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Supervisory Control And Data Acquisition System (SCADA)


SCADA stands for Supervisory Control and Data Acquisition System. It is not a full control system, but rather focuses supervisory level. It is a software package which is positioned on top of the hardware to which it is interfaced, in general via Programmable logic controller (PLC) or other hardware control module.


It is a system used to electronically monitor (including the ability to trend data and generate regulatory reports) and control remote operations from a central point. For example, SCADA can be used to control and monitor the status of a remote pumping facility from a water or wastewater facility. A SCADA system consists of five major components: master computer, software, communication link, remote terminal and input/output devices. The key component is the communication link that can be dial up telephone, cellular telephone or radio frequency. Additional equipment is chosen based on compatibility with the communication link.


SCADA systems are not used only in industrial processes but also in some experimental processes such as nuclear fission

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               Last modified: 07/26/05