Right-click the Application tree to add POUs (Program Organization Units), Task Configurations, or Global Variable Lists (GVL).

Detailed guides on the five IEC languages: Ladder (LD), Structured Text (ST), Function Block Diagram (FBD), Instruction List (IL), and Sequential Function Chart (SFC), plus the Continuous Function Chart (CFC). Visualization:

When searching for the , note that “3.5” is the base version, but Service Packs (SP) exist: 3.5 SP20, SP19, SP18, etc. Each service pack introduces new features and changes to the IDE. Always download the manual that matches your installed service pack version. You can check your version via Help > About CODESYS .