Product Overview; Loopback Test - B+B SmartWorx USOPTL4-2P Quick Start Manual

Product Overview

Front
USB Port
Power
Terminal
Block
1
Install Drivers
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.
2
Set Dip Switches
Rear
OFF=left
DIP Switch Position
Switch
TD always enabled
1
(TD 422)
RD always enabled
2
(ECHO ON)
4-wire mode
3
(4-Wire)
4-wire mode
4
(4-Wire)
3
Wire the Converter
2-Wire RS-485
o All DIP Switches = ON
ON=right
OFF ON
TD only enabled during data
transission (TD 485)
RD disabled during data trans-
mission (ECHO OFF)
2-wire mode (2-Wire)
2-wire mode (2-Wire)
4-Wire RS-422/485
o RS-422 = All DIP Switches OFF
o RS-485 = DIP 1 ON, DIP 2, 4 and 4 OFF
4

Loopback Test

Set the device for RS-485 (4-Wire). Loopback the
TDA(-) to RDA(-) and TDB(+) to RDB(+). Using
Hyper Terminal or similar program, connect to
the appropriate 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.
5
Check LEDs
When everything is installed and connected the
LEDs will blink to let you know that data traffic is
passing through the converter.