Compile the Project

After creating all the elements of your project, you are ready to compile it. The project must be compiled before it is simulated or downloaded to the target.


  • Each time the project is changed, recompile and download the new version to save the changes on the target.

Use the Compile button () on the toolbar (Ctrl+B shortcut) to compile the project.

The compiler reports messages in the Information and Logs toolbox.

See the Compiler Output tab tab.

No other actions are possible when the compilation is in progress.

Compiler Output


  • Errors are easily located using the information and logs window as shown below.

Double-click on an error in the list to open the program and jump directly to the relevant location in the editor.

Error Location when Compiling

To locate source code, you can also use the Find and replace feature (for more information, refer to Find and Replace tab)


  • In FFLD, when a function, function block or UDFB is not connected on the left, then it is ignored (removed at compiling time).
    This case only applies for functions - not for function blocks.