# Enabling and Disabling the Tightening Settings

The General Virtual Station configuration contains a tightening section, which is used to set parameters for Disable tightening and Disable loosening.

1. Select a controller in the Plant structure .

2. Go to the Configurations tab in the menu bar.

   The workspace area displays the available Configurations.

3. Double-click on an existing General Virtual Station to configure, or select Add to create a new one to configure.

4. Make the relevant selections in the Tightening Settings parameters, according to the information in the tables below.

## Unlock tool on loosening settings

Parameter Value | Description
--- | ---
Off | A disabled tool will remain disabled regardless of the loosening status.
On OK | A disabled tool will be unlocked after an OK loosening has been done.
Always | A disabled tool will be unlocked as soon as a loosening has been done, regardless of the loosening status.

## Disable loosening settings

To make sure that a bolt cannot be loosen by mistake there is a function called disable loosening. There are four disable loosening settings:

Settings | Description
--- | ---
Off | Loosening is always enabled. It is always possible to loosen a bolt.
On OK tightening | Loosening is disabled after an OK tightening. It is not possible to loosen a correct tightened bolt.
On NOK tightening | Loosening is disabled after an NOK tightening. It is not possible to loosen a not correct tightened bolt.
Always | Loosening is always disabled. It is not possible to loosen a bolt.

These settings are valid during the execution of a task. Loosening enables and disables depending on the setting and the status of the last tightening. For a new task the start state for disable loosening is set as follows:

Settings | Start state for new task
--- | ---
Off | Loosening enabled. It is possible to loosen a bolt.
On OK Tightening | Loosening disabled. It is not possible to loosen a bolt.
On NOK Tightening | Loosening disabled. It is not possible to loosen a bolt.
Always | Loosening disabled. It is not possible to loosen a bolt.

The start state applies whenever a new task is assigned to a Virtual station or when a task starts again. The start state can differ depending on the type of task, described as follows.

Tightening program and Sync mode

Enable and disable of loosening follows the disable loosening setting and is set to the status of the last tightening.

Batch Sequence

During a batch sequence the enable or disable of loosening follows the disable loosening setting and is set to the status of the last tightening. This also applies when a batch goes to the next one within a batch sequence. If a batch sequence starts again, the loosening is enabled or disabled according to the start state for a new task.

Source Batch

Enable and disable of loosening follow the same procedure as described in Batch sequence. If an ongoing source batch starts again or if a new one is selected, the loosening is enabled or disabled according to the start state for new task.

Source Tightening (No batch control)

During a batch, enable and disable is set according to the status of the last tightening. If another program is selected, enable and disable is set according to the start state for new task. If any change of program, tool or socket is done, enable and disable is set according to the start state for new task.

Multispindle tightening

Enable and disable of loosening always follows the status of the last tightening. This is also applicable for a new sync mode.

## Disable tightening settings

To make sure that an operator does not tighten a bolt by mistake there is a function called disable tightening. There are four disable tightening settings:

Settings | Description
--- | ---
Off | Tightening is always enabled. It is always possible to tighten a bolt.
On OK tightening | Tightening is disabled after an OK tightening. It is not possible to tighten a correct tightened bolt.
On NOK tightening | Tightening is disabled after an NOK tightening. It is not possible to tighten a not correct tightened bolt.
Always | Tightening is always disabled. It is not possible to tighten a bolt.

These settings are valid during the execution of a task. Tightening enables and disables depending on the setting and the status of the last tightening. For a new task the start state for disable tightening is set as follows:

Settings | Start state for new task
--- | ---
Off | Tightening enabled
On OK Tightening | Tightening enabled
On NOK Tightening | Tightening enabled
Always | Tightening disabled

The start state applies whenever a new task is assigned to a Virtual station or when the task starts again. The start state can differ depending on the type of task, as described in the Disable Loosening settings section.

## Allowing a disabled tool to unlock after loosening

1. In the configuration used by the tool (set in the Virtual Station the tool is connected to), set the Unlock tool on loosening to On OK or Always.

   To enable the setting above, the following conditions need to be met:

   1. The Disable loosening parameter cannot be set to Off or Always.

   2. The Disable loosening value cannot be set to the same value as the Disable tightening.

   3. The tightening program used must have loosening enabled.

When the tool is locked for either tightening or loosening due to a disable state, it can be unlocked with one of the following input signals:

- Master_Unlock

- Unlock_Tool_On_Disable

This input signal can be sent to the controller either from an accessory, from a programable tool accessory, or from the Fieldbus unit.

Relevant Information

- Pushing Configurations to a Controller