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

Differences between Siemens and other PLCs

Languages in Siemens closely relate to those of other major platforms. Ladder, FBD, SCL (or ST in most other environments), and STL are all ultimately the same. The other languages are either unique to Siemens or have noticeable variations compared to other environments. Despite the most common languages being the same for the most part, there are a few things to watch out for that are subtle and not immediately obvious.

Timers

In TIA Portal, when an IEC timer is used (TON, for example), everything appears normal compared to other IEC environments.

Figure 4.16 – TON timer in TIA Portal

However, if the PT value is changed while the IN input is True, Timer does not respond to the change until the IN input has become False and then True again. This is not immediately obvious and is not the expected behavior compared to other environments.

TIA Portal has a solution to this, which is to place a PT Coil before...