Sequence control from SCADA in SCADA systems - Mini Project: Build & Apply

Sequence Control from SCADA

📖 Scenario: You are working with a SCADA system that controls a simple water pump sequence. The system needs to start pumps in order, wait for confirmation signals, and then move to the next pump. This ensures safe and controlled operation.

🎯 Goal: Build a sequence control program that starts pumps one by one, waits for their confirmation signals, and then proceeds to the next pump. You will create the initial pump status data, set a control variable, implement the sequence logic, and finally display the sequence progress.

📋 What You'll Learn

Create a dictionary called pumps with keys 'Pump1', 'Pump2', and 'Pump3' all set to false indicating they are off.

Create a variable called current_pump and set it to 1 to track which pump to start.

Write a while loop that runs while current_pump is less than or equal to 3, sets the corresponding pump to true, prints a confirmation message, and increments current_pump by 1.

Print the final pumps dictionary to show which pumps are on.

💡 Why This Matters

🌍 Real World

SCADA systems control industrial equipment like pumps, valves, and motors. Sequence control ensures safe startup and shutdown of equipment.

💼 Career

Understanding sequence control logic is essential for automation engineers and technicians working with SCADA systems in manufacturing, water treatment, and energy sectors.

1

Create initial pump status dictionary

Create a dictionary called pumps with keys 'Pump1', 'Pump2', and 'Pump3' all set to false.

SCADA systems

# Create the pumps dictionary with all pumps off
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with the exact keys and values.

2

Set current pump control variable

Create a variable called current_pump and set it to 1 to track which pump to start.

SCADA systems

pumps = {'Pump1': False, 'Pump2': False, 'Pump3': False}
# Create current_pump variable and set to 1
# Your code here

Need a hint?

Just assign the number 1 to the variable current_pump.

3

Implement pump start sequence loop

Write a while loop that runs while current_pump is less than or equal to 3. Inside the loop, set the pump with key 'Pump' + str(current_pump) in pumps to true, print "Pump {current_pump} started", and then increment current_pump by 1.

SCADA systems

pumps = {'Pump1': False, 'Pump2': False, 'Pump3': False}
current_pump = 1
# Write a while loop to start pumps in sequence
# Your code here

Need a hint?

Use a while loop with condition current_pump <= 3. Inside, build the pump key string and update the dictionary.

4

Display final pump status

Write a print statement to display the pumps dictionary showing which pumps are on.

SCADA systems

pumps = {'Pump1': False, 'Pump2': False, 'Pump3': False}
current_pump = 1
while current_pump <= 3:
    pump_key = 'Pump' + str(current_pump)
    pumps[pump_key] = True
    print(f"Pump {current_pump} started")
    current_pump += 1
# Print the pumps dictionary
# Your code here

Need a hint?

Use print(pumps) to show the final pump status dictionary.