python solution for connecting the Heidelberg-EnergyControl Wallbox via ModbusRTU

• Prerecquisites
• Usage
• License
• Helpful Links

1. For the use of this python code it is necessary to install the python libs pymodbus and pyserial:

python3 -m pip install pymodbus
python3 -m pip install pyserial

Remark: for pymodbus use minimum the version of 3.6.x Remark: for pymodbus use minimum the version of 3.6.x

Check the python code in the script HD_EnergyControl_ModbusRTU.py.
Change the following line according to your serial device.

obj = HD_EnergyControl("/dev/ttyAMA0", 1)

The HD_EngeryControl constructor takes two arguments:

• port - where the wall box is connected to (default "/dev/ttyAMA0")
• UnitID - the unit id in the bus (default 1)

Then you can check the communucation via:

python3 HD_EnergyControl_ModbusRTU.py

This library is licensed under MIT Licence.

• ESP8266-01-Adapter