Specifications

ManualsBrandsPromag ManualsMedia ConverterUSB485 Series

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CONTENTS

INTRODUCTION………………………………………………………………………

FEATURES……………………………………………………………………………….

SPECIFICATIONS…………………………………………………………………….

PIN ASSIGNMENT……………………………………………………………………

CONNECTIONS………………………………………………………………………..

DRIVER INSTALLATION – QUICK GUIDE…………………………………..

DRIVER INSTALLATION – EXAMPLES………………………………………..

EXAMPLE 1 (WINDOWS VISTA)…………………………………………………………………

EXAMPLE 2 (WINDOWS XP)………………………………………………………………………

EXAMPLE 3 (WINDOWS 2000)………………………………………………………………….

TROUBLESHOOTING…………………………………………………………………

GENERAL………………………………………………………………………………………………………

DRIVER REINSTALLATION EXAMPLES……………………………………………………….

SUPPORT………………………………………………………………………………..

Windows 8 / 7

For Windows 8 and 7, drivers will be installed automatically when your computer

is connected to the Internet. Alternatively, you may install the drivers from the

CD provided with the product.

USB to RS-485 Converter

Part Number: USB-485-1

Communications made easy

Revision: 1.0 www.CommFront.com Page 2 of 16

■ INTRODUCTION

The USB-485-1 is a port-powered USB to RS-485 converter that can be used to convert any standard

USB port (USB 2.0 - backward compatible) into a two-wire balanced RS-485 port and vice versa. The

unit can be used to communicate with one loop of up to 256 units of RS-485 devices and it comes

with a built-in selectable 120-Ohm terminator for system reliability and easy installation. This USB to

RS-485 converter cable is powered from the USB port and it supports data auto-sensing &

self-adjusting, therefore, no baud rate setting is required; and with the data direction

auto-turnaround technology, no flow control is necessary for RS-485 communications. The USB-485-1

uses the latest FTDI chipset and is fully compatible with Windows 8/7/Vista/XP/Server 2008/Server

2003/2000/98 (32-bit), Windows 8/7/Vista/XP/Server 2008/Server 2003 (64-bit), Win CE, Mac, and

Linux.

■ FEATURES

 Adds one RS-485 port to your USB port.

 Supports 256 nodes of 2-wire RS-485 devices.

 Rugged terminal block with built-in selectable 120Ω terminator.

 Operates reliably from 300 to 3M baud.

 Supports Windows 8/7/Vista/XP/Server 2008/Server 2003/2000/98 (32-bit), Windows 8/7/Vista

/XP/Server 2008/Server 2003 (64-bit), Win CE, Mac, and Linux.

 Supports remote wakeup and power management.

 Built-in 15kV ESD static and circuit protection.

 Port-powered, no external power required.

 Plug and play (hot-pluggable, data format auto-sensing and self-adjusting).

 Data direction auto-turnaround, no flow control is required.

 No IRQs required, no IRQ conflicts.

 Surface Mount Technology manufactured to RoHS and ISO-9001 standards.

 Safety: Strictly certified by SGS (Cert no. E1/2013/90010C; E1/2013/90011C).

 5-year manufacturer’s warranty.

■ SPECIFICATIONS

Compatibility: USB 2.0 and EIA/TIA RS-232/RS-485 standards

Power Source: From USB port

Current Consumption: Less than 60mA

RS-232 Data Rate: 300 to 3M bps (auto-sensing and self-adjusting)

Distance: USB side: 10ft (3m); RS-485 side: Up to 4000ft (1.2km) at

19,200 bps

Connectors: USB side: Type A Female; RS-485 side: DB-9 Male/5-Way

Terminal Block

LEDs: TX, RX and Power

Maximum number of drops: 256

End-of-Line Terminator: 120Ω (built-in, selectable)

Static Protection (ESD): Up to 15KV

Dimensions (H x W x D): 0.8 x 1.3 x 3.6 in (20 x 32 x 92 mm) (excluding cable)

Cable Length: 3.3 ft (1 m)

Weight: 3.8 oz (108 g)

Operating Temperature: 32ºF to 104ºF (0ºC to 40ºC)

Operating Humidity: Up to 90% RH (no condensation)

■ PIN ASSIGNMENT

RS-485 Side (DB-9 Male Connector / Terminal Block):

DB-9 Male: 1 2 5 6,7

Function: B- A+ GND Tie to turn ON the 120Ω

end-of-line terminator

Terminal Block: A+ B- G 120

Function: RS485+

RS485- GND Tie to turn ON the 120Ω

end-of-line terminator

Summary of content (8 pages)

PAGE 1
■ INTRODUCTION USB to RS-485 Converter Part Number: USB-485-1 The USB-485-1 is a port-powered USB to RS-485 converter that can be used to convert any standard Communications made easy USB port (USB 2.0 - backward compatible) into a two-wire balanced RS-485 port and vice versa. The unit can be used to communicate with one loop of up to 256 units of RS-485 devices and it comes with a built-in selectable 120-Ohm terminator for system reliability and easy installation.
PAGE 2
Important notes: 1) If it’s the first time you install the driver for CommFront’s USB to Serial device, you will need to install the driver twice. One is for “USB Serial Converter”, and the other one is for “USB Serial Port”. DO NOT close the 2nd “Found New Hardware Wizard” window while installing the driver. 2) Upon completion of driver installations, remember to check the Windows Device Manager to make sure that the drivers are installed properly (Figure 2).
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LPT)” – labeled as “USB Serial Port (COMx)”, and “Universal Serial Bus controllers” labeled as “USB Serial Converter”.  Example 2 (Windows XP) 1) Insert the CD into the drive and connect the USB-485-1 to an available USB port, the “Found New Hardware Wizard” window will pop up. Select “No, not this time” and click on the “Next” button to continue (Figure 6).
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 Example 3 (Windows 2000) 1) Insert the CD into the drive and connect the USB-485-1 to an available USB port, the “Found New Hardware Wizard” window will pop up. Click on the “Next” button to continue (Figure 10). (Figure 8) 4) When the driver is successfully installed, the following window will pop up, confirming that the driver installation of “USB Serial Converter” has been completed. Click on the “Finish” button to continue (Figure 9).
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(Figure 12) (Figure 14) 4) Windows will automatically locate the driver, for example, “e:\drivers\windows 2000_server 2003_xp_vista x32\ftdibus.inf”. Click on the “Next” button to continue (Figure 13). 6) The 2nd “Found New Hardware” window will pop up, prompting you to install the driver for “USB Serial Port”. DO NOT close this window! And repeat steps 1) to 5) to install the driver for “USB Serial Port”.
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(Figure 16) 1) Right-click on the “USB Serial Converter” that displays with the yellow exclamation icon, and select “Update Driver Software…” (Figure 16). 2) Click on the “Browse my computer for driver software” button to continue (Figure 17).
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(Figure 18) 4) When the driver is successfully updated, the following window will pop up, confirming that the driver installation of “USB Serial Converter” has been completed. Click on the “Close” button to exit (Figure 19). (Figure 20) 1) Right-click on the “USB Serial Port” that displays with the yellow exclamation icon, and select “Update Driver Software…” (Figure 20). 2) Click on the “Browse my computer for driver software” button to continue (Figure 21).
PAGE 8
(Figure 24) 3) Click on the “Finish” button to complete the un-installation of the drivers (Figure 25). (Figure 22) 4) When the driver is successfully updated, the following window will pop up, confirming that the driver installation of “USB Serial Port” has been completed. Click on the “Close” button to exit (Figure 23). (Figure 25) 4) Follow the correct driver installation procedures above to reinstall the drivers for your USB-485-1 converter. ■ SUPPORT Check out CommFront’s website: www.CommFront.