Educational use disclaimer

Last updated: October 29, 2026

For learning and simulation only. Do not use this application to control real machinery or approve an industrial control design.

Simulation is a teaching model

PLC Practice Lab implements a limited BOOL ladder-logic model with a 20 ms logical scan, NO/NC contacts, coils, TON timers and CTU counters. Browser timing is not industrial real time. Background tabs, device scheduling and browser behavior can interrupt execution.

Tests are limited to each exercise

A passing exercise means the submitted program passed the included test cases under this simulator's rules. It does not establish complete correctness, functional safety, compliance with IEC standards, suitability for a physical installation or compatibility with a real CPU.

Real equipment requires independent verification

Real projects require the actual manufacturer's documentation, hardware-specific validation, risk assessment and appropriately qualified review. Do not transfer example programs to real machinery without that independent work.

No vendor endorsement

The three interface styles are original teaching layouts. This project is independent of PLC hardware and programming-software vendors and has no claimed certification or endorsement.

Data and service limits

Keep exported backups of work you want to retain. Local drafts and saved programs can be lost if browser data is removed or storage fails. See the privacy policy, terms of use and technical limitations for details. Mandatory legal rights remain unaffected.

Operator and contact

PLC Learn is run by an independent creator. This site does not currently offer a public contact form or support mailbox.