By default, is program documentation downloaded to the controller with the project?

By default, program documentation is indeed downloaded to the controller alongside the project. When you create a project in the Rockwell ControlLogix environment and compile it for download, the documentation that you have entered into the project, such as comments, descriptions, and other metadata, is included in the download. This integration ensures that the necessary contextual information about the programs and logic used in the controller is stored directly within the controller's memory, making it accessible during runtime or when performing maintenance.

This feature is particularly valuable for anyone who may need to troubleshoot or modify the program later, as the documentation serves as a reference that can aid in understanding the logic and operation of the system without needing to consult separate documentation files.