GN RS232/485 Interface Conversion Module


Realize half-duplex conversion from RS-232 interface to RS-485 interface. When applying RS-485 network communication, because the whole communication system is connected through RS-485 bus and each control unit is far from each other, to ensure the system reliable, RS-485 interface terminal adopts the separate driving mode in each channel and photoelectric isolation with 3500V isolating voltage to connect host-linked RS-232 with RS-485 interface terminal. The high-speed transient voltage suppresser (TVS) can effectively restrain lightening and ESD, and effectively avoid lightening strike or other interferences.

Technical Specification

  • Interface characteristics:

    RS-232C and RS-485 standard compatible with EIA/TIA.

    Electric Interface:         

    DB9 female connector of RS-232C interface and RS-485 interface module with a 10-pin terminal.

    Transferring media:

    Twisted-pair or shield cable.

    Work mode:

    Asynchronous half-duplex.

    Signal indicator light:

    Two double-color indicator light TXD and RXD.

    Isolation voltage:

    Isolated voltage 3500VRMS, 500VDC continuous.

    Transmission rate:

    115.2K bps for 1.2Km, 38.4K bps for 2.4Km and 9600 bps for 5Km

    Protection grade:

    +15KV ESD protection for RS-232 and 1500W lightening strikes surging protection of each line for RS-485.

    Transmission distance:

    0-5Km (115200-9600bps)


    Operating temperature: 0-60

    Relative humidity:

    5%- 90%, non-condensing


    100mm x 70mm x 115mm


MY Office : 72-3C, JALAN PUTERI 2/4, BANDAR PUTERI, 47100 PUCHONG, SELANGOR, Malaysia. Tel:+603-8063 9300 fax:+603-8063 9400
SG Office : 259, Onan Road, Singapore 424651. Tel: +65-6468 3325 Fax: +65-6764 5646