# Pin Configurations for Emergency Stop

The Power Focus has an external EM Stop interface and I/O bus on the connector panel located behind the front access door.

The PIN configuration differs depending on whether it is a single or multiple controller solution. Furthermore, for the single controller, the PIN configuration differs depending on whether the controller is equipped with an EM Stop button or not.

The following sections describe the available PINs on the connecting panel, and the use of the different PINs to connect an EM Stop button.

In this Section

- Single Controller with Emergency Stop Button
- Single Controller without Emergency Stop Button
- Multiple Controllers with Emergency Stop Buttons