dj7nt
0ec3bcb8ef
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.
121 lines
3.7 KiB
Markdown
121 lines
3.7 KiB
Markdown
## Usage
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### Installation
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The easiest way this is to run the docker container and set it to restart always. This basically makes it a system service that will always run.
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To make it safe and avoid passing credentials we're using a configuration file.
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```shell
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mkdir /etc/solaredge_modbus_mqtt
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chmod 700 /etc/solaredge_modbus_mqtt
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cp config.yaml-dist /etc/solaredge_modbus_mqtt/config.yaml
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docker run --detach --name=solaredge_modbus_mqtt --restart=always --volume=/etc/solaredge_modbus_mqtt/config.yaml:/app/config.yaml marijnkoesen/solaredge_modbus_mqtt:latest
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```
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### Configuration
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```yaml
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modbus:
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host: 192.168.178.28 # inverter (SunSpec over Modbus TCP)
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port: 1502
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timeout: 1
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unit: 1
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influx:
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url: http://influx.example.com:8086
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db: solaredge
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user: ~ # optional basic-auth user with WRITE on the db
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pass: ~
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measurement: solaredge
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poll_interval: 3
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```
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The daemon polls the inverter and writes one line-protocol point per cycle directly
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to InfluxDB. If InfluxDB is unreachable, points are spooled to `spool.txt` and
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replayed on the next successful write (capped at 20000 lines). Mount a volume for
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`/app/spool.txt` if backlog across container restarts matters.
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`model` and `serialnumber` are written as tags; everything else as fields.
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### Off-grid / fail-over
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- `offgrid` — boolean, true while the inverter runs islanded (off-grid) — vendor event bit
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- `error_code` — inverter vendor error bitmask (0 = none), LCD-style codes
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- `storage_control_mode_text` — e.g. `Backup Only`, `Maximize Self Consumption`
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- `battery1_*` — SOE/SOH, power, voltage, temperatures, status of battery 1
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Register addresses were validated by probing a SE10K-RWB48BFN4 (fw 0004.0025.0011)
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with one battery and one meter. Blocks that fail to read (flaky gateway) are
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skipped for that cycle; the fields are simply absent from the point.
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### Grafana dashboard
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Import `grafana_dashboard.json` (Dashboards -> New -> Import). Select your
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InfluxDB datasource when prompted (e.g. `InfluxDB-HJK`); the `$serial` variable
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is filled from the `serialnumber` tag. InfluxQL only, InfluxDB 1.x.
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The daemon also writes derived flow fields (`house_load`, `pv_power`,
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`grid_import`, `grid_export`, `battery_charge`, `battery_discharge`,
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`solar_to_house`) so the dashboard's consumption-source panels are plain
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`mean()`/`integral()` queries.
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**Sign conventions (verified against the SolarEdge app):** `meter1_power`
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positive = export, `battery1_power` negative = discharge, and `power_ac` is
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the inverter's *total* AC output (PV + battery, DC-coupled Energy Hub) - which
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is why `pv_power = power_ac - battery` and `house_load = power_ac + grid`.
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If a different system disagrees, flip `METER_IMPORT_POSITIVE` /
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`BATTERY_DISCHARGE_POSITIVE` in `solaredge_modbus_mqtt/__init__.py` and
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restart - the derived fields follow.
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### Uninstall
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```shell
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docker update --restart=no solaredge_modbus_mqtt
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docker stop solaredge_modbus_mqtt
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```
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### Update
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```shell
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docker update --restart=no solaredge_modbus_mqtt
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docker stop solaredge_modbus_mqtt
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docker rm solaredge_modbus_mqtt
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docker run --detach --name=solaredge_modbus_mqtt --restart=always --volume=/etc/solaredge_modbus_mqtt/config.yaml:/app/config.yaml marijnkoesen/solaredge_modbus_mqtt:latest
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```
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## For developers
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### Building and running the docker image
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```shell
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docker build -t solaredge_modbus_mqtt:latest .
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or
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docker buildx build --platform linux/amd64 solaredge_modbus_mqtt:latest .
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cp config.yaml-dist config.yaml
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docker run --volume=$PWD/config.yaml:/app/config.yaml solaredge_modbus_mqtt:latest
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```
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### Running without docker
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```shell
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pip3 install -r requirements.txt
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cp config.yaml-dist config.yaml
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python3 solaredge_modbus_mqtt.py
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```
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### Running tests
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```shell
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pip3 install -r requirements.txt
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python3 -m unittest
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```
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