AMPERFIED Wallbox connect.home
Controls and monitors AMPERFIED Wallbox connect.home EV charging via Modbus TCP.
Template for the AMPERFIED Wallbox connect.home EV charger via Modbus TCP. It reads charging state, voltage, current, power, temperature, and energy counters. It also allows control of maximum charging current, failsafe current, watchdog timeout, and remote lock.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 21, read and write
- Brand
- AMPERFIED GmbH
- Key readings
- Charging State · Voltage L1 to L3 · Current L1 to L3 · Power (L1+L2+L3) · PCB Temperature · Energy since Installation
- Available commands
- Maximal current command · Failsafe Current configuration · Modbus-Master Watchdog Timeout · Remote lock
- Compatible models
- AMPERFIED Wallbox connect.home
- Last updated
Registers (21)
20 read, 4 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| 5 Charging State | Read | ||||
| 6 L1 - Current RMS | A | Read | |||
| 14 Power (L1+L2+L3) | kW | Read | |||
| 12 Voltage L3 - N rms | V | Read | |||
| 11 Voltage L2 - N rms | V | Read | |||
| 10 Voltage L1 - N rms | V | Read | |||
| 8 L3 - Current RMS | A | Read | |||
| 7 L2 - Current RMS | A | Read | |||
| 257 Modbus-Master Watchdog Timeout | s | Read and write | |||
| 4 Modbus Register-Layouts Version | Read | ||||
| 9 PCB-Temperatur | °C | Read | |||
| 13 Extern lock state | Read | ||||
| 15 Energy since PowerOn (High byte) | Read | ||||
| 16 Energy since PowerOn (Low byte) | Read | ||||
| 17 Energy since Installation (High byte) | Read | ||||
| 18 Energy since Installation (Low byte) | W | Read | |||
| 100 Hardware configuration maximal current | A | Read | |||
| 101 Hardware configuration minimal current | A | Read | |||
| 261 Maximal current command | A | Read and write | |||
| 262 Failsafe Current configuration | A | Read and write | |||
| 259 Remote lock | Write |
Loading registers…
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Use cases
- Monitor real-time charging state, voltage, current, and power of the AMPERFIED wallbox on a cloud dashboard.
- Set maximum charging current remotely to match available solar surplus or grid capacity.
- Create alerts when PCB temperature exceeds safe thresholds to prevent hardware damage.
- Track cumulative energy consumption per wallbox for tenant billing or energy reporting.
- Configure failsafe current and watchdog timeout to ensure safe fallback if gateway communication is lost.
- Lock or unlock the wallbox remotely to restrict charging access outside permitted hours.
Installation
Connect the ModbusCloud Gateway to the same local network as the AMPERFIED Wallbox connect.home, ensuring both devices can communicate over TCP.
Verify that Modbus TCP is enabled on the wallbox and note the IP address and Modbus TCP port (default is typically 502).
In the ModbusCloud portal, add a new device and import the AMPERFIED Wallbox connect.home template from the template library.
Enter the wallbox IP address, port, and Modbus unit ID in the device configuration within the ModbusCloud portal.
Confirm that live readings such as charging state, voltage, and power appear correctly on the dashboard before deploying control commands.
Set the watchdog timeout and failsafe current values to appropriate levels so the wallbox reverts to a safe state if communication drops.
Things to watch for
The wallbox does not start charging even though I send a current command. What is wrong?
The AMPERFIED Wallbox connect.home requires a minimum charging current of 6A. Some vehicles, such as the Renault Zoe or Mercedes EQA, need at least 10A. Ensure the commanded current meets or exceeds the vehicle requirement.
Energy readings seem incorrect or show zero. How do I fix this?
The energy registers use high/low byte pairs across two consecutive register addresses (e.g. 15/16 and 17/18). Verify that the template is reading both registers and combining them correctly. The ModbusCloud template handles this automatically, so check that no manual register overrides have been applied.
What happens if the ModbusCloud gateway loses connection to the wallbox?
If the Modbus master watchdog timeout expires without a valid command, the wallbox falls back to the configured failsafe current. Set both the watchdog timeout and failsafe current to appropriate values during commissioning.
Can I use this template with single-phase EVs?
This template is designed for use with EVs that have three-phase onboard chargers. Single-phase vehicles may not charge correctly or may not report accurate power values across all three phases.
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