Rockwell Automation Allen-Bradley ControlNet 1786 Series Manual de usuario

ControlNet Coax

Media Planning

and Installation

Guide

1786-series

Installation Instructions

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:

Allen-Bradley is a trademark of Rockwell Automation

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.

1Publication CNET-IN002A-EN-P - December 2001

Preface

What’s in This Chapter

This manual describes the required components of a ControlNet™

Coax media system and how to plan for and install these required

components.

Abbreviations and Symbols

Related Publications

For information about this topic: Read:

Understand the ControlNet Coax Media System Chapter 1

Plan a ControlNet Coax Media System Chapter 2

Install a ControlNet Coax Media System Chapter 3

Reference Mount dimensions (taps and universal

mounting bracket)

Appendix A

Maintain the Cable Strip Tool Appendix B

IMPORTANT We assume that you understand the fundamentals of

electronics and electrical codes. If you do not, you

should not attempt the procedures described in this

manual.

This Means

PVC cable polyvinyl chloride cable

FEP cable fluorinated ethylene propylene cable

PLC processor Allen-Bradley programmable logic controller

network continues

Publication: Publication

Number:

ControlNet Cable System Component List AG-2.2

Industrial Automation Wiring and Grounding Guidelines 1770-4.1

Publication CNET-IN002A-EN-P - December 2001

Common Techniques Used

in This Manual

The following conventions are used throughout this manual:

•bulleted lists provide information, not procedural steps

•numbered lists provide sequential step

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,

use Pre-Sales e-mail at [email protected].com

TIP This symbol identifies helpful tips.

Publication CNET-IN002A-EN-P - December 2001

Obtain Technical Product Support

If you need to contact Rockwell Automation for technical assistance,

try one of the following methods:

•Call your local Rockwell Automation representative

•ControlNet Post-sales Technical Support, 1.440.646.5800

•Web Links: http://www.ab.com — as a registered member, go to

http://www.ab.com/mem/technotes/techmain.html

Your Questions or Comments about This Manual

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

enclosed “How are We Doing” form (at the back of this manual).

If you have any suggestions about how we can make this manual

more useful to you, please contact us at the following address:

Rockwell Automation

Control and Information Group

Technical Communications

1 Allen-Bradley Drive

Mayfield Heights OH 44124-6118

email: [email protected]

Publication CNET-IN002A-EN-P - December 2001

Notes:

iPublication CNET-IN002A-EN-P - December 2001

Table of Contents

Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Preface

What’s in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Abbreviations and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Common Techniques Used in This Manual. . . . . . . . . . . . . . . 2

Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . 2

Local Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Technical Product Assistance . . . . . . . . . . . . . . . . . . . . . . 2

Obtain Technical Product Support . . . . . . . . . . . . . . . . . . 3

Your Questions or Comments about This Manual . . . . . . . 3

Chapter 1

Overview of The ControlNet Coax

Media System

What’s in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Understand the ControlNet Cable System . . . . . . . . . . . . . . 1-1

Understand the ControlNet Components . . . . . . . . . . . . . . 1-2

Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Trunk Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Cable Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Segments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

What’s Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Chapter 2

Plan a ControlNet Coax Media

System

What’s in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Determine the Number of Taps You Need . . . . . . . . . . . . . 2-1

Connect Program Devices . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Determine What Type of Cable You Need . . . . . . . . . . . . . 2-4

Determine Trunk Cable Section Lengths. . . . . . . . . . . . . . . 2-5

Determine How Many Terminators You Need . . . . . . . . . . 2-7

Determine if You Need Repeaters . . . . . . . . . . . . . . . . . . . 2-7

Configure Your Link With Repeaters. . . . . . . . . . . . . . . 2-8

Determine What Type of Connectors You Need . . . . . . . . . 2-10

Using Redundant Media (Optional) . . . . . . . . . . . . . . . . . . 2-11

Using IP67 Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . 2-15

General Wring Guidelines . . . . . . . . . . . . . . . . . . . . . . 2-16

Order Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Create a General Plan . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Plan Your Segments. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Publication CNET-IN002A-EN-P - December 2001

Table of Contents ii

Order Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

What’s Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Chapter 3

Install a ControlNet Coax Media

System

What’s in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Install the Trunk Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Wire the External to Enclosures . . . . . . . . . . . . . . . . . . 3-2

Wire Inside Enclosures. . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Mount the Taps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Select Where To Mount The Taps. . . . . . . . . . . . . . . . . 3-2

Mount the Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Install a Repeater Adapter . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Install Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Collect Your Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Locally Available Tools. . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Calibrate the Cutting Blades. . . . . . . . . . . . . . . . . . . . . . . . 3-7

Strip the Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Attach the Connectors to the Cable . . . . . . . . . . . . . . . . . . 3-14

Test for Electrical Shorts and Continuity . . . . . . . . . . . . . . . 3-18

Connect Cable Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Terminate Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Connect Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Connect Programming Terminals Through the NAP. . . . 3-21

Connect the Repeater to a ControlNet Link . . . . . . . . . . 3-22

Appendix A

Mounting Dimensions

What’s in This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Taps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Universal Mounting Bracket. . . . . . . . . . . . . . . . . . . . . . . . A-2

Appendix B

Maintain the Cable Strip Tool

What’s in This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Reverse/Replace the Cutting Blades . . . . . . . . . . . . . . . . . . B-1

Change the Memory Blade Holder . . . . . . . . . . . . . . . . . . . B-3

Index

1Publication CNET-IN002A-EN-P - December 2001

Chapter

Overview of The ControlNet Coax

Media System

What’s in This Chapter

Read this chapter to familiarize yourself with the ControlNet cable

system.

Understand the ControlNet

Cable System

The ControlNet cable system gives you the flexibility to design a

communication network for your particular application. To take full

advantage of this flexibility, you should spend sufficient time planning

how to install your network before assembling any of the hardware.

Use the following figure and term definitions to understand the

ControlNet cable system.

For information about this topic: See page:

Understand the ControlNet Cable System 1-1

Understand the ControlNet Components 1-2

TTTTT

40952

etwork

segment

link

trunk-cable

segment

link (one segment)

Term Means

bridge a device that allows traffic to pass from one link to another link

link a collection of nodes with unique addresses in the range of

1-99

network a collection of connected nodes — the connection paths

between any pair of devices may include repeaters and bridges

Publication CNET-IN002A-EN-P - December 2001

1-2 Overview of The ControlNet Coax Media System

Understand the ControlNet

Components

The ControlNet Coax media system is made up of these components. For

information on purchasing these components see the ControlNet

Cable System Component List (publication AG-2.2).

•nodes

•taps

•trunk cable

•cable connectors

•terminators

•segments

•repeaters

•links

•bridges

•network

node any physical device connecting to the ControlNet cable system

which requires a network address in order to function on the

network — a link may contain a maximum of 99 nodes

this address must be in the range of 1 - 99 and be unique to

that link

repeater a two-port active physical layer component that reconstructs

and retransmits all traffic it hears on one segment side to

another segment side

segment trunk-cable sections connected via taps with terminators at

each end and with no repeaters

tap the connection between any device and the

ControlNet Coax Media system

terminator a 75Ωresistor mounted in a BNC plug

trunk cable the bus or central part of a cable system

trunk-cable section a length of a cable between any two taps

Term Means

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