From e95f9b89f15e3d4e8b144d8bad8d1b0a54331905 Mon Sep 17 00:00:00 2001 From: Mariusz Pacek Date: Sat, 24 Oct 2026 05:33:18 +0200 Subject: [PATCH] =?UTF-8?q?docs(energy):=20record=20the=20SDM630=20power?= =?UTF-8?q?=20sign,=20+=20import=20/=20=E2=88=92=20export?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The backend's grid history uses PRAD2 while the live tile uses Deye; a review asked whether both use the same sign. They do. Co-Authored-By: Claude Opus 5.5 --- research/energy/README.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/research/energy/README.md b/research/energy/README.md index e2aadf4..beaf498 100644 --- a/research/energy/README.md +++ b/research/energy/README.md @@ -34,6 +34,10 @@ runs on PV and the grid, so a full battery with ~0 W flow is the normal state. Fronius Symo 3.7 (`192.168.0.143`, Solar API JSON) produced another 4.4 kWh that day. +House meter SDM630 (`electricity.PRAD2`): `total_power_active` is **+ import / − export**, like the +Deye grid registers. Checked 2026-10-23 in InfluxDB: −2.5 to −5.5 kW between 11:00 and 15:00 local +while PV exported, +645 W at night matching Deye's 640 W import. + Considered and rejected (2026-10-23): pointing the logger's second server ("Server B") at our backend. Push frames are poorly documented binary data every ~5 min, need a TCP server with acks, and a wrong setting could cut off the Solarman cloud my father uses. Local FC3 polling