PLC Logic Simulator
The PLC Logic Simulator enables simulation and analysis of PLC programs directly in the browser. Users can test logic operations, contacts, coils, timers and counters without needing real PLC hardware or a dedicated development environment.
The tool is suitable for education, training, troubleshooting and developing simple control logic. Changes to inputs and outputs are visualised immediately and help you understand the behaviour of a controller.
What is a PLC Logic Simulator?
A PLC Logic Simulator virtually replicates the basic functions of a programmable logic controller (PLC). Logic circuits can be created, tested and analysed before they are transferred to a real controller.
This makes it possible to detect errors early and check control sequences without having to commission machines or plants.
Key functions
- Simulation of PLC inputs and outputs
- Digital contacts and coils
- AND, OR and NOT operations
- Timer functions (TON, TOF, TP)
- Counters and memory functions
- Real-time display of signal states
- Step-by-step analysis of control sequences
- Browser-based use without installation
Understanding the basics of PLC logic
Programmable logic controllers are used in machines, production plants, conveyor technology, building automation and many other areas. Control logic is based on signals from sensors and switches that control outputs such as motors, valves or relays.
With the simulator, users can follow how signals are processed and what effects changes have on the control sequence.
Typical use cases
- Learning PLC basics
- Education and teaching
- Preparation for PLC courses
- Analysis of control logic
- Testing simple automation tasks
- Troubleshooting logical sequences
- Documentation and demonstration of controls
- Quick check of circuit changes
Supported PLC concepts
The simulator focuses on the basic elements of digital control engineering. These include normally open and normally closed contacts, markers, self-holding, interlocking, time functions and simple sequential controls.
These functions form the basis of many PLC programs in industry and automation.
Benefits of simulation
- No PLC hardware required
- Fast testing of logic changes
- Safe learning environment without risk to plants
- Visualisation of signal states in real time
- Better understanding of complex control sequences
- Easy introduction to automation engineering
How does this tool work?
- Create or load a logic circuit
- Activate input signals
- Configure timers and counters
- Start the simulation
- Observe signal traces and states
- Analyse control sequences
- Optimise the logic and test again
This online tool teaches the basics of PLC programming and helps users understand, test and validate control logic – directly in the browser and without additional software.