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7
Loopback Test
You can perform a loopback test by connecting either
an RS-232 to RS-422/485 converter or a USB to RS-
422/485 converter to the 4WSD9R(4WSD9TB).
Using HyperTerminal or a similar program, connect to
the appropriate COM port. Remember to set the baud
rate to 9600. Turn off HyperTerminal local echo. Start
typing. If you can see the data you are typing, the
loopback is successful.
8
Biasing
Bias is provided by 4.7kΩ pull-up/down resistors on
the Data-In lines. This value is adequate for most
applications without termination. If another value is
required, space is provided on the PC for through-hole
resistor placement (R12, R21, R14, and R23).
Document Number: 710-10715-00_r1_4WSD9x_4617qsg
Recommended Accessories
12VDC, 6W Power Supply, 2.5mm Plug,
International AC Input
# SMi6-12-P230-C1
DB9 Male to DB9 Female Cable,
1.8 m (6 ft) length
# 9PAMF6
1-888-948-2248 | Europe: +353 91 792444
advantech-bb.com
707 Dayton Road | PO Box 1040 | Ottawa, IL 61350
Phone: 815-433-5100 | Fax: 815-433-5109
www.advantech-bb.com | E-mail: support@advantech-bb.com
QUICK START
GUIDE
Models 4WSD9R, 4WSD9TB
Port-Powered RS-232 to RS-485 Converter
Before you begin, be
sure you have the following:
+ RS-232/485 Isolated Converter
(#4WSD9R or #4WSD9TB)
+ DB9 to DB9 Adapter Cable (not included)
+ 12VDC, 6W Power Supply (not included)
www.advantech-bb.com
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Related Manuals for B+B SmartWorx 4WSD9R
Summary of Contents for B+B SmartWorx 4WSD9R
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Page 1: Loopback Test
You can perform a loopback test by connecting either QUICK START an RS-232 to RS-422/485 converter or a USB to RS- 422/485 converter to the 4WSD9R(4WSD9TB). GUIDE Using HyperTerminal or a similar program, connect to the appropriate COM port. Remember to set the baud rate to 9600. -
Page 2: Product Overview
RS-485 2-Wire Half-Duplex Getting Started SWITCH # POSITION RS-485 Models 4WSD9R & 4WSD9TB convert RS-232 signals to Echo Off RS-422/RS-485 and vice versa. RS-232 TD signals are 2-wire converted to balanced RS-422 or RS-485 signals. RD RS- 422/485 signals are converted to RS-232.