go-eCharger Home+
Controls and monitors go-eCharger Home+ EV wallbox charging sessions via Modbus TCP.
This ModbusCloud template reads and controls a go-eCharger Home+ EV wallbox over Modbus TCP. It reads charging state, total and session energy, total power, per-phase current, and error code, and lets you start or stop charging, change the ampere limit, and switch the access state. It is aimed at installers who want a live dashboard of charging sessions and programmatic control for load balancing or tariff optimisation.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 12, read and write
- Brand
- go-e
- Key readings
- Car state · Error code · Total energy · Total power · Session energy charged · Current L1 to L3
- Available commands
- Allow charging · Ampere limit (volatile) · Access state
- Compatible models
- go-eCharger HOME+
- Last updated
Registers (12)
9 read, 3 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| CAR_STATE | Read | ||||
| ERROR | Read | ||||
| ENERGY_TOTAL | Wh | Read | |||
| POWER_TOTAL | W | Read | |||
| ENERGY_CHARGE | kW | Read | |||
| AMP_L1 | A | Read | |||
| AMP_L2 | A | Read | |||
| AMP_L3 | A | Read | |||
| ADAPTER_INPUT | Read | ||||
| ALLOW | Write | ||||
| AMPERE_VOLATILE | A | Write | |||
| ACCESS_STATE | 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
- Build a customer self-service dashboard showing current charging state, session energy delivered, and charging cost estimate per session.
- Throttle the wallbox current limit when total building demand approaches the grid connection capacity.
- Log total energy per month for employer EV expense reporting or home charging reimbursement.
- Automatically start charging only during cheap dynamic tariff windows using a ModbusCloud automation rule.
- Alert the installer when the error code becomes non-zero, including the code in the message for quick diagnosis.
Installation
In the go-eCharger app, enable Modbus TCP under the advanced settings menu.
Note the wallbox IP and set a DHCP reservation so it stays stable after router reboots.
In ModbusCloud, add a Modbus TCP device at the wallbox IP, port 502, slave ID 1.
Import the go-eCharger Home+ template. Readings start updating within one polling cycle.
Test a write, for example setting the ampere limit, to confirm the device accepts control commands.
Things to watch for
ENERGY_CHARGE says kW but looks like kWh. Is the template wrong?
The go-e register documentation labels this as kW but in practice the value behaves like kWh (energy, not power). The template preserves the actual behaviour. Label your dashboard widget as kWh to avoid confusion.
Ampere limit writes work but reset when the wallbox reboots. Is that normal?
Yes. The Modbus ampere limit is volatile by design for safety. If you need the limit to persist across reboots, write it once per boot from a ModbusCloud automation, or use the go-eCharger app to set the non-volatile default.
More go-e templates
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