LLM agent writes PLC ladder logic offline for under 100K tokens: industrial automation meets coding agents
Many_Somewhere3863 · reddit · 2026-11-06
A Redditor demos an LLM agent for industrial automation that writes PLC ladder logic directly, supports CSV import, uses no proprietary file formats, and consumes under 100K tokens per task. It ships with guardrails and linting to avoid basic mistakes, and runs fully offline—refusing to write when the PLC is online—with final checks left to the engineer. UI is Indonesian-only for now. Frontier models perform strikingly well; Chinese models are reportedly decent too. The poster argues it won't replace PLC engineers but is a big productivity boost, and notes the PLC subreddit mods deleted the post for being AI content.
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