Allen-Bradley ControlLogix DeviceNet 1756-DNB Manuale utente

Publication 1756-IN566B-EN-P - April 2001

Installation Instructions

ControlLogix DeviceNet

Scanner Module

Catalog Number 1756-DNB

Use this manual as a guide to install the ControlLogix™ DeviceNet™

Scanner Module. The following table identifies what this manual

contains and where to find specific information.

Topic See Page

European Communities (EC) Directive Compliance 3

Preventing Electrostatic Discharge 4

Understand the Module’s Software Features 5

Identify Module Components 6

Prepare to Install the Module 7

Installing or Removing the Module Under Power 8

Determine Module Slot Location 9

Install the Module 10

Remove or Replace the Module 11

Wire the DeviceNet Connector 12

Connect the Module to the DeviceNet Network 13

Apply Chassis Power 13

Using the Manual Configuration Pushbutton 14

Interpreting the Alphanumeric Display 16

Interpreting the LED Status Indicators 19

ControlLogix Controller Interface 21

Hazardous Location Information 25

Specifications 27

Allen-Bradley

2ControlLogix DeviceNet Scanner Module

Publication 1756-IN566B-EN-P - April 2001

Throughout this manual we use the following notes to make you

aware of safety considerations:

Warning and Attention statements help you to:

•identify a hazard

•avoid a hazard

•recognize the consequences

We use the following note to call attention to critical information:

Change bars are used to indicate information that has changed or

been added since the previous version of these instructions.

WARNING

Identifies information about practices or

circumstances that have the potential to create an

explosion hazard.

ATTENTION

Identifies information about other 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.

ControlLogix DeviceNet Scanner Module 3

Publication 1756-IN566B-EN-P - April 2001

European Communities (EC) Directive Compliance

If this product has the CE mark it is approved for installation within

the European Union and EEA regions. It has been designed and

tested to meet the following directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EC

Electromagnetic Compatibility (EMC) by applying the following

standards, in whole or in part, documented in a technical

construction file:

•EN 50081-2 EMC — Generic Emission Standard, Part 2 —

Industrial Environment

•EN 50082-2 EMC — Generic Immunity Standard, Part 2 —

Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low

Voltage, by applying the safety requirements of EN 61131-2

Programmable Controllers, Part 2 - Equipment Requirements and

Tests.

For specific information required by EN 61131-2, see the appropriate

sections in this publication, as well as the following Allen-Bradley

publications:

•Industrial Automation Wiring and Grounding Guidelines,

publication 1770-4.1

•Automation Systems Catalog, publication B113

Open style devices must be provided with environmental and safety

protection by proper mounting in enclosures designed for specific

application conditions. See NEMA Standards publication 250 and IEC

publication 529, as applicable, for explanations of the degrees of

protection provided by different types of enclosure.

Allen-Bradley

4ControlLogix DeviceNet Scanner Module

Publication 1756-IN566B-EN-P - April 2001

Enclosure and Environmental Requirements Specific To This Product

This product must be mounted within a suitable system enclosure to

prevent personal injury resulting from accessibility to live parts. The

interior of this enclosure must be accessible only by the use of a tool.

This industrial control equipment is intended to operate in a Pollution

Degree 2 environment, in overvoltage category II applications, (as

defined in IEC publication 664A) at altitudes up to 2000 meters

without derating.

Preventing Electrostatic Discharge

The DeviceNet scanner module is sensitive to electrostatic discharge.

ATTENTION

This module is sensitive to electrostatic discharge.

Electrostatic discharge can damage integrated

circuits or semiconductors if you touch backplane

connector pins. Follow these guidelines when you

handle the module:

•Touch a grounded object to discharge static

potential.

•Wear an approved wrist-strap grounding

device.

•Do not touch the backplane connector or

connector pins.

•Do not touch circuit components inside the

module.

•If available, use a static-safe work station.

•When not in use, keep the module in its

static-shield bag.

ControlLogix DeviceNet Scanner Module 5

Publication 1756-IN566B-EN-P - April 2001

Understand the Module’s Software Features

The 1756-DNB module has the software features described in the

following sections. You activate these features by using RSNetWorx

for DeviceNet™ software (catalog no. 9357-DNETL3). For more

information, refer to the appropriate RSNetWorx for DeviceNet

documentation, and to the 1756-DNB Scanner User Manual,

publication 1756-UM515C-EN-P.

Slave Mode

The slave mode feature allows processor-to-processor

communication. It does this by allowing the scanner to perform as a

slave device to another master on the network.

Like other slaves, the scanner module exchanges data with only one

master when it is in slave mode. You control what information is

exchanged through the scan list configuration and associated

mapping functions of RSNetWorx for DeviceNet software.

The 1756-DNB can function in the following modes:

Change of State

The scanner module can send and receive data on a change of state

basis with slave devices that also have this feature. Data is sent:

•whenever a data change occurs, or

•at a user-configurable heartbeat rate

Scanner is in this mode when it

Null contains an empty or disabled scan list (out-of-box default).

Master serves as a master to one or more slaves but is not

simultaneously serving as a slave to another master.

Slave serves as a slave to another master.

Dual serves as both a master to one or more slaves and as a slave to

another master simultaneously.

Allen-Bradley

6ControlLogix DeviceNet Scanner Module

Publication 1756-IN566B-EN-P - April 2001

Change of state increases system performance by reducing network

traffic, since data is only sent on an as-needed basis. Use RSNetWorx

for DeviceNet software to activate this feature.

Cyclic I/O

The scanner module can send and receive data on a cyclic basis with

slave devices that also have this feature.

Cyclic I/O increases system performance by reducing network traffic,

since data is only sent at a user-configurable rate. Use RSNetWorx for

DeviceNet software to activate this feature.

Identify Module Components

Use the following figure to identify the external components of the

module.

DeviceNet

MOD/NET I/O OK

Backplane

Connector

Product

Label

Front View

Side View

Front

Panel

Wiring

DeviceNet

Connector

Health and

Status Indicators

Label

Color

Codes

Door

ControlLogix DeviceNet Scanner Module 7

Publication 1756-IN566B-EN-P - April 2001

Prepare to Install the Module

Before you install the module, make sure that you have these

components.

1756-DNB module 1756-A4, 1756-A7, or 1756-A10 chassis 1756-PA72/75 or 1756-PB72/75

power supply

DeviceNet open-style or

10-position connector

DeviceNet truck

small screwdriver

or drop cable

Allen-Bradley

8ControlLogix DeviceNet Scanner Module

Publication 1756-IN566B-EN-P - April 2001

Installing or Removing the Module Under Power

This module is designed to be installed or removed while chassis

power is applied.

Prepare the Chassis for Module Installation

Before you install the module, you must install and connect a

ControlLogix chassis and power supply. A 4-slot chassis with a power

supply is shown below.

WARNING

When you insert or remove a module while

backplane power is on, an electrical arc may

occur. An electrical arc can cause personal injury

or property damage by:

•sending an erroneous signal to your system’s

field device causing unintended machine

motion or loss of process control

•causing an explosion in a hazardous

environment

Repeated electrical arcing causes excessive wear

to contacts on both the module and its mating

connector. Worn contacts may create electrical

resistance that can affect module operation.

1756-A4

Chassis

Power

Supply

ControlLogix DeviceNet Scanner Module 9

Publication 1756-IN566B-EN-P - April 2001

For information on installing these products, refer to the publications

listed in the following table.

Determine Module Slot Location

This figure shows chassis slot numbering in a 4-slot chassis. Slot 0 is

the first slot and is always located to the right of the power supply.

You can use any size ControlLogix chassis and install the module in

any slot. You can also install multiple 1756-DNB modules in the same

chassis. You can install as many modules as your power supply can

accommodate (i.e., number for which the power supply is rated).

Chassis

Type

Chassis

Installation

Power

Supply

Power Supply

Installation

Series B: 1756-A4, -A7, -A10, -A13 Pub. No.

1756-IN080

1756-PA72/B Pub. No.

1756-5.67

1756-PB72/B

1756-PA75/A Pub. No.

1756-5.78

1756-PB75/A

Power Supply

Slot 0

Slot 1

Slot 2

Slot 3

Chassis

Allen-Bradley

10 ControlLogix DeviceNet Scanner Module

Publication 1756-IN566B-EN-P - April 2001

Install the Module

POWER

Align the circuit board with top

and bottom guides in the chassis.

Circuit board

Slide the module into the chassis.

Make sure the module properly connects

to the chassis backplane.

The module is fully installed

when it is flush with the power

supply or other installed modules.

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