B&B Electronics P#8506R2 quick start Verifying Installation, Dip Switch Setting, Pinouts

4 Verifying Installation

1.To verify the installation went correctly open the Windows Device Manager

Scroll down to Ports,

Expand the ports by clicking on the plus sign (+), this shows if the ports now exist on the PC.

If there are no exclamation points or other indicators of a problem the ports should be installed correctly and ready for use.

2.Verifying with a loopback test.

If the device is RS-232, loopback pins 2 and 3. If the device is RS-422 or RS-485, loopback the TDA(-) to RDA(-) and TDB(+) to RDB(+). Use the pin-out charts for the location of each pin or terminal.

Using Hyper Terminal or similar program, connect to the appropriate COM port. Set the desired baud rate. Ensure Hyper Terminal local echo is OFF. (Note:

Hyper Terminal is not provided with Vista or 2003 Server)

Transmit data. If the same character string is returned, the test is good.

5 Dip Switch Setting

Note: For models with selectable RS-422/485 configurations

Dip switches allow the module to be configured for two-wire or four-wire, RS-422 or RS-485 modes. In two-wire mode the TDA (-) and RDA (-) are tied together and so are TDB (+) and RDB (+), making multi-dropping this converter into an existing network easy.

Dip Sw itch Settings

Sw itch	Off (left)	On (right)
1	RS-422	RS-485
2	ECHO ON	ECHO OFF
3	4-Wire	2-Wire
4	4-WIre	2-Wire

6 Pinouts

P#8506R2 ULINX 1&2 PORT_0712qsg

DB9 Female

RS-485 Pinout (DB9 Female)

Pin	RS-485, 4 Wire	RS-485, 2 Wire
1	Not Used	Not Used
2	Receive RDA (-) Input	Data A (-) Input / Output
3	Transmit TDB (+) Output	Data B (+) Input / Output
4	Ground	Ground
5	Not Used	Not Used
6	Ground	Ground
7	Receive RDB (+) Input	Data B (+) Input / Output
8	Transmit TDA (-) Output	Data A (-) Input / Output
9	Not Used	Not Used

DB9 Male

RS-232 and TTL Pinout (DB9 Male DTE)

TO PC

RS-232

TDA(-) USB TDB(-) RDA(-)

RDB(-)

GND

RS-485

RS485 Pinout (Terminal Blocks)

Terminal
Position	RS-485, 4 Wire	RS-485, 2 Wire
A	Transmit TDA (-) Output	Data A (-) Input / Output
B	Transmit TDB (+) Output	Data B (+) Input / Output
C	Receive RDA (-) Input	Data A (-) Input / Output
D	Recieve RDB (+) Input	Data B (+) Input / Output
E	Ground	Ground

		RS-232	TTL
PIN	Signal Name	Signals	Signals
1	DCD (Data Carrier Detect)	Input	Not Used
2	RD (Receive Data)	Input	Input
3	TD (Transmit Data)	Output	Output
4	DTR (DTE Ready)	Output	Not Used
5	SG (Signal Ground)	Ground	Ground
6	DSR (DCE Ready)	Input	Not Used
7	RTS (Request to Send)	Output	Output
8	CTS (Clear to Send)	Input	Input
9	RI (Ring Indicator)	Input	Not Used

NOTE: To remove drivers from a PC, there is an Uninstall reference document on the CD ROM.