The wallbox function block is used to control the charging of your electric vehicle, whilst providing a graphical interface of its state and progress. You can use this function block with a charging station connected through the network, or through the inputs directly on the block.

The following charging stations are currently implemented as predefined devices within Loxone Config:

  • Keba KeContact P20 Wallbox
  • BMW Pro Wallbox


Press F5 to add in the ‘Wallbox’ function block.

Add Wallbox Block

Within the properties of the function block, you can define the charging station you want linked to this Wallbox block. Only charging stations that are network controlled, and have already been added to the configuration will appear in this drop down list.



The Keba Wallbox communicates to the Miniserver through the local network passing on any useful information, for example, if the Vehicle is plugged into the charger.

Wallbox Properties

As all of the communication with the wallbox has been preset for you, the configuration is simple.

When using the Keba Wallbox, only the function block inputs Ie (Start/Stop charge), AII (Charging power limit) and R (Reset) should be used. The other inputs are not used as their data is received directly over the network, without any extra inputs being required.

The charging then begins when the vehicle is connected to the charging station and input le is active.

Wallbox Block


You can still use the Wallbox function block for any other charging stations that may not have been predefined within Loxone Config. These would be set up using all the inputs on the function block, and do not require a Charging Station selected in the properties drop down list.

As before, the Q1 output to charge the Vehicle will only be on once a Ic is on, indicating a Vehicle is connected, and input Ie is on. The inputs AIc & AIe are used to track the power and energy used in the charge sessions and can also be used as statistics.

Wallbox 3RD Party Charger



IeStart/ Stop chargingOn = charging process started
IcDigital input indicating vehicle connectedOn = vehicle connected
AIcAnalogue Input powerCurrent charging capacity [kW] (momentary value)
AIeAnalogue input energyCount energy [kWh] (absolute value)
AIlCharging power limitMaximum charging power [kW]
RResetResets counter value


Q1Charging ActiveOn = Charging process started/active
Q2Vehicle ConnectedOn = Vehicle connected
AQpCurrent power outputCurrent power output [kW]
AQcEnergy consumptionEnergy consumed during the current charging session [kWh]
AQc1Total energy consumptionTotal energy consumed across all charging sessions [kWh]
AQlCharging energy limitMaximum charging energy [kW]
EErrorcodeErrorcode which was received by the wallbox (further information can be found in the manual of the product)