pysolarfocus

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

Table of Contents

1. About
2. Supported Solarfocus Software and Hardware
3. How To
   • Installation
   • Basic Example
   • Handling multiple components
   • Conveniently set modes
   • API-Version specification
4. Changelog of API-Versions

About

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.

Supported Solarfocus Software and Hardware

Software

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.

Hardware

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

Components	Supported
Heating Circuit 1 - 8 (Heizkreis)	✅
Buffer 1 - 4 (Puffer)	✅
Solar (Solar)	✅
Boiler 1 - 4 (Boiler)	✅
Heat Pump (Wärmepumpe)	✅
Biomass Boiler (Kessel)	✅
Fresh Water Module 1 - 4 (Frischwassermodul)	✅

How To

Installation

$ pip3 install pysolarfocus

Basic Example

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

Handling multiple components

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()

Convenitently set modes

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)

API-Version specification

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:

Changelog of API-Versions

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.

23.020

• Add fresh water module state.

23.010

• Add biomass boiler pellet statistics.

22.090

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