User`s manual

EM-1240 Hardware User’s Manual EM-1240 Functionality
EM-1240 Embedded Module Functions
The EM-1240 Embedded Module is designed to be integrated directly into the user’s system and
application. The module has four software-selectable RS-232/422/485 serial ports, dual 10/100
Mbps LAN ports, 1 RS-232 console port, and GPIO/SD signals. In addition, the EM-1240 uses the
Moxa ART ARM9 32-bit 192 MHz communication processor, which ensures excellent
performance for data transmission.
The pre-installed μClinux Kernel 2.6.9 makes it easy for users to develop programs for a variety of
applications. The EM-1240 is an ideal solution for manufacturing automation, intelligent
transportation monitoring, and remote device control.
RS-232/422/485 Serial Ports
The EM-1240 Embedded Module has 4 software-selectable RS-232/422/485 serial ports. Pin
assignment diagrams are shown in a later section. The ports can be configured by software. Please
refer to Software User’s Manual for details.
Console Port
The EM-1240 Embedded Module has 1 console port for onsite configuration. However, it can also
be used as a serial port with standard RS-232 interface and PPP function support. Refer to the
Software User’s Manual for details.
LAN Ports
The EM-1240 Embedded Module has 2 10/100 Mbps LAN ports that can be used to set up a
redundant Ethernet network for non-stop operation, and the on-board transformer provides 1.5 KV
isolation protection.
SD Signals
The EM-1240 Embedded Module provides SD signals for storage expansion. Designers can use
these signals to create an SD socket. Note that you can use a Secure Digital (SD) memory card
compliant with the SD 1.0 standard to provide up to 1GB of additional memory space. However,
the SD signals share the same mechanical layout with GPIO. When you enable the SD signals, the
GPIO function will be disabled, and vice versa.
GPIO
The EM-1240 Embedded Module provides 10 software-selectable GPIOs. Note that users can
choose to enable either the SD Signals or the GPIO function, but not both. When you enable the
GPIO function, the SD Signals will be disabled.
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