Our product · LADX

LADX, the AI workbench for automation engineers

LADX is the Wartens group's software for the people who program machines. Draw ladder logic and run it, ask for logic and get code a real IEC 61131-3 compiler has already accepted, then convert it, build the operator screens, draw the panel and produce the project documents, all on one project. It is vendor-neutral, and it can run offline.

Write a PLC program in your browser Try the editor free

In short

LADX is the Wartens group's AI workbench for automation engineers: a free browser ladder editor and PLC simulator, AI that only shows logic a real IEC 61131-3 compiler has accepted, conversion to Siemens SCL, Rockwell neutral text, Structured Text and PLCopen XML, an HMI/SCADA builder, panel CAD and 17 project document templates. It is vendor-neutral and can run offline.

Try it here

Write a PLC program in your browser

This is the real LADX ladder editor, running here from ladx.ai. Add contacts and coils from the instruction bar, create tags, press Simulate and watch each rung conduct, then compile or download your program. No account is needed.

LADX ladder editor with instruction bar, project tree, network canvas, I/O and tags, and messages

Loads the editor from ladx.ai, the Wartens group's own platform. LADX shows its own short storage notice.

The ladder editor is built for a larger screen. Tap to open it on ladx.ai.

Tip: press F inside the editor for focus mode. To keep your program between visits, allow storage in the LADX notice or open the full editor.

Open the full LADX editor

LADX CAD

Draw control panels and schematics

Below is LADX CAD, the free drafting board for control panel and electrical drawings. Start from a working sheet in the library (cover, power distribution, PLC cards, safety, panel layout), draw with typed commands and object snap, then export DXF, SVG or PDF.

LADX CAD drawing board with draw, modify and annotate tools, sheets panel, properties and the sheet library

Loads the editor from ladx.ai, the Wartens group's own platform. LADX shows its own short storage notice.

LADX CAD is built for a larger screen. Tap to open it on ladx.ai.

CAD exports DXF, so nothing you draw is locked in. A free account keeps drawings with your PLC program and project documents.

Open LADX CAD in full

How the AI works

Nothing reaches you until a compiler agrees it exists

General AI assistants write plausible PLC code. Plausible is not the bar when the code runs a machine, so LADX treats generation as a loop rather than a single answer.

Generate

You describe what the machine should do. The model you connect (a free OpenRouter model, Anthropic, OpenAI or a local Ollama model) writes the rungs.

Compile

The result is compiled with matiec, the open IEC 61131-3 compiler. If it does not build, you never see it.

Check

iec-checker static analysis and a PLCopen schema pass confirm the structure is valid, not only the syntax.

Repair

Failures go back to the model with the compiler's own errors attached, and it tries again. What lands on the canvas has already been checked.

Ten tools, one project

Everything a control system job produces, in one place

The rung you draw is the rung the AI edits, the rung that converts to another platform, the rung Monitor runs and the rung described in the functional specification. Change the client name once and it lands on every drawing and document.

LADX LadderDraw a rung, press run, watch it conductA browser ladder editor with a scan-accurate simulator: an output image, edge memory per instruction and timers counted in milliseconds. No account and no install.Open

LADX ChatAsk for logic, get logic that compilesDescribe the machine behaviour and the rungs appear on the canvas, already compiled and checked.Open

LADX ConvertBetween platforms and languagesWrite a program out as IEC 61131-3 Structured Text, Siemens SCL, Rockwell neutral text or PLCopen XML, with a report of anything that needs a person to check.Open

LADX HMI/SCADAOperator screens on the same tagsScreens bind to the ladder program's own tag table, with 87 symbols and alarms defined to ISA-18.2. The simulator's scan engine drives the screen.Open

LADX CADPanel drawings on the same projectTwo-dimensional electrical and panel drafting that opens on a finished drawing set, with eleven templates and DXF export.Open

LADX DocumentsThe paperwork a project actually producesSeventeen working templates, from URS and FDS to FAT, SAT and the handover pack, filled from your project.Open

LADX MonitorRun the logic and watch it moveRun any saved program at scan speed, force inputs and watch every tag change: a bench test before anyone books the panel shop.Open

LADX KnowledgeYour manuals, answering questionsAsk questions of drive manuals, machine specifications and site standards, with the document and page behind every answer.Open

LADX PlannerEvery project on one timelineA Gantt chart seeded from the deliverables each job owes, with dependencies the chart enforces.Open

LADX ProjectsThe job around the codeDesign basis, drawings, programs and documents in one project that knows its lifecycle phase, from requirements to support.Open

Free, no account

Free PLC, CAD and SCADA tools in the browser

No sign-up, no installer, no trial period and nothing that expires. An account only adds somewhere central to keep your work.

Built for real plants

Your code stays yours

Vendor-neutralSiemens, Rockwell, Beckhoff and CODESYS on one workbench, for engineers who touch several platforms in the same week.
Never used for trainingPrograms are encrypted at rest, scoped to your project and deletable in one action. AI requests go only to the provider whose key you connect.
Runs offlineLADX Studio for macOS and Windows runs the editor, simulator, CAD, HMI builder, Convert and documents on your own machine with a local model.
No writes to live controllersLADX does not download to a running PLC. You still compile and download in the vendor tool, after review.

Who it is for

For the people who program machines

System integrators

One workbench across every client's platform, with the documents and drawings on the same project.

Maintenance and controls teams

Check logic, test changes on the bench and find the answer in the manual before the line stops.

Students and apprentices

Learn ladder logic on a simulator that behaves like a real PLC, free and without a licence.

See all LADX tools Download LADX Studio

LADX questions

LADX is the Wartens group's AI workbench for automation engineers. It brings a ladder editor and simulator, compile-checked AI, conversion between PLC platforms, an HMI/SCADA builder, panel CAD, project documents, a planner and a manuals assistant onto one project. It is vendor-neutral and can run offline.

The browser ladder editor and simulator, the converter, the HMI/SCADA builder, the CAD tool, the 17 document templates and the forum are free with no account and no trial period. An account adds a central place to keep projects. The AI uses the provider key you connect, and free OpenRouter models work.

It can if something checks it first. LADX compiles every generated answer with the matiec IEC 61131-3 compiler and checks it with iec-checker and a PLCopen schema pass. Failures go back to the model with the compiler's errors, so what you see has already passed.

LADX writes programs out as Siemens SCL, Rockwell neutral text, IEC 61131-3 Structured Text and PLCopen XML. You then import, compile and download in the vendor tool. Reading vendor projects back into LADX is still being built.

No. Programs are encrypted at rest, scoped to your project, never used for training and deletable in one action. The desktop build, LADX Studio, runs a local model and makes no outbound AI call.

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