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Install the Drivers

1

3

2

Set DIP Switches

4

 Connect the Converter

Product Overview

Serial

Ports

LEDs

Power the Converter

USB Port

The USR602 can run on 5 V USB power if the host 
port is providing 500 mA.  It can also be powered 
via the terminal block or barrel jack port.

Set the converter to RS-232 mode using the DIP 
switches.  Loopback pins 2 and 3.  Using Hyper Termi-
nal or similar program, connect to the COM port. Set 
the desired baud rate. Ensure that Hyper Terminal 
local echo is OFF.  Transmit data.  If the same character 
string is returned, the test is good.

DIP

Switches

Terminal block
and barrel jack
power

To prevent installation errors, do not plug in the 
hardware until you have already installed the drivers. 

Use the included CD to install the converter’s drivers in 
the attached PC.

DIP 

Switches

SW# RS-232 RS-422

RS-485

4-Wire

RS-485

2-Wire

Port 1

1

Off

ON

Off

ON

2

Off

ON 

ON

Off

Port 2

3

Off

ON

Off

 ON

4

Off

ON

ON

Off

Port 3

5

Off

ON

Off

 ON

6

Off

ON

ON

Off

Port 4

7

Off

ON

Off

ON

8

Off

ON

ON

Off

When you connect the converter to the host 
computer’s USB port the Found New Hardware 
wizard will open.  It will discover and install the 
USB device.  Then it will discover and install each 
serial port.  Allow Windows to install the converter 
“Automatically.” There is no need to connect to the 
Internet or Windows Update.

If a popup window says the software has not passed 
Windows logo testing, that’s OK.  Just click on 
“Continue Anyway.”

When the wizard is complete the serial ports on the 
converter will appear in Windows Device Manager 
as new COM ports.

5

Configure the Serial Ports

Open Control Panel. Click “System” to open the 
Device Manager.  Under “Ports,” double-click the 
port to be configured. 

On the “Serial Port Properties” window, set the 
required communications parameters for the system 
with which you are communicating. If necessary, 

6

Loopback Test

7

LEDs

LED 

Type

Indication when ON

PWR

Computer is receiving adequate 

voltage and current from USB or 

power source

TX

Serial interface is transmitting data

RX

 

Serial interface is receiving data

click Advanced and set up the Advanced Properties. 
(Refer to manual for more information.)

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