Advantech BB-USOPTL4 - Page 2

+ All DIP Switches = On
GND
RS-485
BB-USOPTL4(-LS) or
BB-USPTL4(-LS)
NEG(-)
POS(+)
TDA(-)
TDB(+)
RDA(-)
RDB(+)
GND
2 Wire Set-up
Product Overview
Use the included CD to install the converter’s
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.
Warning: To prevent installation errors, do
not plug in the hardware until you have
already installed the drivers.
DIP SWITCH POSITION
Switch OFF (left) ON (right)
1
TD Always Enabled
(RS-422)
TD Only Enabled During Data
Transmission (RS-485)
2
RD Always Enabled
(ECHO On)
RD Disabled During Data
Transmission (ECHO Off)
3
4-Wire Mode 2-Wire Mode
4
4-Wire Mode 2-Wire Mode
• Set DIP switches 1, 3, 4 to ON.
• Set DIP switch 2 to OFF.
• Use HyperTerminal or another terminal program
to conrm passage of data through converter.
When everything is installed and connected,
the LEDs will blink to indicate that data trafc is
passing through the converter
Check LEDs
5
USB Port LED
Serial
Connecter
DIP Switches
2-Wire RS-485 (half-duplex)
+ RS-422 = All DIP Switches OFF
+ RS-485 = DIP 1 ON; DIP 2, 3 and 4 OFF
4-Wire RS-485 (full-duplex)
RS-422/485
TDA(-)
TDB(+)
RDA(-)
RDB(+)
GND
4 Wire Set-up
RDA(-)
RDB(+)
TDA(-)
TDB(+)
GND
Install Drivers
1
Set DIP Switches
2
Wire the Converter
3
Loopback Test (optional)
4
BB-USOPTL4(-LS) or
BB-USPTL4(-LS)