Features and Benefits Customization Service

  • 16 MB RAM, 8 MB flash disk onboard
  • 4 software-selectable RS-232/422/485 serial ports
  • Dual 10/100 Mbps Ethernet ports for network redundancy
  • SD signals supported for external SD socket connection
  • Built-in RTC, buzzer
  • 10 GPIOs reserved for system integration
  • Ready-to-run μClinux Kernel 2.6 platform
  • Full-function development kit for quick evaluation and application development
  • -40 to 75°C wide temperature models available


The EM-1240 embedded module features 4 RS-232/422/485 serial ports, dual Ethernet ports, and an SD socket for external storage expansion. The modules have a compact design that can be easily integrated with industrial applications such as gas stations, vending machines, and ticketing machines, and offer a powerful serial communication capability for better system integration. Programmers will find that the pre-installed, ready-to-run μClinux platform and the full-function development kit make it easy to develop software and build a reliable communication base for industrial automation applications. In addition, a wide temperature model is also available to provide a reliable solution for harsh environments.

Hardware Specifications
• Computer
CPUMOXA ART ARM9 32-bit, 192 MHz
FlashNOR Flash, 8 MB
OS (pre-installed)Linux
• Storage
Storage ExpansionSD sockets x 1
• Ethernet Interface
LANAuto-sensing 10/100 Mbps ports (RJ45) x 2
Magnetic Isolation Protection1.5 kV, built-in
• Serial Interface
Serial StandardsRS-232/422/485 x 4, software-selectable
ESD Protection15 kV for all signals
Console PortRS-232 (all signals), RJ45 connector
• Serial Communication Parameters
Data Bits5, 6, 7, 8
Stop Bits1, 1.5, 2
ParityNone, Even, Odd, Space, Mark
Flow ControlRTS/CTS, XON/XOFF, ADDC® (automatic data direction control) for RS-485
Baudrate50 bps to 921.6 kbps (supports nonstandard baudrates; see user’s manual for details)
• Serial Signals
RS-422TxD+, TxD-, RxD+, RxD-, GND
RS-485-4wTxD+, TxD-, RxD+, RxD-, GND
RS-485-2wData+, Data-, GND
• LEDs
LAN10M/Link x 2, 100M/Link x 2
SerialTxD x 2, RxD x 2
• Physical Characteristics
Weight• EM-1240 Module: 50 g (0.11 lb)
• EM-1240 Development Kit: 200 g (0.44 lb)
Dimensions• EM-1240 Module: 90 x 80 mm (3.54 x 3.15 in)
• EM-1240 Development Kit: 177 x 115 mm (6.97 x 4.53 in)
Module InterfaceTwo 2 x 28 pin-headers (1.27 x 1.27 mm pitch)
• Environmental Limits
Operating TemperatureStandard Models: -10 to 60°C (14 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage TemperatureStandard Models: -20 to 80°C (-4 to 176°F)
Wide Temp. Models: -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity5 to 95% (non-condensing)
• Power Requirements
Input Voltage5 VDC
Input Current500 mA @ 5 VDC
Power Consumption2.5 W
• Standards and Certifications
EMCEN 55032 Class A, EN 61000-3-2 Class A, EN 61000-3-3, EN 55024, FCC Part 15 Subpart B Class A
• Reliability
Alert ToolsBuilt-in buzzer and RTC (real-time clock)
Automatic Reboot TriggerBuilt-in WDT (watchdog timer)
• MTBF (mean time between failures)
Time385,419 hrs
StandardTelcordia (Bellcore) Standard
• Warranty
Warranty Period5 years
DetailsSee www.moxa.com/warranty
NoteThe Hardware Specifications apply to the embedded computer unit itself, but not to accessories. In particular, the wide temperature specification does not apply to accessories such as the power adapter and cables.
Software Specifications
• μClinux
OSμClinux 2.6.19
File SystemJFFS2
Internet Protocol SuiteARP, ICMP, IPV4, TCP, UDP, FTP, Telnet, SNMP V1, HTTP, CHAP, PAP, DHCP, NTP, NFS V2, SMTP, Telnet, PPP, PPPoE
Web Server (Boa)Allows you to create and manage web sites
Terminal Server (Telnet)Provides telnet communications between two hosts over the network
Dial-up NetworkingPPP Daemon (pppd) for Linux that uses the PPP protocol and allows Unix machines to connect to the Internet as PPP servers or clients, through dialup. The PPP Daemon works with chat, dip, and diald programs among others, and supports th
Application Development Software• Moxa API Library (Watchdog timer, Moxa serial I/O control)
• arm-elf-gcc: C/C++ cross-compiler
• μClibc: POSIX standard C library

To request a quote, indicate which items you are interested in below and click “Get a Quote”.

Available Models

Model No.Description
EM-1240 Development KitIncludes the EM-1240-DK snap-on testing board with built-in RJ45 LAN ports and DB9 male serial ports
EM-1240-LXcore module with 4 serial ports, dual LANs, SD, μClinux OS(Operating Temperature: -10 to 60°C)
EM-1240-T-LXcore module with 4 serial ports, dual LANs, SD, μClinux(Operating Temperature: -40 to 75°C)

Optional Accessories

 RCore Software

Model No.Description
Mass Configuration ToolA time-saving tool that helps users simultaneously deploy many tasks to Moxa’s embedded computers (available free)
MDM APIMoxa Device Manager Application Program Interface (available free)



Pin Assignment

Professional Design Service

Moxa’s customization service for industrial computing products is based on the Professional Design Service (PDS) concept, which aims to provide customers with tailor-made solutions. Industrial applications often have specific requirements, and specialized solutions are often needed. With more than 20 years of experience in the industrial networking and automation field, Moxa can offer professional, customized products and services that are ideal for your own industrial applications.

Customer Benefits
• Comprehensive consideration of platform system design gives optimal solutions, and guarantees that proposals address customer needs
• Our sophisticated customization procedures are built on meticulous production and quality control processes
•  A full-time technical support team gives customers quick and reliable solutions