USOTL4-1405 - 1/2
© 2004 by B&B Electronics. All rights reserved.
pn 5253-r4
B&B ELECTRONICS
Model USOTL4
Connect and Isolate an RS-485/RS-
422 Network to the USB Port
CE
The
USOTL4
is a USB (Universal Serial Bus) port to 2 or 4 wire isolated RS-485/422 converter. This converter requires
no PCI/ISA slots or IRQs. Simply plug the converter into an available USB port on your computer or hub. Windows will
configure the converter as an additional COM port, compatible with your Windows applications. The serial port side can
be set up for an RS-422 or RS-485 network. A pair of LEDs shows when RS-485/422 data is being received or
transmitted. The USB side permits quick setup. Just plug in the USOTL4 and Windows will install the drivers and set up
the converter. USB bus supplies power so no separate power supply is needed. 2000 volt RMS of isolation.
Installation for Windows
#1.
Plug the USOTL4 into an available USB port on your
computer or connected hub. The screen above appears,
telling you that there is a new device plugged into the USB
bus. Click on the
Next>
button.
#2.
The screen above appears. Make sure
Search for the
best driver for your device
is selected. Then select the
Next>
button.
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707 Dayton Road PO Box 1040 Ottawa, IL 61350 USA
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PRODUCT INFORMATION
#4.
The screen above appears. Make sure
Model
USOTL4 (B&B’s USB to Isolated RS-485)
is listed as
the device. Then select the
Next>
button.
#3.
The screen above appears. Make sure
CD-ROM drive
is selected. Insert the
USOTL4 Driver
CD into the CD-
ROM drive. Then select the
Next>
button.
