docs(plc): soft-PLC architecture + CODESYS/Yocto lifecycle diagram #184

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sharang merged 1 commits from docs/plc-soft-plc-architecture into main 2026-07-16 22:00:18 +00:00
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Sharang ParnerkarandClaude Opus 4.8 c1e0a80f90 docs(plc): add soft-PLC architecture + CODESYS/Yocto lifecycle diagram
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A CODESYS controller is not a monolithic appliance — it's a SoC + Linux +
software runtime + control app, built along two independent tracks (the Yocto
device platform by the OEM, the IEC 61131-3 control application by the machine
builder). Add an "Anatomy" section to the PLC guide: the classic-vs-soft-PLC
table, a Mermaid diagram of the two development tracks converging on the running
device with the artifact→scan mapping, and a callout on where Yocto fits (the
firmware layer, its own artifact). Explains why PlcSps is a composite target.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-16 23:52:47 +02:00