Domoticz SDM120c ModbusTCP plugin

A Domoticz plugin to collect data from SDM120c power meter ModbusTCP.

Requirements

You need the SDM120C to be connected over modbus over TCP. Wired or wireless. Setup that use this on this plugin is using PW21

You need also to find the address of the SDM120C. You can find it using the push button. Per default the address is 1.

Installation of the plugin

This guide is based on Ubuntu 20.04 LTS:

Install pip3:

sudo apt install python3-pip

Install domoticz:

curl -sSL install.domoticz.com | sudo bash

Make sure that the plugins folder exists in the domoticz folder.

Install the plugin:

cd domoticz/plugins
git clone https://github.com/xbeaudouin/domoticz-sdm120c-modbus-tcp.git

Go to the plugin folder and install all required addons:

cd domoticz/plugins/domoticz-sdm120c-modbus-tcp
sudo pip3 install -r requirements.txt

Once that is done, restart domoticz:

sudo service domoticz.sh restart

Configuration in Domoticz

Once the plugin is installed, a new hardware type will be available: SDM120c ModbusTCP.

To add the inverter, go to Setup -> Hardware and add the counter:

• Enter a name for the counter.
• Select SDM120c ModbusTCP from the type dropdown list.
• Enter the IP address of the PW21 in the IP Address field.
• Enter the port number (default: 502) of the PW21 in the Port Number field.
• Optionally turn on Debug; be aware: this will generate a lot of entries in the Domoticz log!
• Add the counter.

This should result in a lot of new devices in the Setup -> Devices menu.

Updating the plugin

Go to the plugin folder and get the new verion:

cd domoticz/plugins/domoticz-sdm120c-modbus-tcp
git pull

Once that is done, restart domoticz:

sudo service domoticz.sh restart

ScreenShots

TODO

Documentation about the registers used.

TODO