YAU.POC/wrps-demo-kit
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Clio Liu 55279ca78f docs(plc): as-built copy, versions, and a getting-started guide 
Adds what the folder was missing for someone picking it up cold.

as-built/  the STruC++ output copied out of the live container - the C++
           the PLC is actually executing, plus program.st and the Modbus
           buffer config. The running image was made with docker commit
           and exists in no registry, so this is the only other copy of
           the compiled form.

           Verified while copying: the deployed program.st matches
           build/wrps.st generated from src/. Identical POU structure,
           ZERO differences in non-declaration lines. src/ is genuinely
           canonical and the running PLC agrees with it.

VERSIONS.md         every version read from the running system, not from
                    documentation: runtime v4.1.10, STruC++ 0.6.2, Editor
                    4.2.11, Debian 12, g++ 12.2, pymodbus 3.11.2, CI
                    Server R1.03. Plus which plugins are enabled -
                    ethercat is on for no reason - and a v3-vs-v4 table,
                    since most OpenPLC guidance online is for v3 and the
                    %MW HR1024 change silently produces wrong data.

GETTING-STARTED.md  three questions answered in a page: how to modify the
                    program, how to stand up a new PLC container from
                    scratch, how to move this one. Includes the compose
                    file, the Editor steps that are not generated and are
                    always missed, and a symptom-to-document table.
2026-09-02 16:48:30 +10:00
01-design docs(design): design set, with its origin and the method that made it 2026-09-02 15:25:54 +10:00
03-plc docs(plc): as-built copy, versions, and a getting-started guide 2026-09-02 16:48:30 +10:00
99-reference chore: preserve reference files byte-for-byte 2026-09-02 15:17:49 +10:00
.gitattributes chore: preserve reference files byte-for-byte 2026-09-02 15:17:49 +10:00
.gitignore feat(plc): ST sources, generators and the Modbus contract 2026-09-02 15:48:49 +10:00
README.md chore: initialise wrps-demo-kit 2026-09-02 15:07:31 +10:00

README.md

wrps-demo-kit

A kit for building demo automation use cases on Yokogawa CI Server (SCADA) and OpenPLC Runtime (soft PLC, in Docker) — with the Waterloo Road Pump Station (WRPS) demo as its first worked example.

Note

This repository is being assembled. It is the successor to an earlier working repo, and material is being reviewed and moved across one folder at a time. Sections not yet present have not yet been audited.

The two systems

Role Host Address
SCADA — Yokogawa CI Server yau-poc-cicore1 10.0.0.21
PLC — OpenPLC Runtime container yau-sls-poc-lin001 10.0.0.17

Architecture invariant: OpenPLC Runtime is the Modbus TCP server (slave) on port 502. CI Server is the Modbus client (master) and polls it. The register map is the contract between the two sides.

Layout

To be filled in as each part is brought across.

Assembled from the WRPS working repo, 2026-09.