Practice missions
Every mission in one library, grouped by topic. Pick any you like: write the logic, run it on a working machine and let the automatic tests check it. The course takes you through them in order.
0 / 61missions complete
Foundations
Outputs, latching, permissives, timers, counting and alarms.
01FoundationPump skidYour first command
Make a pump follow a button.ST/SCL · Ladder02FoundationPump skidPermission to run
Run only when every condition is right.ST/SCL · Ladder
03FoundationMixing vesselBring the tank up to temperature
Heat the water, then stop at 45°C.ST/SCL · Ladder04FoundationPump skidMake it stay running
Press Start once. It runs until Stop.ST/SCL · Ladder06AppliedPump skidReview the AI: Stop priority
Two writes look right. Check which one wins.ST/SCL · Ladder07FoundationPump skidWait for the process
Start the pump only after a 200 ms hold.ST/SCL · Ladder08FoundationPump skidFinish the purge
Keep the pump running 200 ms after release.ST/SCL · Ladder09AppliedPump skidReview the AI: A fresh delay
Check what happens when Start is released and pressed again.ST/SCL · Ladder
10FoundationFilling lineCount the arrivals
Count each bottle once. Stop at three.ST/SCL · Ladder11AppliedFilling lineCount with a one-shot
One bottle covers the sensor for many scans. Count it once.Ladder12AppliedFilling lineCount bottles as they leave
Count each bottle as it clears the sensor, not as it arrives.ST/SCL · Ladder14AppliedFilling lineReview the AI: One bottle, one count
Check a bottle that stays under the sensor.ST/SCL · Ladder21ProMixing vesselAcknowledge, then reset an alarm
Treat the high level, the alarm and the horn as three separate things.ST/SCL · LadderIncluded in Pro22ProMixing vesselHand over between Auto and Manual
Keep the pump steady when control changes hands.ST/SCL · LadderIncluded in ProFunction blocks
Scaling, level control, feedback, selection and filtering.
15ProMixing vesselGive the signal meaning
Turn raw sensor counts into a percentage.FBDIncluded in Pro16ProMixing vesselStop the short cycling
Two switch points. A calmer pump.FBDIncluded in Pro18ProMixing vesselA command is not feedback
Check that the valve really opened.FBDIncluded in Pro20ProPump skidBring in the standby
Choose one pump for the job.FBDIncluded in Pro31ProMixing vesselAdd four measured values
Practise arrays on four readings before you build a filter.ST/SCLIncluded in Pro32ProMixing vesselAverage the last N readings
Smooth a noisy level. Average only the readings you have, and drop the oldest.ST/SCLIncluded in Pro33ProMixing vesselDescribe one pump with a structure
Keep a pump’s data together under one tag name.ST/SCLIncluded in Pro34ProPump skidCall one block for two pumps
One block, two copies, each with its own memory.ST/SCLIncluded in ProSequencing
Steps, transitions, stored actions and batch phases.
23ProMixing vesselOne batch, four phases
Fill. Mix. Drain. Complete.SFC/GRAPHIncluded in Pro24ProMixing vesselChoose the right route
Pick route A or B, then stick with it.SFC/GRAPHIncluded in Pro25ProPump skidWhat stays on?
A stored output stays ON until you reset it.SFC/GRAPHIncluded in Pro26ProMixing vesselReturn to a known state
Reset the chart and turn every output OFF.SFC/GRAPHIncluded in Pro30ProMixing vesselRun, hold and recover a phase
Use a numbered state to run, pause and safely restart a mixing job.ST/SCLIncluded in ProEveryday controls
4–20 mA instruments, alarm limits and variable speed drives.
35ProMixing vesselRead a 4–20 mA transmitter
Turn raw input counts into a level the operator can trust.ST/SCL · Ladder · FBDIncluded in Pro37ProMixing vesselCatch a broken wire
Spot a failed transmitter and stop trusting its number.ST/SCL · Ladder · FBDIncluded in Pro38ProMixing vesselAlarm limits that don’t chatter
High and low level alarms with a deadband.ST/SCL · Ladder · FBDIncluded in Pro39ProPump skidRun a pump on a drive
Send a run command and a speed, then wait for the drive to prove it.ST/SCL · Ladder · FBDIncluded in Pro40ProPump skidTrip, reset, restart on purpose
Handle a drive fault without a surprise restart.ST/SCL · Ladder · FBD · SFC/GRAPHIncluded in ProMachines
Real machines, from a first compressor to expert-only systems.
42ProAir compressor stationKeep the workshop in air
Run a compressor between two pressures.ST/SCL · LadderIncluded in Pro
43ProCar park entry barrierOne car at a time
Raise the arm for a ticket, lower it once the car is clear.ST/SCL · LadderIncluded in Pro
44ProRoller shutter doorStop before the pallet
Open and close a door that reverses for obstructions.ST/SCL · LadderIncluded in Pro
45ProDuty/standby sump pumpsTake turns, survive the storm
Alternate two pumps and bring in the standby.ST/SCL · LadderIncluded in Pro
46ProPedestrian crossingGreen figure, on time
Run a crossing's six stages with their timers.ST/SCL · LadderIncluded in Pro
47ProBox sorterTall boxes off the line
Remember a box's height and push it at the right moment.ST/SCL · LadderIncluded in Pro
48ProPick and placeDown, grip, up, across
Step a pick and place through its sequence, every move confirmed.ST/SCL · LadderIncluded in Pro
49ProTwo-hand pressBoth hands, every time
Write two-hand control for a press, with an interlocked guard.ST/SCL · LadderIncluded in Pro
50ProBatch weigher25 kg, every sack
Feed fast, then slow, stop early, and learn from every batch.ST/SCL · LadderIncluded in Pro
51ProAir handling unit21 °C, fan proven, coil safe
Start an air handler in order and write its PI temperature loop.ST/SCL · LadderIncluded in Pro
52ProGoods liftLevel, then open
Run a three-stop goods lift: calls, two speeds, doors and a safety edge.ST/SCL · LadderIncluded in Pro
53ProBoiler burnerPurge, prove, fire
Write a burner management sequence that locks out on any doubt.ST/SCL · LadderIncluded in Pro
54ProClean-in-place setClean, recover, rinse
Run a CIP recipe with hold and resume, routing every litre by conductivity.ST/SCL · LadderIncluded in Pro
55ProOverhead craneBay A to bay B
Position three crane axes from their encoders and move plates on a magnet.ST/SCL · LadderIncluded in Pro
56ProSewage lift stationThree pumps, one well
Stage pumps on an analogue level, share the hours and survive failures.ST/SCL · LadderIncluded in Pro
57ProInspection and rejectThe right bottle, every time
Track items by encoder through a queue, and verify every reject.ST/SCL · LadderIncluded in Pro
58ProBatch reactorHold it at 80
Run an ISA-88 style batch with an exothermic reaction and safe Hold and Abort.ST/SCL · LadderIncluded in Pro
59ProPacking lineNever stop the filler
Coordinate three machines and two buffers as one line.ST/SCL · LadderIncluded in Pro
60ProGantry palletiserInterlock every layer
Compute each carton's place from a pattern and build a stable pallet.ST/SCL · LadderIncluded in Pro
61ProModel factoryRun the whole factory
Start-up, batching, bottling, rejects, robot, wrapper, AGV and safety: one programme for the whole plant.ST/SCL · LadderIncluded in ProFault finding
Start from an operator's report and repair existing code.
05AppliedPump skidStop doesn't stop it
Find the path that gets round Stop.ST/SCL · Ladder13AppliedFilling lineIt never reaches three
Something keeps clearing the count. Find it.ST/SCL · Ladder17ProMixing vesselThe pump chatters
Look at the trend before you change the 30% or 70% limits.FBDIncluded in Pro19ProMixing vesselNuisance alarm
A valve takes a moment to open. Give it time.FBDIncluded in Pro27ProPump skidComplete, but still pumping
Find the command that stays on after its step ends.SFC/GRAPHIncluded in Pro36ProMixing vesselEmpty until a fifth full
The level reads 0% while the tank fills. Find out why.ST/SCL · Ladder · FBDIncluded in Pro41ProPump skidIt started on its own
After a drive reset the pump restarted. Find the memory that survived the trip.ST/SCL · Ladder · FBD · SFC/GRAPHIncluded in ProCapstone
Larger problems that combine everything.