— 4 — — 5 — — 6 —
Male DB9 Port J5 Console Port
54
32
1
9876
1
LAN Ports
The EM-1240 embedded module has 2 LAN ports that support 10/100
Mbps. The communication redundancy provided by the 2 LAN ports is
useful for avoiding network failure.
8-pin RJ45
18
spbM001 rota
c
idni
spbM01 rota
c
idn
i
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 ---
5 ---
6 ERx-
7 ---
8 ---
SD Socket
The EM-1240 Development Kit has an internal SD socket for storage
expansion. The SD socket allows users to plug in a Secure Digital (SD)
memory card that is compliant with the SD 1.0 standard to provide up
to 1 GB of additional memory space. When removing the SD card from
the socket, press in the SD card first to cause it to pop out. Detailed
information is provided in the Software User’s Manual.
GPIO
The EM-1240 Development Kit has 10 GPIOs. Digital input channels
and digital output channels can be configured by software. Note that
the GPIO function will not work if you enable the SD signals. Use the
GPIO pin header to connect to devices. The GPIO pinouts are shown in
the following figure.
01
11
2
1
31
4
1
C
CV
CCV
Connecting the Power
You may use either 5 VAC power or use the terminal block to provide
power. Use the power switch to turn on and turn off the Development
Kit.
Reset Button
Press the Reset button on the EM-1240-DK 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. We recommend that you only use this function if the
software is not working properly and you want to load factory default
settings. To reset an embedded Linux system, always use the software
reboot command />reboot to protect the integrity of data being
transmitted or processed. The Reset button is not designed to hard
reboot the EM-1240 Development Kit.
7. Software Installation Procedure
STEP 1: Insert the EM-1240 CD-ROM into your Windows or Linux PC.
Use Acrobat Reader to view the EM-1240 User’s Manual.
STEP 2: Install the EM-1240 tool chain, which is on the CD-ROM. The
tool chain consists of the following components:
1. UC Finder: Broadcast search for the EM-1240 IP address on
your LAN. The EM-1240 supports the Linux platform.
2. Cross Compiler: Arm-elf-gcc is a C/C++ PC Cross
Compiler, which is a gcc compiler that runs on an x86 PC, but
creates an execution file for Arm-based platforms (such as the
EM-1240). For more information visit http://www.uclinux.org.
3. uClibc: uClibc is an abbreviation for “microcontroller C
library.” uClibc was created to support µClinux, a Linux port
for MMU-less microcontrollers, such as the ARM9 installed in
the EM-1240. For more information, visit
http://www.uclibc.org.
STEP 3: Edit source code on a Linux PC.
STEP 4:Use the Cross Compiler to compile the source code, and then
use FTP to download the program to the EM-1240.
STEP 5:Run your program.
8. EM-1240 Hardware Specifications
Model EM-1240 Embedded Module
CPU Moxa ART ARM9 32-bit 192 MHz processor
RAM 16 MB
Flash 8 MB
LAN Auto-sensing 10/100 Mbps × 2
Built-in 1.5 KV magnetic isolation
Serial Ports 4 serial ports that support RS-232/422/485
signals
RS-232: TxD, RxD, DTR, DSR, RTS, CTS, DCD,
GND
RS-422: TxD+, TxD-, RxD+, RxD-, GND
4-wire RS-485: TxD+, TxD-, RxD+, RxD-, GND
2-wire RS-485: Data+, Data-, GND
Serial Protection: 15 KV ESD for all signals
Data bits: 5, 6, 7, 8
Stop bits: 1, 1.5, 2
Parity: None, even, odd, space, mark
Flow Control: RTC/CTS, XON/XOFF
Speed: 50 bps to 921.6 Kbps, support any baudrate
Serial Console RS-232 × 1 (supports full signals and PPP)
Storage Expansion SD signals for external Secure Digital (SD)
socket connection
GPIO GPIO × 10 (to enable GPIO, SD must be
disabled)
Real-time Clock Yes
Watchdog Timer Yes
Buzzer Signals Buzzer signals reserved for external buzzer
connection
LED Signals System: Ready × 1
LAN: 10M/Link × 2, 100M/Link × 2
Serial: TxD × 4, RxD × 4
Reset Signal Reserve signal for external “Reset to Default”
button connection
Power Input Accept external 5 VDC through pin header
Dimensions (W × L) 90 × 80 mm
Operating Temperature -10 to 60◦C (14 to 141◦F), 5 to 95% RH
Storage Temperature -20 to 80◦C (-4 to 176◦F), 5 to 95% RH
Module Interface Two 2 × 28 pin-headers,
pitch: 1.27 × 1.27 (mm)
Click here for online support:
www.moxa.com/support
The Americas: +1-714-528-6777 (toll-free: 1-888-669-2872)
Europe: +49-89-3 70 03 99-0
Asia-Pacific: +886-2-8919-1230
China: +86-21-5258-9955 (toll-free: 800-820-5036)
©2008 Moxa Inc., all rights reserved.
Reproduction without permission is prohibited.
