The standard provides regulations and gives recommendations for the representation of alarms/messages and for the operation of alarm systems. The application of these recommendations helps produce displays and controls based on ergonomic findings which are compatible with those for mimics and preformatted displays and which comply with applicable standards. Consequent application of the standard helps to create uniform human-machine interfaces at different workplaces. This standard is valid for the representation of alarms/messages which are used in process control during normal (production) operation or for diagnosis of disturbances in automated systems. It applies to automated systems for chemical and petrochemical process technology, steam generation and process systems in the iron and steel industry, provided there are no specific regulations to be observed for these plants and systems.