The battery register reads negative on discharge (raw since day
one), but the tile label promised '+ Entladen / - Laden'. Flip the
three raw battery1_power/current queries with * -1 so positive
means power flowing into the house - the same mental model as the
grid tile (+ Bezug). Full history renders consistently; surplus
panels already use the correctly-signed derived fields.
Verified against simultaneous SolarEdge app readings (PV 40 W,
battery discharge 520 W, house 560 W): battery1_power negative
means discharge, and power_ac on this DC-coupled Energy Hub is
the inverter's TOTAL AC output - it already contains the battery
contribution. The old formula double-counted the battery, so
house_load collapsed (44 W shown vs 560 W real) and the PV tile
showed battery-inflated totals, which looked like PV and house
consumption were swapped.
New derived fields: house_load = power_ac + grid, and
pv_power = power_ac - battery (true PV production). Dashboard PV
tiles and both yield panels now use pv_power / integral(pv_power)
- the energy_total lifetime counter also counts battery
throughput and is not a PV yield.
Short or garbled gateway responses are rejected on register count
instead of half-decoding (previously: 'unpack requires a buffer',
OverflowError on garbage scale factors). Scale factors outside
+/-10 and non-finite floats are dropped before they reach line
protocol.
offgrid is written as integer offgrid_state: the existing DB
cannot be migrated (mixed inmem/tsi1 shards block all deletes)
and the old boolean field conflicts with integer writes, which
poisoned the spool - HTTP 400 now drops the batch and logs the
InfluxDB error body instead of re-spooling it forever.
grafana_dashboard.json: fully German dashboard (InfluxQL,
InfluxDB 1.x) with off-grid state, SoC (SoE*SoH/100) and
consumption-source panels; status tiles use integers plus value
mappings because Grafana drops string/boolean fields from
InfluxQL time series.
dj7nt