# Tightening Program Library Introduction

The combination of a tightening strategy selection and parameter values forms the tightening program, this is named as a tightening program. The tightening program can be either Global or Local.

A Local tightening program is valid for a single controller and a Global tightening program may have several controllers subscribing to the same tightening program.

A controller can subscribe to Global tightening programs. Whenever a change is made to a program, the change propagates to all controllers in ToolsTalk 2 which subscribe to the program.

The Tightening program library manages the global tightening programs and the controllers that subscribe to specific Tightening programs.

Updates to subscribers are made within the ToolsTalk 2 application. All affected controllers will show the Push indicator in the Line structure workspace.

ToolsTalk 2 can distinguish between a local and a global tightening program, although the controller itself has no knowledge of this. Therefore it is important to specify the action in ToolsTalk 2 if a tightening program is changed via either the controller GUI or the web GUI.

WARNING

Risk of injury

A change in configuration to the tightening program may cause unexpected torque, rotational direction, or speed in the system(s) where the tightening program is currently in use. This could result in severe bodily injury and/or property damage.

- Check the tightening program configurations after adding a new program or after applying changes to an existing program.

Relevant Information

- Pushing Configurations to a Controller