Good to Know

Quick declaration of variables with standard data types
To quickly create BOOL variables, use [Variable Name] <Ctrl> + <Enter> in the declaration part of the program editors.
Visualization styles
In case you want to be able to quickly and easily switch the look and feel of a visualization to quite different requirements, use visualization styles.
F4 Key

If the project cannot be translated due to syntactic errors or if there are other messages in the message window, you can systematically process the list of messages by pressing F4. CODESYS immediately jumps to the place in the source code belonging to the message.

Online Config Mode CODESYS
Online Config Mode
With the Online Config Mode you can test the wiring and function of configured I/Os or drives before having written a real application. Right-click on the device tree and select "Online Config Mode".