ANSI/ISA-5.1

ANSI/ISA-5.1 is a standard that defines the symbols, terminology, and procedures used for naming and documenting control systems in industrial automation. It provides a consistent language for engineers and technicians to design, analyze, and maintain electrical and control systems, such as those used in manufacturing plants. By standardizing how control equipment and signals are represented and labeled, it helps ensure clear communication, reduce errors, and facilitate troubleshooting across teams and projects. Essentially, it acts as a common reference guide for creating clear, organized, and understandable control system documentation.