Industrial Automation Chapter 9: SCADA 9.1 Quiz

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Questions and Answers

What does SCADA stand for?

Systematic Control and Data Analysis

Systematic Collection and Data Analysis

Supervisory Control and Data Acquisition (correct)

Supervisory Collection and Data Acquisition

What was the first data acquisition method used in early SCADA systems?

Wireless sensor network data acquisition

Satellite-based data acquisition

Panels of meters, lights, and strip chart recorders (correct)

Digital computer-based data acquisition

What are the fundamental principles of modern SCADA systems?

Satellite monitoring and control

Wireless communication and control

Data storage and processing

Telemetry and data acquisition (correct)

What is one of the most widely used control systems in industry?

PLC (Programmable Logic Controller) Signup and view all the answers

As needs grew to monitor and control more devices in the plant, what happened to the PLCs?

They were distributed and the systems became more intelligent and smaller in size Signup and view all the answers

What does DCS stand for?

Distributed Control Systems Signup and view all the answers

What is one advantage of a PLC / DCS SCADA system mentioned in the text?

The capability to record and store a large amount of data Signup and view all the answers

What is a disadvantage mentioned about the PLC / DCS SCADA system in the text?

The operator's ability to see beyond the PLC Signup and view all the answers

What is the purpose of the master station in a SCADA system?

To display acquired data and allow remote control tasks Signup and view all the answers

What distinguishes proprietary SCADA software from open software?

Open software is developed for a specific hardware, while proprietary can be used with any hardware Signup and view all the answers

What is the most widely used LAN today, as mentioned in the text?

Ethernet LAN Signup and view all the answers

What type of device collects field data and sends it back to a master station in a SCADA system?

Remote Terminal Units (RTUs) Signup and view all the answers

'Turn key' solutions are associated with which type of SCADA software?

Proprietary software Signup and view all the answers

What is the main purpose of connecting the SCADA network to a LAN?

To enable all nodes on the network to share information Signup and view all the answers

What is the primary purpose of using a modem in SCADA systems?

To connect RTUs at remote locations to a central location Signup and view all the answers

Study Notes

SCADA Systems

SCADA stands for Supervisory Control and Data Acquisition.
The first data acquisition method used in early SCADA systems was telemetry.

Evolution of Control Systems

As needs grew to monitor and control more devices in the plant, PLCs (Programmable Logic Controllers) became too large and complex, leading to the development of Distributed Control Systems (DCS).
DCS stands for Distributed Control Systems.

SCADA System Principles

The fundamental principles of modern SCADA systems include monitoring and controlling field devices, data acquisition, and supervisory control.

Advantages and Disadvantages of PLC/DCS SCADA Systems

One advantage of a PLC/DCS SCADA system is that it allows for real-time monitoring and control of devices.
A disadvantage of a PLC/DCS SCADA system is that it can be complex and difficult to integrate multiple systems.

SCADA System Components

The master station in a SCADA system is responsible for collecting and processing data from field devices.
RTUs (Remote Terminal Units) are devices that collect field data and send it back to the master station.

SCADA Software

Proprietary SCADA software is distinguished from open software by its customized and locked-in nature.
'Turn key' solutions are associated with proprietary SCADA software.

Networking in SCADA Systems

The most widely used LAN (Local Area Network) today is Ethernet.
The main purpose of connecting the SCADA network to a LAN is to enable communication between devices.
The primary purpose of using a modem in SCADA systems is to enable remote communication and monitoring.

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Description

Test your knowledge of SCADA (Supervisory Control and Data Acquisition) systems with a focus on the introduction and brief history. Explore the evolution from manual control knobs to modern SCADA technology.