Rungbase
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Write the rung.
Watch the line run.

One engineering workspace for controls teams. Write Ladder and Structured Text, run it against a simulated 3D machine, and review every change together before anyone travels to site.

Request a demo Explore the workspace

The project moves on.
The context stays with it.

From the first logic change to commissioning, keep the source, tests, and engineering record in the project your team shares.

01

Develop in a shared project

Import L5X or L5K, edit routines and tags in the browser, and invite your engineers. Keep project documentation beside the source it explains.

Explore the engineering workspace
The Ladder editor with saved logic for a packaging line's line enable, accumulation conveyor and palletizing sequence.
Actual Ladder editor · synthetic packaging project
02

Leave a test others can rerun

Connect modeled devices to your PLC tags, step through supported logic, and follow device feedback in local 3D simulation. Save the scenario and its results so the next engineer can repeat the checks.

See Machine & simulation
The Machine workspace showing three packaging lanes, palletizing cells, control cabinets and pallet staging inside a modeled warehouse.
Actual Machine workspace · authored scene, not a live line
03

Hand over more than a PLC file

Compare saved revisions, record commissioning checks, attach evidence, and track punch-list items. Give the next engineer a record of what changed and what still needs attention.

See team projects & handoff
Lane_A rung 002 compared between Rev 01 Initial timing and Rev 02 Carton settling: the TON preset changes from 2000 to 2500 ms, with a comment explaining the extra settling time.
Saved revisions · 2000 → 2500 ms, with the reason recorded

Pick up unfamiliar logic.
Ask about the actual source.

Agent reads saved project source to explain a rung or propose an edit. Use it to work through a project you’ve inherited, with every proposed change open for review.

Lane_A open beside an unaccepted Agent proposal to add a five-second photoeye jam alarm, with proposed tags and Ladder logic available for review and Apply to project draft and Decline proposal controls.
Actual Agent response · unedited and awaiting review · editor and review shown side by side

Explain the selected logic

Select a rung and ask what it does. Agent uses that saved source, so you don’t have to paste the routine into a separate chat.

Turn a request into a diff

Ask for a routine, tag changes, or project documentation. Inspect the proposed edits before accepting them into your offline draft.

Test the change yourself

Use local simulation and saved test scenarios to check supported behavior. Rungbase does not connect to or write to physical controllers.

Offline by design.

Rungbase never connects to or writes to a physical controller, and nothing downloads on its own. Agent proposals stay proposals until an engineer reviews the diff and accepts it.

Common questions.

Have a workflow you’d like to discuss?

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How does my team share a project?

Projects belong to your organization. Invite engineers so they can access the saved project source, documentation, tests, and commissioning records in their browsers. Simulation sessions run locally in each engineer’s browser.

Does Rungbase replace our vendor programming software?

Rungbase brings supported offline PLC editing, local simulation, engineering tests, and project records into one workspace. You still need vendor tools for hardware connections, controller downloads, and vendor-specific validation. Check the current capabilities against your project.

What can I do in Rungbase today?

Create projects, import L5X or L5K controller sources, edit supported logic, run local simulations and engineering tests, build a 3D machine, and keep commissioning records. Explore the current capabilities.

Does Rungbase connect to a physical controller?

The current workspace is for offline engineering. Local simulation runs in your browser. Live controller connections and controller downloads are not available.

Can I bring an existing Logix project?

You can import complete L5X and L5K controller sources and supported partial L5X components. Original artifacts and unsupported vendor content are preserved. Importing a source does not guarantee complete vendor or firmware compatibility.

How do Agent changes get saved?

Agent prepares a proposed change using saved project context. You review the diff and confirm it before the offline draft is updated. Saved revisions and local simulation state remain separate.

How do I get started?

Create an account, then create an organization and a project. Start a blank controller or import an L5X or L5K file. To walk through a specific project with us, request a walkthrough.