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EKI-1121L and EKI-1122L are RISC-based embedded communication  controllers which provide dual auto-sensing 10/100 Mbps Ethernet ports for network redundancy and one or two software-selectable RS-232/422/485  serial ports. The EKI-1121L and EKI-1122L use the ARM7 RISC CPU which is a powerful computing engine to fulfill  data compression or protocol conversion requirements. The built-in  8 MB flash ROM and 16 MB SDRAM provide user enough storage to run their specific applications.

Specifications

 

System

 

 

 

 

Mechanics

 

  CPU

  Flash

  SDRAM

  OS (pre-installed)

  Console Port

  Other

ARM7 32-bit RISC CPU, 80 MHz

8 MB

16 MB

uClinux

RS-232, 3-wire (Tx, Rx, GND) pin-header

RTC, watchdog timer

  Dimensions

  Housing

  Weight

  Mounting

 

Power Requirements

37 x 140 x 95 mm (W x H x D) Metal

600g

DIN-rail, wall

Ethernet Interface

  LAN

 

 

2 x auto-sensing 10/100 Mbps ports

  Input Voltage

  Power Consumption

12 ~ 48 VDC, redundant dual inputs

2.5 W

  Connector

RJ-45

Software (uClinux)

 

  Protection

1.5 kV magnetic isolation protection

  Kernel Version

2.4.31

 

 

  Protocol Stack

TCP, UDP, IPv4, ICMP, ARP, SNMP V1, HTTP, DHCP,

Serial Interface

 

 

NTP, NFS, SMTP, Telnet, FTP, PPP, PPPoE


  Serial Standards        Software selectable RS-232/422/485 ports

  Connectors                         D-sub 9 male

  Protection                 15 kV ESD protection for all signals

 

Serial 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, automatic RS-485 data flow control

  Baud Rate                   50 bps to 921.6 kbps

 

Serial Signals

  RS-232                       TxD, RxD, DTR, DSR, RTS, CTS, DCD, RI, GND

  RS-422                       TxD+, TxD-, RxD+, RxD-, GND

  RS-485                       Data+, Data-, GND

 

LEDs

  System                     OS ready, power 1 and power 2 ready

  LAN                           Speed (10/100 Mbps), link/active (on connector)

  Serial                        TxD, RxD


  File System                ROMFS/JFFS2

  System Utility              busybox, telnet, ftp, sash, tftp

  Daemon                     pppd, snmpd, telnetd, inted, ftpd, boa

  Linux Tool Chain         Arm-elf-gcc: C/C++ PC Cross Compiler

  uClibc                                    POSIX Standard Library

 

Environmental Limits

  Operating Temperature   0 ~ 60° C (32 ~ 140° F)

  Storage Temperature       -20 ~ 80° C (-4 ~ 176° F)

  Operating Humidity    5 ~ 95 % RH

 

Regulatory Approvals

  EMC                                       CE, FCC Part 15 Subpart B (Class A)

  Hazardous Location    UL/cUL Class I, Division 2

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