Advantech BB-485DRCI-PH Manuel utilisateur

www.advantech.com

707 Dayton Road | PO Box 1040 | Ottawa, IL 61350 USA

Phone: 1 (888) 948-2248 | 1 (815) 433-5100

www.advantech.com | E-mail: support@advantech-bb.com

Fast and easy on the web:

www.advantech.com

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Document Number: 20BB710-10773-00_r3_485DRCI-PH_1021qsg

Before you begin, be

sure you have the following:

Model BB-485DRCI-PH

3-Way Isolated RS-232 to

RS-422/485 Converter

+ BB-485DRCI-PH Converter

+ 10 to 48 Vdc Power Supply

QUICK START

GUIDE

Connecting a Signal Ground

(common, reference) on the RS-422/485 side.

The specications for most RS-422 and RS-485

devices indicate that the device can withstand a

maximum VCM of -7 Volts to +12 Volts. The function of

the GND connection is to tie the signal grounds of all

nodes on a network to one common ground potential.

This ensures that the common mode voltage cannot

exceed the specied value.

A signal ground is required on Model BB-485DRCI-

PH because it is an optically isolated device. If you do

not have a signal ground (common, reference) on your

RS-422/485 device, you can connect to the DC power

ground of your RS422/485 device.

Caution: Make sure that this is connected correctly.

Note: Do Not use the shield drain wire as the signal

ground between RS-422/485 devices.

SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS

A, B, C AND D HAZARDOUS LOCATIONS, OR

NONHAZARDOUS LOCATIONS ONLY.

CONVENANT À L’EMPLOI DANS LES SITES DANGEREUX

DE CLASSE I, DIVISION 2, GROUPES A, B, C ET D, OU

DANS LES SITES NON HASARDEUX SEULEMENT.

WARNING - EXPLOSION HAZARD - SUBSTITUTION OF

ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS

I, DIVISION 2.

ATTENTION - DANGER D’EXPLOSION - LA

SUBSTITUTION DE COMPOSANTS PEUT ENTRAÎNER

UNE ADÉQUATION À LA CLASSE I, DIVISION 2.

WARNING - EXPLOSION HAZARD - DO NOT

DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS

LIVE OR UNLESS THE AREA IS KNOW TO BE FREE OF

IGNITABLE CONCENTRATIONS.

ATTENTION - DANGER D’EXPLOSION - LA SUBSTITUTION DE

COMPOSANTS PEUT ENTRAÎNER UNE ADÉQUATION À LA

CLASSE I, DIVISION 2.

Field wiring connections must be made using 105 °C minimum

copper supply wires.

Les connexions de câblage sur site doivent être réalisées en

utilisant des câbles d’alimentation en cuivre de 105 °C minimum.

To be installed in accordance with control drawing 8512r001.

Pour être installé conformément au dessin de contrôle 8512r001.

UL Class 1/Div. 2 Information

Troubleshooting

For an explanation of RS-485 termination and biasing requirements,

refer to Advantech’s RS-422/485 Application Note. This publication

can be downloaded at: www.advantech.com

Switch position 8 is not used.

Set the DIP Switches

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

Use Built-in 120Ω Termination ON

Use External or No Termination OFF

Data

LEDs

Power

LED

DB9

Port

Data

LEDs

Terminal

Block

DIP

Switches

10 to 48 Vdc

1.9 W max.

Grounding the unit is recommended.

Connect a grounding wire from the ground lug

to a good source of Earth Ground.

Ground

Lug

BUILT-IN TRANSMIT BIAS RESISTOR SWITCH

Use External or No Bias Resistor ON

Use Built-in 1.2KΩ Transmit Bias Resistor OFF

BUILT-IN RECEIVE BIAS RESISTOR SWITCH

Use External or No Bias Resistor ON

Use Built-in 1.2KΩ Receive Bias Resistor OFF

TERMINAL RS-485 2-WIRE RS-422/485 4-WIRE

A*** TDA (-)

B*** TDB (+)

CData A (-) RDA (-)

DData B (+) RDB (+)

EGND GND

DIP SWITCH RS-422/485 4-WIRE

1 234567

ON/OFF OFF OFF OFF *** *** ***

Position 1 = ON for RS-485, OFF for RS-422.

Positions 5, 6, 7 are used for termination and biasing.

DIP SWITCH RS-485 2-WIRE

1 2 3 4 5 6 7

ON ON ON ON x x x

Positions 5, 6, 7 are used for termination and biasing.

• Congure 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 HyperTerminal or a similar program, con-

nect to the appropriate COM port.

• Turn o󰀨 HyperTerminal local Echo.

• Transmit data. The same data should be re-

turned. When data is sent and looped back, the

TD and RD LEDs will blink on both ports.

LEDs

Power LED Red = ON when power is applied.

Data LEDs Green = LEDs ash when data is present on port.

Wiring Converter & Device

Loopback Test

Check LEDs

Product Overview

DB9 PINOUTS

PIN SIGNAL DIRECTION

1DCD ***

2RD Output

3TD Input

4DTR ***

5GND ***

6DSR **

7RTS ***

8CTS ***

9RI ***

TERMINAL BLOCK

POSITION SIGNAL

AGround

BRDB (+)

CRDA (-)

DTDB (+)

ETDA (-)

RS-485 2-Wire RS-485/422 4-Wire

Your Device Your DeviceBB-485DRCi BB-485DRCi

DATA

B (+)

DATA

A (-)

GND

TDA

(-)

BTDB

(+)

RDB

(+)

RDA

(-)

GND

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