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AB-Message指令详细说明 评分

罗克韦尔Message指令详细说明,用于多个PLC之间的相互通信。
Summary of changes This manual contains new and updated information. The following table contains the changes made to this revision Change Topic Updated supported controller models Cover Rockwell automation Publication 1756-PM012G-EN-P-June 2016 Table of contents Preface Studio 5000 environment Additional resources Chapter 1 Controller messages Introduction to Controller Messages Supported data types Message Queue 10 Cache list……11 Unconnected buffers 12 guidelin Get or set the number of unconnected buffers...............13 Get the number of unconnected buffers Set the number of unconnected buffers ,.........................14 Convert between ints and dⅠNTs… 16 Chapter 2 Manage multiple messages Introduction essage manager logIc… 19 Chapter 3 Send a message to multiple Introduction…… 23 ontrollers Configure the I/O configuration……23 Define your source and destination Create the message Configuration data type..25 Create the configuration array 25 Get the size of the local array...............27 oad the message properties for a controller………… 28 Configure the message ........28 Step to the next controller..…….……29 Restart the sequence…… 29 Index Rockwell automation Publication 1756-PM012G-EN-P-June 2016 reface 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, refer to the Logix5000 Controllers Common Procedures Programming Manual, publication 1756-PM001 The term Logix5000 controler refers to any controller that is based on the Logix5000 operating system. Studio 5000 environment The Studio 5000 Automation Engineering& Design Environment"combines engincering and design clements into a common environment. The first clement 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 Logix5000"controllers for discrctc, proccss, batch, motion, safcty, and rive-based solutions Rockwell Software Studio 5000 Create pen Explore From Import From sample Project From Orcad Abou Recent Projects 6B SampleOnEve 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 Rockwell automation Publication 1756-PM012G-EN-P-June 2016 Additional resources These documents contain additional information concerning related rockwell Automation products Resource Description Industrial Automation Wiring and Grounding Guidelines, Provides general guidelines for installing a Rockwell blication 1770-4 1 Automation industrial system. Product Certifications webpage, available at Provides declarations of conformity, certificates, and other http://ab.rockwellautomation.com certification details You can view or download publications at http://www.rockwellautomation.com/literature.Toorderpapercopiesof technical documentation, contact your local Rockwell Automation distributor or es representative. 8 Rockwell automation Publication 1756-PM012G-EN-P-June 2016 Chapter 1 Controller messages Introduction to controller This section describes how to transfer(send or receive data between controllers by executing a message (MSG)instruction. It explains cache connections and Messages utters 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 n 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 16 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 and count_msg EN=0(MSG instruction is not enabled) then execute a msg instruction that sends data to another controller oount send count mag. an Type-Unccnfigured Message Cantrolcount_ msg DN Rockwell automation Publication 1756-PM012G-EN-P-June 2016 Chapter 1 Controller messages This diagram shows how the controller processes MSg instructions Message Queue Cache li Unconnected Outgoing Buffers (10 to 40 throttle Yes Description o he contrller scans the MSG instruction and its rung-condition-in goes true. The message passe to a throttle that has 16 positio,s. If th throtte i ful, the message 2 The System-overhead time slice executes and the message is pulled from the throttle to the message queue Ifthe msg instruction Then the msg instruction Does not use a connection or the connection was not previously cached Uses an unconnected buffer to establish communication with the destination device Uses a connection and the connection is cached Does not use an unconnected buffer Communication occurs with the destination device Message Queue The mcssagc qucuc holds up to 48 MSG instructions, including thosc 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 in the following illustration Rang- oonditicn-infabt k IN bit Rockwell automation publication 1756-PM012G-EN-P-June 2016

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