140 working machines. Your code runs them.
Each scenario ships with a briefing, an IO table, automated test cases, and a live physics animation. You write real ladder logic — the tests tell you if it’s right.
Preview Motor Start/Stop & Fault MonitoringOne library, visible skill progression
Start with one output. Finish by diagnosing the whole machine.
The catalogue is arranged around increasingly realistic control outcomes: Boolean fundamentals, motor circuits, material flow, process control, robotics and evidence-led fault finding.
The scenario library now includes 3D—without removing a single 2D machine.
Use guided 3D duplicates when spatial motion helps, keep the fast 2D version when it does not, or compose a custom PLC-driven factory in the Pro 3D Sandbox.
Public viewer is free. Guided 3D starts on Basic; composing and saving custom 3D scenes is Pro.
151 real-time factory components
Load the interactive viewer when you are ready to orbit the models.
Loads 3D only after your click
Not mock projects. Real machine control, graded.
Each scenario is a self-contained machine with physics, inputs, outputs, and failure modes — plus a set of automated tests that decide whether your program passes. If the tests go green, the machine runs. If they don’t, the machine tells you why.
Six verticals
Fundamentals, motor control, water/HVAC, packaging, safety, and process. One library, every sector.
Objective grading
Tests assert outputs against inputs over time. Either the tests pass or they fail — no subjective review.
Physics-driven
Motors spool up, tanks drain, palletisers rotate. Your code drives the machine — and the machine pushes back.
Failure modes included
Thermal trips, overflows, lost flame, light-curtain breaks. Writing for happy-path won't pass the tests.
Scenario libraries by training goal
Turn the catalogue into a role-specific training path
The same scenario catalogue can support technician assessment, maintenance troubleshooting, operator response, commissioning practice and industry-focused team pilots. Choose a path to see the relevant machines and the limits of the training model.
Industrial automation training
Complete PLC, HMI, sensors, drives, safety, robotics, process and 3D factory curriculum.
WorkforceIndustrial maintenance training
PLC fault-finding across motors, drives, sensors, safety, pumps and process utilities.
WorkforceMaintenance technician assessment
Practical, auto-graded controls tasks for screening, baselining and post-training evidence.
WorkforceOperator training simulator
Repeatable startup, alarm, trip and recovery practice on dynamic PLC-controlled processes.
WorkflowVirtual commissioning training
Sequence verification, interface handshakes, abnormal tests and commissioning evidence.
IndustryFood processing automation
CIP, batching, fermentation temperature, bottling and packaging control practice.
IndustryWater and wastewater automation
Duplex pumps, lift stations, analog levels, dosing, valves and alarm response.
IndustryPharmaceutical automation
Qualified batch holds, release permissives, deviations, CIP and record completion.
IndustryMining automation
Crusher protection, conveyor sequencing, VFDs, blocked chutes and vibration trips.
IndustryOil and gas automation
Compressor startup, ESD, blowdown, burner management and process-utility patterns.
All 140 scenarios.
Click any card for a full preview page — briefing, IO table, test cases, and a live Phaser animation of the machine. Sign up to play.
Free15 scenarios
Motor Start/Stop & Fault Monitoring
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
Garage Door Controller
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Beginner 01 — Switch turns on Light
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 02 — Two switches (AND)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 03 — Two switches (OR)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 04 — Stop button (NC contact)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 05 — Start/Stop (no latch)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 06 — Latch the start (SET coil)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 07 — Latched Start/Stop (SET/RESET)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 08 — Delayed-on light (TON)
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 09 — Conveyor with auto stop
Build the control pattern, run it scan by scan, and prove the required behavior.
Beginner 10 — Count five boxes (CTU)
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Traffic Light
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 1 — 24 VDC Power Supply & Grounding
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 2 — NPN / PNP (Sinking & Sourcing)
Build the control pattern, run it scan by scan, and prove the required behavior.
Basic — $12/mo45 scenarios
Batch Mixer
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Parking Gate Controller
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Pump Alternation (Duty/Standby)
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
CIP Sequence Controller
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Sortation Diverter
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Light Curtain Muting
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
E-Stop & Safety Reset
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Two-Hand Control (Safety)
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Jog / Run Motor Control
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
Forward / Reverse Motor
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
Star-Delta Motor Starter
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
Two-Speed Motor Control
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
Pneumatic Press Cycle
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Lift Station — Alternating Pumps
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
Chemical Dosing Control
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
Flushing Valve Sequence
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
Boiler Startup Sequence
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
Chiller Lead-Lag Sequencing
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
VAV Damper Modulation
Control a realistic process with sequencing, analogue evidence, alarms, and recovery states.
Carton Erector Sequence
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Case Packer
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Bottle Labeler
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Palletizer (Simple)
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Pick and Place (Vacuum)
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Vertical Lift Conveyor
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
3-Way Sortation Diverter
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Robot PLC Handshake
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Weld Cell Cycle
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Fermentation Temperature Control
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Brew Schedule Sequencer
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Safety Mat Monitor
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Level Alarm Stack (First-Out)
Build the control pattern, run it scan by scan, and prove the required behavior.
Pick & Place — 3D Gantry Cell
Build the control pattern, run it scan by scan, and prove the required behavior.
Car Wash
Build the control pattern, run it scan by scan, and prove the required behavior.
Scale a 4–20 mA Pressure Transmitter
Build the control pattern, run it scan by scan, and prove the required behavior.
Traffic Light 01 — One Lamp On
Build the control pattern, run it scan by scan, and prove the required behavior.
Traffic Light 02 — Manual Red/Yellow/Green
Build the control pattern, run it scan by scan, and prove the required behavior.
Traffic Light 03 — Timed Sequence (TON)
Build the control pattern, run it scan by scan, and prove the required behavior.
Traffic Light 04 — Auto-Cycling Both Directions
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 1 — Button → Light
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 2 — E-Stop (NC contact)
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Lesson 3 — Two-Hand Press (AND)
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Lesson 4 — OR Stop
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 5 — Seal-in Motor
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 6 — SET/RST Latching
Build the control pattern, run it scan by scan, and prove the required behavior.
Pro — $29/mo80 scenarios
Conveyor Sort
Build the control pattern, run it scan by scan, and prove the required behavior.
Tank Fill Station
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Elevator Controller
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
PID Temperature Control
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Bottling Line
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Conveyor Sort — 3D Cell
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Tank Fill — 3D Process Skid
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Duplex Pump Control
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Sorting Machine
Build the control pattern, run it scan by scan, and prove the required behavior.
Pharma Validated Batch Record
Tune and validate process behavior against live values, faults, and automated acceptance tests.
Mining Crusher Protection Sequence
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Gas Compressor ESD & Blowdown
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 01 — NO/NC Swap
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 02 — Broken Seal-in
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 03 — Wrong Address
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 04 — Stuck Input
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 05 — Scan-Order Race
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 06 — Timer Not Resetting
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 07 — Counter Overflow
Build the control pattern, run it scan by scan, and prove the required behavior.
Fault 08 — Intermittent Bug
Build the control pattern, run it scan by scan, and prove the required behavior.
Tank Level Alarms with Hysteresis
Build the control pattern, run it scan by scan, and prove the required behavior.
Temperature Setpoint with Deadband
Build the control pattern, run it scan by scan, and prove the required behavior.
Proportional Valve — Level Error
Build the control pattern, run it scan by scan, and prove the required behavior.
VFD Conveyor Speed Control
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
VFD Fault Detection & Safe Reset
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Modbus Register Read — Drive Status
Build the control pattern, run it scan by scan, and prove the required behavior.
Safety Light Curtain Mute Logic
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Lesson 7 — Edge Trigger (R_TRIG)
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 8 — Delayed-On (TON)
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 9 — Delayed-Off (TOF)
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 10 — Counter (CTU)
Build the control pattern, run it scan by scan, and prove the required behavior.
Lesson 11 — Conveyor Reject
Coordinate sensors, product flow, timing, and actuators on a working material-handling cell.
Wiring 3 — Wire a Photoeye Sensor to %I0.0
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 4 — Digital Output to Relay / Contactor
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 5 — Pull-up & Pull-down Resistors
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 6 — 4-20 mA Analog Input Loop
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 7 — 0-10 V Analog Output (VFD Speed Reference)
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 8 — Dual-Channel E-Stop (Cat 3 Safety)
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
Wiring 9 — RS-485 / Modbus RTU Daisy Chain
Build the control pattern, run it scan by scan, and prove the required behavior.
Wiring 10 — Industrial Ethernet (EtherNet/IP)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 01 — XIC/XIO Basic Contacts
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 02 — Seal-In (Latching) Circuit
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
CCST 03 — TON Timer (On-Delay)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 04 — TOF Timer (Off-Delay)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 05 — CTU Counter (Count-Up)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 06 — SET / RESET Coils
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 07 — One-Shot Rising Edge (R_TRIG)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 08 — Simple PLC Program Structure
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 09 — Integer Comparison (GEQ/LEQ)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 10 — Forward/Reverse Interlocking
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
CCST 11 — Diagnose: NO/NC Swap (Repeat)
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
CCST 12 — Diagnose: Wrong I/O Address
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 13 — Diagnose: Timer Not Resetting
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 14 — Diagnose: Seal-In Missing
Commission practical motor logic with interlocks, protection, feedback, and safe reset behavior.
CCST 15 — Diagnose: Scan-Order Race Condition
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 16 — Forced I/O and Override Risks
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 17 — Diagnose: Counter Never Resets
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 18 — Reading a Network Diagram
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 19 — Diagnose: Intermittent Output Fault
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 20 — Using the Tag Browser to Verify I/O
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 21 — E-Stop Circuit Basics
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
CCST 22 — Two-Hand Control
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
CCST 23 — Safety Light Curtain Muting
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
CCST 24 — Safety Category Levels
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
CCST 25 — Lockout/Tagout (LOTO) PLC Interlock
Diagnose the unsafe state, implement the reset rules, and prove the machine fails safely.
CCST 26 — Drive Enable / Ready Handshake
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 27 — Speed Reference Scaling
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 28 — Servo Home Sequence
Tune and validate process behavior against live values, faults, and automated acceptance tests.
CCST 29 — Drive Fault / Alarm Handling
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 30 — Encoder Position Comparison
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 31 — HMI Tag Binding Basics
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 32 — Alarm State Propagation to HMI
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 33 — Mode Selector (Auto/Manual)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 34 — Acknowledge and Clear Alarms
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 35 — Recipe Download Simulation
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 36 — Reading a Ladder Rung Description
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 37 — Interpreting an I/O List
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 38 — Program Comment Standards
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 39 — Change Management (Revision Tracking)
Build the control pattern, run it scan by scan, and prove the required behavior.
CCST 40 — Full Functional Description to Ladder
Build the control pattern, run it scan by scan, and prove the required behavior.
Briefing. IO. Tests. A machine that moves.
Every scenario opens with a briefing the way a real control engineer would describe a job — process, safety objectives, IO list. Tests cover the golden path plus the failure modes that get people fired.
- Briefing. Plain-English description of the machine and what it has to do.
- IO table. Every input and output, with addresses and data types, pre-wired for you.
- Automated tests. Each scenario has 4–8 test cases with hidden grader assertions.
- Live animation. A Phaser-rendered machine that actually reacts to your outputs.
Start with a traffic light. Finish with PID.
Sign up free — the first scenarios never need a card. No install, no hardware, no simulator license.