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RS422 to USB Converter w/ RS485, Mini PRO


  • Model: MWE820A
  • In Stock

$57.95

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Description

Mini RS422 to USB converter for communicating with any RS422 or RS485 serial device. This surge and static protected RS422 to USB converter is powered from the USB port so there is no need for an external power supply.

It is designed around the high performance and very reliable CP2102 chip from Silicon Labs, so it is compatible with all versions of Windows, Mac and Linux.

This particular RS422 to USB converter is suitable for most applications, including industrial, commercial and any general office computer device. It is a bi-directional, (meaning it communicates in both directions), reliable and cost-effective converter that easily lets you connect any RS-485 or RS-422 device directly to your computer’s USB port, efficiently converting USB signals to half-duplex RS-485 or full-duplex RS-422 and vice versa.

The RS485 / RS422 end is a standard 4-screw terminal header for easy connection of single wires. Automatic send data control is enabled by default so no external flow or handshake control is needed. LED indications lights makes it easy to see if data is present on the communications lines and when power is applied to the converter.

Point to point or point to multipoint networks with up to 32 nodes can be used with this converter.

The typical communication distance is up to 9800 FT (3km) at 4800bps and 6500 FT (2km) at 9600bps.

Overall features
  • USB port-powered converter
  • Supports RS485 and RS422
  • 2 feet USB extension cable included
  • Indication lights for RX and TX
  • Up to 32 nodes in network configuration
  • Protected against electrostatic voltages
Resources


Useful optional accessories
(not included)

Null modem adapter
Null modem adapter


DB9 to RJ45 adapter
DB9 - RJ45 adapter


DB9 gender changer
Gender Changer


SPECIFICATIONS
Part number MWE820A
Operating system
  • Windows 11, 10, Windows 8.1 / 8 (32/64-bit), Windows 7 (32/64-bit), Vista (32/64-bit), XP 32/64, Server 2003, 2000, ME, 98Se (all WHQL compliant)
  • Linux 2.6.x, 3.x.x
  • Mac OS X 10.4, 10.5, 10.6, 10.7 and 10.8.
  • Windows CE 5.0, 6.0
  • Android 4.2
Processor Silicon Labs CP2102
RS485 transceiver VP3082 (SN65HVD3082EDR)
RS485 output power 4.7VDC (between D+ and GND)
RS485 / RS422 Interface Screw terminal block
Fail-safe bias resistors Yes
Signals RS485, 2-wire half duplex: D+, D-, GND
RS422, 4-wire full duplex: TX+, TX-, RX+, RX-, GND
Compatible with Modbus RTU/ASCII, BACnet
Bias resistors Yes
USB interface Standard type A male
Indication LEDs Power, Send and Receive
Baud rate 300 to 115200bps
Parity None, Odd, Even, Mark, Space
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
TX / RX buffer size 640 byte transmit buffer, 576 byte receive buffer
Flow Control Hardware or Xon / Xoff
COM port accessible by Included virtual COM port drivers
Special features - Event character support
- Line break transmission
- Automatic Send Control
Electrostatic (ESD) protection 15KV/ 600W/ms high voltage protection
Current draw Static: less than 80mA. Dynamic average: less than 150mA
Dimensions 65 x 22 x 12mm
Interface compliance USB1.1, 2.0, 3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Operating temp -4°F to 158°F (-20°C to 70°C)
Warranty 1 year limited warranty

 


What is an RS422 to USB Converter?

An RS422 to USB converter is a compact device that bridges the gap between RS422 devices and modern computers. Most computers lack built-in RS422 ports, making this converter essential for connecting RS422 devices. By connecting an RS422 device to a computer’s USB port, this converter facilitates seamless data transfer and control. It is designed to be user-friendly, making it easy to install and operate, thus enabling efficient communication between the RS422 device and the computer.

Product Details

Key Features: Virtual COM Port

  • Converts RS422 signals to USB signals, allowing for connection to a computer’s USB port.

  • Supports high-speed data transfer rates up to 921.6 Kbps.

  • Compatible with Microsoft Windows and Linux operating systems.

  • Includes a virtual COM port for easy installation and operation.

  • Powered by the USB port, eliminating the need for an external power source.

  • Compact and rugged design, suitable for industrial and commercial applications.

  • Utilizes USB to RS422 adapters, offering high speed, compatibility with multiple devices, ease of installation, and shielding against interference, making them ideal for various industrial and monitoring applications.

Technical Specifications: High Speed

  • Interface: RS422 to USB

  • Data Transfer Rate: Up to 921.6 Kbps

  • Operating System: Microsoft Windows, Linux

  • Power Source: USB port

  • Dimensions: Compact and rugged design

  • Temperature Range: 0°C to 70°C

  • Humidity: 0% to 95% non-condensing

Applications and Uses: Connecting to Most Computers

RS422 to USB converters are versatile tools used in various industrial and commercial settings. They are ideal for:

  • Connecting RS422 devices to a computer’s USB port using USB to RS422 adapters, which offer high speed, compatibility with multiple devices, and ease of installation.

  • Adding RS422 ports to a computer that lacks built-in RS422 ports.

  • Enabling communication between RS422 devices and a computer.

  • Controlling and monitoring RS422 devices from a computer.

  • Using RS422 devices with a laptop or other mobile device.

Benefits of Using an RS422 to USB Converter

Using an RS422 to USB converter offers numerous advantages:

  • Simplifies adding RS422 ports to a computer.

  • Enables high-speed data transfer rates.

  • Compatible with a wide range of operating systems.

  • Easy to install and use.

  • Compact and rugged design, suitable for industrial and commercial applications.

  • Eliminates the need for an external power source.

  • Supports virtual COM port for easy installation and operation.

Selecting the Right Converter

When choosing a USB to RS422/RS485 converter, several factors should be considered to ensure the right device is selected for your specific application. Here are some key considerations:

  • Number of Ports: Determine how many RS422/RS485 ports are required. Some converters offer a single port, while others provide multiple ports.

  • Port Type: Decide whether a DB9M connector or a terminal block is needed. Terminal blocks are often preferred in industrial applications for their ease of use and reliability.

  • Operating System Compatibility: Ensure the converter is compatible with your computer’s operating system, whether it’s Microsoft Windows, Linux, or another OS.

  • Baud Rate and Data Formats: Consider the required baud rate and data formats for your application. Some converters offer programmable baud rates and data formats for flexibility.

  • Power Requirements: Determine if the converter can be powered solely by the USB port or if an external power source is required.

  • Environmental Factors: Consider the operating temperature range and whether the converter is designed for use in harsh environments.

  • Software and Drivers: Check if the converter comes with easy-to-install drivers and software for convenient operation.

Troubleshooting and Support Resources

If issues arise with your USB to RS422/RS485 converter, several resources are available to help troubleshoot and resolve problems:

  • Manufacturer Support: Contact the converter’s manufacturer for technical support, documentation, and FAQs.

  • Online Forums and Communities: Participate in online forums and communities related to serial communication and USB converters to connect with other users and experts.

  • Driver Updates: Regularly check for driver updates to ensure the converter is running with the latest software.

  • Troubleshooting Guides: Refer to troubleshooting guides provided by the manufacturer or online resources to help identify and resolve common issues.

  • Warranty and Repair: Check the converter’s warranty and repair options in case of hardware failure or damage.

 



Read the Review
Date Added: 11/23/2014 by Ron Julian
4 of 5 Stars!4 of 5 Stars!
works! .. and thanks for the speedy shipping..

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Date Added: 04/13/2013 by Chris Hauser
5 of 5 Stars!5 of 5 Stars!
Nice little converter, works without problems with our temp controllers. Would have been nice with a...

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Date Added: 07/14/2011 by David Smith
5 of 5 Stars!5 of 5 Stars!
absolutely satisfied! this little rs485 converter might be a little pricy but its well worth it. As ...

Read the Review
Date Added: 07/12/2010 by Mike Johnson
5 of 5 Stars!5 of 5 Stars!
works fine with windows 7. definately a useful little adapter considering the price

Read the Review
Date Added: 01/03/2010 by Jack Zane
4 of 5 Stars!4 of 5 Stars!
Very convenient and small converter. Works fine with my application.

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