H) 67 ¯100.4 ¯22 mm (UC-7101)
Weight 130 g
Construction Material aluminum, 1 mm
Mounting DIN-rail, Wall-mounting
Environment
Operating Temperature -10 to 60°C (14 to 140°F), 5 to 95% RH
-40 to 75°C (-40 to 167°F) for -T models
Storage Temperature -20 to 80°C (-4 to 176°F), 5 to 95% RH
-40 to 85°C (-40 to 185°F) for -T models
Regulatory Approvals
EMC FCC, CE (Class A)
FCC Part 15, CISPR 22 Class A
CE Class A: EN55022 Class A, EN61000-3-2 Class A,
EN61000-3-3, EN55024
Safety UL/cUL: UL60950, CAN/CSA-C22.2 No. 60950-00, LVD: EN60950-1
Other RoHS, CRoHS, WEEE
Warranty 5 years
Software Specifications—UC-7101 (μClinux)
Kernel Version: 2.6.19
Protocol Stacks: TCP, UDP, IPv4, SNMP V1/V2c, ICMP, ARP, HTTP, CHAP, PAP,
DHCP, NTP, NFS, SMTP, Telnet, FTP, PPP, PPPoE
File System: JFFS2 (on-board flash) for Kernel, Root File System (Read Only) and
User Directory (Read / Write)
System Utilities: msh, busybox, tinylogin, telnet, ftp
Supported Services and Daemons:
telnetd: Telnet Server daemon
ftpd: FTP server daemon
Boa: Web server daemon
pppd: dial in/out over serial port daemon & PPPoE
snmpd: snmpd agent daemon
inetd: TCP server manager program
Application Development Environment:
Moxa Linux API Library
Linux and Windows Tool Chain:
Arm-elf-gcc: C/C++ PC Cross Compiler
μClibc: POSIX Standard Library
UC Finder: UC’s LAN IP broadcast search utility for Windows and
Linux
Device Drivers: UART, RTC, Buzzer, SD Card
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UC-7101 Hardware User’s Manual Introduction
Hardware Block Diagrams
UC-7101
RS-232/422/485 RS-232
Ethernet
1-5
16 MB
SDRAM
MOXA ART CPU
32-bit ARM9
192 MHz
LAN
PHY
MAC
Power
Circuit
8 MB
Flash
RTC
Watchdog
UART UART
Serial
Port
Console
Port

2
2
Chapter 2 Hardware Introduction
The UC-7101 is compact, rugged embedded computers designed for industrial applications. The
LED indicators on the computers’ outer casing help you monitor the performance of the computers,
and assist in identifying trouble spots. The hardware platform is both reliable and stable, and
allows you to devote the bulk of your attention to developing your own application. In this chapter,
we cover the basic hardware of the UC-7101 series embedded computers.
In this chapter, we cover the following topics:
Appearance
Dimensions
Panel Views
LED Indicators
Internal SD Socket
Additional Functions
¾Reset Button
¾Real Time Clock

UC-7101 Hardware User’s Manual Hardware Introduction
Appearance
UC-7101
Ethernet
(10/100BaseTx)
RS-232
Console Terminal
Internal SD Slot for
Storage Expansion
(remove cover to access)
12 to 48 VDC
Serial Port
(RS-232/422/485)
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UC-7101 Hardware User’s Manual Hardware Introduction
Dimensions
UC-7101
6 (0.24)
12.5 (0.49)
25 (0.98)
4 (0.16)
7 (0.28)
22 (0.87)
67 (2.64)
43.3 (1.67)
21.3
(0.8)
)59.3(4.001
78 (3.07)
90 (3.54)
unit = mm (inch)
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UC-7101 Hardware User’s Manual Hardware Introduction
Panel Views
UC-7101
Top View
Bottom View
DB9 (male) Serial Port
DIN-Rail
screw hole
Wallmount
screw hole
Nameplate View
RJ45 10/100 Mbps Ethernet Ports
Reset Button
Terminal Block
Power Input
2-4

UC-7101 Hardware User’s Manual Hardware Introduction
LED Indicators
The following table shows the functions of the five LED indicators located on the front panel of
the UC-7101 embedded computers.
LED Name LED Color LED Function
Ready Green Power is on and functioning normally.
Green Serial port 1 is transmitting data.P1 (Tx)
Off Serial port 1 is not transmitting data.
Yellow Serial port 1 is receiving data.P1 (Rx)
Off Serial port 1 is not receiving data.
Internal SD Socket
The UC-7101 has an internal SD socket for storage expansion. A Secure Digital (SD) memory card
compliant with the SD 1.0 standard can be used to provide up to 1 GB of additional memory space.
To install an SD card, first remove the outer cover of the embedded computer to access the SD slot.
The internal SD slot is located on the top side of UC-7101 main board, in the slot on the right side
of the UC-7101, but lower than the cover screw. Plug the SD card into the socket directly. In
addition, remember to “push in” the SD card first if you want to remove it.
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 data that is being transmitted. The reset button
is NOT designed to Hard Reboot the UC-7101 series embedded computer.
ATTENTION
Restoring default settings preserves your data
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.
Please note that if there is a problem with the /etc directory, the embedded computer may be
unable to restore the factory default settings.
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UC-7101 Hardware User’s Manual Hardware Introduction
ATTENTION
This function only takes effect when the user directory is working correctly. If the user directory
has crashed, the kernel will automatically load the factory defaults.
Real Time Clock
The real time clock in the UC-7101 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 be
sure to use the correct type of battery.
2-6

3
3
Chapter 3 Hardware Connection Description
In this chapter, we show how to connect the UC-7101 embedded computer to the network and to
various devices.
¾Connecting the Power
01 Embedded Computer
ission Cables
Memory Card
In this chapter, we cover the following topics:
Wiring Requirements
¾Grounding the UC-71
Connecting Data Transm
¾Connecting to the Network
¾Connecting to a Serial Device
¾Serial Console Port
Installing a Secure Digital (SD)

UC-7101 Hardware User’s Manual Hardware Connection Description
Wiring Requirements
This section explains how to connect the UC-7101 to serial devices.
You should heed the following safety precautions before installing any electronic device:
yUse 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.
yUse 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.
yKeep input wiring and output wiring separate.
yIt is advisable to label the wiring to all devices in the system.
ATTENTION
Safety First!
Be sure to disconnect the power cord before installing and/or wiring your UC-7101 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-7101 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-7101 terminal block. If
the power is supplied properly, the “Ready” LED will glow a solid green color after a 25 to 30
second delay.
The power for this product is intended to be supplied by a Listed Power Unit that is rated to
deliver 12 to 48 VDC at a minimum of 300 mA for the UC-7101.
Grounding the UC-7101 Embedded Computer
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.
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UC-7101 Hardware User’s Manual Hardware Connection Description
ATTENTION
This product should be mounted on a well-grounded mounting surface such as a metal panel.
V+V-
SG
12-48V
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.
Connecting Data Transmission Cables
This section describes how to connect the UC-7101 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-7101’s 10/100M Ethernet port, and the other end
of the cable to the Ethernet network. If the cable is properly connected, the UC-7101 will indicate
a valid connection to the Ethernet in the following ways:
yThe top-right LED on the connector glows a solid green when connected to a 100 Mbps
Ethernet network.
yThe top-left LED on the connector glows a solid orange when connected to a 10 Mbps Ethernet
network.
yThe LEDs will flash when Ethernet packets are being transmitted or received.
The 10/100 Mbps Ethernet LAN 1 port uses 8-pin RJ45 connectors. Pinouts for the port are shown
in the following diagram.
8-pin RJ45
18
100 Mbps
indicator
10 Mbps
indicator
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 ---
5 ---
6 ERx-
7 ---
8 ---
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UC-7101 Hardware User’s Manual Hardware Connection Description
Connecting to a Serial Device
Connect the serial cable between the UC-7101 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
12345
6789
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 --- --- ---
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-7101 boot up message.
Serial Console Port & Pinouts
Serial Console Cable
4
3
2
1
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
Installing a Secure Digital (SD) Memory Card
UC-7101
The SD slot is located on the right side of the UC-7101 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.
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UC-7101 Hardware User’s Manual Hardware Connection Description
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 forward 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.
3-5