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However, smart control does not only simply mean high performance. This system is designed to take into consideration ease-of-use and reliability, in order to assist the operator in the field. This kind of system must also allow an operator to comprehend the operation of the whole plant at a glance, and it must operate 24 hours a day, 365 days a year in a constant state of action even if any emergency occurs. Furthermore, the system must also provide easy renewal according to production status, such as expansion, additions, and maintenance. Since the supervisory control system must execute such complicated and advanced functions, it also requires smart operations, reliability, and easy maintainability. Thus, the HIACS-AZ series, integrated supervisory control system, has been developed with such thoughts in mind. Hitachi made the most of the experience and results that it had gained through the development of social infrastructure systems and large-scale plant controls, and has thus achieved smart supervisory control/information processing that can be used by customers in a wider variety of fields. Hitachi is now providing integrated supervisory control solutions that can enable efficient and optimum production at chemical, food, medicine, and cosmetic manufacturing facilities.