Using DUTs in a POU header

Open POU header from Project pane
Enter a new line if necessary
Under Class, select VAR
Under Identifier, enter a symbolic name
Under Type, select to open the Type selection dialog
Under Type class, select Data unit types
Under Type, select the desired DUT
OK
Under Initial, select to open the Set initial values dialog
This dialog shows how the individual variables have been defined in the DUT. You can only change the initial values for one single variable (not for the DUT).
Change initial value for the desired variable, if necessary
OK
Under Comment, enter a text, if desired
Object > Save

Now the DUT or a single variable of the DUT can be used in the POU body. The DUT can be assigned with the help of the Variables pane.

NOTE

A DUT defined in the global variable list can be used in a POU body only when copied into the header of the corresponding POU beforehand.