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Reference Manual

(Catalog Numbers

XXX XXX XXXX XXX

XXX XXX

)

Logix5000 Data Access

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 available from your local Rockwell Automation sales

office or online at http://literature.rockwellautomation.com

) 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 Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or

application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements

associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the

examples and diagrams.

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

this manual.

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

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

Allen-Bradley, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

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.

IMPORTANT

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

ATTENTION

Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic

loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence

SHOCK HAZARD

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

BURN HAZARD

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

temperatures.

1 Publication 1756-RM005B-EN-P - June 2008

Table of Contents

Preface

Purpose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Logix5000 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

When to Use this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 1

CIP Services

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CIP Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Logix Data Stuctures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Segment Encoding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Data Type Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Returned Data Formats with Data Type Reporting Value . . . . . . 12

Array Indexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CIP Service Request/Response Format . . . . . . . . . . . . . . . . . . . . . 14

Commands Supported by Logix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Read Data Fragmented Format Service . . . . . . . . . . . . . . . . . . . . . 16

CIP Write Data Table Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Data Table Read-Modify-Write (RMW) Message . . . . . . . . . . . . . 17

Get Attributes List Service of Template. . . . . . . . . . . . . . . . . . . . . 19

Read Template Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Write Data Fragmented Format Service. . . . . . . . . . . . . . . . . . . . . 21

Multiple Service Packet Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Chapter 2

Addressing Examples

Access Atomic and Pre-Defined Data Types . . . . . . . . . . . . . . . . . . . . 26

Access User-Defined Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Chapter 3

Programmable Controller

Communication Commands

PLC-2 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Unprotected Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Protected Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Unprotected Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Protected Bit Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Unprotected Bit Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

PLC-5 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Read Modify Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Read Modify Write N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Typed Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Typed Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Word Range Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Word Range Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Bit Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

SLC Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SLC Protected Typed Logical Read with 3 Address Fields . . . . . . 46

Publication 1756-RM005B-EN-P - June 2008

2 Table of Contents

SLC Protected Typed Logical Write with 3 Address Fields . . . . . 46

SLC Protected Typed Logical Read with 2 Address Fields . . . . . . 46

SLC Protected Typed Logical Write with 2 Address Fields . . . . . 47

Chapter 4

PLC-5 Commands

Read Modify Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Read Modify Write N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Typed Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Reply format: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Typed Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Word Range Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Reply Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Word Range Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Bit Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Chapter 5

SLC Commands

SLC Protected Typed Logical Read with 3 Address Fields . . . . . . . . . 58

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

SLC Protected Typed Logical Write with 3 Address Fields. . . . . . . . . 58

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

SLC Protected Typed Logical Read with 2 Address Fields . . . . . . . . . 59

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

SLC Protected Typed Logical Write with 2 Address Fields. . . . . . . . . 59

Command format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Reply format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Appendix A

Map an Address

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

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