PLC programming using TwinCAT 3 - Function blocks & interfaces (Part 6a/18) 

In this part we will start to look into the object oriented programming parts of structured text and IEC 61131-3 called function blocks. For those that are Java, C, C++ or just “traditional” programmers, going into the realm of function blocks is like going from C-style structures and functions, and into classes in C++. With function blocks we can go from working in a procedural style programming into objected oriented style programming. In this part we will create our very first function block and add a few methods to it.
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Intro 0:00
Scope 0:15
POP and OOP 1:55
Objects 3:01
Function blocks 6:22
Inheritance 12:13
Example program 18:18
Access specifiers 27:07
Example program cont'd 28:24
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