Allen-Bradley DH485/RS-232C Bedienungsanleitung

Review Document

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Publication 1747-IN006A-US-P

Installation Instructions

DH485/RS-232C Interface Module

(Catalog Number 1747-KE)

Inside… page

Important User Information....................................................... 2

For More Information................................................................ 3

Hazardous Location Considerations.......................................... 4

Environnements dangereux........................................................ 4

Interface Module Overview....................................................... 5

Hardware Features..................................................................... 5

Using a Modem with Your Interface Module............................ 8

Choosing the Module’s Functionality........................................ 9

Setting the Module’s Functionality............................................ 9

Configuring the CONFIG Port ................................................ 11

Configuring the DF1 Port ........................................................ 12

Installing the Module............................................................... 13

Complete the Installation Process............................................ 19

Specifications........................................................................... 21

Allen-Bradley

Review Document

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2DH485/RS-232C Interface Module

Publication 1747-IN006A-US-P

Important User Information

Because of the variety of uses for the products described in this publication, those

responsible for the application and use of this control equipment must satisfy

themselves that all necessary steps have been taken to assure that each

application and use meets all performance and safety requirements, including any

applicable laws, regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown in this

guide are intended solely for purposes of example. Since there are many

variables and requirements associated with any particular installation,

Allen-Bradley does not assume responsibility or liability (to include intellectual

property liability) for actual use based upon the examples shown in this

publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,

Installation, and Maintenance of Solid-State Control (available from your local

Allen-Bradley office), describes some important differences between solid-state

equipment and electromechanical devices that should be taken into consideration

when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or in part,

without written permission of Allen-Bradley Company, Inc., is prohibited.

Throughout these installation instructions we use notes to make you aware of

safety considerations:

Attention statements help you to:

• identify a hazard

• avoid the hazard

• recognize the consequences

ATTENTION

Identifies information about practices or circumstances that

can lead to personal injury or death, property damage or

economic loss.

IMPORTANT

Identifies information that is critical for successful application

and understanding of the product.

Review Document

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3DH485/RS-232C Interface Module

Publication 1747-IN006A-US-P

For More Information

Related Publications

How to Get More Information

If you would like a manual, you can:

• download a free electronic version from the internet at

www.theautomationbookstore.com

• purchase a printed manual by:

–contacting your local distributor or Rockwell Automation representative

–visiting www.theautomationbookstore.com

and placing your order

–calling 1.800.963.9548 (USA/Canada) or

001.330.725.1547 (Outside USA/Canada)

For Refer to this Document Pub. No.

A more detailed description on how to

install and use your RTD/Resistance

Input Module.

DH485/RS-232C

Interface Module User

Manual

1747-6.12

A more detailed description on how to

install and use your modular SLC 500

system.

SLC 500™ Modular

Hardware Style

Installation and

Operation Manual

1747-6.2

A more detailed description on how to

install and use your fixed SLC 500

system.

SLC 500™ Fixed

Hardware Style

Installation and

Operation Manual

1747-6.21

A reference manual that contains status

file data, instruction set, and

troubleshooting information.

SLC 500™ and

MicroLogix™ 1000

InstructionSetReference

Manual

1747-6.15

Allen-Bradley

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4DH485/RS-232C Interface Module

Publication 1747-IN006A-US-P

Hazardous Location Considerations

This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or

non-hazardous locations only. The following WARNING statement applies to

use in hazardous locations.

Environnements dangereux

Cet équipement est conçu pour être utilisé dans des environnements de Classe 1,

Division 2, Groupes A, B, C, D ou non dangereux. La mise en garde suivante

s’applique à une utilisation dans des environnements dangereux.

WARNING

EXPLOSION HAZARD

• Substitution of components may impair suitability for Class

I, Division 2.

• Do not replace components or disconnect equipment unless

power has been switched off.

• Do not connect or disconnect components unless power has

been switched off.

• All wiring must comply with N.E.C. article 501-4(b).

MISE EN

DANGER D’EXPLOSION

• La substitution de composants peut rendre cet

équipement impropre à une utilisation en environnement

de Classe 1, Division 2.

• Ne pas remplacer de composants ou déconnecter

l'équipement sans s'être assuré que l'alimentation est

coupée.

• Ne pas connecter ou déconnecter des composants sans

s'être assuré que l'alimentation est coupée.

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Interface Module Overview

The DH485/RS-232C Interface Module, catalog number 1747-KE, is a

communication interface module that acts as a bridge between DH485 networks

and devices requiring DF1 protocol. The DF1 port on the interface module can be

configured for RS-232/423, RS-422, or RS-485 devices.

Residing in an SLC 500 chassis, the module is ideally used as an interface

module, linking remote DH485 networks via a modem to a central host.

Hardware Features

The following illustration displays the main hardware features.

Link

Coupler Remote Network

DH485

DH-485/RS-232C

SLC 500

INTERACE MODULE

CAT SER

SERIAL NO. FRN 12345

6789

CONFIG 12345

6789

DF1 DH485

CONFIG

DF1

DH485

LEDs

Door

JW1

JW2

JW4

Mother

Board

Daughter

CONFI

G Port

DF1

Port

DH485

Port

Battery

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Communication Ports

CONFIG - used to configure the module with an ASCII terminal. This serial port

accommodates RS-232/423, RS-422, and RS-485 communication interfaces. The

CONFIG port is capable of operating at 300, 600, 1200, 2400, 4800, 9600, and

19200 baud. It is electrically isolated to 500V dc.

DF1 - used to interface the module to a modem or other user devices using DF1

protocol. This serial port accommodates RS-232/423, RS-422, and RS-485

communication interfaces. The DF1 port is capable of operating at 300, 600,

1200, 2400, 4800, 9600, and 19200 baud. It is electrically isolated to 500V dc.

DH485 - used to interface the module with the DH485 network. This port is not

isolated and cannot directly drive a multi-node DH485 network. You must use a

1747-AIC link coupler to connect this port to a DH485 network that includes

multiple SLC 500 processors.

The catalog number 1747-C11 or catalog number 1747-C13 cables can connect

the interface module’s DH485 port to a 1747-AIC link coupler. The catalog

number 1747-C13 cable can also connect the module’s DH485 port directly to a

single SLC processor.

LEDs

There are eight LEDs on the front of the module. These LEDs are used for

module diagnostics and operator interface. Shown below are the LEDs and their

descriptions.

DH485/RS-232C

ACT

485

CFG

DF1

FAULT

BA LOW

H/D

F/D

INTERFACE

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LED Color Status Indication

ACT Green ON(1)

(1) Indicates normal operation after the module has been configured.

The module is receiving power from the

backplane, is configured properly, and is in Run

mode.

Flashing The module requires configuration or is being

configured.

OFF The module is not receiving power from the

backplane. A fault condition exists.

485 Green ON The DH485 port is active on the network.

OFF The DH485 port is not active on the network or

the module is in Configuration mode.

CFG Green Flashing The CONFIG port is transmitting or receiving

signals.

OFF The CONFIG port is not transmitting or

receiving signals.

DF1 Green Flashing The DF1 port is transmitting or receiving

signals. (The flashing may occur so rapidly that

the LED appears to be on.)

OFF The DF1 port is not transmitting or receiving

signal,s or the module is in Configuration mode.

FAULT Red ON A system problem was detected during

diagnostics. Cycle power to reset. If LED

remains on, contact your Allen-Bradley

representative.

OFF No system problems are detected during

diagnostics.

BA LOW Red ON The voltage of the battery that backs up

configuration RAM is low. A new battery is

needed.

OFF The voltage of the battery that backs up

configuration RAM is at an acceptable level.

H/D Amber ON The module is configured for Half-Duplex DF1

protocol (local or remote).

OFF The module is not configured for Half-Duplex

DF1 protocol.

F/D Amber ON The module is configured for Full-Duplex DF1

protocol.

OFF The module is not configured for Full-Duplex

DF1 protocol.

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Jumpers

JW1 allows you to select the communication interface for the CONFIG port. See

page 11.

JW2 allows you to select the communication interface for the DF1 port. See page

12.

JW4 allows you to select the functionality and mode of the interface module.

The horizontal or vertical orientation of the jumper determines the module’s

functionality.

The position of the jumper determines the module’s mode (Configuration or

Run), and thus, which method is used to configure the module (ASCII terminal

or backplane communications). See page 10.

Using a Modem with Your Interface Module

The module can be connected to most types of dial-up networks or direct connect

modems.

The types of modems you can use are:

•Manual - typically acoustically coupled modems. A person on each end of the

phone line establishes the connection. They then insert the handsets into an

acoustic coupler to complete the connection.

•DTE Controlled Answer - these unattended modems are attached directly to

the phone lines. The interface module acts as the Data Terminal Equipment

(DTE), which controls the modem via the DTR, DSR, and DCD signals. The

module incorporates time-outs and tests to properly operate these types of

modems.

•Auto Answer - These modems have self-contained time-outs and tests. They

can answer and hang up the phone automatically. The module has no means of

controlling an auto-dial modem, but it can be used in conjunction with a

separate auto–dialer.

•Direct Connect - These modems connect to a dedicated, leased phone line and

remain active at all times.

IMPORTANT

Some modems are designed to respond to the DTR signal by

answering the phone whether it is ringing or not. Since the

module asserts DTR at all times (except during the hang-up

sequence), the phone appears to be busy at all times. Do not

use the interface module with any type of modem that answers

the phone as soon as DTR is asserted.

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Choosing the Module’s Functionality

Your series B interface module has the ability to function as a series A interface

module. This feature may be important to you if you are replacing a series A

module with a series B module.

The module’s functionality depends on the placement of the JW4 jumper.

Horizontal placement of the jumper gives the module functionality equivalent to

a series A interface module, while vertical placement of the jumper accesses the

added functionality of a series B interface module.

Setting the Module’s Functionality

Setting the module’s mode depends on which method you want to use to

configure the module. You can configure the module using:

• an ASCII terminal

• backplane communications

IMPORTANT

You can only use backplane communications if you selected

series B functionality for the module.

Series A Functionality

(Mod. Config. ID = 4209)

Series B Functionality

(Mod. Config. ID = 3509)

Horizontal

Configuration Horizontal

Run Mode Vertical

Configuration Vertical

Run Mode

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10 DH485/RS-232C Interface Module

Publication 1747-IN006A-US-P

If Configuring with an ASCII Terminal

Configuration of the interface module with an ASCII terminal is allowed only

when the JW4 jumper is in Configuration mode. Place the module in the

Configuration mode that corresponds to the functionality you chose for the

interface module, as shown below.

If Configuring Through the Backplane

Reading and writing configuration data through the backplane is allowed only for

series B interface modules, and then only when the JW4 jumper is in the vertical

Run mode position. Place the module in vertical Run mode as shown below.

For Series A FunctionalityFor Series B Functionality

Horizontal Configuration Vertical Configuration

JW4 JW4

JW4

Vertical Run

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