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@@ -23,7 +23,7 @@ which response belongs to which request.
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| File | Purpose |
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|------|---------|
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| `must_pv1800_monitor.py` | The monitor script. Self-contained — embeds the pyserial-based TCP proxy it runs on the remote host, plus the full PV1800 register map. |
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-| `docs/register-map.md` | The PV1800 register map, derived from `taHC81/MUST-ESPhome/PH1800 PV1800 EP1800 PV3500 EP3500 RS485 Modbus RTU communication Protocol 1.4.15.xlsx`. |
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+| `docs/register-map.md` | The PV1800 register map, cross-checked against the manufacturer protocol doc. |
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| `docs/quirks.md` | Things I learned the hard way about the PV1800 firmware and the CH340 driver. Read this before debugging "why isn't it working". |
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| `tools/test_proxy.py` | A standalone copy of the TCP<->serial proxy, useful for ad-hoc debugging with `nc` or `socat`. |
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@@ -213,6 +213,7 @@ Example snapshot (panels disconnected, inverter in ByPass mode feeding a
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register map in action.
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- `PH1800 PV1800 EP1800 PV3500 EP3500 RS485 Modbus RTU communication
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Protocol 1.4.15.xlsx` (in the same repo) — the authoritative register map
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+- `docs/protocol/` — raw manufacturer protocol document (XLSX), a CSV extraction, and a Markdown rendering; the XLSX is the canonical source for register definitions
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for the inverter family. Parsed copy in `docs/register-map.md`.
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## Caveats / known issues
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