B+B Smartworx USPTL4, USOPTL4-LS, USOPTL4, USPTL4-LS User Manual

Product Overview

2

Set DIP Switches

4-Wire RS-485 (full-duplex)

+ RS-422 = All DIP Switches OFF

DIP SWITCH POSITION

+ RS-485 = DIP 1 ON; DIP 2, 3 and 4 OFF

Switch

OFF (left)

ON (right)

4 Wire Set-up

1

TD Always Enabled

TD Only Enabled During Data

USOPTL4(-LS) or

RS-422/485

(RS-422)

Transmission (RS-485)

USPTL4(-LS)

Serial

TDA(-)

RDA(-)

RD Always Enabled

RD Disabled During Data

USB Port LED

Connecter

2

(ECHO On)

Transmission (ECHO Off)

TDB(+)

RDB(+)

DIP Switches

3

4-Wire Mode

2-Wire Mode

RDA(-)

TDA(-)

4

4-Wire Mode

2-Wire Mode

RDB(+)

TDB(+)

GND

GND

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.

3 Wire the Converter

2-Wire RS-485 (half-duplex)

+ All DIP Switches = On

2 Wire Set-up

USOPTL4(-LS) or				RS-485
USPTL4(-LS)
	TDA(-)				NEG(-)
	TDB(+)				POS(+)
	RDA(-)
	RDB(+)
	GND				GND

4 Loopback Test (optional)

•Set DIP switches 1, 3, 4 to ON.

•Set DIP switch 2 to OFF.

•Use HyperTerminal or another terminal program to confirm passage of data through converter.

5 Check LEDs

When everything is installed and connected, the LEDs will blink to indicate that data traffic is passing through the converter