What do structured text and function block diagrams have in common?

Structured text and function block diagrams are both programming languages supported by ControlLogix systems, which classifies them as languages within the IEC 61131-3 standard for industrial automation programming. Structured text is a high-level language similar to Pascal, allowing for complex algorithms and calculations, which makes it ideal for tasks requiring mathematical or logical operations. Function block diagrams, on the other hand, provide a visual representation of functions and processes that can be connected with lines, making it easier to understand and visualize the workflow of control logic.

The significance of this shared status as languages in ControlLogix systems lies in their capability to support various programming approaches for users. They cater to different preferences and project needs, allowing programmers to choose the most effective way to design and implement control strategies. This flexibility enhances productivity and efficiency in programming tasks.

The other options do not accurately reflect the commonality between structured text and function block diagrams. For instance, while the use of external libraries may occur, it is not a fundamental characteristic shared by both languages. Furthermore, one is not strictly visual in the same way that function block diagrams are, as structured text is inherently text-based. Finally, the statement about being used exclusively for data logging is inaccurate; both languages can be utilized for a