AMPERFIED Wallbox connect.home

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

1. 1Connect the ModbusCloud gateway (MCG or MLP series) to the same local network as the AMPERFIED Wallbox connect.home, ensuring both devices can communicate over TCP.
2. 2Verify that Modbus TCP is enabled on the wallbox and note the IP address and Modbus TCP port (default is typically 502).
3. 3In the ModbusCloud portal, add a new device and import the AMPERFIED Wallbox connect.home template from the template library.
4. 4Enter the wallbox IP address, port, and Modbus unit ID in the device configuration within the ModbusCloud portal.
5. 5Confirm that live readings such as charging state, voltage, and power appear correctly on the dashboard before deploying control commands.
6. 6Set 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

01

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.

02

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.

03

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.

04

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.

Registers (21)

20 read / 4 write

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