Smartfox PRO Charger 2
Controls EV charging with solar surplus and dynamic load management.
Template for the Smartfox PRO Charger 2 EV wallbox via Modbus TCP. Reads real-time charging data such as power, energy, and temperature, and sends control commands for charging mode, charging power, and phase switching.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 8, read and write
- Brand
- Smartfox
- Key readings
- Internal PC temperature · Charging power · Energy current session · Total energy · Charging mode · Local button press detected
- Available commands
- Charging mode · Charging power · Local button press acknowledged
- Compatible models
- Smartfox PRO Charger 2
- Last updated
Registers (8)
7 read, 3 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Temperatur PC Innen | °C | Read | |||
| Ladeleistung | W | Read | |||
| Energie aktuelle Ladung | kWh | Read | |||
| Energie Gesamt | kWh | Read | |||
| Lademodus | Read and write | ||||
| aktuelle Ladeleistung | W | Read | |||
| Tastendruck vor Ort erkannt | Read and write | ||||
| Charging Power | W | Write |
Loading registers…
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If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Monitor real-time charging power and session energy on a live cloud dashboard for your customer.
- Create an alert when internal charger temperature exceeds a safe threshold to prevent hardware damage.
- Switch between Eco, Full Power, and Comfort charging modes remotely from the ModbusCloud interface.
- Log total energy consumption per charger to generate monthly usage reports for billing or analysis.
- Set up automated rules to reduce charging power when household load approaches the main fuse limit.
- Verify that solar surplus charging is active and track how much PV energy is used for EV charging.
Installation
Connect the ModbusCloud Gateway to the same local network as the Smartfox PRO Charger 2 and ensure both devices can communicate over TCP.
Verify that Modbus TCP is enabled on the Smartfox PRO Charger 2 and note its IP address and configured Modbus TCP port.
Assign a unique Modbus unit ID to the charger if multiple devices share the same network segment.
Import the Smartfox PRO Charger 2 template in the ModbusCloud portal and enter the charger IP address, port, and unit ID.
Confirm that register values such as charging power and charging mode appear correctly on the dashboard to validate the connection.
Test a write command, for example switching the charging mode, to verify bidirectional communication is working.
Things to watch for
Which Modbus TCP port does the Smartfox PRO Charger 2 use by default?
The default Modbus TCP port is typically 502. Check the charger's network settings menu to confirm or change the port if another device on the network already uses 502.
Why does the total energy value look incorrect or very large?
The total energy register (Energie Gesamt) uses a uint64 data type spread across four consecutive registers. Make sure your gateway is configured to read all four registers and that the byte order matches the charger's convention (typically big-endian).
Can I read and write the charging mode from the same register?
Yes. The charging mode register and the local button press register are both readable and writable. You can read the current state and send a new value to change the mode remotely.
The gateway connects but all values show zero. What should I check?
Verify that the register addresses are configured in the 4xxxx range as holding registers (e.g. 40999, 41011, 42100). Also confirm the correct Modbus unit ID is set on both the charger and the template.
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