What SCADA is and what it provides to an ICS?

SCADA provides ICS (Industrial control systems) which is a huge segment within the operational technology industry. Operational Technology (OT) is a computing system used to manage industrial operations as opposed to administrative operations. These operational systems comprise product line management, mining operations control, oil and gas monitoring, and so on.

It is made up of various systems used to monitor and control the processes within the industry. This could be oil refinery cracking towers, mine site conveyor belts, power consumption on power grids, or alarms from building IT systems.

Typically, ICSs are mission-critical applications with a high-availability need. A lot of ICSs can be categorized either into a continuous process control system, mostly managed through programmable logic controllers (PLCs), or discrete process control systems (DPC), that might make use of a PLC or a different batch process control device.

ICSs are mostly managed through a SCADA (Supervisory Control and Data Acquisition) system that delivers a graphical user interface for operators to easily look at the status of a system, get any alarms showing operations that are out of band, or enter system adjustments to manage the process under control. SCADA provides ICS that shows the process under control and gives access to control properties.

What SCADA is and what it provides to an ICS: What is an ICS?

An ICS is one of the different kinds of control systems used to monitor industrial processes. It can either be made up of a few controllers or a complex network of interactive control systems formed by various connections.

These systems receive data from remote sensors that measure and monitor process variables. These variables are then compared with the specific points. The system then transmits a command that will control processes through the last elements in the control, like control valves.

Industrial control systems provide an easy way for operators to monitor, manage, and control processes within their organizations. These systems will make sure that industrial operations run smoothly, and problems are detected before they can escalate. SCADA provides ICS to monitor these processes.

What SCADA is and what it provides to an ICS: What is SCADA?

SCADA is an automation control system used by industries. The system is made up of a centralized system responsible for monitoring and controlling the whole sites, which could range from the industrial plants to complex structures across the country.

SCADA provides ICS and it aims to monitor and control field devices at remote locations. The systems are critical because they assist in maintaining efficiency by gathering and processing real-time data. SCADA is a centralized system that observes and controls the whole area. It gets information regarding the process and transmits it to the operator.

What SCADA is and what it provides to an ICS: How do SCADA Systems Work?

A SCADA system works by operating with signals that communicate through channels to give users remote control over any equipment in a particular system. It also implements a distributed database, or tag database, that has points or tags throughout the plant. These points show one input or output value that is monitored by the SCADA system in the centralized control room.

SCADA provides ICS because a user can store the points in the distributed database as value-timestamp pairs. You can set up the SCADA systems to also gather metadata, like programmable logic controller (PLC) register paths and alarm data.

The main duty of a SCADA system is to monitor and control company equipment for both public and private organizations. In our world today, there are SCADA systems almost everywhere, including oil and gas, industrial plants, transportation, manufacturing, power distribution, water control, and so on.

SCADA provides ICS by allowing industrial organizations to:

  • Locally control industrial processes or at remote areas
  • Use a log file to record events
  • Gather, monitor, and process real-time data and information
  • Directly interact with devices like pumps, valves, sensors, motors, and so on through human-machine interface (HMI) software

SCADA systems are vital for industrial companies because they help to maintain efficiency, process data for better decisions, and communicate system problems to help prevent downtime.

The basic architecture of SCADA starts with PLCs or RTUs, which are microcomputers that communicate with various objects like factory machines, sensors, HMIs, and end devices, and then transmit the information to computers with SCADA software. The software processes, shares, and shows the data, helping users analyze the data and make vital decisions.

For instance, the software can quickly let an operator know that a batch of products is showing a high incidence of errors. The operator can then stop the operation and sees the system data to determine the cause of the problem. After reviewing the data, the operator will know the machine that was malfunctioning.

What SCADA is and what it provides to an ICS: SCADA Provides ICS for which Industries?

  • Food and beverage
  • Pharmaceutical
  • Oil and gas
  • Commercial building management
  • Energy pipelines and utilities
  • Seafood processing
  • Sorting and fulfillment
  • Power and energy
  • Recycling
  • Transportation
  • Water and wastewater

Almost anywhere you look today, you’ll see some form of SCADA system running. Effective use of SCADA systems can lead to significant savings of time, money, and energy. Various case studies have been published showing the advantages of using modern SCADA systems.

What SCADA is and what it provides to an ICS: SCADA and ICS

Critical industries, like electricity generation plants, transportation systems, oil refineries, chemical factories, and manufacturing companies are large, distributed complexes. Plant operators have to regularly monitor and control various sections of the plant to make sure they operate properly.

During the past ten years, this remote command and control have been possible as a result of the development of networking technology and the advent of ICS.

ICS are command and control networks and systems created to support industrial processes. The largest subgroup of ICS is SCADA. ICS has undergone a great transformation from proprietary, isolated systems to standard technologies and open architectures greatly interconnected with other corporate networks and the internet.

Today SCADA provides ICS because ICS products are mostly based on standard embedded systems platforms, used in different devices, like cable modems or routers, and they mostly use commercial off-the-shelf programs. All this has led to the reduction of costs, ease of use, and enabled remote control from different locations.

What SCADA is and what it provides to an ICS: Modern SCADA Systems

The modern systems make it possible for operators to view real-time data about the industry from any location in the world. This access to real-time information makes it possible for businesses, governments, and individuals to make data-driven choices about how to improve their processes. Without SCADA software, it would be very hard to get enough sufficient data for making well-informed decisions regularly.

Additionally, a lot of modern SCADA systems have rapid application development capabilities that allow operators to easily create applications, even if they don’t have any knowledge of software development. Modern IT standards and practices like SQL and web-based applications into SCADA software have improved the efficiency, security, productivity, and reliability of the systems.

SCADA software that uses SQL databases has a great benefit over antiquated SCADA software. One advantage of SQL databases with a SCADA system is that it makes it easy to integrate into existing systems, making it possible for data to seamlessly flow through the whole industry.

What SCADA is and what it provides to an ICS: Functions of SCADA

SCADA carries out many functions in addition to providing ICS. These functions make it possible for proper management of remote facilities. The core functions of a SCADA system include:

Acquiring data

The collection of SCADA data mostly involves analog to digital conversion. For instance, it converts temperature to degrees Celsius, converts transmit signal strength to dBm, and measures channel quality in errored seconds.

Communicating networked data

The gathered data is either shared spontaneously or in response to a request for data to an upstream consolidator. The communication channel can either be digital or analog, depending on your preference. SCADA network also has some kind of transport validation not needing any form of content validation.

Presenting data

The data gathered has to be processed, organized, and presented for operators to make the right response and control choices. The presentation can be in a tabular or a graph format against mapping or image backgrounds.

Decrease production waste

Using a SCADA system can help reduce production waste and increase general efficiency by giving vital insight on production to management and operators. The data gotten from a SCADA system can increase data-driven decisions and cause an increase in output, reduce costs, and increase control of industrial processes.


If control choices are required and the SCADA system supports output, the right commands can be passed across to affect particular operational changes. A lot of control actions are carried out by PLCs and RTUs.

Automated response

Another use of SCADA is quick notification and automated response to system issues. When you immediately know the problems in the production process, you can quickly respond to reduce equipment downtime and wasted products.

What SCADA is and what it provides to an ICS: Conclusion

Connectivity is still a significant driver for OT operations, however, moving forward, security is growing in importance – and the capabilities of SCADA make it an ideal solution.

From its ease of installation to its ability to merge several communication technologies and transmit data down a preferred path, SCADA systems have practical uses for all organizations. SCADA provides ICS since it can provide users with the required visibility to in-network threats and forensic reports to quickly shut down attacks on vital infrastructure.

Read more: How are cybersecurity policy affecting ICS and Scada?

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