Rockwell Automation 1734-ADNX User Manual

POINT I/O DeviceNet Adapter

1734-ADN, 1734-ADNX

User Manual

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 Rockwell Automation 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, Rockwell Automation 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 Rockwell Automation 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:

WARNING

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.

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.

Allen-Bradley, RSNetWorx for DeviceNet, PointBus, and POINT I/O are trademarks of Rockwell Automation. DeviceNet is a trademark of Open DeviceNet Vendor Association.

Summary of Changes

Using Change Bars

New and Revised Information

This document contains updated information. Changes are identified by change bars in the margin, as shown to the left.

The table below lists the new and revised information included in this release of the POINT I/O DeviceNet Adapter user manual.

Table Summary of Changes.A

Information about New or revised: Location:

Guidelines for Using Your Adapter

Using Auto Start Mode New Chapter 2

Using the Cycling I/O Mapping Feature

Removing and Reinserting Modules on the DeviceNet Network

1734-ADNX Quick Start New Appendix B 1734-ADNX Rules and

Guidelines on How to Use the 1734-ADNX

New Preface

Chapter 6

Chapter 3 Appendix B

New Chapter 2

Chapter 3

New Chapter 2

New Appendix C

Use Default Data Maps New Appendix D

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Summary of Changes 2

Notes:

Publication 1734-UM002C-EN-P - July 2003

Preface

Purpose of this Manual

This manual describes how to install, configure and operate your POINT I/O DeviceNet™ Adapter, catalog number 1734-ADN.

For more information about: See page:

Who Should Use This Manual Preface-1 What the Manual Contains Preface-2 Related Terms Preface-3 Related Products and Documentation Preface-5 Guidelines for Using Your Adapter Preface-5 Conventions Used in This Manual Preface-6

IMPORTANT

In this manual, we use 1734-ADN(X) to refer to both the 1734-ADN and 1734-ADNX modules. We use 1734-ADN to refer to only the 1734-ADN module. We use 1734-ADNX to refer to only the 1734-ADNX module.

In the rest of this manual (except Chapter 4), we refer to the 1734-ADN(X) POINT I/O DeviceNet adapter as the adapter.

Who Should Use This Manual

In Chapter 4, we refer to the POINT I/O DeviceNet adapter as the scanner because the chapter describes how to configure the adapter for use with POINT I/O modules.

You must be able to use RSNetWorx™ for DeviceNet software or similar configuration software to configure your adapter.

In this manual, we assume you know how to configure an adapter. If you do not, refer to your software user manuals or online help before attempting to use this adapter.

We also assume you are familiar with the POINT I/O product line, including other fieldbus interfaces, I/O modules and power supplies. If you are not familiar with these components, you can read some of the POINT I/O documents listed on page

Preface-5.

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Preface 2

What the Manual Contains

Chapter 1 - Installing the 1734-ADN(X) Adapter

Description of how to install and wire the adapter

Chapter 3 - Using Auto Start Mode

Description of how to use the Auto Start Mode on your adapter to quickly get your system up and running

This manual contains the following sections:

Chapter 2 - What is the 1734-ADN(X) Adapter?

Overview of the adapter’s features and functionality

Module Status

DeviceNet

Status

DeviceBus Status

1734-ADN

1734-EP24DC

System Power

Field Power

Chapter 4 - Configuring the 1734-ADN(X) Adapter’s SubNet

Description of how to configure your adapter

Chapter 5 - Adding the 1734-ADN(X) to the DeviceNet Scanner’s Scanlist

Description of how to configure the DeviceNet adapter and to add it to the scanlist.

Appendix B - Quick Start

Learning how to use the 1734-ADNX with a ControlLogix system on DeviceNet

Chapter 6 - Troubleshooting the 1734-ADN(X) Adapter

Description of how to use the status indicators and to troubleshoot your adapter

Appendix C - 1734-ADNX Rules and Guidelines

Regarding how to use the 1734-ADNX

Appendix A - Specifications

Listing of the 1734-ADN(X) specifications

Appendix D - Default Data Maps

Listing of the default data maps for 1734-POINT I/O modules

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Preface 3

Related Terms

This manual uses the following terms:

Ter m: Definition:

Adapter POINT I/O DeviceNet adapter (1734-ADN and 1734-ADNX). Auto Catalog Replace The POINT I/O DeviceNet adapter supports the swapping of

two identical modules connected to the adapter. I.e., if a 1734-IB4 is in slot 3 and another 1734-IB4 is in slot 7, the two modules can be removed from the POINT system and the slot 3 module placed into slot 7, and vice-versa. When ADR is active, the swapped modules will be reconfigured to match the previous module in their new slot. When ADR is not active, the configuration parameters will not be modified, the swapped modules must have identical configuration, and values for their EDS file parameters.

Auto Device Replace This refers to the ADR feature of a ControlLogix System on

DeviceNet. With ADR active, any device on the DeviceNet link may be removed and replaced with an out-of-the-box checkmark compliant DeviceNet device. The ADR feature will result in downloading the values of the configuration parameters of the EDS file, of the removed device, to the new device.

Auto Start Mode A feature that lets the POINT I/O system get “up and running”

without the prerequisite to configure any of the EDS parameters for the POINTBus Auto Start Mode will result in a scan list within the adapter which stores the modules identity information.

™ or POINT I/O modules. Using

Autobaud Feature in devices (e.g. POINT I/O modules) on the DeviceNet

network that causes them to listen to communications on the network and set their own baudrate to match the network rate.

Backplane The PointBus that consists of POINT I/O modules connected to

the 1734-ADN(X) adapter.

Baudrate Rate of communications between devices on the DeviceNet

network. Backplane baudrate is used for the 1734-ADN. Subnet baudrate is used for the 1734-ADNX.

Change of State (COS) DeviceNet communications method in which the adapter

sends data based on detection of any changed value within the input data. Data is independently received based on change of state from the sender. Data in both directions can be acknowledged or unacknowledged depending on the run time configuration of the system.

Commissioning The period in time associated with post startup activities.

Commissioning implies that the system has been validated and all configuration parameters are correct, all modules are in good operating condition, and the adapter scanlist is complete.

ControlFlash Utility software you can use to update the adapter’s firmware

with the most current Boot and Application code.

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Preface 4

Term: Definition:

Cyclic DeviceNet communications method in which the adapter

sends data cyclically based on a configured time value. Data is independently received cyclically from the sender. Data in both directions can be acknowledged or unacknowledged

depending on the run time configuration of the system. MAC ID Media Access Control Identifier (DeviceNet network address). Master A DeviceNet network device (e.g., 1771-SDN) that initiates

communication with DeviceNet slave devices (e.g., POINT I/O

modules) to retrieve data. The master only receives

unprompted data when the slave is enabled for COS and there

is a change in the device’s operating state. MAX BACKPLANE ID A unique attribute, Max(imum) Backplane MACID, has

been added to 1734-ADNX. This value represents the highest

node address of a module residing on the backplane. This

value must be greater than or equal to the rightmost

backplane POINT I/O module, but must be less than that of

any non-backplane Subnet module. Offline State of the adapter when it is not powered or maintaining

normal communications exchanges with other DeviceNet

devices. Online State of the adapter when it is powered and maintaining

normal communications exchanges with other DeviceNet

devices. PointBus The POINT I/O backplane. PointBus maintains all DeviceNet

network protocol but also offers configuration capabilities. Polled DeviceNet communications method in which a module sends

data in response to received data. Primary Network The Primary DeviceNet Network, and it is defined as the

DeviceNet link that provides the direct connection between

the POINT DeviceNet adapter and a DeviceNet scanner RSNetWorx for DeviceNet Configuration software for the adapter and Subnet modules. Scanlist The list of Subnet modules connected to the adapter. When

ADR is active, the scanlist stores the configured values of

each of the Subnet modules’ configurable parameters. When

ADR is not active, the scanlist stores only the module identity

information. Scanner Operating state of the 1734-ADN(X) when it retrieves I/O data

from Subnet modules. Slave A DeviceNet network device that cannot initiate

communication (except when configured with COS enabled)

but responds to a DeviceNet master device. Strobe Adapter sends data in response to the strobe command. The

single bit allocated to the adapter in the strobe message is not

used. If the configured size of the input data (sent from the

adapter) is greater than 8 bytes, the strobe connection

establishment will fail. In this case, the input size must be

reconfigure to 8 bytes or less.

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Term: Definition:

Subnet 1734-ADNX only.

The Subnet DeviceNet Network, and is defined as the

DeviceNet link that provides the expansion of the POINTBus to

allow the 1734-ADNX to use its lower connector to add an

additional 500 meters and up to 63 nodes which will be

bridged through the 1734-ADNX up to the Primary Network.

Note that backplane modules are also part of the Subnet.

Preface 5

Guidelines for Using Your Adapter

If you need more information on these products, contact your local Rockwell Automation/Allen-Bradley distributor, integrator or sales office for assistance. For more information on the documentation, refer to the Allen-Bradley Publication Index, publication SD499.

Remember the following operational guidelines when using your 1734-ADN(X) adapter.

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Preface 6

• Do not leave spaces in the I/O. Instead, install all POINT I/O

modules adjacent to each other.

IMPORTANT

• Populate every position on the DIN rail.

• Do not add new I/O modules to the end of the POINT I/O

system while the system is under power.

• Use both labels with the I/O modules and removable terminal

blocks (RTBs).

• Do not separate I/O modules and RTBs with the same number.

• Do not move I/O modules to different locations on the DIN rail

after they have been installed and configured. You should always place modules with the matching RTB.

• If adjacent modules (i.e., 2 or more) are removed, replace all of

them to operate the POINT I/O system. Input data will hold last state until all previously-removed modules are replaced.

If you must leave an I/O space open temporarily, you must change the keying position on the mounting base (1734-MB) to #5. This position will prevent you from installing the wrong I/O module on the base.

Conventions Used In This Manual

• Use Allen-Bradley terminal markers to identify your POINT I/O

modules. The cards are easily ordered from your Rockwell Automation representative under the Bulletin 1492 number.

For more information on the Allen-Bradley terminal marking kits, see the documents list on page

The following conventions are used throughout this manual:

• bullet lists (such as this one) provide information, not

procedural steps

• number lists provide sequential steps

• text written like this identify screen, menu, toolbar names, field

names, buttons, and check boxes on screens

• a menu item in this format File>Save identifies the submenu item

after the caret (>) accessed from the main menu (name before the caret)

• pictures of symbols and/or screens represent the actual symbols

you see or the screens you use

Preface-5.

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Installing the 1734-ADN(X) Adapter

What is the 1734-ADN(X) Adapter?

Chapter 1

Installing the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Installing a Replacement DeviceNet Adapter in an

Existing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Wiring the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

DeviceNet Connection Plug Wiring and Subnet. . . . . . . 1-6

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 1-6

Chapter 2

Using the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Set Subnet/Backplane Baudrate . . . . . . . . . . . . . . . . . . 2-3

Set Subnet I/O Module Addresses. . . . . . . . . . . . . . . . . 2-3

Configure the Subnet I/O. . . . . . . . . . . . . . . . . . . . . . . 2-4

Configure the Primary DeviceNet Network . . . . . . . . . . 2-4

Remove and Reinsert Modules on the Backplane . . . . . 2-5

Understanding the DeviceNet Network and Subnet . . . . . . 2-6

DeviceNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Subnet Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Adapter Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Communicating Through the Adapter . . . . . . . . . . . . . . . . 2-18

Mapping Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Overview of the Communication Process . . . . . . . . . . . 2-19

Image Table Mapping . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Communicating with I/O Modules . . . . . . . . . . . . . . . . . . . 2-22

Using Diagnostic Tables . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 2-24

Chapter 3

Using Auto Start Mode

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Why Use Auto Start Mode? . . . . . . . . . . . . . . . . . . . . . . . . 3-2

What Does Auto Start Mode Do?. . . . . . . . . . . . . . . . . . 3-2

When the Adapter Uses Auto Start Mode, How Does it

Map I/O Data? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Are There Any Requirements to Using Auto Start Mode? 3-4

Installing the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Wiring the Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

DeviceNet and Subnet Connector Plug Wiring. . . . . . . . 3-8

Installing the I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Adding Non-Backplane Modules to Subnet

(1734-ADNX Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Using RSNetWorx for DeviceNet . . . . . . . . . . . . . . . . . . . . 3-10

Beginning Auto Start Mode . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Using Custom Configuration . . . . . . . . . . . . . . . . . . . . . . . 3-13

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 3-14

Table of Contents ii

Configuring the 1734-ADN(X) Adapter’s SubNet

Adding the 1734-ADN(X) to the DeviceNet Scanner’s Scanlist

Troubleshooting the 1734-ADN(X) Adapter

Chapter 4

Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Adding the Scanner to Your Network . . . . . . . . . . . . . . 4-2

Adding I/O Modules to Your Network . . . . . . . . . . . . . 4-3

Setting the Scanner’s Parameters. . . . . . . . . . . . . . . . . . 4-3

Going Online. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 4-8

Chapter 5

Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Adding the Adapter to Your Network . . . . . . . . . . . . . . 5-2

Setting the Adapter’s Parameters. . . . . . . . . . . . . . . . . . 5-3

Going Online. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 5-6

Chapter 6

Use the Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Guidelines for Using Your Adapter . . . . . . . . . . . . . . . . . . 6-4

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 6-5

Specifications

1734-ADNX Quick Start

1734-ADNX Rules and Guidelines

Regarding How to Use the 1734-ADNX. Default Data Maps

Appendix A

Appendix B

What’s In This Appendix? . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Review of the 1734-ADNX Rules and the

MAC ID Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Review of Auto Start Mode. . . . . . . . . . . . . . . . . . . . . B-11

Browse the Subnet. . . . . . . . . . . . . . . . . . . . . . . . . . . B-15

Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . B-18

Navigate Between Networks. . . . . . . . . . . . . . . . . . . . B-23

Appendix C

Appendix D

1734-IA2 Input Module . . . . . . . . . . . . . . . . . . . . . . . . D-2

1734-IB2 Sink Input Module. . . . . . . . . . . . . . . . . . . . . D-2

1734-IB4 Sink Input Module. . . . . . . . . . . . . . . . . . . . . D-2

1734-IV2 Source Input Module . . . . . . . . . . . . . . . . . . . D-3

1734-IV4 Source Input Module . . . . . . . . . . . . . . . . . . . D-3

1734-OA2 Output Module . . . . . . . . . . . . . . . . . . . . . . D-3

1734-OB2E Electronically Protected Output Module . . . D-4

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Table of Contents iii

1734-OB2EP Protected Output Module . . . . . . . . . . . . . D-4

1734-OB4E Electronically Protected Output Module . . . D-4

1734-OV2E Protected Sink Output Module . . . . . . . . . . D-5

1734-OV4E Protected Sink Output Module . . . . . . . . . . D-5

1734-OW2 Relay Sink/Source Output Module . . . . . . . . D-6

1734-OX2 Relay Output Module . . . . . . . . . . . . . . . . . . D-6

1734-IE2C Analog Current Input Module. . . . . . . . . . . . D-6

1734-IE2V Analog Input Module. . . . . . . . . . . . . . . . . . D-7

1734-OE2C Analog Current Output Module. . . . . . . . . . D-8

1734-OE2V Analog Output Module. . . . . . . . . . . . . . . . D-8

1734-IJ Encoder/Counter Module . . . . . . . . . . . . . . . . . D-9

1734-IK Encoder/Counter Module. . . . . . . . . . . . . . . . . D-9

1734-IM2 Input Module . . . . . . . . . . . . . . . . . . . . . . . D-10

1734-IR2 RTD Input Module. . . . . . . . . . . . . . . . . . . . D-10

1734-IT2I Isolated Thermocouple Input Module . . . . . D-11

1734-VHSC 24V dc High Speed Counter Module . . . . . D-11

1734-VHSC 5V dc High Speed Counter Module. . . . . . D-12

1734-SSI Synchronous Serial Interface Absolute

Encoder Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-12

1734-232ASC ASCII Module . . . . . . . . . . . . . . . . . . . . D-13

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Table of Contents iv

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Chapter

Installing the 1734-ADN(X) Adapter

This chapter describes how to install and wire your adapter.

For more information about: See page:

Installing the Adapter 1-2

Installing a Replacement DeviceNet Adapter in an Existing System

Wiring the Adapter 1-5 Chapter Summary and What’s Next 1-6

When properly installed, POINT I/O is grounded through the DIN rail to chassis ground. We recommend using zinc plated, yellow chromated steel DIN rail to assure proper grounding.

Other DIN rail materials (e.g. aluminum, plastic, etc.) can corrode or oxidize and are poor conductors that may result in improper or intermittent platform grounding.

If you choose not to use zinc plated, yellow chromated steel DIN rail for your POINT I/O, we recommend occasional cleaning of the DIN rail to prevent or lessen the effects of oxidation and corrosion.

1-4

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1-2 Installing the 1734-ADN(X) Adapter

Installing the Adapter

1734-ADN(X) communication interface

Orange screw slot

To install the adapter on the DIN rail prior to installing other base units, proceed as follows.

1. Position the adapter vertically in front of the DIN rail.

2. Press firmly to install the adapter on the DIN rail. The locking

mechanism locks the adapter to the DIN rail.

DIN rail

31110-MC

3. Insert the DeviceNet network plug and tighten the holding screws.

DeviceNet network plug

Holding screw

31111-MC

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Installing the 1734-ADN(X) Adapter 1-3

4. Set the node address using the 2-position thumbwheel switch. Valid physical settings range from 00 to 63. Press either the + or

- buttons to change the number.

You can also set the node address to some value between 64-99. In this case, you can change the adapter’s node address via the RSNetWorx for DeviceNet software. If a value between 64-99 is used, at power-up the node address stored in the adapter’s non-volatile memory is used.

Network Node Address Thumbwheel

Adapter Status

DeviceNet Status

PointBus Status

1734-ADN

System Power

Field Power

42510

5. Slide the safety end cap up to remove it. This exposes the backplane and power interconnections.

Safety end cap

ATTENTION

31112-MC

Do not discard the safety end cap. Use this end cap to cover the exposed interconnections on the last mounting base on the DIN rail. Failure to do so could result in equipment damage or injury from electric shock.

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1-4 Installing the 1734-ADN(X) Adapter

Installing a Replacement DeviceNet Adapter in an Existing System

Your existing control application may be using another DeviceNet adapter (e.g., 1734-PDN) that you want to replace with a 1734-ADN(X) DeviceNet adapter. Remove the existing adapter from the DIN rail as follows:

1. Eliminate power to the adapter and all I/O modules in your

2. Remove the wiring assembly and DeviceNet cable from your

3. Remove the adjacent I/O module.

existing system.

existing adapter.

For information on how to remove POINT I/O modules from the DIN rail, see the associated publications for those modules.

RTB removal handle

42511

4. Use a small bladed screwdriver to rotate the DIN rail locking screw to a vertical position and release the locking mechanism.

42417

5. Pull the adapter off of the DIN rail to remove it from the existing system.

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Installing the 1734-ADN(X) Adapter 1-5

6. Insert the new adapter into slot 0 using the steps described on

1-2.

page

7. Reattach I/O modules to the new adapter.

Wiring the Adapter

Your adapter’s wiring and network designations are shown below.

Adapter

Adapter Status

Node Address Thumbwheel

DeviceNet Connector

Subnet Connector

NC = No Connection CHAS GND = Chassis Ground C = Common V = Supply

Status

DeviceNet

DeviceNet Status

Status

PointBus

PointBus/Subnet Status

Status

1734-ADNX

System

System Power

Power

Field

Field Power

Power

CHAS GND

Adapter/Field Power 12/24V dc

NC NC

This dc supply is

CHASCHAS

connected to the internal power bus.

You cannot supply power to the adapter from the DeviceNet

power supply.

42513

V dc

NC = No Connection CHAS GND = Chassis Ground C = Common V = Supply (Do not connect 120/240V ac power to this supply.)

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1-6 Installing the 1734-ADN(X) Adapter

Te rm in al Notes

0 No

Reserved

connection

1 No

connection

2 Chassis

Ground

3 Chassis

Ground 4 Common 5 Common 6 Voltage Input Apply 12/24V dc. Connects 7 Voltage Input

to the internal power bus.

DeviceNet Connection Plug Wiring and Subnet

Chapter Summary and What’s Next

DeviceNet connection

Black

Blue

Bare

White

Red

-V

CAN - Low

Shield

CAN - High

42514

In this chapter, you learned how to install and wire your adapter. Move to chapter 2 to learn about the 1734-ADN(X) adapter.

Publication 1734-UM002C-EN-P - July 2003

Chapter

What is the 1734-ADN(X) Adapter?

This chapter describes the POINT I/O DeviceNet adapter, including descriptions of the adapter’s features and functionality.

For more information about: See page:

Using the Adapter 2-2 Understanding the DeviceNet Network and Subnet 2-6 Adapter Features 2-8 Auto Start Mode 2-9 Communicating Through the Adapter 2-18 Communicating with I/O Modules 2-22 Using Diagnostic Tables 2-23 Chapter Summary and What’s Next 2-24

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2-2 What is the 1734-ADN(X) Adapter?

Using the Adapter

The adapter resides on the primary DeviceNet network and the Subnet simultaneously.

IMPORTANT

The PointBus maintains all DeviceNet network protocol but also offers configuration capabilities.

From this position, the adapter interfaces between DeviceNet devices and POINT I/O modules. The graphic below shows the adapter on the DeviceNet network and PointBus.

computer with PLC programming software

ControlNet network

PLC-5 processor

1784-PCD PCMCIA card

computer with RSNetWorx for DeviceNet software

DeviceNet network

1734-ADN adapter

Subnet (1734-ADNX only)

After you have installed your adapter into a POINT I/O system, you must perform the following tasks:

The steps mentioned above are explained briefly here and then in greater detail throughout this manual. You must complete the steps for the adapter to work with DeviceNet masters (e.g., 1756-DNB) on the primary network and Subnet modules.

POINT I/O modules

Module Status

DeviceNet

Status

DeviceBus Status

1734-ADN

1734-EP24DC

System Power

Field Power

42407

1. Set Subnet/Backplane Baudrate

2. Set Subnet I/O Module Addresses

3. Configure the Subnet I/O

4. Configure the Primary DeviceNet Network

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Set Subnet/Backplane Baudrate

The adapter and Subnet modules must use the same baudrate to communicate with each other. Use one or both of the following to set a Subnet baudrate.

• Enable or disable the Backplane Autobaud feature for POINT

I/O modules. POINT I/O modules have Autobaud enabled as the default- See page

• Set the adapter baudrate for the Subnet. The default for the

1734-ADN is 1Mbaud. The default for the 1734-ADNX is 125Kbaud - See page

2-12.

2-9.

IMPORTANT

You set the backplane baudrate for the 1734-ADN. You set the Subnet baudrate for the 1734-ADNX.

Set Subnet I/O Module Addresses

Once the adapter and POINT I/O modules are communicating at the same rate on the backplane, you must make sure all modules use a valid MAC ID.

Set the Auto Address feature for POINT I/O modules - See page 2-13.

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Configure the Subnet I/O

In the first two steps, you set a consistent communication rate and made sure each module uses address for communication. Next you must configure the PointBus (e.g., set scan list).

You can configure the PointBus using one of two methods: Auto Start Mode (ASM) or manually. For more information on configuring the PointBus using ASM, see Chapter 3 or see Chapter 4 for manual configuration.

Configure the Primary DeviceNet Network

Finally, you must configure the adapter for communication with a master (e.g., 1756-DNB).

For more information on configuring the DeviceNet network, see Chapter 5, Scanlist.

Adding the 1734-ADN(X) to the DeviceNet Scanner’s

You must understand all of the adapter’s features to effectively use it in your POINT I/O system. Keep these four steps in mind as you read this manual:

1. Set Subnet Baudrate

2. Set Subnet I/O Module Addresses

3. Configure the Adapter’s Scanlist

4. Configure the Primary DeviceNet Network

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Remove and Reinsert Modules on the Backplane

POINT I/O modules can easily be removed and reinserted on the 1734-ADN(X) backplane. If the removal and reinsertion is not done with caution, you can affect the adapter’s operations and, consequently, the entire POINT I/O application.

If you must remove and reinsert modules, we recommend the following:

• Do not move I/O modules to different locations on the DIN rail

after they have been installed and configured.

• Always place modules with the matching Removable Terminal

Block.

• If adjacent modules (i.e., 2 or more) are removed from the

backplane, replace all of them before attempting to operate the POINT I/O system. Input data will hold last state until all previously-removed modules are replaced.

IMPORTANT

The 1734-ADN(X) can only detect the location of POINT I/O modules residing on the 1734-ADN(X) backplane. It is the user’s responsibility to maintain all non-backplane devices, including POINT I/O modules attached to the Subnet with a 1734-PDN adapter.

– If adjacent modules are removed and all but one is returned,

the adapter cannot verify the location of the returned modules. For example, if modules are removed from nodes 3 and 4 and only the module from node 4 is returned, the adapter cannot verify the location. In this case, the adapter alerts you (via RSNetWorx for DeviceNet) that it cannot verify the presence of modules in the affected locations. I/O data will not be exchanged with this node until both modules have been reinserted.

– If modules of different types are removed and returned to

the wrong locations, the adapter identifies the returned modules and alerts you (via RSNetWorx for DeviceNet) that the error has occurred and must be corrected.

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– If modules of the same type are removed and returned to the

wrong locations, the adapter identifies the returned modules, updates their MAC IDs and continues operation.

IMPORTANT

The removal and return scenario exists whether the system is under power or not. If the system is under power, the scenario arises immediately. If the system is not under power, the scenario arises in the next power cycle.

Also, the example above shows removal of two adjacent modules. The scenario described exists anytime 2 or more adjacent modules are removed and not all are returned.

Care must be taken when replacing backplane I/O modules. Each I/O module stores its configuration parameters in internal non-volatile memory. You must either enable ADR for all modules or manually configure each module in a non-manufacturing environment when the module is being replaced or placed on the network for the first time. Failure to do so could result in inadvertent control attributed to different configuration settings.

Understanding the DeviceNet Network and Subnet

DeviceNet Network

Your adapter serves as a slave to DeviceNet masters. The adapter receives data from and returns data to the master through the following I/O connections:

• Change of State (COS)

• Cyclic

• Polled

• Strobe

Subnet Network

On the Subnet, your adapter acts as a scanner and is the master of the Subnet modules. The adapter performs the following functions:

• Exchanges I/O data with devices on Subnet

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• Collects I/O data from the Subnet and sends it to devices on the

DeviceNet network (e.g., scanners or controllers)

• Supplies power to the backplane I/O modules (See Appendix A

for power supply rules regarding I/O modules power requirements.)

Data Collection

The adapter collects I/O data from up to 63 modules via the Subnet. The I/O modules appear on the primary DeviceNet network as a single node, though, and require only one DeviceNet node address.

IMPORTANT

If Automatic Device Replacement (ADR) is enabled on the adapter, you can only connect up to 62 modules via the Subnet.

For more information on ADR, see page 2-15.

Module Power

The adapter supplies 5V logic power to POINT I/O modules by converting 24V dc field power to PointBus 5V power.

You can connect up to 63 I/O modules to each adapter, and you can power to the backplane I/O modules from the adapter (with a maximum of 10A of field power). You may use the integrated, isolated 24V dc expansion power unit (1734-EP24DC) to power additional I/O modules, as shown below.

1734-ADN adapter 12 POINT I/O modules

Adapter

Status

Network

Status

Subnet

Status

1734-ADNX

System Power Field Power

1734-EP24DC expansion power unit

1734-EP24DC

System Power

Field Power

31114-M

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For more information on the 1734-EP24DC expansion power unit, see:

• POINT I/O Technical Data, publication 1734-TD002

• POINT I/O 24V dc Expansion Power Supply Installation

Instructions, publication 1734-IN058

Adapter Features

Your adapter uses the following features on both the DeviceNet network and the PointBus:

• Self-Test

• Field Upgradable Firmware

• Fully Software Configurable

• Connections

• Baudrates

Self-Test

On power-up, the adapter performs a self-test. The adapter tests various internal and programmatic memories and checks the status indicators (LEDs).

Field Upgradable Firmware

You can update the adapter’s firmware with the ControlFlash Utility software. This feature lets you always use the most current application code.

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Fully Software Configurable

The adapter is fully software configurable using RSNetWorx for DeviceNet. You must configure the adapter for use with a DeviceNet master (e.g., 1756-DNB) and separately for use with Subnet devices.

For more information on how to configure your adapter for use with a DeviceNet master, see Chapter 5.

For more information on how to configure your adapter for use with Subnet modules, see Chapter 4, Adapter’s SubNet.

Configuring the 1734-ADN(X)

What is the 1734-ADN(X) Adapter? 2-9

Connections

Your adapter supports the following connections on both the primary DeviceNet network and Subnet:

• I/O connections:

– Polled – Strobe – Cyclic – COS

• Explicit connections

You can use I/O mapping to determine the data contained in each connection.

The adapter supports Master/Slave connection types on the DeviceNet network. On the Subnet, the adapter functions as a scanner device, exchanging data with I/O modules.

Baudrates

Choose baudrates for the adapter in the RSNetWorx for DeviceNet software. It supports these rates:

• 125Kbaud

• 250Kbaud

• 500Kbaud

• Autobaud - The adapter detects the primary DeviceNet network

baudrate and automatically sets its own baudrate to match the network.

• For the 1734-ADN, the PointBus can be configured to operate at

1Mbaud (1000Kbaud).

Auto Start Mode

Auto Start Mode lets you easily get your adapter installed and operating. In this mode, the adapter’s configurable features operate as they were most recently configured. For example, if Autobaud on DeviceNet was enabled in the adapter’s last configuration, it will be enabled when Auto Start Mode is used.

For a more detailed explanation of how to use Auto Start Mode, see Chapter 3.

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Auto Catalog Replace

Auto Catalog Replace corrects errors that might occur when backplane modules of the same type are removed and replaced in the wrong location. If modules of the same type are removed and returned to the wrong locations, the adapter identifies the returned modules, updates their MAC IDs and continues operation.

IMPORTANT

If modules of different types are removed and returned to the wrong locations, the adapter identifies the returned modules and alerts you (via RSNetWorx for DeviceNet, the Node Status Table, and the Faulted Node Table) that the error has occurred and must be corrected.

Also, the example above shows removal of two adjacent modules. The scenario described exists anytime 2 or more adjacent modules are removed and not all are returned.

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Backplane (1734-ADN)/Subnet (1734-ADNX) Baudrate

EDS parameter Backplane Baudrate is accessible from the primary DeviceNet and sets a specific baudrate for all backplane I/O modules.

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