61131-3 standard. You declare [...] where the variables are declared

variable is not declared [...] Declare an input

declaration keyword [...] the declaration: Inputs

above the declaration of a single [...] above the declaration part of a POU

. If you have declared a [...] are declared as a string [...] property. Declaration

in the declaration [...] All declarations are declared [...] the declarations as needed

in the variables declaration [...] in the declaration part

. You declare these variables [...] does not require you to declare

in the declaration part ( Variable Declaration Editor

of the declaration part [...] above the declaration