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Python client for Solarfocus eco^{manager-touch} via Modbus TCP

Python client library to interact with heating systems of Solarfocus (eco^{manager-touch}) via Modbus TCP. This library has been developed for the integration into Home-Assistant via a custom integration, but can be used indepdently.

Warning Use with caution, in case of doubt check with Solarfocus or your installer if a feature / functionality (e.g. cooling) is supported by your installation to avoid damages to your heating system or the building.

Important This integration has been tested with Solarfocus eco^{manager-touch} version 23.020.

Supported versions: 21.140 - 23.020. Features added in later versions are not yet supported.

The eco^{manager-touch} Modbus TCP specification can be found here.

The eco^{manager-touch} can integrate the following heating systems

• Vamp^air heat pumps
• Thermin^nator biomass boilers
• Ecotop^light / Ecotop^zero biomass boilers
• Octo^plus biomass boilers
• Pellet^top biomass boilers

$ pip3 install pysolarfocus

from pysolarfocus import SolarfocusAPI,Systems,ApiVersions

# Create the Solarfocus API client
solarfocus = SolarfocusAPI(
    ip="solarfocus",                    # adapt IP-Address 
    system=Systems.VAMPAIR,             # for biomass boiler change to Systems.THERMINATOR / ECOTOP 
    api_version=ApiVersions.V_23_020)   # select Solarfocus version

solarfocus.connect()
# Fetch the values
solarfocus.update()

# Print the values
print(solarfocus)
print(solarfocus.heating_circuits[0])

Output:

--------------------------------------------------
SolarfocusAPI, v3.6.4
--------------------------------------------------
+ API Version: 23.020
+ System: Vampair
+ Components:
  + Heat pump: True
  + Biomass boiler: False
  + Heating circuit: 1
  + Buffer: 1
  + Boiler: 1
  + Fresh water module: 1
  + Solar: False
  + Photovoltaic: False
--------------------------------------------------


============
HeatingCircuit
============
---Input:
supply_temperature| raw:258 scaled:25.8
room_temperature| raw:222 scaled:22.2
humidity| raw:480 scaled:48.0
limit_thermostat| raw:1 scaled:1
circulator_pump| raw:1 scaled:1
mixer_valve| raw:34 scaled:34
state| raw:12 scaled:12
---Holding:
target_supply_temperature | raw:0 scaled:0.0
cooling | raw:0 scaled:0
mode | raw:0 scaled:0
target_room_temperatur | raw:0 scaled:0.0
indoor_temperatur_external | raw:222 scaled:22.2
indoor_humidity_external | raw:480 scaled:48.0

Solarfocus systems allow the use of multiple heating circuits, buffers, boilers, and fresh water modules. The api can be configured to interact with multiple components.

# Create the Solarfocus API client with 2 Heating Circuits
solarfocus = SolarfocusAPI(ip="[Your-IP]",heating_circuit_count=2,system=Systems.VAMPAIR)
# Connect to the heating system
solarfocus.connect()

# Update all heating circuits
solarfocus.update_heating()

# Update only the first heating circuit
solarfocus.heating_circuits[0].update()
# Print the first heating circuit
print(solarfocus.heating_circuits[0])

# Set the temperature of the first heating circuit to 30°C
solarfocus.heating_circuits[0].indoor_temperatur_external.set_unscaled_value(30)
# Write the value to the heating system
solarfocus.heating_circuits[0].indoor_temperatur_external.commit()

Control the heating system by setting modes using the provided classes

# Without convenience method
solarfocus.heating_circuits[0].mode.set_unscaled_value(0)
solarfocus.heating_circuits[0].mode.commit()

# RECOMMENDED: Uitilizing convenience methods for modes
solarfocus.set_heating_circuit_mode(0, HeatingCircuitMode.ALWAYS_ON)

By default, the integration uses API-Version21.140. If your system is newer, you can specify the version by using the api_version parameter.

solarfocus = SolarfocusAPI(ip="[Your-IP]", system=Systems.VAMPAIR, api_version=ApiVersions.V_23_020)

You can find the API-Version displayed in the header of the screen of your Solarfocus system:

Note The API-Version of Solarfocus is independent of the versions of this library. Below list refers to to the Solarfocus versions. See releases for the changelog of this library.

• Add fresh water module state.

• Add biomass boiler pellet statistics.

• Add biomass boiler sweep function control.
• Allow input of external buffer values.