USB to 2-Port RS422 / RS485 Converter, Isolated


    Model: U485G

£53.50

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What we have here is a fully optical isolated industrial strength USB to RS485 / RS422 converter which is ideal for most industrial and commercial applications and environments. The converter is powered through the USB port so no additional power source is required.

Industrial Grade Features

  • Optical isolation is achieved with high speed 6N137 isolation opto-couplers from Fairchild Semiconductors which offers protection for up to 700V continuous voltage and 3500V spike.
  • Each serial communication port has electrostatic protection for up to 400W surge and 15KV static electricity.
  • Built-in standard 35mm DIN rail mounts makes it easy to install this converter into any enclosure or cabinet with a DIN rail. Alternatively the converter can be screw mounted.
  • Built-in 120 ohm terminal resistor which can be enabled or disabled by a slide switch on top of the converter.

Solid Performance

This converter is designed around the high quality FT232BL processor chip from FTDI Semiconductors which ensures high performance and reliability.
It is a great choice for industrial and commercial applications for general use at point-to-point or RS485 multi-point networks. Up to 32 nodes are supported in true multi-drop networks.

The converter has one RS485 port and one RS422 port. Only one port can be used at a time. Which port is in use (RS485 or RS422) is determined by the slide switch on top of the converter.

Multiple converters can be connected to the same computer without problems. Each converter will then create one virtual COM port which will show up in your computer's Device Manager after the drivers has been installed. Drivers updated frequently and are fully WHQL compliant and works with all versions of Windows, Linux and Mac.

Overall features
  • Optically isolated up to 700 / 3500V
  • RS485 / RS422 selectable by switch
  • DIN rail and screw mountable
  • Terminal resistor built-in switch
  • USB port powered
  • Reliable industrial grade design
Resources


Useful optional accessories
(not included)

db9 terminal board
Terminal board


Null modem adapter
Null modem adapter


DB9 to RJ45 adapter
DB9 - RJ45 adapter


DB9 gender changer
Gender Changer


SPECIFICATIONS
Part number U485G
Operating system
  • Windows 10 (32/64-bit), Windows 8.1 32/64, Windows 8 32/64, Windows 7 32/64, Vista 32/64, XP 32/64, Server 2003/8R2 32/64, 2000, ME, 98Se (WHQL compliant)
  • Linux
  • Mac OS 8, OS 9, OS X
  • Windows CE.NET (Version 4.2 and greater)
  • Android
Processor FTDI FT232BL
Interface Screw terminals
Indication lights RX, TX and Power
Installation 35mm DIN mount or screws
RS422/RS485 selection Manual switch
Fail-safe bias resistors Yes
USB cable length 58cm (23 inches)
USB interface Standard Type A Male
Ports 1-port available for RS485 and RS422
Signals
  • Output 1: 2-wire half duplex RS485: D+, D-, GND
  • Output 2: 4-wire full duplex RS485: TX+, TX-, RX+, RX-, GND
Baud rate 300-921.600bps (up to 3kbps by using alising)
Parity None, Odd, Even, Mark, Space
Data Bits 7, 8
Stop Bits 1, 2
TX / RX buffer size 256 Byte Transmit Buffer / 128 Byte Receive Buffer
Adjustable USB transfer sizes for TX and RX From 64 bytes to 4096 bytes
Adjustable latency timer 1 to 255 msec
Adjustable read and write timeouts 0 to 10000 msec
Flow Control None, Xon/Xoff, Hardware
COM port accessible by Included virtual COM port drivers or FTD2XX.DLL
Special features
  • Compatible with Modbus RTU/ASCII, BACnet
  • Supports non-standard baud rates
  • Automatic Send Control
  • Built-in terminal resistor (120 ohm, selectable by slide switch)
Optical Isolation 700V continuous and 3500V spike
Electrostatic (ESD) protection 400W surge protection, 15KV static electricity protection
Current draw Static: less than 80mA. Dynamic average: less than 150mA
Interface compliance USB1.1,2.0,3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Working temp -20 to 70C
Size 85mm x 55mm x 25mm
Warranty 1 year limited warranty

For alternative USB to serial RS485 and RS422 solutions please see our full selection of USB to Serial RS485 converters

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