# Attachment Tuning

Attachment tuning gives the possibility to compensate for front attachments on the tool. The compensation can be made for each tightening program.

An operator can hot swap an attachment and then select a tightening program tuned for that specific attachment.

Attachment tuning is available for all conventional strategies, excluding the STwrench.

1. Select a controller in the Plant structure workspace .

2. Select Tightening program .

   The Tightening program overview shows a list of tightening programs.

3. Double-click the name of one of the tightening programs in order to view, or configure the program.

4. Select Attachment tuning enabled Yes or No in the Properties menu.

   If this feature is disabled, the remaining parameters are invisible.

5. Go to the Step configuration menu and to the Start stage.

6. Select Use attachment tuning Yes or No.

   If this feature is switched to Yes, the tuning factors are visible and can be edited.

The tuning parameters are:

- Attachment gear ratio

- Efficiency tuning

Parameters for Attachment tuning
Attachment tuning | Description | Default
--- | --- | ---
Attachment gear ratio | The Attachment gear ratio is needed to compensate the angle. Minimum: 0.5 Maximum: 100 Socket rotation speed = Tool speed / gear ratio | 1.0
Efficiency tuning | Attachment gear ratio combined with the Efficiency tuning is needed to compensate the torque. Minimum: 0.5 Maximum: 1.0 For example 0.9 means 10% efficiency loss. | 1.0

CAUTION; The attachment gear ratio affects the tool speed and in turn, may affect the safety limits.