Book Image

PLC and HMI Development with Siemens TIA Portal

By : Liam Bee
Book Image

PLC and HMI Development with Siemens TIA Portal

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)
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

Languages used in TIA Portal

This section covers five of the languages available in TIA Portal and demonstrates their usage against the control scenario.

Ladder logic

LAD is the most popular language in the PLC control space. It's likely that programmers of PLCs have never seen or used LAD. Although it's still extremely popular, other languages such as SCL are also becoming very popular.

Overview

Ladder gets its name from the way that the logic flows from the left of a network to the right of a network. When multiple networks are placed in series, a ladder is formed.

Ladder, like other languages that are programmed in networks, is processed as follows:

  • Networks
    • Top to bottom
  • Logic inside networks
    • Left to right.
    • Top to bottom.
    • Conditions that come to a common point (the closing of a branch) will evaluate all conditions left of the common point before proceeding.
    • Outputs/instructions that are on open branches will be processed top to bottom from the point...