# Configuring the Extended Human Machine Interface (EHMI)

The EHMI is a tool accessory. It is installed on the tool and connected to the tool accessory bus. It has a graphical display, three function buttons and an optional scanner. The display is a subset of the controller GUI with the possibility to select tightening programs, batch sequences etc. Through the function buttons, the operator can interact with the controller.

In the EHMI configuration, it is possible to configure whether the function buttons should be set to On or Off.

1. Select a controller in the Plant structure workspace .

2. Select the Configurations icon in the top menu bar.

   The workspace area displays a list of configurations.

3. Double-click on a configuration row that has Tool configuration in the Type column.

   Alternatively, select Add to create a new Tool configuration.

4. Double-click on the EHMI in the Accessory bus menu, to open a shortcut window for the configuration.

5. Make the selected configuration. The configurations are auto-saved in ToolsTalk 2.

EHMI buttons
Parameter | Description
--- | ---
Function buttons = On | The buttons have full functionality to configure settings within the visible menus.
Function buttons = Off | The function buttons can only be used to acknowledge a necessary dialog on the EHMI