Multiplatform AI for PLC programming
PLC Assist is one AI coding agent that works across PLC platforms — CODESYS-based PLCs and Beckhoff TwinCAT today, Siemens TIA Portal and Allen Bradley Studio 5000 next. Same prompts, same workflow, same agent — every IDE.
The agent doesn't hand you generated code to copy-paste. It writes POUs, methods, and GVLs directly into your running PLC project, compiles them in your IDE, reads the actual error messages, and fixes them autonomously. That loop runs identically on CODESYS and TwinCAT today, and on every supported platform as bridges land.
If your shop uses one PLC vendor, plenty of single-platform AI tools work fine. If your shop uses two or more — system integrators, OEMs porting machines across vendors, engineering services firms supporting mixed estates — one agent that lives inside every IDE you touch is a different proposition.
Who needs cross-platform AI for PLC?
- System integrators — customer A runs Schneider, customer B runs Beckhoff, customer C runs Siemens. Three vendor copilots = three subscriptions, three workflows, three different prompt habits.
- OEMs and machine builders — different end-customers spec different PLC platforms. You're not the one choosing the PLC; you're the one porting the same machine code to all of them.
- Engineering services firms — you support legacy CODESYS projects from 5 years ago, ship new TwinCAT projects today, and your next contract is on a TIA Portal site. The AI tool can't be locked to one of those.
- Multi-site manufacturers — a single company often inherits multiple PLC platforms through acquisitions or regional procurement. One AI agent across all of them keeps standards consistent.
How PLC Assist works across platforms
The agent runs in the cloud and talks to your PLC IDE through a lightweight local bridge — a small program that runs on your engineering workstation and exposes the IDE's project to the agent.
- CODESYS bridge — a Python script that runs inside CODESYS via the official scripting API. Works with all CODESYS V3 derivatives: Schneider EcoStruxure Machine Expert, WAGO e!COCKPIT, Festo Automation Suite, Lenze EASY Builder, Bosch Rexroth ctrlX WORKS, and more.
- Beckhoff bridge — a standalone .NET app that talks to TwinCAT via COM interop. Reads NestedProject items, writes ST/methods/actions directly into your TwinCAT solution.
- Siemens TIA Portal bridge — in development — uses the TIA Openness API. Same agent, same prompts.
- Allen Bradley bridge — in development — connects to Studio 5000 Logix Designer.
The agent is built on Anthropic's Claude — the same models behind Claude Code — and is the same across all platforms. Only the bridge changes.
What the agent does inside your IDE
- Writes code directly into your project. Function blocks, methods, actions, properties, GVLs, DUTs, interfaces — created live in your CODESYS or TwinCAT project tree. No copy-paste, no file imports, no L5X exports.
- Compiles in your real PLC IDE. The agent triggers your IDE's actual compiler — not a simulated check — so the errors you see are the errors your controller would see at runtime.
- Reads compile errors and fixes them on its own. When the compiler reports a type mismatch or undeclared variable, the agent reads the diagnostic, locates the offending code, and patches it. The loop repeats until the project compiles clean.
- Stays consistent across CODESYS, TwinCAT, and TIA Portal. Same prompt vocabulary, same agent behavior, same review flow. Engineers who switch projects don't have to relearn the tool for each platform.
Frequently asked questions
Can one AI tool work across multiple PLC platforms?
Yes — PLC Assist runs across CODESYS-based PLCs and Beckhoff TwinCAT today, with Siemens TIA Portal and Allen Bradley Studio 5000 in development. Same prompts, same workflow, same agent — only the bridge into each IDE changes.
Does PLC Assist actually edit my project, or just generate code I copy-paste?
It edits your project. The agent writes function blocks, methods, GVLs, and DUTs directly into your CODESYS or TwinCAT project tree, then compiles them in your IDE and reads the actual error messages. If something doesn't compile, the agent fixes it on its own and recompiles — no copy-paste, no L5X import/export, no manual deployment step.
Who actually needs cross-platform PLC AI?
System integrators serving multiple end-customers, OEMs and machine builders shipping the same machine on different PLC platforms, engineering services firms supporting legacy and new projects across vendors, and multi-site manufacturers that have inherited mixed PLC fleets through acquisitions.
Does PLC Assist work the same on every platform?
Yes. The agent is identical — same Claude models, same prompting, same compile-and-fix loop. Only the local bridge changes per IDE. Engineers switching between CODESYS and TwinCAT projects don't have to learn two different AI tools.
One AI agent, every PLC IDE you use.
25 AI requests free, no credit card. Works with CODESYS and TwinCAT today.