Rockwell Automation 1756 ControlLogix, 1756 GuardLogix, 1769 CompactLogix, 1769 Compact GuardLogix, 1789 SoftLogix Original Instructions
...
Programming Manual
Logix 5000 Controllers Messages
1756 ControlLogix, 1756 GuardLogix, 1769 CompactLogix,
1769 Compact GuardLogix, 1789 SoftLogix, 5069
CompactLogix, 5069 Compact GuardLogix, Studio 5000
Logix Emulate
Original Instructions
Logix 5000 Controllers Messages
personal injury or death, property damage, or economic loss.
Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.
IMPORTANT
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.
temperatures.
for Personal Protective Equipment (PPE).
Important User Information
Read this document and the documents listed in the additional resources section about installation, configuration, and
operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize
themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.
Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to
be carried out by suitably trained personnel in accordance with applicable code of practice.
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
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.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss.
Identifies information that is critical for successful application and understanding of the product.
Labels may also be on or inside the equipment to provide specific precautions.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous
ARC FLASH HAZARD:
will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL Regulatory requirements for safe work practices and
Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential Arc Flash. Arc Flash
2 Rockwell Automation Publication 1756-PM012I-EN-P - September 2020
Change
Topic
Updated branding.
Throughout
Change
Topic
of 1.1 KB.
on page 13
Summary of changes
This manual includes new and updated information. Use these reference
tables to locate changed information.
Grammatical and editorial style changes are not included in this summary.
Global changes
This table identifies changes that apply to all information about a subject in
the manual and the reason for the change. For example, the addition of new
supported hardware, a software design change, or additional reference
material would result in changes to all of the topics that deal with that subject.
New or enhanced features
This table contains a list of topics changed in this version, the reason for the
change, and a link to the topic that contains the changed information.
Updated Legal notices. Legal notices on page 8
Each unconnected buffers uses 1.2 KB of memory instead
Get or Set the Number of Unconnected Buffers
Rockwell Automation Publication 1756-PM012I-EN-P - September 2020 3
Summary of changes
Controller messages
Manage multiple messages
Send a message to
multiple controllers
Index
Table of Contents
Preface
Studio 5000 environment .......................................................................... 7
Additional resources ................................................................................... 7
Legal notices ................................................................................................ 8
Chapter 1
Introduction to Controller Messages ........................................................ 9
Supported data types .................................................................................. 9
Message Queue ...........................................................................................10
Cache list .....................................................................................................10
Unconnected buffers .................................................................................. 12
Guidelines ................................................................................................... 12
Get or set the number of unconnected buffers ........................................ 13
Get the number of unconnected buffers ............................................ 13
Set the number of unconnected buffers ............................................. 13
Convert between INTs and DINTs ............................................................ 15
Chapter 2
Introduction ............................................................................................... 17
Message manager logic ............................................................................. 17
Chapter 3
Introduction ............................................................................................... 21
Configure the I/O configuration .............................................................. 21
Define your source and destination elements ........................................ 22
Create the MESSAGE_ CONFIGURATION data type ............................ 22
Create the configuration array ..................................................................23
Get the size of the local array .................................................................... 24
Load the message properties for a controller .......................................... 25
Configure the message ............................................................................. 25
Step to the next controller ........................................................................ 26
Restart the sequence ................................................................................. 26
Rockwell Automation Publication 1756-PM012I-EN-P - September 2020 5
Resource
Description
at http://ab.rockwellautomation.com
and other certification details.
Studio 5000 environment
Additional resources
Preface
This manual shows how to program message (MSG) instructions to and from
Logix 5000™ controllers. This manual is one of a set of related manuals that
show common procedures for programming and operating Logix 5000
controllers.
For a complete list of common procedures manuals, refer to the
Logix 5000
Controllers Common Procedures Programming Manual, publication 1756-
PM001.
The term Logix 5000 controller refers to any controller based on the Logix
5000 operating system.
The Studio 5000 Automation Engineering & Design Environment® combines
engineering and design elements into a common environment. The first
element is the Studio 5000 Logix Designer® application. The Logix Designer
application is the rebranding of RSLogix 5000® software and will continue to
be the product to program Logix 5000™ controllers for discrete, process,
batch, motion, safety, and drive-based solutions.
Rockwell Automation Publication 1756-PM012I-EN-P - September 2020 7
The Studio 5000® environment is the foundation for the future of
Rockwell Automation® engineering design tools and capabilities. The Studio
5000 environment is the one place for design engineers to develop all
elements of their control system.
These documents contain additional information concerning related
Rockwell Automation products.
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
Product Certifications webpage, available
Provides general guidelines for installing a Rockwell
Automation industrial system.
Provides declarations of conformity, certificates,
View or download publications at
http://www.rockwellautomation.com/literature
. To order paper copies of
Preface
Legal notices
technical documentation, contact the local Rockwell Automation distributor
or sales representative.
Rockwell Automation publishes legal notices, such as privacy policies, license
agreements, trademark disclosures, and other terms and conditions on the
Legal Notices
page of the Rockwell Automation website.
End User License Agreement (EULA)
You can view the Rockwell Automation End User License Agreement (EULA)
by opening the license.rtf file located in your product's install folder on your
hard drive.
The default location of this file is:
C:\Program Files (x86)\Common Files\Rockwell\license.rtf.
Open Source Software Licenses
The software included in this product contains copyrighted software that is
licensed under one or more open source licenses.
You can view a full list of all open source software used in this product and
their corresponding licenses by opening the oss_license.txt file located your
product's OPENSOURCE folder on your hard drive. This file is divided into
these sections:
• Components
Includes the name of the open source component, its version number,
and the type of license.
• Copyright Text
Includes the name of the open source component, its version number,
and the copyright declaration.
• Licenses
Includes the name of the license, the list of open source components
citing the license, and the terms of the license.
The default location of this file is:
C:\Program Files (x86)\Common Files\Rockwell\Help\<product
name>\Release Notes\OPENSOURCE\oss_licenses.txt.
8 Rockwell Automation Publication 1756-PM012I-EN-P - September 2020
You may obtain Corresponding Source code for open source packages
included in this product from their respective project web site(s).
Alternatively, you may obtain complete Corresponding Source code by
contacting Rockwell Automation via the Contact form on the Rockwell
Automation website:
http://www.rockwellautomation.com/global/aboutus/contact/contact.page. Please include "Open Source" as part of the request
text.
Example:
then execute a MSG instruction that sends data to another controller.
Description
Introduction to
Controller Messages
Supported data types
Chapter 1
Controller messages
This section describes how to transfer (send or receive) data between
controllers by executing a message (MSG) instruction. It explains cache
connections and buffers so you can correctly program the controller.
The following data types are supported when sending CIP messages.
• SINT
• INT
• DINT
• LINT
• REAL
In addition, you can send a message with any structure type that is
predefined, module-defined, or user-defined.
For more information, see "Convert between INTs and DINTs on page 15
".
For complete details on programming a message instruction, see the LOGIX
5000 Controllers General Instruction Reference Manual, publication 1756-
RM003.
Execute a message (MSG) instruction
If count_send = 1
and count_msg.EN = 0 (MSG instruction is not enabled)
This diagram shows how the controller processes MSG instructions.
Rockwell Automation Publication 1756-PM012I-EN-P - September 2020 9
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