The I-7188EX, Embedded Internet/Ethernet Controller, focuses in Embedded Control applications while the I-7188EN, Internet Communication Controller, focuses in communication applications. According to different embedded firmware and application program, the Internet Communication Controller can be used as Device Server or Addressable Ethernet to RS-232/485/422 Converter or Embedded Internet/Ethernet Controller. The user should refer to comparison table to choose optimal product. Now we offer wide range Internet Communication Controllers, such as I-7188E1 / E2 /E3 /E4 / E5 / E8. Except the RTC circuitry, the basic hardware of I-7188EN is similar to I-7188EX. Since there are too many configurations for I-7188EN series product, OEM or ODM version is welcomed.Can be used as Addressable Ethernet to RS-232/485/422 Converter.

Most RS-232/485/422 devices don’t support device address. The I-7188EN series can assign a unique address to any RS-232 device installed in the Ethernet network. Host-PC can send command with device address to Ethernet network, the destination I-7188EN will remove the address field & pass the other fields of command to its local RS-232 device. The response of this local RS-232 device will be passed to host-PC via this destination I-7188EN.

The i-7188EN series can be used as Ethernet to RS-232/485/422 Device Server. The Device Server is an appliance that network enables any device with a serial communication port. By virtue of its independent operating system, protocol independence, small size and flexibility, Device servers are able to meet the demand of virtually any network-enable application. Most devices don’t have network ports. Our Internet Communication Controllers allow those devices to become connected to the network.

The hardware and software of i-7188EN is similar to i-7188EX, the i-7188EN also can be used as Embedded Internet/Ethernet Controller except the RTC (Real Time Clock). The user can use well-developed libraries and demo programs to implement an Embedded Internet/Ethernet Controller.



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    • Factory Automation
    • Building Automation
    • Home Automation


    • AMD 80188-40 Embedded CPU, or compatible
    • Supports a variety of TCP/IP features, including TCP, UDP, IP, ICMP, ARP
    • 10BASE-T NE2000 compatible Ethernet Controller
    • Reloadable Operating Software
    • Remote Configuration
    • Diagnostics
    • COM driver support interrupt & 1K QUEUE Input & Output buffer
    • Support serial port
    • Built-in EEPROM
    • support one RS-232 port
    • 7-segment LED display for I-7188E1D
    • Built-in MiniOS7
    • Program download port: COM1 or Ethernet Port


    Hardware Specifications

    CPU 80188, 40MHz or compatible
    SRAM 384K bytes
    Flash Memory 512K bytes
    EEPROM 2K Bytes
    Built-in Watchdog Timer Yes
    Communication Interface
    COM1 RS-232 (TXD, RXD, RTS, CTS, GND)
    Ethernet Port 10BASE-T NE2000 compatible Ethernet Controller
    COM Port Formats
    Data Bit 7, 8
    Parity Even, Odd, None
    Stop Bit 1
    Baud Rate 115200 bps Max.
    LED Indicators
    5-Digit 7 Segment LED Display Yes (for I-7188E1D only)
    System LED Indicator Yes
    I-7188E5(D) 123 mm x 72 mm x 33 mm
    Operating Environment
    Operating Environment -25°C to +75°C
    Storage Temperature -40°C to +80°C
    Protection Power reverse polarity protection
    Required Supply Voltage +10 to +30VDC (non-regulated)
    Power consumption 2W for I-7188E1
    3W for I-7188E1D

    Hardware Structure

    Pin Assignment


    Ordering Informations

    I-7188E1 Ethernet to RS-232 converter
    I-7188E1D I-7188E1D without LED display
    I-7188E1 CR Ethernet to RS-232 converter (RoHS)
    I-7188E1D CR I-7188E1D without LED display (RoHS)