What is important to do if you want your code to run on the PLC,
and in which block must it be placed?

Question

What is important to do if you want your code to run on the PLC,
     and in which block must it be placed?

Answer

The code must be inside a Data Block (DB)

Answer

The code must be placed
in OB1 or be called from OB1

Answer

The code must be stored in a Function Block (FB), and that’s
      enough

Answer

The code should be
written in a Watch Table

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