RS485/422 to USB converter

The BF-850 is a RS485/RS422 to USB adapter designed to provide instant connection from Serial interface to PC or server. The device follows USB/RS422 and RS485 standards and policies and is easily installed without turning you PC’s power off. 


There is a unique I/O electric auto-control to control the direction of data transfer. No handshake signal is needed to transfer full duplex (RS422) or half duplex (RS485).


The BF-850 can be used in point to point or multipoint applications. In multipoint use, each unit adapter can connect up to 32 RS422/RS485 interface devices.


With the USB Plug-and-Play feature, you simply plug in, follow the instructions of Install Wizard. You don’t have to deal with Card Slots, I/O address, IRQ jumpers, DMA and others when you are connecting the devices. The System will recognize the device and install the drivers automatically.

FEATURES HIGHLIGHTS

  • One RS422/485 Port over USB Port
  • Easy Serial Port Expansion over USB Port
  • Supports 4-wire RS422 and 2-wire RS485 applications
  • Supports RS485 Auto Transceiver Turn Around
  • Supports USB Bus Power
  • Hot Swappable and Plug-and-Play Features
  • Compact Size for Critical Applications

PRODUCT SPECIFICATION


CHARACTERS T 7 or 8 data bits
CONNECTION MODES USB1.1 and USB2.0 Backward Compatible
CONNECTORS DB9/6 Screw Terminal Block
DATA RATES T 300 baud up to 921.6 Kbps
DIMENSIONS 55 x 36 x 18 mm
INTERFACES 2 modes are selectable: 4-wire RS422 (TXD+/-, RxD+/-), 2-wire RS485 (Data+/-)
MPN BF-850
PARITY odd, even, none
PRODUCT WEIGHT 0.6 oz
PROFILES Serial Port Profile (SPP)
SERIAL INTERFACES 369
SERIAL TYPES 370,371
STOP BITS 1 or 2
SUPPORTED OS Supports Windows (Win98SE, ME, 2000, XP, 2003, 2008, Vista, 7, 10)
TEMPERATURE RANGE
  • Operating: -25°C to +70°C
  • Humidity: 5% to 90 % (non-condensing)
Download

BF-850 USB converter driver

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