Allen-Bradley 1756-L5 Betriebsanleitung

Programming Manual

Logix5000 Controllers Messages

Catalog Numbers

1756-L1, 1756-L55, 1756-L61, 1756-L62, 1756-L63, 1769-L31, 1769-L32C, 1769-L32E, 1769-L35CR, 1769-L35E,

1789-L60, 1794-L34, PowerFlex 700S/SE

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://www.rockwellautomation.com/literature/) 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, Logix5000, RSLogix 5000, ControlLogix, GuardLogix, CompactLogix, PowerFlex, SoftLogix, Rockwell Software, PLC-2, PLC-3, PLC-5, SLC, SLC 500, 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.

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.

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

Rockwell Automation Publication 1756-PM012D-EN-P - November 2011 3

Summary of Changes

This manual contains new and updated information. Changes throughout this

revision are marked by change bars, as shown to the right of this paragraph.

New and Updated Information

This table contains the changes made to this revision.

Topic Page

Added information on the Large Connection checkbox to second footnote under

table.

Added a new row to the table that discusses “If the MSG instructions are to” —

New row starts with “Same device and cached and large connection”.

Added additional information to the example given for Share a Connection. 12

Changed Destination to Destination Element to reflect changes to the UI. 14

Updated instructions on setting the path to a remote controller. 27

Updated the screen shot to reflect changes to the UI. 30

Changed Destination Tag to Destination Element and Source Tag to Source

Element to reflect changes to the UI.

4 Rockwell Automation Publication 1756-PM012D-EN-P - November 2011

Summary of Changes

Notes:

Rockwell Automation Publication 1756-PM012D-EN-P - November 2011 5

Table of Contents

Summary of Changes

New and Updated Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table of Contents

Preface

Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 1

Controller Messages

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Supported Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Message Queue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Cache List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Unconnected Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Get or Set the Number of Unconnected Buffers. . . . . . . . . . . . . . . . . . . . . 13

Get the Number of Unconnected Buffers . . . . . . . . . . . . . . . . . . . . . . . 14

Set the Number of Unconnected Buffers . . . . . . . . . . . . . . . . . . . . . . . 14

Convert Between INTs and DINTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Chapter 2

Manage Multiple Messages

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Message Manager Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Initialize the Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Restart the Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Send the First Group of MSGs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Enable the Second Group of MSGs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Send the Second Group of MSGs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Enable the Next Group of MSGs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Send the Next Group of MSGs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Chapter 3

Send a Message to Multiple

Controllers

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Set Up the I/O Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Define Your Source and Destination Elements. . . . . . . . . . . . . . . . . . . . . . 24

Create the MESSAGE_ CONFIGURATION Data Type. . . . . . . . . . . 25

Create the Configuration Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Get the Size of the Local Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Load the Message Properties for a Controller . . . . . . . . . . . . . . . . . . . . . . . 29

Configure the Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Step to the Next Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Restart the Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Index

6 Rockwell Automation Publication 1756-PM012D-EN-P - November 2011

Table of Contents

Notes:

Rockwell Automation Publication 1756-PM012D-EN-P - November 2011 7

Preface

Purpose of This Manual

This manual shows how to program message (MSG) instructions to and from

Logix5000 controllers. This manual is one of a set of related manuals that show

common procedures for programming and operating Logix5000 controllers.

For a complete list of common procedures manuals, see the

Logix5000 Controllers Common Procedures Programming Manual, publication

1756-PM001.

The term Logix5000 controller refers to any controller that is based on the

Logix5000 operating system, such as:

•CompactLogix controllers.

•ControlLogix controllers.

•DriveLogix controllers.

•FlexLogix controllers.

•SoftLogix5800 controllers.

Additional Resources

These documents contain additional information concerning related products

from Rockwell Automation.

You can view or download publications at http://www.rockwellautomation.com/

literature/. To order paper copies of technical documentation, contact your local

Allen-Bradley distributor or Rockwell Automation sales representative.

Resource Description

Industrial Automation Wiring and Grounding Guidelines,

publication 1770-4.1

Provides general guidelines for installing a Rockwell

Automation industrial system.

Product Certifications website, http://www.ab.com Provides declarations of conformity, certificates, and

other certification details.

8 Rockwell Automation Publication 1756-PM012D-EN-P - November 2011

Preface

Notes:

Rockwell Automation Publication 1756-PM012D-EN-P - November 2011 9

Chapter 1

Controller Messages

Introduction

This section describes how to transfer data between controllers (send or receive

data) by executing a message (MSG) instruction. Cache connections and buffers

are explained so you can correctly program the controller.

Supported Data Types

The following data types are supported when sending CIP messages:

•SINT

•INT

•DINT

•LINT

•REAL

In addition, any structure type that is predefined, module-defined, or user-

defined can be used for sending a message.

See page 16 for more information on INTs and DINTs.

For complete details on programming a message instruction, see the Logix5000

Controllers General Instruction Reference Manual,

publication 1756-RM003.

EXAMPLE Execute a Message (MSG) Instruction

If count_send = 1 and count_msg.EN = 0 (MSG instruction is not already enabled), then execute a MSG instruction that sends data to another controller.

count_send

count_msg.en

Type - Unconfigured

Message Controlcount_msg ...

MSG

10 Rockwell Automation Publication 1756-PM012D-EN-P - November 2011

Chapter 1 Controller Messages

This diagram shows how the controller processes MSG instructions.

Message Queue

The message queue holds up to 48 MSG instructions, including those that you

configure as a block-transfer read or block-transfer write. When the queue is full,

an instruction tries to enter the queue on each subsequent scan of the instruction,

as shown below.

Description

The controller scans the MSG instruction and its rung-condition-in goes true. The message will pass to a throttle, which has 16 positions. If the throttle is full, the message

will stay enabled but is held until another controller scan.

The System-overhead time slice executes and the message is pulled from the throttle to the message queue.

If the MSG instruction Then the MSG instruction

Does not use a connection or the connection was not previously cached.

Uses a connection and the connection is cached

Uses an unconnected buffer to establish communication with the

destination device.

Does not use an unconnected buffer.

Communication occurs with the destination device.

Message Queue

Yes

Unconnected Outgoing

Buffers (10 to 40)

Destination Device

Cached?

total

1 2

Cache List

MSG

Throttle

Rung-condition-in false true false

.EN bit off on

.EW bit off on

1 2 3 4

Dieses Handbuch passt für folgende Modelle

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