What are tags in ControlLogix programming?

Tags in ControlLogix programming serve as data elements within the program that are used to store and manage values. They act as named references to memory locations, allowing for easier identification and manipulation of data throughout the program. This capability is essential for both structured programming and organizing complex systems, as tags can represent various data types, including integers, floating-point numbers, booleans, and even user-defined types.

Using tags enables efficient data handling and helps improve code readability. When programmers assign meaningful names to these tags, they enhance maintainability and make it easier for others (or even themselves at a later time) to understand the program's logic and flow.

In contrast, predefined functions, hardware configurations, and error logs, while important in control systems, do not serve the purpose of storing values in the way that tags do. Predefined functions pertain to operations that can be executed within the program, hardware configurations involve setting up physical devices, and error logs are generated records detailing the operational issues or faults that occur during execution.