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PLC and HMI Development with Siemens TIA Portal

PLC and HMI Development with Siemens TIA Portal

By : Liam Bee
4.6 (18)
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PLC and HMI Development with Siemens TIA Portal

PLC and HMI Development with Siemens TIA Portal

4.6 (18)
By: Liam Bee

Overview of this book

With automation requirements on the rise, Siemens’ TIA Portal development environment is almost a necessity for any automation engineer. The Totally Integrated Automation (TIA) environment helps seamlessly integrate all things automation, from PLC hardware and software design to HMI development. This book helps you understand the tools available in the TIA toolbox and shows you how to write code effectively. The book begins by introducing you to the TIA environment, covering the layout and tools available. Once you’ve got to grips with the environment, you’ll find out how to create hardware to write programs against, including adding IO modules and assigning memory for input and output. Next, you'll develop logic in all of the languages that TIA Portal offers, such as Ladder, Function Block Diagram, and Structured Text (SCL) (note that Statement List is not covered as a deprecated language), as well as the newest language, Cause and Effect (CEM). You’ll also discover how to store standard code in libraries, creating a version control system that is easy to manage and aids standard design. Finally, following the PLC design chapters, you’ll learn how to develop HMI applications in TIA Portal’s latest unified hardware. By the end of the book, you'll be well equipped to use all of the features that TIA Portal V17 offers.
Table of Contents (21 chapters)
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1
Section 1 – The TIA Portal – Project Environment
5
Section 2 – TIA Portal – Languages, Structures, and Configurations
11
Section 3 – TIA Portal – HMI Development
16
Section 4 – TIA Portal – Deployment and Best Practices

Instance and global data

As with most PLCs, TIA Portal has two types of data – global and instance. What defines the data as a particular type is where and how it is used. What is classed as global or instance data depends on what information is being held and how it interacts or interfaces with logic:

  • Global data:
    • Data that can be accessed anywhere in the project, at any hierarchy level.
    • Data can be freely defined by the programmer, including the creation of sub-structures that contain data or UDT definitions.
    • It cannot hold instance data for a function block, even in a sub-structure.
  • Instance data:
    • Data that exists explicitly to be used with a function block or UDT.
    • Data is automatically defined by the requirements of the function block/UDT it is associated with.
    • It will contain any sub-instances of function blocks that have been called within the parent function block.

      Note

      There is an additional global data block type called Array DB. This allows a data block to be explicitly...

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