Product Overview
Set DIP Switches
2
DIP SWITCH POSITION
4-Wire RS-485 (full-duplex)
+ RS-422 = All DIP Switches OFF
+ RS-485 = DIP 1 ON; DIP 2, 3 and 4 OFF
Serial
USB Port LED
Connecter
DIP Switches
Install Drivers
1
Use the included CD to install the converter’s
drivers.
Warning: To prevent installation errors, do
not plug in the hardware until you have
already installed the drivers.
After connecting the device, you can check
Device Manager to learn which COM port
number was assigned (Control Panel/
System/Hardware/Device Manager/Ports LPT
& COM).
You can re-assign COM numbers by clicking
the Advanced Settings button on the Port
Settings screen.
Switch OFF (left) ON (right)
1
2
3 4-Wire Mode 2-Wire Mode
4 4-Wire Mode 2-Wire Mode
Wire the Converter
3
TD Always Enabled
(RS-422)
RD Always Enabled
(ECHO On)
TD Only Enabled During Data
Transmission (RS-485)
RD Disabled During Data
Transmission (ECHO Off)
2-Wire RS-485 (half-duplex)
+ All DIP Switches = On
2 Wire Set-up
USOPTL4(-LS) or
USPTL4(-LS)
TDA(-)
TDB(+)
RDA(-)
RDB(+)
GND
RS-485
NEG(-)
POS(+)
GND
4 Wire Set-up
USOPTL4(-LS) or
USPTL4(-LS)
TDA(-)
TDB(+)
RDA(-)
RDB(+)
GND
Loopback Test (optional)
4
• Set DIP switches 1, 3, 4 to ON.
• Set DIP switch 2 to OFF.
• Use HyperTerminal or another terminal program
to conrm passage of data through converter.
Check LEDs
5
When everything is installed and connected,
the LEDs will blink to indicate that data trafc is
passing through the converter
RS-422/485
RDA(-)
RDB(+)
TDA(-)
TDB(+)
GND
Troubleshooting
6
What baud rates can be used?
Baud rates up to 460.8 Kbps.
What operating systems are supported?
Windows 2000, XP, Vista (32/64 bit), 7 (32/64 bit), and
10 (32/64 bit).
Related Products
USB Isolator
Model UH401
QUICK START
GUIDE
Which USB cables can I use?
A 3 foot cable is included. Other lengths can be purchased
separately. The maximum range for USB is 15 feet. B+B
SmartWorx sells USB extenders if you need to go further
than 15 feet.
Can I get another terminal block for
the USB converter?
Yes. The part number is TBKT2.
How can I test the USB converter to make sure it
is working correctly?
A quick way to test the converter is to set the dipswitches to
485, Echo ON, 2-wire, 2-wire. Then use HyperTerminal to
do the loopback. Visit the B+B SmartWorx technical library
for instructions and screen shots.
Standard vs Lock Serial Number
7
Standard
Models USOPTL4 or USPTL4
Converters have unique serial numbers and assign a
unique COM port. Drivers must be installed for each
converter. A unique COM port is assigned each time.
Typical application: xed locations.
Locked Serial Number
Models USOPTL4- LS or USPTL4-LS
All converters with the same model number share a
common serial number and same COM port. The driver
only needs to be installed once; subsequent converters
install using the same COM port.
Typical application: eld service.
Document Number – 710-11248-00_ r1_USO PTL4 & USPTL4_4517qsg
4-Port USB Hub
Model UHR204
1 (888) 948-2248 | Europe: +353 91 792444
www.advantech-bb.com
707 Dayton Road | PO Box 1040 | Ottawa, IL 61350
Phone: (815) 433-5100 | Fax: (815) 433-5109
www.advantech -bb.com | E-mail: support@advantech-bb.com
USOPTL4, USPTL4,
USOPTL4-LS, USPTL4-LS
USB to RS-422/485 Converters
(Isolated, Non-Isolated, Locked Serial Number)
Before you begin, be sure you have
the following:
+ USB Serial Converter
(Model USOPTL4, USPTL4, USOPTL4-LS or
USPTL4-LS)
+ USB Cable
+ CD-ROM with Drivers
Fast and easy on the web:
www.advantech-bb.com