Variable Initial Value

A variable can have an initial value.

• The value must have valid Constant Expressions that fits to the Data Types of the variable.
• The initial value is displayed in red if it is not a valid expression for the selected data type.
• There is no initial value for arrays and instances of function blocks.
• Change the initial value of a variable using the Variables tab.

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• A retain variable's value may be assigned to the variable's initial value.
  See Copy a Retained Variable Value to Init Value for more information.