An Overview Of the SCADA System

SCADA system refers to the Supervisory Control and Data Acquisition system. 

It contains a network of all the equipment and machinery connected with a centralized focal point. The central point acquires all the data from the website.

It gives information, including process status, the machine’s health, machine status, others, etc.

What is SCADA?

It is an industrial computer-based system unit used to control and acquire the system and keep track of real-time data. It further controls and monitors the equipment at the industrial level.

You can use it in different types of industries and various domains. The SCADA is a combination of hardware and software protocols.

Purpose of the SCADA

The purpose of the SCADA systems is to following

  • It can control processes and collect data from a distance.
  • It also can log on to the current system and past ones.
  • It can send the necessary information to the operators by SMS and the internet.
  • Using the SCADA system reduces human resources needs.
  • It can save energy, money, and time.
  • SCADA is a reliable system.
  • It controls the system with supervision.

Functions of SCADA

SCADA performs many functions, but the four are the primary function of this system.

Acquisition of Data

The data collected by the SCADA involves some analog and digital conversations. For example, it can convert temperature into the degree Celcius and transmitter signal strength into the dBm.

Network data Communication

  • It transmits the collected data. 
  • The communication channel may be analog or digital. 
  • This network also includes some transport validation. 


SCADA can control the warranted decision, and the system supports the output. PLCs and RTUs perform most of the control actions.

Presentation of Data

Collected data is organized, processed, and presented to the system operator to make appropriate control of the decision. The presentation varies from time to time. It may present in the tabular form, graphical, or mapping.

Types of the SCADA System

There are the following four types of the SCADA system.

First Generation 

The Early SCADA system started in 1950 and ended in 1970.

Second Generation

The 2nd generation of SCADA was called the Distributed SCADA and SIS Services, which started in 1980 and ended in 1990.

Third Generation

This generation is called the Networked SCADA system, which started in 1990 and ended in 2000. 

Fourth Generation

This generation is called the internet of things technology. The SCADA system started in 2000.

Components of SCADA

Generally, the SCDA system includes the following components.


Inputs that are either digital or analog and output rely on their direction with the managed elements in a remote site. Here the SCADA function starts. These sensor systems perform the data acquisition, but they can not control the interrupted communications.

But still, your SCADA system needs to collect data and report in a meaningful way. Here RTU work has started.

Remote Telemetry Units (RTUs)

The small computerized units deploy RTUs in different sites and locations. RTU is known as the remote terminal unit, and it serves as a local collection point.

Human Machine Interface(HMI)

It is software that processes the data and allows the users to operate, manage and control the system. HMI provides the human operators who gather the information from RTUs. The master unit interfaces display this information.

The best HMI SCADA software will present the data in graphical representation based on maps.

Communication Network

It is a network that shows what connects telemetry and SCADA at your remote site. Nowadays, the most common communication technology is Ethernet.

Who uses the SCADA?

The different industries and companies use the SCADA system. Different public and private sectors use the SCADA system to maintain, control the efficiency, distribute the data, and make smart decisions.

SCADA systems work in different enterprises very well because they range from simple configurations to large and complex installations.

SCADA is a backbone of many industries, some of the following.

  • Energy    
  • Oil and Gas
  • Power
  • Food and Beverages
  • Transportation
  • Recycling
  • Manufacturing
  • Water and water wastage
  • And many more.

The above are some industries that use the SCADA system. Still, some more companies and industries take advantage of this SCADA system.

Final verdict

If you see you everywhere, you can find the SCADA system running Behind the scene. Maintain the local market system and refrigeration. It can help to achieve the quality standard at wastewater treatment plants.

It also ensures production and safety in the refinery. You can even track your energy at home with an effective SCADA system. It saves your time and money.

Prismecs SCADA services control the system more front and functionality. We provide more efficient storage. So, contact us anytime at 1 888 7747632!

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