Compile the code, download it to the controller, and press Start. Where to Find Official PDF Documentation

Are you trying to (like EtherCAT)?

CODESYS supports all major industrial protocols without requiring third-party drivers: PROFINET EtherNet/IP CANopen Modbus TCP/RTU Setting Up Your First Project

Use the "Communication Settings" tab to find your PLC on the network.

A CODESYS-specific graphical language offering more flexibility than FBD. Key Features of Version 3.5 Object-Oriented Programming (OOP)