PLC programming using TwinCAT 3 tutorial – part 5

Dear existing & future PLC software developers, I have published the 5th part of my free PLC programming using TwinCAT 3 tutorial.

Arrays allow us to define types of variables that can hold several data items of the same kind. In this part of the tutorial we will look at a data unit type that allows us to hold several data items of different kind. We will also look at one of the basis of modularization and re-use in software development called functions. We will look at how we can get data in and out of functions, and we will also look at the difference between passing parameters by value and by reference. We will finish this part by writing our very first function!

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