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You're reading from  PLC and HMI Development with Siemens TIA Portal

Product typeBook
Published inApr 2022
PublisherPackt
ISBN-139781801817226
Edition1st Edition
Concepts
Embedded Systems
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Author (1)
Liam Bee
Liam Bee
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Liam Bee

Liam Bee has worked in automation for over 16 years, after starting his career at 16 years old as an instrument technician in the water industry. He began his automation journey by maintaining PLCs and the instruments connected to them. He found very early on that he had an interest in PLCs and automation, taking the time to learn PLC programming in his own time, as well as exposing himself as much as possible to automation while working. After 8 years of working in maintenance, Liam started his own side business, providing bespoke controls using lower-range PLC solutions. This experience proved invaluable to his progression; he learned quickly, often through failure, and his knowledge of control design improved significantly. 12 years into his career, he moved roles again; this time, he was looking for something to fill knowledge gaps and target Siemens as he was yet to use Siemens extensively. Liam started at Aquabio Ltd and quickly found himself immersed in Siemens SIMATIC Manager and TIA Portal. Over the next 3 years, he worked hard to understand Siemens' tools and development environments, calling on knowledge from other PLC environments that he had previously worked with. Over his years working with automation, he has learned many different languages and development environments. He has worked with Siemens, Allen Bradley, Schneider, Mitsubishi, and a host of other PLC platforms, all of which have helped shape the design concepts that he uses today. Liam has also taught himself computer programming languages such as VBA, VBS, VB.NET, C#, Java, and more. Closing the space between IT and industrial automation is important as time moves forwards and he has always tried his hardest to be at the forefront of innovation.
Read more about Liam Bee

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Considerations

Managing downloads can become more difficult the larger projects become, especially if the process that the PLC is controlling is also critical and PLC downtime is to be kept to a minimum.

Data segregation

A good method of reducing the effect of reinitialization and the chance of it needing to set the data in your project to the starting values is to segregate data into more than one data block:

Figure 13.26 – An example of segregating data

By grouping data into singular data blocks, where the data has something in common with the data it is grouped with, reinitialization only affects data that is grouped together.

Figure 13.26 shows an example of mixed data in DB1 on the left-hand side. If a variable was added, removed, or modified in this data block, the entire data block would be reinitialized. Then, groups of unrelated data would be set to the starting values.

By splitting the relative data into three data blocks, only...

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PLC and HMI Development with Siemens TIA Portal
Published in: Apr 2022Publisher: PacktISBN-13: 9781801817226
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Liam Bee

Liam Bee has worked in automation for over 16 years, after starting his career at 16 years old as an instrument technician in the water industry. He began his automation journey by maintaining PLCs and the instruments connected to them. He found very early on that he had an interest in PLCs and automation, taking the time to learn PLC programming in his own time, as well as exposing himself as much as possible to automation while working. After 8 years of working in maintenance, Liam started his own side business, providing bespoke controls using lower-range PLC solutions. This experience proved invaluable to his progression; he learned quickly, often through failure, and his knowledge of control design improved significantly. 12 years into his career, he moved roles again; this time, he was looking for something to fill knowledge gaps and target Siemens as he was yet to use Siemens extensively. Liam started at Aquabio Ltd and quickly found himself immersed in Siemens SIMATIC Manager and TIA Portal. Over the next 3 years, he worked hard to understand Siemens' tools and development environments, calling on knowledge from other PLC environments that he had previously worked with. Over his years working with automation, he has learned many different languages and development environments. He has worked with Siemens, Allen Bradley, Schneider, Mitsubishi, and a host of other PLC platforms, all of which have helped shape the design concepts that he uses today. Liam has also taught himself computer programming languages such as VBA, VBS, VB.NET, C#, Java, and more. Closing the space between IT and industrial automation is important as time moves forwards and he has always tried his hardest to be at the forefront of innovation.
Read more about Liam Bee

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