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SCADA System Size And Functionality

To the uninitiated, SCADA may seem like just another chunk of consonants and vowels floating around in the alphabet soup of today’s culture. But a SCADA system is, in reality, an extremely important application of computer technology that has created huge gains in productivity and efficiency in the processing industries.

SCADA systems in wastewater treatment plants
SCADA systems in wastewater treatment plants (photo credit:

A SCADA system is an assemblage of computer and communications equipment designed to work together for the purpose of controlling a commercial process.

SCADA is usually implemented on manufacturing processes, (chemical and pharmaceutical processing, food processing, and discrete manufacturing), treatment processes, (wastewater treatment, municipal water treatment systems), and distribution systems, (gas, oil and water pipelines).

Besides control, SCADA systems also perform monitoring, data logging, alarming and diagnostic functions so that large, complicated process systems can be operated in a safe manner and maintained by a relatively small staff.

Generalized SCADA System Architecture

Generalized SCADA System Architecture
Generalized SCADA System Architecture

A SCADA System’s components are comprised of:

  • One or more CPU’s (Central Processing Units),
  • RTU’s (Radio Telemetry or Remote Terminal Units),
  • I/O Subsystems,
  • Video monitors,
  • Field Sensors,
  • Control Devices and
  • Lots of software that drives the I/O, runs the control algorithms, generates control outputs, displays graphics and monitored values, senses alarm statuses, and stores the monitored points in a series of data files that can be archived and recalled at a later time for analysis or process verification.
Title:SCADA Systems In Wastewater Treatment – Stephan J. Sosik, CEO of Process-Logic, LLC
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SCADA Systems In Wastewater Treatment Cover
SCADA Systems In Wastewater Treatment Cover

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  1. Hashem Masharika
    Nov 09, 2019

    Thanks for the article but to be frank the I expected to find more detailed information.

  2. sandip
    Jul 07, 2015

    How can download win cc software (scada).

  3. Dragos Pascale
    Aug 19, 2013

    What about wastewater treatment ? I don’t see any reference to this subject except the title.

    • Edvard
      Aug 19, 2013

      This is an abstract from paper available for download.

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