The many faces of SCADA

摘要

Today's state-of-the-art SCADA is not your granddad's supervisory control and data acquisition system. It's not even the one you may have cut your teeth on as a new process engineer back in the day. The monolithic master station running proprietary supervisory applications is long gone. So is communication via inflexible, single-purpose, analog remote terminal units (RTUs) over often-tenuous, low-bandwidth radio or telephone system-based links.