Chapter 2: Creating Objects and How They Fit Together
This chapter explains how, when creating objects, programmers should be mindful of how the hierarchy in TIA Portal operates. It helps programmers understand how to create a project's structure, how programming objects work with each other, how different instances of data in different spaces affect the project, and how interfaces that contain objects work.
We will cover the following topics in this chapter:
- Creating a project's structure
- Hierarchy in TIA Portal
- Instance and global data
- Interfaces and the effects of running PLCs
Creating a project's structure
When a new project is started, there's usually a good idea of the direction the project will take, such as whether control elements ...
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