Programming a PLC project

To create an application program that can run on the controller, fill POUs with declarations and implementation code (source code), link the I/Os of the controller to program variables, and configure a task assignment. After checking and debugging, the compiler creates the program code that can be loaded onto the controller.

Programming of the project blocks (POUs) is supported by the programming language editors and certain further functionalities such as pragmas and refactoring, and the application of ready-made function blocks from TwinCAT 3 PLC libraries.

Tools exist for syntax checking and code analysis, for creating data persistence and for encrypting the program code that is loaded onto the controller.

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