SOLARFOCUS Distribution
Controls SOLARFOCUS heat distribution units via Modbus TCP
This template connects SOLARFOCUS heat distribution units equipped with the ecoManager-touch controller via Modbus TCP. It reads flow temperatures, mixing valve positions, circulation pump states, and buffer/hot water storage temperatures. It also allows control of target temperatures, operation modes, and cooling release for two heating circuits.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 31, read and write
- Brand
- SOLARFOCUS
- Key readings
- Flow Temperature HC1/HC2 · Mixing Valve Position HC1/HC2 · Circulation Pump State HC1/HC2 · Buffer Temperature Top/Bottom · Hot Water Storage Temperature · Operation Mode HC1/HC2
- Available commands
- Target Flow Temperature HC1/HC2 · Hot Water Target Temperature · Operation Mode HC1/HC2 · Release Cooling HC1/HC2
- Last updated
Registers (31)
18 read, 13 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| 1100 - Actual Flowtemperature HC1 | °C | Read | |||
| 1103 - State Safety Temperature Thermostat HC1 | Read | ||||
| 1105 - State Circulationpump HC1 | Read | ||||
| 1106 - State Mixing Valve Position HC1 | % | Read | |||
| 1107 - State Operation mode HC1 | Read | ||||
| 1150 - Actual Flowtemperature HC2 | °C | Read | |||
| 1153 - State Safety Temperature Thermostat HC2 | Read | ||||
| 1155 - State Circulationpump HC2 | Read | ||||
| 1156 - State Mixing Valve Position HC2 | % | Read | |||
| 1157 - State Operation mode HC2 | Read | ||||
| 1900 - Actual Heating/Cooling Buffer Temperature Top | °C | Read | |||
| 1901 - Actual Heating/Cooling Buffer Temperature Bottom | °C | Read | |||
| 1903 - State Heating/Cooling Buffer Circulation Pump | Read | ||||
| 1904 - State Heating/Cooling Buffer Operation state | Read | ||||
| 1905 - State Heating/Cooling Buffer Operation mode | Read | ||||
| 500 - Actual Hot Water Storage Temperature | °C | Read | |||
| 501 - State Hot Water Storage Operation State | Read | ||||
| 502 - State Hot Water Storage Operation mode | Read | ||||
| 32600 - Target Flowtemperature HC1 | °C | Write | |||
| 32602 - Release Cooling HC1 | Write | ||||
| 32603 - Operation Mode HC1 | Write | ||||
| 32003 - Hot Water Circulationpump | Write | ||||
| 32650 - Target Flowtemperature HC2 | Write | ||||
| 32652 - Release Cooling HC2 | Write | ||||
| 32653 - Operating mode HC2 | Write | ||||
| 32000 - Hot Water Targettemperature | °C | Write | |||
| 32002 - Hot Water Operation mode | Write | ||||
| 32608 - Operation Mode HC1 | Write | ||||
| 32658 - Operation Mode HC2 | Write | ||||
| 32606 - Actual Roomtemperature HC1 | °C | Write | |||
| 32656 - Actual Roomtemperature HC2 | °C | Write |
Loading registers…
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Use cases
- Monitor flow temperatures and mixing valve positions of two heating circuits on a live cloud dashboard.
- Set target flow temperatures and operation modes remotely to adjust comfort levels without a site visit.
- Create an alert when buffer storage top temperature drops below a defined threshold for early fault detection.
- Log hot water storage temperature over time to verify domestic hot water performance and setpoint compliance.
- Combine this template with SOLARFOCUS heat pump or pellet boiler templates to supervise the full heating system.
- Release or disable cooling mode for individual heating circuits remotely during seasonal transitions.
Installation
Connect the SOLARFOCUS ecoManager-touch controller to your local network via Ethernet and note its IP address.
Wire the ModbusCloud Gateway to the same local network, ensuring it can reach the controller IP.
In the ecoManager-touch settings, verify that Modbus TCP communication is enabled and confirm the default TCP port (typically 502).
Import the SOLARFOCUS Distribution template in the ModbusCloud platform and assign the controller IP address and port.
If external room temperature sensors are used, configure registers 32606 and 32656 as writable inputs in the template settings.
When combining with other SOLARFOCUS templates (heat pump, pellet, biomass), import those additional templates for the same gateway and verify there are no register address conflicts.
Things to watch for
Why do I need multiple SOLARFOCUS templates instead of just one?
The Distribution template covers heating circuits, buffer storage, and hot water storage only. Heat generation equipment such as heat pumps, pellet boilers, or biomass boilers each have their own register sets and require a separate dedicated template.
What are the writable room temperature registers (32606, 32656) used for?
These registers allow you to send an external room temperature value to the ecoManager-touch controller. If you have room sensors connected through the gateway rather than directly to the SOLARFOCUS system, write the measured value to these registers so the controller can use it for regulation.
The gateway connects but no data appears on the dashboard. What should I check?
Confirm that Modbus TCP is enabled on the ecoManager-touch and that the IP address and port (usually 502) match the template configuration. Also verify that no firewall or VLAN boundary is blocking traffic between the gateway and the controller.
Can I control cooling release remotely through this template?
Yes. The template includes Release Cooling registers for HC1 and HC2. Writing the appropriate value activates or deactivates cooling mode for each circuit independently.
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