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Scada (Supervisory Control and Data Acquisition)

SCADA programs are used in industrial process control applications for centralised monitoring and recording of pumps, tank levels, switches, temperatures etc. SCADA systems are also referred to as HMI (Human Machine Interfaces), or the less politically correct MMI (Man Machine Interfaces).


A SCADA program normally runs on a PC and communicates with external instrumentation and control devices. Communications methods can be via direct serial link, radio, modem, fieldbus or Ethernet links. If a mixture of instruments with differing communication interfaces and protocols need to be connected, then converters can be used. SCADA is often used on remote data acquisition systems where the data is viewed and recorded centrally.
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