This object is available only for specific controllers. It is displayed automatically in the device tree. The object cannot be added or removed manually. The object can be used for mapping the executable code of an application in different code areas on the controller. Specifically small controllers often have limited internal code areas (flash memory). If one or more additional code areas (for example, external flash memory) are available on the controller, then the location of the code POUs of an application can be changed specifically.

If there are no specific requirements, then the code POUs are stored sequentially in the code areas (“default”). This means that the next code POUs are stored in the next areas only when the first code area is filled. In the “POU Locations” editor, you will see the current location of the POUs in the memory areas and you can change them specifically.

Editor 'POU Locations'

Double-clicking the “POU Locations” object in the device tree of the controller opens the editor. Then it receives the entry “<application>”. After a code generation, all program blocks of the application are displayed with the respective object type, current location in the memory, and code size.

In the “Configured Location” column, you can set one of the memory areas other than the “Current Location” for each POU or library.

In order to move the POUs to the recently configured memory locations, you first have to “Clean” and then “Generate Code” again.