Rockwell Automation 1756-DNB Installation Instructions

Installation Instructions

ControlLogix DeviceNet Scanner Module

Catalog Numbers 1756-DNB, Series C and D

Topic Page

Important User Information 2
Preventing Electrostatic Discharge 3
European Hazardous Location Approval - European Zone 2 Certification 4
Environment and Enclosure 5
North American Hazardous Location Approval 6
About this Publication 6
About the Module 7
Before You Begin 7
Determine Module Slot Location 8
Change Module Settings 9
Install the Module in the Chassis 16
Configure the Scan List 27
Monitor and Troubleshoot Devices in the Module Scan List 27
Interpret the Status Indicators 35
Understand ControlLogix Controller Interface Structures 38
Specifications 43
Additional Resources 47

2 ControlLogix DeviceNet Scanner Module

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical
equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls

Publication SGI-1.1
http://literature.rockwellautomation.com

equipment and hard-wired electromechanical devices. Because of this difference, and also because of
the wide variety of uses for solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the
many variables and requirements associated with any particular installation, Rockwell Automation, Inc.
cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.

Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

WARNING

available from your local Rockwell Automation sales office or online at

Identifies information about practices or circumstances that can cause an explosion in
a hazardous environment, which may lead to personal injury or death, property
damage, or economic loss.

) describes some important differences between solid state

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

Publication

Identifies information that is critical for successful application and understanding of
the product.

Identifies information about practices or circumstances that can lead to personal
injury or death, property damage, or economic loss. Attentions help you identify a
hazard, avoid a hazard and recognize the consequences.

Labels may be on or inside the equipment (for example,a drive or motor) to alert
people that dangerous voltage may be present.

Labels may be on or inside the equipment (for example, a drive or motor) to alert
people that surfaces may reach dangerous temperatures.

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ControlLogix DeviceNet Scanner Module 3

Preventing Electrostatic Discharge

ATTENTION

This equipment is sensitive to electrostatic discharge, which can cause
internal damage and affect normal operation. Follow these guidelines when
you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• Use a static-safe workstation, if available.

• Store the equipment in appropriate static-safe packaging when not in use.

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4 ControlLogix DeviceNet Scanner Module

European Hazardous Location Approval - European Zone 2 Certification

The following applies when the product bears the EEx Marking).

This equipment is intended for use in potentially explosive atmospheres as
defined by European Union Directive 94/9/EC.

The LCIE (Laboratoire Central des Industries Electriques) certifies that this
equipment has been found to comply with the Essential Health and Safety
Requirements relating to the design and construction of Category 3
equipment intended for use in potentially explosive atmospheres, given in
Annex II to this Directive.

Compliance with the Essential Health and Safety Requirements has been
assured by compliance with EN 60079-15.

IMPORTANT

Publication

• This equipment is not resistant to sunlight or other sources of UV
radiation.

• This equipment must be installed in an enclosure providing at least IP54
protection when applied in Class I, Zone 2 environments.

• This equipment shall be used within its specified ratings defined by
Rockwell Automation.

• Provision shall be made to prevent the rated voltage from being exceeded
by transient disturbances of more than 40% when applied in Class I, Zone
2 environments.

• This equipment must be used only with ATEX certified backplanes.

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Environment and Enclosure

ControlLogix DeviceNet Scanner Module 5

ATTENTION

This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
publication 60664-1), at altitudes up to 2000 m (6562 ft) without derating.

This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR Publication 11. Without appropriate precautions, there may be
potential difficulties ensuring electromagnetic compatibility in other
environments due to conducted as well as radiated disturbance.

This equipment is supplied as open-type equipment. It must be mounted within
an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The enclosure must have
suitable flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
non-metallic. The interior of the enclosure must be accessible only by the use
of a tool. Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.

Besides this publication, see:

• Industrial Automation Wiring and Grounding Guidelines, for additional
installation requirements, Allen-Bradley publication 1770-4.1

• NEMA Standards publication 250 and IEC publication 60529, as
applicable, for explanations of the degrees of protection provided by
different types of enclosure.

.

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6 ControlLogix DeviceNet Scanner Module

North American Hazardous Location Approval

The following information applies when
operating this equipment in hazardous
locations.

Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for
use in Class I Division 2 Groups A, B, C, D, Hazardous
Locations and nonhazardous locations only. Each product is
supplied with markings on the rating na meplate indicating
the hazardous location temperature code. When
combining products within a system, the most adverse
temperature code (lowest "T" number) m ay be used to help
determine the overall temperature code of the system.
Combinations of equipment in your system are subject to
investigation by the local Authorit y Having Jurisdiction at
the time of installation.

WARNING

EXPLOSION HAZARD -

• Do not disconnect eq uipment unless
power has been removed or the
area is known to be nonhazardous.

• Do not disconnect connections to
this equipment unless power has
been removed or the area is known
to be nonhazardous. Secure any
external connections that mate to
this equipment by using screws,
sliding latches, threaded
connectors, or other means
provided with this product.

• Substitution of components may
impair suitability for Class I,
Division 2.

• If this product contains batteries,
they must only be changed in an
area known to be nonhazardous.

Informations sur l’utilisation de cet
équipement en environnements dangereux.

Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne
conviennent qu'à une utilisation en environnements de
Classe I Division 2 Groupes A, B, C, D dangereux et non
dangereux. Chaque produit est livré avec des marqua ges sur
sa plaque d'identification qui indiquent le code de
température pour les environnement s dangereux. Lorsque
plusieurs produits sont combinés dans un système, le code de
température le plus défavorable (co de de température le plus
faible) peut être utilisé pour déterminer le code de
température global du système. Les comb inaisons
d'équipements dans le système sont sujettes à inspection pa r
les autorités locales qualifiées au moment de l'installation.

AVERTISSEMENT

RISQUE D’EXPLOSION –

• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher l'équipement.

• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher les connecteurs. Fixer
tous les connecteurs externes
reliés à cet équipement à l'aide
de vis, loquets coulissants,
connecteurs filetés ou autres
moyens fournis avec ce produit.

• La substitution de composants
peut rendre cet équipement
inadapté à une utilisation en
environnement de Classe I,
Division 2.

• S'assurer que l'environnement est
classé non dangereux avant de
changer les piles.

About this Publication

Use this publication as a guide to install the module. This publication
describes hardware installation only. For configuration information, refer to
the DeviceNet Modules in Logix5000 Systems User Manual, publication

DNET-UM004

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ControlLogix DeviceNet Scanner Module 7

About the Module

Use this figure to identify the external features of the module.

Top View

Front
Panel

USB Port

DeviceNet
Port

Front View

Side View

Backplane
Connector

31713-M

Before You Begin

Before you install the module, you must install and connect a ControlLogix
chassis and power supply.

Power
Supply

20805-M

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1756-A4
Chassis

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8 ControlLogix DeviceNet Scanner Module

To install these products, refer to these publications.

Publication References

Chassis Type Chassis

Installation
Instructions

Series B:
1756-A4, 1756-A7,
1756-A10, 1756-A13

Pub. No.

1756-IN080

Power Supply Power Supply

Installation
Instructions

1756-PA72/B Pub. No.
1756-PB72/B
1756-PA75/A Pub. No.
1756-PB75/A

1756-IN078

1756-IN596

Determine Module Slot Location

Install the module in any slot in the ControlLogix chassis. You can install
multiple 1756-DNB scanner modules in the same chassis.

The following figure shows chassis slot numbering in a 4-slot chassis. Slot 0 is
the first slot and is always the leftmost slot in the chassis.

Slot 0

Power Supply

Slot 1

Slot 2

Slot 3

Chassis

20806

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ControlLogix DeviceNet Scanner Module 9

Change Module Settings

The module ships with these settings.

Factory Setting Values

Factory Settings Value

Rotary switches 999
Communication (data) rate Software settable (default 125 Kbps)
Node address Software settable (default 63)

Front of Module

Communication (Data)
Rate Rotary Switch

Top of Module

DeviceNet Node Address Rotary
Switches

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10 ControlLogix DeviceNet Scanner Module

Set the Communication Rate

The 1756-DNB scanner module supports the following DeviceNet network
communication rates:

• 125 Kbps

• 250 Kbps

• 500 Kbps

The factory default setting is 125 Kbps.

ATTENTION

Do not change the communication rate on an active network. Unpredictable
operation may result. In addition, the new communication rate does not take
effect until you cycle power to the 1756-DNB scanner module.

Change the communication rate by setting the rotary switch or
commissioning the 1756-DNB scanner module in RSNetWorx for DeviceNet
software.

Use the switch to select a specific communication rate. When the switch is set
to 3...9 (except for 888), you can configure the communication rate with
RSNetWorx for DeviceNet software. When all three switches are set to 8, the
1756-DNB scanner module will reset to factory default settings at powerup.

See Restore the Factory Default Settings on page 15

See the following table for switch settings.

for more information.

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ControlLogix DeviceNet Scanner Module 11

Communication Rate Rotary Switch

Front of Module

Top of Module

Communication (Data) Rate Rotary Switch

Switch Settings and Communication Rate

Switch Setting Communication Rate

0 125 Kbps
1 250 Kbps
2 500 Kbps
8 When all three switches are set to 8, this resets the

1756-DNB scanner module to factory default settings.
Do not use for normal operation.

All other values Select the communication rate with RSNetWorx for

DeviceNet software.

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12 ControlLogix DeviceNet Scanner Module

Set the Rotary Switch

Use the communication (data) rate rotary switch to change the

communication rate.

TIP

For ease of access, remove the module from the chassis before proceeding.

1. If the module is removed from the chassis, be sure that power is
removed or the area is nonhazardous before proceeding.

2. Move the rotary switch to the desired position.

3. If necessary, reinstall the module into the chassis.

Use RSNetWorx for DeviceNet Software

Follow this procedure to use RSNetWorx for DeviceNet software to set the
communication rate.

For more information, refer to the DeviceNet Modules in Logix5000 Control
Systems User Manual, publication DNET-UM004

1. In RSNetWorx for DeviceNet software, select the 1756-DNB scanner
module.

2. Select Tools and Node Commissioning.

3. Browse to the DeviceNet network for the 1756-DNB scanner module

you want to commission.

4. Select the 1756-DNB scanner module you want to commission.

.

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ControlLogix DeviceNet Scanner Module 13

5. In the Data Rate field, select the communication (data) rate.

6. Click Apply.

7. Cycle power to the 1756-DNB scanner module.

Set the Node Address

The 1756-DNB scanner module supports DeviceNet node addresses 00...63.
The factory default setting is node address 63.

Change the node address by setting the rotary switches or commissioning the
1756-DNB scanner module in RSNetWorx for DeviceNet software.

Use the switches to select any network address from 00 through 63. When
the switches are set outside of this range (except for 888), you can configure
the node address with RSNetWorx for DeviceNet software. When all three
switches are set to 8, the 1756-DNB scanner module will reset to factory
default settings at powerup. See Restore the Factory Default Settings on

for more information. See the following table for switch settings.

page 15

Switch Settings

Front of Module

Most Significant Digit Switch

DeviceNet Node Address Rotary Switches

Top of Module

Least Significant Digit Switch

Switch Settings

Switch Setting Node Address

0...63 DeviceNet node address 00...63
88 When all three switches are set to 8, resets the 1756-DNB scanner

module to factory default settings. Do not use for normal operation.

All other values Select the node address with RSNetWorx for DeviceNet software.

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14 ControlLogix DeviceNet Scanner Module

Set the Rotary Switches

Use the node address rotary switches to change the DeviceNet node address
for the 1756-DNB scanner module.

TIP

For ease of access, remove the module from the chassis before proceeding.

1. If the module is removed from the chassis, be sure that power is
removed or the area is nonhazardous before proceeding.

2. Move the rotary switches to the desired position.

3. If necessary, reinstall the module into the chassis.

Use RSNetWorx for DeviceNet Software

Follow this procedure to use RSNetWorx for DeviceNet software to set the
node address.

For more information, refer to DeviceNet Modules in Logix5000 Control
Systems, publication DNET-UM004

1. In RSNetWorx for DeviceNet software, select the 1756-DNB scanner
module.

2. Click Tools>Node Commissioning.

3. Browse to the DeviceNet network for the 1756-DNB scanner module

you want to commission.

4. Select the 1756-DNB scanner module you want to commission.

.

5. In the Address field, select the node address.

6. Click Apply.

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ControlLogix DeviceNet Scanner Module 15

Restore the Factory Default Settings

The out-of-box reset will clear the scanlist (including ADR configuration
recovery files) and return all software setting attributes to their default values.

Follow this procedure to restore the factory default communication rate and
node address.

1. Set the switches to 888.

IMPORTANT

Do not use the 888 switch setting during normal module operation.

2. Restore power to the module.

When the out-of-box reset is complete, the alphanumeric display
repeatedly scrolls the message Reset Complete - Change Switch
Settings. During this time, the module does not respond to
communication from any port (including the backplane, DeviceNet
connector, or USB port).

3. After the module resets, perform the following steps.

a. Set the switches to the desired position.

b. Restore power to the module.

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