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

Sequences – best practices

Sequences in PLC control are extremely common and are used for many different application types and use cases. Controlling sequences correctly, efficiently, and retaining an easy method by which they can be modified is important.

There are many ways to control a sequence, from custom-built sequence management logic to using the GRAPH language. Sequences are inherently application-specific, but their management does not have to be and can be standardized to some degree.

Note

TIA Portal's GRAPH has a pre-built method to create advanced sequences. However, in many circumstances, GRAPH may not be suitable or desired, especially for sequences that interact with other proprietary code. GRAPH is flexible enough to be programmed to do what needs to be done, but it comes with additional functions that may not be desired.

Using constants instead of numerical values

It's very common to see sequences that use numerical values to manage...