ModbusMQTT

ModbusMQTT fakes the shinemonitor.com modbus server. It queries the WiFi-RTU periodically and sends the gathered data to your MQTT-broker.

This software was created to harvest data from the Deye SUN-ECD and send it to your MQTT-broker, instead sending your best data to China/Singapore. https://www.aliexpress.com/item/32872867730.html

Change Log

Modified MQTT messages to conform to Home Assistant, placed Home Assistant Configuration in.

Plans

Rewrite to support more devices. It is at this point a single purpose solution. See todolist below

Setup

sudo su -
git clone https://github.com/damienheiser/modbusmqtt
cd modbusmqtt

Update your settings and save

Install dependencies service

make

Install it as a service

make install

Set your configuration (restart the service when your done editing)

vim /etc/modbusmqtt/modbusmqtt.conf

Set the following topic prefix for Home Assistant (unless configured differently in your HA config)

topic = homeassistant/solarinverter

Service

service modbusmqtt [start|stop|restart|status]

In your router point www.shinemonitor.com to the IP of your new modbus server.

192.168.1.10 www.shinemonitor.com
192.168.1.10 singapore.shinemonitor.com

MQTT

At this point just the status of the (micro)inverters is implemented.

State topic:

<your_topic>/<inverter_id:int>/state

returns the operation mode:

• 2 Normal
• 4 Fault

Attributes topic:

<your_topic>/<inverter_id:int>/attr

returns

{
  "device": "123456789"
  "rated_power": 1300,
  "mppt_channels": 4,
  "phase": 1,
  "max_threshold_grid_voltage": 265,
  "min_threshold_grid_voltage": 185,
  "max_threshold_grid_frequency": 62,
  "min_threshold_grid_frequency": 47.5,
  "state": 2,
  "today_energy": 0.4,
  "total_reactive_energy": 0,
  "today_grid_connect_time": 0,
  "total_energy": 1884.8,
  "grid_voltage_A": 227,
  "grid_voltage_B": 0,
  "grid_voltage_C": 0,
  "grid_current_A": 0,
  "grid_current_B": 0,
  "grid_current_C": 0,
  "grid_frequency": 50,
  "output_power": 198,
  "radiator_mode_1_temperature": 17.4,
  "radiator_mode_2_temperature": -10,
  "inductor_temperature_1": -10,
  "inductor_temperature_2": -10,
  "DC_voltage_1": 28.8,
  "DC_current_1": 1.7,
  "DC_voltage_2": 29,
  "DC_current_2": 1.7,
  "DC_voltage_3": 28.5,
  "DC_current_3": 1.6,
  "DC_voltage_4": 29,
  "DC_current_4": 1.7
}

Todo

• device.py should be rewritten to a more general device interface
• device name should be part off the mqtt topic
• device definition should allow mqtt topic templating
• load devices on init
• the instance of a device should handle commands
• device unpack_string should check for allowable chars
• device slice_data add other ctypes

License

Free to use, modify, distribute, what ever you want. I cannot be held responsible for any problems, damages, etc.