# Tethering, Confirm and Control Mode

When running ILM Protocol or Open Protocol, there are three available modes. The modes depend on tightening programs in different ways as described below:

- Tethering: The tool is enabled if it is located within the user defined distance and orientation, regardless of the selected tightening program. Tethering mode is the default mode.

- Confirm: The controller (which in turn can receive process information from an overhead system) selects the tightening program to be used. The ILM system confirms that the user defined position and orientation for that tightening program is correct and enables the tool.

- Control: The ILM system tells the controller which tightening program to use based on the tool's position and orientation. This requires Source Tightening to be configured and chosen as the task in the controller.