0.7.0 is the biggest ladder release since the editor shipped, and most of the changes bring Rungs Studio a step closer to Studio 5000 Logix Designer®. You can edit tag defaults straight from the rung, use math inside array indexes, print a full AOI from the toolbar, and arithmetic now matches what a real Logix controller would do.

Ladder Logic was always planned as the main language at rungs.dev (hence the name). It wasn't my first choice for the MVP because building such an editor takes a lot of effort, and Monaco is readily available. Structured Text was a reasonable choice to ship quickly.

rungs.dev is a tool we're building to make PLC programming easier, especially for people who write AOIs (Add-On Instructions), teach automation, or just want to test and share logic without hardware or expensive licenses. It's early in development - most features are still missing - but the core idea is simple: isolate logic, test it fast, and document it automatically.