Global variable

How to a transmitter as global variable? And how to invert an existing local variable into a global variable?

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aahmedhafezz Rank: 3538

Asked 2 years ago

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If you want to communicate between two diagrams, then you shall declare the local variable as IAC ( Communication Variable) in both diagrams.

Source as out IAC and sink as in IAC. then values will be passed between two diagrams.

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Vinoth Sankar Rank: 130

Answered 2 years ago

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For converting an existing Local variable into a Global variable, move the Local variable from Variables tab to External Variables tab in the POU. Then copy this External Variable to Global Variables tab in the Application level.

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