PLCSIM is Siemens-official and production-grade — and needs a TIA Portal licence and Windows box to run. If you are still learning, here is a realistic browser-based path to Siemens fluency.
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Opening honesty
If you are a working controls engineer paid to prove an S7-1500 project runs identically in simulation and production, PLCSIM is what you use. Full stop. This page is for everyone who is learning Siemens from zero and cannot justify — or does not yet need — TIA Portal plus PLCSIM plus a Windows machine.
Background
PLCSIM is Siemens\'s official simulation tool for SIMATIC S7 controllers. PLCSIM Classic is bundled with TIA Portal V17+ and handles basic S7-1200 / S7-1500 simulation. PLCSIM Advanced is a separate floating licence that gives higher-fidelity simulation of S7-1500, ET 200SP, and Open Controller — used in industry for digital-twin commissioning, software-in-the-loop testing, and automated test benches. Current version is V7.0.
Pricing: PLCSIM Classic is bundled with TIA Portal (roughly €300 Starter to €4,000 Professional per year). PLCSIM Advanced is a separate licence, historically €1,500–€3,000 for a two-PLC-instance seat, quoted by hardware ID through a Siemens distributor. 90-day proof-of-concept licences exist but are not designed for learner use.
Strengths
It is the only environment that can faithfully emulate an S7 controller's behaviour across every instruction, timing corner, and PROFINET edge case.
PLCSIM Classic opens from TIA Portal. Download your project, flip to sim, and your programmer workflow is continuous.
PLCSIM Advanced exposes an API for automated software-in-the-loop testing. That is a serious industrial capability.
Where it stalls a learner
PLCSIM Classic needs a TIA Portal seat — €1,200+/yr minimum. PLCSIM Advanced stacks another €1,500+ on top. That is not a learner budget.
Mac, Linux, and Chromebook users are excluded unless they run a licensed Windows VM.
TIA Portal + PLCSIM pushes 20 GB. On a corporate-managed laptop that alone is a multi-hour conversation with IT.
You do not need production fidelity to learn the scan cycle. You need scored scenarios and repetition.
PLCSIM shows you a live tag table, not a curriculum. If you are teaching yourself, there is no scenario that tells you whether your code is right.
PLCSIM is Siemens-only. For many learners a week of Allen-Bradley practice is what makes Siemens click — a cross-dialect habit PLCSIM cannot build.
Feature comparison
| Feature | PLCSIM | Ours |
|---|---|---|
| Platform | Windows only + TIA Portal | Any browser |
| Price | €1,200+/yr (Classic), €3,000+ (Advanced) | Free tier + Pro monthly |
| Fidelity | Siemens-official production-grade | Learner-grade, Siemens dialect |
| Cross-dialect | No | IEC, Allen-Bradley, Siemens |
| Install footprint | ~20 GB | Zero |
| Scored scenarios | No | 40 auto-graded |
| Interview-timer | No | Yes (Pro) |
| Portfolio export | No | Yes (Pro) |
| Digital-twin / SiL API | Yes (Advanced) | No |
| PROFINET / Safety-F | Yes (Advanced) | No |
Which PLCSIM?
People searching for a PLCSIM alternative often mean two different products. It is worth being precise about which one you need before you decide a browser simulator is enough.
Bundled with TIA Portal V17+. Simulates S7-1200 / S7-1500 logic so you can test blocks without hardware. No external API, no co-simulation — it lives inside the TIA Portal workflow. This is the one most learners think of, and the IEC 61131-3 logic it runs is exactly what transfers to our browser simulator.
A separate paid licence. Exposes an API for software-in-the-loop testing and digital-twin commissioning, and simulates a virtual PROFINET interface so SCADA, HMIs, and test benches can connect as if to a real S7-1500. This is a production engineering tool — a browser learning simulator is not a substitute for it.
Siemens-flavoured scenarios
Third options
Mac users
S7-PLCSIM does not run on macOS. PLCSIM Classic is a Windows-only application that ships inside TIA Portal — and TIA Portal has never had a native Mac build. There is no official Siemens workaround. If you are on a Mac and need PLCSIM, your realistic options are:
If your goal is learning Siemens before you have access to a Windows TIA Portal seat, option 3 is the fastest path. If your goal is production commissioning or testing real project files, option 1 or 2 is the honest answer — a browser simulator cannot substitute for PLCSIM fidelity.
On Linux or a Chromebook? The same three options apply. S7-PLCSIM is Windows-only, so Linux users run TIA Portal in a Windows VM (VirtualBox, KVM, or a paid VM) for genuine PLCSIM fidelity. Chromebooks cannot run TIA Portal at all. For learning the Siemens dialect and scan-cycle model, our browser simulator runs natively in Chrome on Linux and Chrome OS — no VM, no licence, nothing to install.
No TIA Portal licence. No Windows. No install.
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