B&B ILinx 485DRCI-PH Quick Start Manual

Documentation Number – p/n 8931r002 485DRCI-PH-3512qsg

©2011 B&B Electronics Manufacturing Company

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1. Refer to the Nonincendive Field Wiring Apparatus
Control Drawing for important information.

2. Power, Input / output (I/O) wiring for the end use
enclosure must be in accordance with Class 1
Division 2 wiring methods (Article 501.10(B) of the
National Electric Code, NFPA 70) and in
accordance with the local authority having
jurisdiction.

3. Maximum ambient air temperature 85°C.

4. Temperature rating of field installed conductors
105°C. Use Copper Wire Only.

5. These devices must be installed in end use
enclosure suitable for the location.

6. WARNING – EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR CLASS 1, DIVISION 2.

7. WARNING – EXPLOSION HAZARD: DO NOT
DISCONNECT EQUIPMENT UNLESS POWER
HAS BEEN SWITCHED OFF OR THE AREA IS
KNOWN TO BE NON-HAZARDOUS.

8. WARNING – THIS APPARATUS IS SUITABLE
FOR USE IN CLASS 1 DIVISION 2, GROUPS A,
B, C, AND D OR NONHAZARDOUS LOCATIONS
ONLY.

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 ILinx 485DRCI-PH Serial Converter
 This Quick Start Guide
 Additional Items Required but not included

o A 10 to 48 VDC Power Supply (Converter

draws 1.9W Max).

Put

Quick Start Guide

ILinx 485DRCI-PH

Triple Isolated RS-232 to

RS-422/485 Converter

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SWITCH POSITION 8 IS NOT USED

Highlighted settings indicate factory default.

Communications Mode

Switch

1 2 3 4

RS-485

2-Wire

Half Duplex

ON

ON

ON

ON

RS-485

4-Wire

Full Duplex

ON

OFF

OFF

OFF

RS-422

Full Duplex

OFF

OFF

OFF

OFF

Built-in Termination Resistor

Switch

5

Use the 120Ω Built-in Termination

ON

Use External or No Termination

OFF

Built-in Transmit Bias Resistor

Switch

6 Use External or No Bias Resistor

ON

Use the 1.2K Ω Transmit Bias Resistor

OFF

Built-in Receive Bias Resistor

Switch

7 Use External or No Bias Resistor

ON

Use the 1.2K Ω Receive Bias Resistor

OFF

For an explanation of RS-485 termination and biasing
requirements, refer to B&B Electronics’ RS-485
application note. This publication can be downloaded
at: www.bb-elec.com

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Front Panel

Back Panel

Front and Back Panel

A

Power LED

Red, ON When Power Applied

B

DB9 Female

RS-232 (Wired DCE)

C

422/485 TB

5 Position, Removable

D

Data LEDs

Green. LEDs Flash When Data is on

Port. E Ground Lug

Chassis Ground to Earth Ground

F

DIP Switch

Used to Configure

G

Power TB

2 Position, Removable

DB9 Pin-out

Documentation Number – p/n 8931r002 485DRCI-PH-3512qsg

©2011 B&B Electronics Manufacturing Company

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1. Connect Power. Power Requirements: 10 to 48 VDC,

1.9W Maximum.

2. The terminal block will accept 28 to 12 AWG Wire.

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See cable recommendation in section one.

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RS-485 2-wire

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 Configure for RS-485 Four wire.
 Jumper terminals A to C and B to D
 Connect a PC to the RS-232 port (see Step 3).
 Using hyper terminal or similar program, connect to

the appropriate COM port. Turn off hyper terminal
local echo

 Transmit data. The same data should be returned.

When data is sent and looped back, the TD and RD
LED’s will blink on both ports.

RS-422/ RS-485 4-wire

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1. It is recommended that the chassis be grounded.

2. Connect a grounding wire from the ground lug to a good

source of Earth Ground.