Allen-Bradley ControlLogix User manual

User

Manual

ControlLogix

Data Highway Plus/

Remote I/O

Communication

Interface Module

Allen-Bradley

File Name: AB_ControlLogixDataHighway_1756_DHRIO_user_D898

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) describes some important differences between

solid state 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 the Allen-Bradley Company 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, the Allen-Bradley Company

cannot assume responsibility or liability for actual use based on the

examples and diagrams.

No patent liability is assumed by Allen-Bradley Company 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 the Allen-Bradley Company is prohibited.

Throughout this manual we use notes to make you aware of safety

considerations.

Attentions help you:

• identify a hazard

• avoid the hazard

• recognize the consequences

Important: Identifies information that is especially important for

successful application and understanding of the product.

Ethernet is a registered trademark of Digital Equipment Corporation, Intel and Xerox Corporation.

Microsoft is a registered trademark of Microsoft Corporation.

Windows, Windows 95 and Windows NT are trademarks of Microsoft Corporation.

ControlLogix and Data Highway Plus are trademarks of the Allen-Bradley Company, Inc.

!

ATTENTION: Identifies information about practices or

circumstances that can lead to personal injury or death,

property damage, or economic loss.

Publication 1756-6.5.14 - August 1998

Preface

About This User Manual

What This Preface Contains This preface describes how to use this manual. The following table

describes what this preface contains and its location.

Who Should Use this Manual We assume you have a good understanding of the Data Highway Plus

protocol and Remote I/O. This user manual contains a brief

description of Data Highway Plus in Chapter 2 and a brief description

of Remote I/O in Chapter 7.

Purpose of This Manual This manual describes how to understand, configure and troubleshoot

your ControlLogix Data Highway Plus/Remote I/O communication

interface module.

For installation information, refer to the ControlLogix Data Highway

Plus Communication Interface Module Installation Instructions,

publication 1756-5.4.

For information about: See page:

Who Should Use This Manual P-1

Purpose of This Manual P-1

Conventions and Related Terms P-2

Related Products and

Documentation

The following table lists related ControlLogix products and

documentation:

If you need more information on these products, contact your local

Allen-Bradley integrator or sales office for assistance. For more

information on the documentation, refer to the Allen-Bradley

Publication Index, publication SD499.

Rockwell Automation Support Rockwell Automation offers support services worldwide, with over

75 sales/support offices, 512 authorized distributors and 260

authorized systems integrators located throughout the United States

alone, plus Rockwell Automation representatives in every major

country in the world.

Local Product Support

Contact your local Rockwell Automation representative for:

•sales and order support

•product technical training

•warranty support

•support service agreements

Technical Product Assistance

If you need to contact Rockwell Automation for technical assistance,

please review the troubleshooting information in Appendix A first. If

problem persists, then call your local Rockwell Automation

representative.

Your Questions or Comments on this Manual

If you find a problem with this manual, please notify us of it on the

enclosed Publication Problem Report.

Catalog

number:

Document title:

Publication

number:

1756-DHRIO Data Highway Plus Communication Interface Module

Installation Instructions

1756-5.4

1756-GTWY ControlLogix Gateway Configuration Tool Quick Start 1756-10.2

Table of Contents

Publication 1756-6.5.14 - August 1998

ControlLogix Data Highway Plus/

Remote I/O Communication

Interface Module

Chapter 1

What the Module Does . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Routing Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

DH+ and CIP Messaging . . . . . . . . . . . . . . . . . . . . 1-2

Remote I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Module Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Setting Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Alphanumeric Indicators . . . . . . . . . . . . . . . . . . . . 1-6

Compliance to European Union Directives . . . . . . . . . . 1-6

EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . 1-7

Preventing Electrostatic Discharge . . . . . . . . . . . . . . . . 1-7

Removal and Insertion Under Power . . . . . . . . . . . . . . . 1-8

Chapter Summary and What’s Next . . . . . . . . . . . . . . . 1-8

Basics of Using Data

Highway Plus

Chapter 2

What is Data Highway Plus . . . . . . . . . . . . . . . . . . . . . . 2-1

Selecting Devices that You Can Connect . . . . . . . . . . . 2-1

Link Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Programming Terminal Port . . . . . . . . . . . . . . . . . . . . . 2-2

Application Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Chapter Summary and What’s Next . . . . . . . . . . . . . . . 2-3

DH+ Operation Chapter 3

Two Methods of Communication Over

Data Highway Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Using DH+ Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Benefits of DH+ Messaging . . . . . . . . . . . . . . . . . . . . . 3-2

Local DH+ Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Receiving Local DH+ Messages on DH+ . . . . . . . 3-3

Sending Local DH+ Messages on DH+ . . . . . . . . 3-3

Limitations of Local DH+ Messaging . . . . . . . . . . 3-4

Routing Error in Local DH+ Messaging . . . . . . . . 3-5

Before Programming in a Controller . . . . . . . . . . . . . . . 3-5

Remote DH+ Messaging . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Limitations of Remote DH+ Messaging . . . . . . . . 3-9

Routing Errors in Remote DH+ Messaging . . . . . 3-9

Configuration Information in DH+ Messaging . . . . . . 3-10

Generating Configuration Faults . . . . . . . . . . . . . 3-10

Application Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

toc–ii Table of Contents

Publication 1756-6.5.14 - August 1998

Example of an Application Timeout . . . . . . . . . . 3-11

Example DH+ Routing Configuration . . . . . . . . . . . . . 3-12

Using Control and Information

Protocol (CIP) Messaging . . . . . . . . . . . . . . . . . . . . 3-13

Limitations of CIP Messaging . . . . . . . . . . . . . . . 3-14

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

Programming Terminal

Operation Over DH+

Chapter 4

Connecting Your Programming Terminal

Over DH+ Using RSLogix 5 . . . . . . . . . . . . . . . . . . . 4-1

Connecting Your Programming Terminal

Over DH+ RSLogix 500 . . . . . . . . . . . . . . . . . . . . . . 4-2

Connecting Your Programming Terminal

Over DH+ Using RSLogix 5000 . . . . . . . . . . . . . . . . 4-3

Defining Connection Paths . . . . . . . . . . . . . . . . . . . . . . 4-5

Connection path examples . . . . . . . . . . . . . . . . . . . 4-6

Chapter Summary and What’s Next . . . . . . . . . . . . . . . 4-9

PLC-5 or SLC-5/04 to PLC-5 or

SLC-5/04 Messaging

Chapter 5

DH+ Messaging Between PLC-5s With

One 1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . . 5-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 5-3

Set-Up a Routing Table for the1756-DHRIO Module 5-3

Configure Message Instructions . . . . . . . . . . . . . . 5-4

DH+ Messaging Between SLC-5/04s With

Two 1756-DHRIO Modules With One

ControlLogix Chassis . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 5-6

Set-Up a Routing Table for the First

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 5-7

Set-Up a Routing Table for the Second

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 5-7

Configure Message Instructions . . . . . . . . . . . . . . 5-8

DH+ Messaging Between PLC-5s With

Multiple ControlLogix Chassis . . . . . . . . . . . . . . . . . 5-9

Set the Module Switches . . . . . . . . . . . . . . . . . . . 5-10

Set-Up a Routing Table for the First

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . 5-11

Set-Up a Routing Table for the Second

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . 5-11

Configure Message Instructions . . . . . . . . . . . . . 5-12

DH+ Messaging From PLC-5 to PLC-5/C

on ControlNet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Set the Module Switches . . . . . . . . . . . . . . . . . . . 5-14

Set-Up a Routing Table for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . 5-15

Configure Message Instructions . . . . . . . . . . . . . 5-16

Chapter Summary and What’s Next . . . . . . . . . . . . . . 5-16

Table of Contents toc–iii

Publication 1756-6.5.14 - August 1998

PLC-5 or SLC-5/04 to Logix5550

Messaging

Chapter 6

DH+ Messaging From a PLC-5 to One Logix5550

With One ControlLogix Chassis . . . . . . . . . . . . . . . . 6-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 6-3

Set-Up a Controller Slot for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 6-4

Configure Message Instructions . . . . . . . . . . . . . . 6-5

DH+ Messaging From a PLC-5 to Multiple

Logix5550s With One ControlLogix Chassis . . . . . . 6-6

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 6-7

Set-Up a Controller Slot for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 6-8

Set-Up a Routing Table for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 6-9

Configure Local Message Instructions . . . . . . . . 6-10

Configure Remote Message Instructions . . . . . . . 6-11

DH+ Messaging From a SLC-5/04 to a Logix5550

With Multiple ControlLogix Chassis . . . . . . . . . . . . 6-12

Set the Module Switches . . . . . . . . . . . . . . . . . . . 6-13

Set-Up a Routing Table for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . 6-14

Configure Message Instructions . . . . . . . . . . . . . 6-15

Chapter Summary and What’s Next . . . . . . . . . . . . . . 6-16

Logix5550 to PLC-5 or SLC-5/04

Messaging

Chapter 7

Local DH+ Messaging From a Logix5550 to

a PLC-5 With One ControlLogix Chassis . . . . . . . . . 7-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 7-3

Configure Message Instructions . . . . . . . . . . . . . . 7-4

DH+ Messaging From a Logix5550 to a PLC-5

With Multiple ControlLogix Chassis Over DH+ . . . . 7-5

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 7-6

Set-Up a Routing Table for the First

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 7-7

Set-Up a Routing Table for the Second

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . . 7-7

Configure Message Instructions . . . . . . . . . . . . . . 7-8

DH+ Messaging From a Logix5550 to a SLC-5/04

Over ControlNet and DH+ With Multiple

ControlLogix Chassis . . . . . . . . . . . . . . . . . . . . . . . . . 7-9

Set the Module Switches . . . . . . . . . . . . . . . . . . . 7-10

Set-Up a Routing Table for the

1756-DHRIO Module . . . . . . . . . . . . . . . . . . . 7-11

Configure Message Instructions . . . . . . . . . . . . . 7-12

Chapter Summary and What’s Next . . . . . . . . . . . . . . 7-13

toc–iv Table of Contents

Publication 1756-6.5.14 - August 1998

Logix5550 to Logix5550

Messaging

Chapter 8

CIP Messaging Between a Logix5550 and

a Logix5550 Over One Link . . . . . . . . . . . . . . . . . . . 8-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 8-3

Configure Message Instructions . . . . . . . . . . . . . . 8-4

CIP Message Routing Between a Logix5550 and

a Logix5550 Over Two Links . . . . . . . . . . . . . . . . . . 8-5

Set the Module Switches . . . . . . . . . . . . . . . . . . . . 8-6

Configure Message Instructions . . . . . . . . . . . . . . 8-7

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

Basics of Using Remote I/O Chapter 9

Introduction to Remote I/O . . . . . . . . . . . . . . . . . . . . . . 9-1

Selecting Devices That You Can Connect . . . . . . . . . . . 9-2

Designing a Remote I/O Network . . . . . . . . . . . . . . . . . 9-3

Network Design Guidelines . . . . . . . . . . . . . . . . . 9-3

Cable Design Guidelines . . . . . . . . . . . . . . . . . . . . 9-3

Configuring a DHRIO Channel as a RIO Scanner . . . . 9-5

Chapter Summary and What’s Next . . . . . . . . . . . . . . . 9-6

Communicating with Remote I/O Chapter 10

DHRIO Module Operation . . . . . . . . . . . . . . . . . . . . . 10-1

Exchanging I/O Data Between Adapters on

the RIO Link and the 1756-DHRIO Module . . 10-2

Exchanging I/O Data Between the Logix5550

and the 1756-DHRIO Module . . . . . . . . . . . . . 10-2

I/O Configuration Tree in Controller Organizer

in RSLogix 5000 . . . . . . . . . . . . . . . . . . . . . . . 10-3

RIO Scanner Status . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Adapter Module I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Setting the Rate of Data Exchange Between the

Logix5550 and the 1756-DHRIO Module . . . . . . . . 10-4

Requested Packet Interval (RPI) . . . . . . . . . . . . . 10-4

RIO Scanner Status Update Rate With the

1756-DHRIO in a Local Chassis . . . . . . . . . . . 10-4

RIO Scanner Status Update Rate With the

1756-DHRIO Module in a Remote Chassis . . 10-4

Setting the Rate of I/O Data Exchange Between

the Logix5550 and the 1756-DHRIO Module . . . . . 10-5

Minimum Requested Packet Intervals (RPIs) . . . 10-6

Adapter Module I/O Update Rate with

the 1756-DHRIO Module in the Local Chassis 10-7

Adapter Module I/O Update Rate with the

1756-DHRIO Module in the Remote Chassis . 10-8

RIO Scanner Failure Notification . . . . . . . . . . . . . . . . 10-9

RIO Adapter Failure Notification . . . . . . . . . . . . . . . . 10-9

Inhibiting the DHRIO Module Connections . . . . . . . 10-10

Table of Contents toc–v

Publication 1756-6.5.14 - August 1998

Inhibiting an RIO Connector Adapter . . . . . . . . . . . . 10-10

Increased Remote I/O System Throughput . . . . . . . . 10-11

Sending Block Transfer Data . . . . . . . . . . . . . . . . . . . 10-12

Block Transfer Notification . . . . . . . . . . . . . . . . . . . . 10-12

Block Transfer ‘Pass-Through’ Messages . . . . . . . . . 10-13

Troubleshooting Remote I/O

Communication Difficulties . . . . . . . . . . . . . . . . . . 10-14

Chapter Summary and What’s Next . . . . . . . . . . . . . 10-16

Connecting a Logix5550 to

Remote I/O

Chapter 11

Scanning Remote FLEX Adapter Through a

1756-DHRIO Module in a Local 1756-Chassis . . . . 11-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . 11-3

Configure DHRIO Module . . . . . . . . . . . . . . . . . 11-3

Configure the FLEX Adapter . . . . . . . . . . . . . . . 11-4

Scanning Remote FLEX Adapters Through

Multiple 1756-DHRIO Modules in a Local Chassis 11-6

Set the Module Switches . . . . . . . . . . . . . . . . . . . 11-7

Configure 1st DHRIO Module . . . . . . . . . . . . . . 11-7

Configure 1st FLEX Adapter . . . . . . . . . . . . . . . 11-8

Configure 2nd DHRIO Module . . . . . . . . . . . . . 11-10

Configure 2nd FLEX Adapter . . . . . . . . . . . . . . 11-11

Scanning 1771 Remote I/O Adapters Through

a 1756-DHRIO in a Remote Chassis . . . . . . . . . . . 11-12

Set the Module Switches . . . . . . . . . . . . . . . . . . 11-13

Configure 1st CNB Module . . . . . . . . . . . . . . . 11-14

Configure 2nd CNB Module . . . . . . . . . . . . . . . 11-15

Configure DHRIO Module . . . . . . . . . . . . . . . . 11-16

Configure 1771-ASB Adapter . . . . . . . . . . . . . . 11-17

Run RSNetworx . . . . . . . . . . . . . . . . . . . . . . . . 11-18

Chapter Summary and What’s Next . . . . . . . . . . . . . 11-18

Block Transfers Chapter 12

Block Transfers to Remote FLEX I/O Modules

Through a 1756-DHRIO in a Local Chassis . . . . . . 12-2

Set the Module Switches . . . . . . . . . . . . . . . . . . . 12-3

Configure DHRIO Module . . . . . . . . . . . . . . . . . 12-3

Configure the FLEX Adapter . . . . . . . . . . . . . . . 12-4

Configure Block Transfer Module . . . . . . . . . . . 12-6

Configure Message Instruction. . . . . . . . . . . . . . . 12-7

Block Transfers to Remote 1771-ASB I/O Modules

Through a 1756-DHRIO in a Remote Chassis . . . . . 12-8

Set the Module Switches . . . . . . . . . . . . . . . . . . . 12-9

Configure 1st CNB Module . . . . . . . . . . . . . . . 12-10

Configure 2nd CNB Module . . . . . . . . . . . . . . . 12-11

Configure DHRIO Module . . . . . . . . . . . . . . . . 12-12

Configure 1771-ASB Adapter . . . . . . . . . . . . . . 12-13

Configure 1771-BT Module . . . . . . . . . . . . . . . 12-14

toc–vi Table of Contents

Publication 1756-6.5.14 - August 1998

Chapter Summary and What’s Next . . . . . . . . . . . . . 12-15

Troubleshooting Chapter 13

Checking Power Supply and Module Status . . . . . . . . 13-1

Troubleshooting the Power Supply . . . . . . . . . . . . . . . 13-2

Troubleshooting the Module . . . . . . . . . . . . . . . . . . . . 13-2

Monitoring DH+ Communication Channels . . . . . . . . 13-5

Chapter Summary and What’s Next . . . . . . . . . . . . . . 13-6

PCCC Commands Supported by

the Data Highway Plus Module

Appendix A

Specifications Appendix B

Publication 1756-6.5.14 - August 1998

Chapter

1

ControlLogix Data Highway Plus/Remote

I/O Communication Interface Module

What This Chapter Contains This chapter describes the module and what you must know and do

before you begin to use it. The following table describes what this

chapter contains and its location.

What the Module Does The Data Highway Plus/RIO module supports the following types

of communication:

• DH+ Messaging

• Control and Information Protocol (CIP) Messaging

• Remote I/O

You can send messages between devices on Data Highway Plus

networks and devices on other networks such as ControlNet,

Ethernet, or other DH+.

Using the RIO functionality, a 1756-DHRIO channel in scanner mode

transfers discrete and block-transfer data with remote I/O devices.

This module allows connection to multiple remote I/O adapters.

Routing Limitations The 1756-DHRIO module has the capability of routing a message

through up to four communications networks and three chassis. This

is only a limitation on the routing of a message and not on the total

number of networks or chassis in a system.

For information about: See page:

What the Module Does 1-1

Routing Limitations 1-1

Module Features 1-4

Compliance to European Union Directives 1-6

Preventing Electrostatic Discharge 1-7

Removal and Insertion Under Power 1-8

Chapter Summary and What’s Next 1-8

Publication 1756-6.5.14 - August 1998

1-2 ControlLogix Data Highway Plus/Remote I/O Communication Interface Module

DH+ and CIP Messaging

The 1756-DHRIO module allows an information exchange between

devices, such as PLCs, Logix5550 processors in ControlLogix

chassis, and SLCs.

With the 1756-DHRIO module, you may exchange information in

any of the following scenarios:

• between PLCs/SLCs on different networks

• between the Logix5550 and a PLC/SLC

• between Logix5550s

The following illustration shows an example system. Two

ControlLogix Gateways link existing Data Highway Plus networks.

Communication between PLC-5 programmable controllers on

different networks is accomplished in the same manner used for

communication within a network.

41275

Data Collection and

Recipe Management

Programming

Terminal

ControlLogix

Chassis

ControlLogix

Chassis

Data Highway Plus

PLC-5

Data Highway Plus

SLC 500 RSView PLC-5 SLC 500 RSView

Publication 1756-6.5.14 - August 1998

ControlLogix Data Highway Plus/Remote I/O Communication Interface Module 1-3

Remote I/O

When a channel on the module is configured for Remote I/O, the

module will act as a scanner for the RIO network. The Logix5550

controller (1756-L1) communicates to the module’s RIO scanner to

send and receive the I/O on the RIO network.

The following illustration shows an example system.

41276

ControlLogix

chassis

DHRIO moduleLogix5550

1771-ASB

1746-ASB

PLC-5/20 in Adapter mode

1794-FLEX I/O

Remote I/O

Publication 1756-6.5.14 - August 1998

1-4 ControlLogix Data Highway Plus/Remote I/O Communication Interface Module

Module Features Use the following illustration to identify the external features of the

Data Highway Plus/RIO module.

Other module features are:

• uses routing table that allows DH+ only devices to use the

1756-DHRIO module and ControlLogix chassis to access

other networks

• supports routing communications to and from other

modules

• has no limit on number of modules per chassis, up to the

number of available slots and the capabilities of the

power supply

• can be removed and inserted under power without

disrupting power to other modules in the chassis

41278

Network Type switches

(behind cover)

41277

Network Address switches

(behind cover)

Backplane

connector

(CIP=Port 1)

Side

view

Front

view

Alphanumeric

status indicator

Channel and

module status

indicators

8-pin mini-DIN

Programming

Terminal

Channel A

(CIP=Port 2)

Wiring

label

Door

Switch 1 Switch 6

Channel A

Network Type

Channel B

Network Type

0

31

5

4

2

6

7

Switch 2

(10s)

Channel A Address

Shown in Position 10

Switch 3

(1s)

Channel B Address

Shown in Position 24

Channel

A

Channel

B

Specify Network Type Set Switch

0

1

2-7

0

1

2-7

DH+

RIO Scanner

Illegal

DH+

RIO Scanner

Illegal

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

Switch 4

(10s)

Switch 5

(1s)

Channel B

(CIP=Port 3)

Publication 1756-6.5.14 - August 1998

ControlLogix Data Highway Plus/Remote I/O Communication Interface Module 1-5

Setting Switches

Before installing the module, you must set the network type switches

for DH+ or RIO, depending on your application. For a channel

configured as DH+, you must also select a node address within the

range of 00-77. Node addresses are set and displayed in octal.

Important: If you require a channel to be configured for DH+, use

Channel A. By doing so, you can connect your

programming terminal to the connector on the front of

the module and communicate to devices on the network.

If only one channel is needed for RIO, use Channel B.

Set the network type and node address switches as shown below.

Switch 1 Switch 6

Channel A

Network Type

Channel B

Network Type

0

31

5

4

2

6

7

0

31

5

4

2

6

7

Switch 2

(10s)

Channel A Address

Shown in Position 10

Switch 4

(10s)

Switch 5

(1s)

Switch 3

(1s)

Channel B Address

Shown in Position 24

Channel

A

Channel

B

Specify Network Type Set Switch

0

1

2-7

0

1

2-7

DH+

RIO Scanner

Illegal

DH+

RIO Scanner

Illegal

Network type

switches

(behind cover)

20810

Node type switches

(behind cover)

This example shows

channel A set for DH+

and channel B set RIO

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

0

31

5

4

2

6

7

This example shows A node address

at 010 and channel B at 024

Specify Network Type Set Switch

Channel

A

DH+ 0

RIO Scanner 1

Illegal 2-7

Channel

B

DH+ 0

RIO Scanner 1

Illegal 2-7

Important: These node switches

are not used with RIO.

Publication 1756-6.5.14 - August 1998

1-6 ControlLogix Data Highway Plus/Remote I/O Communication Interface Module

Alphanumeric Indicators

At module power-up, the alphanumeric indicator illuminates and

cycles through a sequence of power-up messages.

Included in the sequence is a scrolling display of the series letter, two

digits of the firmware major revision, a dot, and two digits of the

firmware minor revision. For example, the display will scroll B02.14

for a series B module with firmware revision 2.14.

After the power-up sequence, a sequence of information and status

messages are displayed on a continuous cycle. The following table

shows the sequence of messages for a module that has channel A set

for DH+ and channel B set for RIO.

The module’s alphanumeric indicators will stop cycling and display

an error message or error code if it detects an error that is severe. See

chapter 13 for a detailed list of the error messages and the cyclic

status messages that my display across the alphanumeric indicator

and for troubleshooting information.

Compliance to

European Union Directives

This product has the CE mark and 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 Council Directive 89/336/EEC

Electromagnetic Compatibility (EMC) and the following standards,

in whole or in part, documented in a technical construction file:

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

Industrial Environment

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

Industrial Environment

This product is intended for use in an industrial environment.

Table 1.1

Data Highway Plus/Remote I/O

Sequence of

display:

Where:

A DH

A#XX

XXXX

A is the channel (A or B) and DH indicates network type is DH+

XX is the channel’s node address

XXXX is the channel’s status message

B IO

SCAN

XXXX

B is the channel (A or B) and IO is network type

SCAN indicates scanner

XXXX is the channel’s status message

Publication 1756-6.5.14 - August 1998

ControlLogix Data Highway Plus/Remote I/O Communication Interface Module 1-7

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

For Noise Immunity, publication 1770-4.1

• Guidelines for Handling Lithium Batteries,

publication AG-5.4

• Automation Systems Catalog, publication B111

Preventing Electrostatic Discharge The Data Highway Plus module is sensitive to electrostatic discharge.

!

ATTENTION: 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

Publication 1756-6.5.14 - August 1998

1-8 ControlLogix Data Highway Plus/Remote I/O Communication Interface Module

Removal and Insertion Under

Power

This module is designed to be installed or removed while chassis

power is applied.

Chapter Summary and What’s Next In this chapter you learned about:

• what the module does

• module features

• compliance to European Union Directives

• electrostatic discharge

• removal and insertion under power

Move on to Chapter 2 to learn about Using Data Highway Plus.

!

ATTENTION: 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 devices 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.

Allen-Bradley ControlLogix, ControlLogix 1756-DHRIO User manual

Related papers

Other documents