AI for Siemens TIA Portal
If you're looking for AI for TIA Portal, PLC Assist is an AI coding agent built specifically for industrial automation. It connects directly to your TIA Portal V19+ project, writes SCL into the IDE, and compiles + fixes errors on its own — all from a chat sidebar in your browser.
PLC Assist talks to TIA Portal through Siemens' Openness API, so the same agent that runs against CODESYS and Beckhoff TwinCAT also runs against TIA Portal — no vendor-specific UI to relearn.
Under the hood, PLC Assist runs on Anthropic's Claude — the same model family that powers Claude Code — tuned for the patterns and pitfalls of industrial automation.
What PLC Assist does inside TIA Portal
- Writes code directly into your TIA Portal project. Creates organization blocks, function blocks, functions, data blocks, and UDTs straight into TIA Portal — no copy-paste, no manual XML editing.
- Spec → SCL code from a PDF. Drop a control specification (PDF or image) into chat. The agent reads it, picks the right Siemens libraries, and implements the function blocks.
- Compiles and fixes errors on its own. Reads TIA Portal compiler output and iterates on the SCL until it builds. You see the result, not the back-and-forth.
- Reviews SCL for edge cases. Walks your code looking for race conditions, scan-cycle pitfalls, and Siemens-specific anti-patterns — before they hit a real machine.
- Generates documentation. Produces docs for your blocks, libraries, and project structure on demand.
Works with every TIA Portal PLC family
PLC Assist talks to TIA Portal through Openness on the engineering machine, so any PLC family you can program in TIA Portal is supported:
- TIA Portal V19+
- S7-1500 / S7-1500F
- S7-1200
- S7-1500R/H redundant
- ET 200SP / ET 200SP F
- ET 200pro
- LOGO!8
- SIMATIC PCS 7 (TIA-integrated)
Why not just use Siemens Eigen Engineering Agent?
Siemens Eigen Engineering Agent and Engineering Copilot TIA are deeply integrated with TIA Portal — which is great if TIA is your only PLC platform. Most engineering services firms and OEMs work across multiple vendors though, and Siemens' AI doesn't leave TIA Portal's IDE. PLC Assist gives you one agent across CODESYS, Beckhoff TwinCAT, and TIA Portal, with the same prompts and the same compile-and-fix loop on each.
Looking for Siemens Eigen Engineering Agent itself? It's a fine option if TIA Portal is the only PLC platform you'll ever use.
One agent across CODESYS, Beckhoff TwinCAT, and Siemens TIA Portal — same prompts, same compile-and-fix loop on every platform. Read how the multiplatform agent works.
Frequently asked questions
Is TIA Portal support live yet?
TIA Portal support is in early access for V19 and later. The bridge talks to TIA Portal through Openness, so you'll need a license-eligible Openness install. Sign up for the free trial to get on the early access list and we'll get you set up.
How is this different from Siemens Eigen Engineering Agent or Engineering Copilot TIA?
Eigen Engineering Agent and Engineering Copilot TIA are Siemens products that run inside TIA Portal — only TIA Portal. If your team also works on CODESYS-based PLCs (Schneider, WAGO, Festo, Lenze) or Beckhoff TwinCAT, you need a separate AI tool for each one. PLC Assist is one agent across all three platforms — same prompts, same compile-and-fix workflow, same UI.
Which Siemens PLC families are supported?
Anything you can program in TIA Portal V19+ — S7-1500, S7-1500F (failsafe), S7-1500R/H (redundant), S7-1200, ET 200SP, ET 200SP F, ET 200pro, LOGO!8, and TIA-integrated SIMATIC PCS 7. The bridge connects to TIA Portal itself, not the PLC, so the runtime hardware doesn't change the integration.
Do I need a Siemens Openness license?
Yes. PLC Assist talks to TIA Portal through the Openness API, which requires the TIA Portal Openness add-on. If you already use Openness for any automation tooling (export/import, version control, third-party generators), you're set.
Is my code sent to the cloud?
Your code stays on your machine until the AI needs context. When you send a prompt, only the relevant slice of the project is sent to the model (Anthropic Claude) — not the whole project. We don't store code on our servers; sessions are not used for model training.
AI for Siemens TIA Portal — try PLC Assist free.
25 AI requests, no credit card. Connect to your IDE in 5 minutes.