This software module connects a E3/DC S10 home power station with a MQTT broker. It uses the Modbus interface of the S10 device.
Developed and tested with a Raspberry Pi.
The tool s10m queries the data from the home power station and sends it to the MQTT broker. The following topics are supported:
- s10/autarky
- s10/consumption
- s10/battery/charging/limit
- s10/battery/charging/lock
- s10/battery/discharging/lock
- s10/emergency/ready
- s10/grid/limit
- s10/battery/soc
- s10/battery/power
- s10/battery/state
- s10/emergency/mode
- s10/firmware
- s10/grid/power
- s10/grid/state
- s10/grid/power/L1
- s10/grid/power/L2
- s10/grid/power/L3
- s10/home/power
- s10/manufacturer
- s10/model
- s10/serial_number
- s10/solar/power
- s10/string_1/current
- s10/string_2/current
- s10/string_1/power
- s10/string_2/power
- s10/string_1/voltage
- s10/string_2/voltage
Only modified values will be published.
- S10 configuration: Switch on the Modbus interface (mode E3/DC, not Sunspec)
- An existing MQTT broker in your environment, e.g. a Mosquitto (https://mosquitto.org)
- s10m needs the library libmosquitto. To install it on a Raspberry Pi enter:
sudo apt-get install libmosquitto-dev
- s10m connects the S10 via the Modbus protocol, so you have to install a Modbus library:
git clone https://github.com/stephane/libmodbus.git
cd libmodbus/
sudo apt-get install libtool # when autogen or configure fail
./autogen.sh
./configure
sudo make install
sudo apt-get install git # if necessary
git clone https://github.com/pvtom/s10m.git
Please check the configuration values in the source code file s10m.h and adjust them to your needs.
// Host name of the E3/DC S10 device
MODBUS_HOST=e3dc
// Port of the E3/DC S10 device, default is 502
MODBUS_PORT=502
// Target MQTT broker
MQTT_HOST=localhost
// Default port is 1883
MQTT_PORT=1883
// MQTT parameters
MQTT_QOS=0
MQTT_RETAIN=false
// Interval requesting the E3/DC S10 device in seconds
POLL_INTERVAL=1
cd s10m
make
IMPORTENT: Make shure the configuration is correct for you.
docker build -t <image-name> .
sudo mkdir -p /opt/s10m
sudo chown pi:pi /opt/s10m/
Adjust user and group (pi:pi) if you use another user.
cp -a s10m /opt/s10m
Start the program:
./s10m
If everything works properly, you get output like this:
Connecting...
E3DC system e3dc:502 (Modbus)
MQTT broker localhost:1883 qos = 0 retain = false
Fetching data every second.
Connecting to MQTT broker localhost:1883
MQTT: Connected successfully
E3DC_MODBUS: Connected successfully
MQTT: publish topic >s10/autarky< payload >100<
MQTT: publish topic >s10/consumption< payload >15<
MQTT: publish topic >s10/battery/charging/limit< payload >0<
MQTT: publish topic >s10/battery/charging/lock< payload >0<
MQTT: publish topic >s10/battery/discharging/lock< payload >0<
MQTT: publish topic >s10/emergency/ready< payload >1<
MQTT: publish topic >s10/grid/limit< payload >0<
MQTT: publish topic >s10/battery/soc< payload >60<
MQTT: publish topic >s10/battery/power< payload >4503<
MQTT: publish topic >s10/battery/state< payload >CHARGING<
MQTT: publish topic >s10/emergency/mode< payload >INACTIVE<
MQTT: publish topic >s10/firmware< payload >S10_2022_026<
MQTT: publish topic >s10/grid/power< payload >-3189<
MQTT: publish topic >s10/grid/state< payload >IN<
MQTT: publish topic >s10/grid/power/L1< payload >-1104<
MQTT: publish topic >s10/grid/power/L2< payload >-924<
MQTT: publish topic >s10/grid/power/L3< payload >-1161<
MQTT: publish topic >s10/home/power< payload >904<
MQTT: publish topic >s10/manufacturer< payload >HagerEnergy GmbH<
MQTT: publish topic >s10/model< payload >S10 E AIO<
MQTT: publish topic >s10/serial_number< payload >S10-XXXXXXXXXXXX<
MQTT: publish topic >s10/solar/power< payload >8596<
MQTT: publish topic >s10/string_1/current< payload >9.20<
MQTT: publish topic >s10/string_2/current< payload >9.36<
MQTT: publish topic >s10/string_1/power< payload >4434<
MQTT: publish topic >s10/string_2/power< payload >4162<
MQTT: publish topic >s10/string_1/voltage< payload >481<
MQTT: publish topic >s10/string_2/voltage< payload >443<
...
Check the configuration if the connections are not established.
If you use the Mosquitto tools you can subscribe the topics with
mosquitto_sub -h localhost -p 1883 -t 's10/#' -v
Stop s10m with Crtl-C and start it in the background.
Start the program in daemon mode:
./s10m -d
If you like to start s10m during the system start, use /etc/rc.local. Add the following line before exit 0.
(cd /opt/s10m ; /usr/bin/sudo -H -u pi /opt/s10m/s10m -d)
Adjust the user (pi) if you use another user.
The daemon can be terminated with
pkill s10m
Be careful that the program runs only once.
- Eclipse Mosquitto (https://github.com/eclipse/mosquitto)
- Modbus library (https://github.com/stephane/libmodbus)