USB RS485
O​​​​ptical Isolated Converter V1.0

End of life! 
It isn't recommend for new projects

For your new project you can use our new KMP RS485 converter V3.0

USB RS485 Optical Isolated Converter V1.0 Converter 3D

USB RS485 converter

KMP USB RS485 Optical Isolated Converter V1.0 allows you to connect your serial devices to systems by using a USB interface. With auto configuration in data format, baud rate and RS485 data flow direction control. The USB to RS485 Optical Isolated Converter is able to automatically configure RS485 signals to baud rate without external switch setting. The USB to RS485 Optical Isolated Converter is equipped with 1000V DC of isolation and internal surge-protection on each data lines to protect the host computer and converter against high voltage spikes, as well as ground potential difference. A USB to RS485 Optical Isolated Converter also features a high-speed 57.6K bps transmission rate, and supports various O.S.

USB RS485 Optical Isolated Converter V1.0 sketch

Features


  • Full compliance with the USB V1.0 and 2.0 specification.
  • System gets 1 COM port when the converter is connected.
  • Auto data format detecting.
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    Auto direction flow control on RS485.
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    Baud rate from 1200 bps to 57.6K bps.
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    256 Byte Transmit Buffer.
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    128 Byte Receive Buffer.
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    Direct power from USB port, no external power necessary. 
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    1000V DC isolated protection.
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    Surge protection on RS485 data lines.
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    Compatible with Modbus RTU/ASCII and BACnet.
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    Up to 32 nodes in network configuration.
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    TX/RX mode LED indicators.
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    Unique device ID number.
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    List Element
USB RS485 Optical Isolated Converter V1.0 3D Accent

USB RS485 converter

Specifications


  • USB interface: Fully compliant with V1.0, 2.0 specifications.
  • USB to serial bridge controller.
  • Powered by FTDI FT232RL.
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    RS485 signal: Differential 2 half-duplex wires (D+, D-).
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    Data Format: Asynchronous data with all common combination of bits, parity, stop.
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    Parity type: None, odd, even mark, space.
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    Data bit: 7, 8.
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    Stop bits: 1, 2.
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    Flow Control: None, Xon/Xoff, Hardware.
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    Communication speed: form 1200 bps to 57.6K bps.
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    Adjustable USB transfer sizes for TX and RX from 64 bytes to 4096 bytes
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    Adjustable latency timer 1 to 255 msec
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    Adjustable read and write timeouts 0 to 10000 msec
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    RS485 line protection: Against surge, short circuit, and voltage peak.
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    Transmission distance: RS485 Up to 4000ft (1200M).
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    Connection type: DB9
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    Signal LED: TX, RX.
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    Direct power from USB port.
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    Power consumption: 1.2W.
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    Isolation voltage: 1000V DC.
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    Operating environment: 0 to 50℃.
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    Storage temperature: -20 to 70℃.
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    Humidity: 10-90% non-condensing.
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    Dimension: 72 mm X 43 mm X 24 mm.
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    Weight: 60 g.
USB RS485 Optical Isolated Converter V1.0 dimensions
USB RS485 Optical Isolated Converter V1.0 RS485 Output

USB RS485 converter

How to connect converter


RS485 Connection Scheme