Distributed SCADA architecture in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the main component that collects data from remote units in a distributed SCADA system.

SCADA systems

class [1]:
    def __init__(self):
        self.data = []

    def collect_data(self, remote_unit):
        self.data.append(remote_unit.send_data())

Drag options to blanks, or click blank then click option'

AControlPanel

BRemoteUnit

CMasterStation

DSensorNode

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a remote unit instead of the central collector.

The MasterStation is the central component that collects data from remote units in a distributed SCADA system.

2fill in blank

medium

Complete the code to send data from a remote unit to the master station.

SCADA systems

class RemoteUnit:
    def __init__(self, id):
        self.id = id

    def [1](self):
        return f"Data from unit {self.id}"

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Asend_data

Breceive_data

Cprocess_data

Dstore_data

Attempts:

3 left

💡 Hint

Common Mistakes

Using receive_data which is for incoming data.

The method send_data is used by remote units to send their data to the master station.

3fill in blank

hard

Fix the error in the code that initializes communication between master and remote units.

SCADA systems

master = MasterStation()
remote = RemoteUnit(1)
master.collect_data([1])

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Aremote.receive_data()

Bremote

Cremote.send_data()

Dremote.data

Attempts:

3 left

💡 Hint

Common Mistakes

Passing remote.send_data() which sends data prematurely.

The collect_data method expects a remote unit object, not the data itself. So passing remote is correct.

4fill in blank

hard

Fill both blanks to create a dictionary of remote unit IDs and their data in the master station.

SCADA systems

data_summary = {unit.id: unit.[1]() for unit in remote_units if unit.[2]() is not None}

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Asend_data

Creceive_data

Dprocess_data

Attempts:

3 left

💡 Hint

Common Mistakes

Using receive_data which is incorrect for remote units.

We use send_data() to get data from each remote unit and check if it is not None before adding it to the dictionary.

5fill in blank

hard

Fill all three blanks to implement a control command sent from the master to a remote unit and confirm execution.

SCADA systems

class MasterStation:
    def send_command(self, unit, command):
        response = unit.[1](command)
        if response == [2]:
            print(f"Command [3] executed successfully on unit {unit.id}")

Drag options to blanks, or click blank then click option'

Aexecute_command

BTrue

Ccommand

Dsend_data

Attempts:

3 left

💡 Hint

Common Mistakes

Using send_data instead of execute_command.

The master station calls execute_command on the remote unit, checks if the response is True, and prints the command executed.