SCADA (supervisory control and data acquisition) is a category of software application program for process control, the gathering of data in real time from remote locations in order to control equipment and conditions. SCADA is used in power plants as well as in oil and gas refining, telecommunications, transportation, and water and waste control.
SCADA systems include hardware and software components. The hardware gathers and feeds data into a computer that has SCADA software installed. The computer then processes this data and presents it in a timely manner. SCADA also records and logs all events into a file stored on a hard disk or sends them to a printer. SCADA applications warn when conditions become hazardous by sounding alarms.
A SCADA system incorporates the HMI but has the added capability to share plant floor information with the “top floor” of your company. That means that folks in purchasing can get information about raw material shortages so that they can place orders before you run out. Accounting can track defect costs in real time. And most importantly, the CEO can have visibility into overall productivity so that he/she has fewer questions about what is going on in the plant.
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