Allen-Bradley DeviceNet 1771-SDN/C User manual

1Publication1771-IN014B-EN-P- September 2001

Installation Instructions

DeviceNet Scanner Module

Catalog Number 1771-SDN/C

Contents

Use this document as a guide to install your 1771-SDN/C Scanner

Module.

Before you install your module you must know how to:

•program and operate an Allen-Bradley PLC processor

•install and configure devices on your DeviceNet network

To: See page:

understand important user information below

prevent Electrostatic Discharge 3

identify related publications 3

understand module compatibility and maintenance 4

understand module enhancements and features 4

identify external scanner module features 6

understand software and hardware requirements 8

set data rate switches for channels 1 and 2 10

set I/O chassis addressing mode switches 11

set node address switches for channels 1 and 2 11

install your module into the chassis 13

connect tothe DeviceNet network 14

understand how your module communicates with the PLC®processor 16

program your PLC-5 processor 16

configure your module for the DeviceNet™ network 25

use the Explicit Message Program Control feature 26

troubleshoot your module 35

For this reference information: See page:

Specifications 39

AB PLCs

Publication 1771-IN014B-EN-P - September 2001

2DeviceNet Scanner Module Catalog Number 1771-SDN/C

Important User Information

Because of the variety of uses for the products described in

this publication, those responsible for the application and use

of these products 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.

In no event will Allen-Bradley be responsible or liable for

indirect or consequential damage resulting from the use or

application of these products.

Any illustrations, charts, sample programs, and layout

examples shown in this publication 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 part, without written permission of Rockwell

Automation, is prohibited.

Throughout this publication, notes may be used to make you

aware of safety considerations. The following annotations and

their accompanying statements help you to identify a potential

hazard, avoid a potential hazard, and recognize the

consequences of a potential hazard:

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.

Environment and Enclosure

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 meters 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 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.

See NEMA Standards publication 250 and

IEC publication 60529, as applicable, for

explanations of the degrees of protection

provided by different types of enclosure.

Also, see the appropriate sections in this

publication, as well as the Allen-Bradley

publication 1770-4.1 ("Industrial Automation

Wiring and Grounding Guidelines"), for

additional installation requirements

pertaining to this equipment.

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.

WARNING

Publication1771-IN014B-EN-P- September 2001

DeviceNet Scanner Module Catalog Number 1771-SDN/C 3

Prevent Electrostatic

Discharge

Where to Find More

Information

The following table describes related documentation. To order a copy

or to view or download an online version, visit The Automation

Bookstore at:

www.theautomationbookstore.com

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 wrist strap

•do not touch connectors or pins on component

boards

•do not touch circuit components inside the

equipment

•if available, use a static-safe workstation

•when not in use, store the equipment in

appropriate static-safe packaging

For information about: See this document: Publication number:

Configuring the scanner

moduleand associated

hardware in an example

application

1771-SDN DeviceNet Scanner

Module User Manual 1771-6.5.132

Performing theControlFlash

Update ControlFlash Firmware Upgrade

Kit User Manual 1756-6.5.6

RSLogix 5™ software Getting Results with RSLogix 5 9399-RL53GR

RSLinx™ software Getting Results withRSLinx 9399-WAB32GR

RSNetWorx for DeviceNet™

software RSNetWorx for DeviceNet Demo

CD 9398-DNETDEMO

Connecting the DeviceNet

network DeviceNet Cable Planning and

Installation Manual DN-6.7.2

AB PLCs

Publication 1771-IN014B-EN-P - September 2001

4DeviceNet Scanner Module Catalog Number 1771-SDN/C

Module Compatibility and

Maintenance Requirements

The 1771-SDN/C DeviceNet Scanner Module is fully compatible with

the Series A and Series B versions. You can use the Series C version as

a spare or replacement module with one requirement: you must

change the postion of Switch 5 to the off or “0” position in the

Configuration switchbank as shown below:

The scanner revision is identified by RSNetWorx. In Series B mode,

the scanner is identified as Series B with major number as 4 and minor

number as 50. In Series C mode, the scanner is identified as Series C

with major number as 6 and minor number as 2 or higher.

To use the Series C module enhancements listed below, the scanner

module Configuration Switch 5 must be set in the on or “1” position.

Module Enhancements

Updated DeviceNet Master Library

Electronic Keying - added to include Major and Minor revision

checking.

Shared Inputs - multiple scanner modules can acquire the inputs

from a specific input device without using separate connections.

Auto Device Replacement (ADR) - consists of Node Recovery and

Configuration Recovery:

•Node Recovery - this feature causes the node number of the

replacement device to be automatically changed to the node

number of the original device. The replacement device’s node

number must be writable over the DeviceNet network and must

initially be set to 63.

•Configuration Recovery - this feature causes the replacement

device’s configuration to be made identical to the original device.

The replacement device’s configuration must be writable over the

DeviceNet network. Configuration Recovery files are stored in the

master scanner that is communicating with the original device

through RSNetWorx for DeviceNet.

Configuration

Chassis Address

Series C label

NOTE: Default scanner setting is Series C operation.

When replacing an older scanner, set

configuration Switch 5 to the OFF position.

See Installation Instructions for details.

Publication1771-IN014B-EN-P- September 2001

DeviceNet Scanner Module Catalog Number 1771-SDN/C 5

Other Features

Change of State

Change of state enables the scanner module to perform a scan:

•whenever a network data change occurs, or

•at a user-configurable heartbeat rate

Because data is only sent on an as-needed basis, this feature increases

system performance by reducing network traffic.

Cyclic I/O

Cyclic I/O allows you to instruct the scanner module to perform a

scan at a specific send rate.

Because data is only sent at a periodic rate, this feature increases

system performance by reducing network traffic.

Pass-Through

The 1771-SDN “pass-through” feature allows communication with the

DeviceNet network from another network. This feature can be used to

adjust and fine tune the nodes on your network.

For more information on how to use the pass-through feature, refer to

Chapter 5 of the PLC-5 DeviceNet Scanner Module User Manual,

publication 1771-6.5.132.

AB PLCs

Publication 1771-IN014B-EN-P - September 2001

6DeviceNet Scanner Module Catalog Number 1771-SDN/C

External Module

Features

Use the drawing below to identify the features of the 1771-SDN/C and

B versions of the Scanner Module.

DeviceNet Port 1 - use the color-coded

header to wire your module.

20274 20275

Module Status Indicator - indicates

whether the device has power and

is functioning properly

Channel 1 Status Indicator - gives

diagnostic indications for Channel 1.

Reset Button - resets your module.

Node Address and Status Display -

displays numeric codes that indicate

scanner node address, status and/or

errors for Channel 1.

Channel 2 Status Indicator - gives

diagnostic indications for Channel 2.

Multi-position Switches-

use to set the data rate, chassis addressing mode

and scanner node address for each channel.

Front of Module Left Side of Module

DeviceNet Port 2 - use the

color-coded header to wire your

module.

Data Rate

Switch Settings Chassis Address

Switch Settings

Channel 1 & 2

Node Address Switch Settings

Node Address and Status Display -

displays numeric codes that indicate

scanner node address, status and/or

errors for Channel 2.

MODULE

STATUS

RESET

CHANNEL 1

NETWORK

STATUS

NODE/

ERROR CODE

DeviceNet

CHANNEL 2

NETWORK

STATUS

NODE/

ERROR CODE

DeviceNet

1771-SDN

CHANNEL 1 CHANNEL 2 CONFIGURATION

Allen-Bradley

Publication1771-IN014B-EN-P- September 2001

DeviceNet Scanner Module Catalog Number 1771-SDN/C 7

Series A Channel, Port and Switch Identification

The Series A version of this module (1771-SDN) uses different

channel, port and switch identification as shown in the following

figure:

Channel B

Channel A

DeviceNet Port A - use the

color-coded header

to wire your module.

20274 20275

Channel A Status Indicator -

gives diagnostic indications for

Channel A.

Channel B Status Indicator -

gives diagnostic indications for

Channel B.

Multi-position Switches-

use to set the data rate, chassis addressing mode

and scanner node address for each channel.

Front of Module Left Side of Module

DeviceNet Port B - use the

color-coded header to wire your

module.

Data Rate

Settings AddressChassis

Settings

Channel A & B

Node Address Settings

CHANNEL A CHANNEL B CONFIGURATION

AB PLCs

Publication 1771-IN014B-EN-P - September 2001

8DeviceNet Scanner Module Catalog Number 1771-SDN/C

Software and Hardware

Requirements

Software Requirements

Before you intall the scanner module, make sure you have the

following software:

•personal computer with Microsoft Windows™ 95 or later

operating system

•RSNetWorx for DeviceNet software, version 2.22 or later

•RSLogix 5 software

Electronic Data Sheet Requirement

To use the new features of this release, the scanner module requires

the latest EDS file for RSNetWorx for DeviceNet software. If the

software displays the device as an “unknown device”, you must

download the current EDS file.

You can get the latest EDS file online at:

http://www.ab.com/networks/eds

Once you are at this location:

1. Select DeviceNet

2. Enter the catalog number: 1771-SDN

3. Select Search

Hardware Requirements

The 1771-SDN Scanner Module is compatible only with the 1771-A1B

through 1771-A4B or later I/O chassis in any configuration supported

by the 1771 family.

You can use the following chassis with the 1771-SDN Scanner Module:

•Local I/O Chassis with only the PLC processor running in the

leftmost slot

•Extended Local I/O Chassis with any 1771-ALX Adapter Module

running in the leftmost slot

•Remote I/O Chassis with a 1771-ASB Adapter Module running in

the leftmost slot or a PLC processor running in the leftmost slot

Publication1771-IN014B-EN-P- September 2001

DeviceNet Scanner Module Catalog Number 1771-SDN/C 9

•Remote I/O Chassis linked to ControlNet with a 1771-ACN(R)

running in the leftmost slot

Do not use the 1771-SDN Scanner Module with the following:

•Chassis configured for complementary I/O

•Remote I/O chassis connected to a preceding chassis using a

1771-SN Sub I/O Scanner Module

The 1771-SDN Scanner Module is compatible with any PLC-2, PLC-3

or PLC-5processor that supports block transfer read and write

instructions. The example configurations in these installation

instructions use a PLC-5 processor.

Perform the ControlFLASH Update

If you have the previous release of firmware and you want to upgrade

it to this release, you must perform the ControlFLASH update. To get

the kit, contact Rockwell Automation Technical Support at

440.646.5800. To install the kit, refer to the ControlFLASH Firmware

Upgrade Kit User Manual, publication 1756-6.5.6.

Before you install your module you must set the following switches:

•data rate for each DeviceNet channel

•I/O chassis addressing mode (1/2, 1 or 2-slot addressing)

•scanner node address for each channel

IMPORTANT The 1771-SDN Scanner Module fits in any slot of the

chassis except for the leftmost slot, which is reserved

for the PLC processor. The scanner module will not

conflict with other 1771 I/O devices in the chassis.

You can install multiple scanners in the same chassis.

AB PLCs

Publication 1771-IN014B-EN-P - September 2001

10 DeviceNet Scanner Module Catalog Number 1771-SDN/C

Set the Data Rate Switches

for Channels 1 and 2

To set the DeviceNet data rate switches for Channels 1 and 2:

1. Locate the switchbank labeled “Channel 1” on the left side of the

module.

2. Use the table below to determine the data rate you want to set

for “Channel 1.” Record your choice in the fourth column.

3. Using a ball point pen or similar object, adjust switches 2 and 1

to your desired data rate setting. (NOTE: Do not use a pencil

to adjust switches. The lead may break off in the

switchbank.) Slide the switches up to denote an on or “1”

position. Slide the switches down to denote an off or “0”

position.

For example, if you want to set DeviceNet data rate of 500K baud for

Channel 1, then you set switch 2 to an off or “0” position and switch 1

to an on or “1” position.

4. Repeat steps 1-3 to set the DeviceNet data rate for Channel 2,

using the switchbank labeled “Channel 2’. Adjust the switches to

your desired data rate setting.

Set the I/O Chassis

Addressing Mode Switches

To set the I/O chassis addressing mode switches:

1. Locate the switchbank labeled “Configuration” on the left side of

the module.

2. Use the following table to determine the chassis addressing

mode you want to set. Record your choice in the fourth column.

Channel 1 and 2

Data Rate Switch Position Note Your

Data Rate

1 2

125K baud 0 0

250K baud 0 1

500K baud 1 0

Not allowed 1 1

Data Rate Sw.1 Sw.2

500K 1 0

Data Rate

20276

Channel 1

Configuration

20277

Chassis Address

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