[USB-304] 2 channel USB RS485/422 Converter (Independent Isolation) HuMANDATA LTD.

Overview

　USB-304 is a 2 channel USB to RS485/RS422 converter that isolated between each RS-485/422 serial port and a USB port. You can use 2 channels of RS-485/422 serial port from a USB port. Those 2 channels are isolated independently from USB side.
USB-304 has the dip switch to enable and disable the built-in 120 ohm terminal resistor. This is designed around the high performance industry proven FTDI chipset.

* Second and subsequent images are CG models

*Image with optional accessories

Features

• Supports RS-485/RS422
  2-wire or 4-wire of RS-485/RS422 selectable by the dip-switch
• Each 2 channels are independent isolation
• 2000VDC bus isolation
• Baud rate up to 12Mbps (RS422)
  • The built-in isolator IC is available for up to 16Mbps
  • There is a baud rate that can not be set at more than 6Mbps.
  • RS-422 mode: up to 12Mbps, RS-485 mode: up to 6Mbps
• Supports custom baud rate
  *When baud rates are more than 6Mbps, only 8 Mbps or 12 Mbps are supported. Please feel free to ask us about that by an inquiry form or e-mail.
• USB 2.0 High Speed (480Mbps) and Full Speed (12Mbps) compliant
• Auto transmit data control
  Built-in USB-serial chip has auto transmit controller and the driver is activated when it transmit the data
• Built-in fail-safe bias resisters
• Built-in 120 ohm terminal resistor selectable by the dip-switch
• Pluggable the screw terminal
• No external power supply is required
  USB-304 is powered through a USB port (Bus-powered)
• Reliable industrial grade design
• ESD and surge protection
• Housing material: Plastic
• DIN rail and screw mountable (Attachment is required)
• Includes a USB cable (1.8m)
• Includes an AC adapter
• Non-use of 10 Restricted substances of RoHS directive
• MADE IN JAPAN

Specification

Item	Description	Remarks
Model	USB-304
Input Power	DC 5V / Less than 200mA Supplied through a USB port (Bus-powered)	No external power supply required
Number of RS-485/422 Port	2
I/O Interface	RS-485/422 (2-wire or 4-wire)	ESD protection
HOST Interface	USB 2.0 compliant (Support Hi Speed)	USB 1.1 compatible ESD protection
USB Connector	USB B type (Female)
Isolation Method	Bus Isolation
Isolation Protection	Over 2000VDC	Designed value
Processor	FT2232H	FTDI
USB Driver	Virtual COM port driver
Baud Rate	300bps to 6M/8M/12Mbps	Support custom baud rate
Data Bits	7 or 8 bit
Stop Bits	1 or 2 bit
Parity	Even, Odd or No-parity
FIFO RX Buffer Size	4096 Bytes / ch
FIFO TX Buffer Size	4096 Bytes / ch
LED	POW　：Power LED RX   　：Receive data LED x2 TX   　：Transmit data LED x2
RS485/RS422 Connector	Detachable the screw terminal 5pin(PHOENIX CONTACT)	3.5mm pitch
Support OS	Windows 10/8.1/8/7/Vista/XP
Operating Ambient Temperature	-20 to 60℃ (-4 to 140 [°F])	No condensation permitted
Operating Ambient Humidity	30 to 85%RH	No condensation permitted
Storage Ambient Temperature	-20 to 60℃ (-4 to 140 [°F])	No condensation permitted
Storage Ambient Humidity	30 to 85%RH	No condensation permitted
Weight	Approx. 100 [g]	Only main body
Dimensions	69 x 82.5 x 30 [mm] (2.638" x 3.248" x 1.181")	Without projections

* Power saving function (suspend, standby, sleep and others) is not supported
 

Interface Termianl (RS-485/RS422 PIN ASSIGNMENT)

Package Contents

• USB-304
• USB A-B cable 1.8m
• Driver & Application CD