B+B SmartWorx 485OPDR-HS Quick Start Manual

Troubleshooting

Q. What are the factory presets?
A. "2-Wire" RS-485 half duplex operation; echo off,
bias in, termination out.
Switches 1, 2, 3, 4, 5 = ON
Switch 6 = OFF.
Switches 7, 8 = Not used.
Q. I want to use "4-Wire" RS-485, but the "4-Wire"
RS-485 devices do not respond with data.
A. When this unit is used to talk to a "4-Wire" device
that does not have biasing across the RS-485 receiver
lines, it may be necessary to set the Transmitter to RS-
422 Transmit mode: Switch 1 = OFF.
This setting can be used providing that the master is
on the opposite side of the repeater. No other 4-Wire
device can be connected to the transmit lines on the
side set for RS-422 transmit. The #485OPDRI has
switches to enable separate Transmit bias & Receive
bias.

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.

LED Indicators

LED STATUS DESCRIPTION
Power present.
Both ON
No data is being sent.
Power present.
Data 1, 2
Both Flashing
Data is being sent.
Both OFF No power.
Document Number – 710-10771-00_485OPDR-HS_4316qsg

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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
485OPDR-HS
High-Speed, Isolated
RS-422/485 Repeater
Before you begin, be
sure you have the following:
+ 485OPDR-HS Repeater
+ 10-30VDC, 0.7W Power Supply
+ RS-422/RS-485 Cable
www.advantech-bb.com
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