Introduction
The TwinCAT 3 Plastic Application represents the third implementation level of the industry solution for plastics machines from Beckhoff Automation. In this level, the technology-specific functions of the TwinCAT 3 Plastic Framework (second level) are implemented in production-specific execution.

Various production part processes can be listed as examples of production-specific functions:
- Blow molding application: wall thickness control (WTC)
- Injection molding application: injection process (Injection Unit)
- Extrusion application: constant extrusion (extruder)
In the TwinCAT 3 Plastic Application, precisely these production part processes are implemented and preconfigured as examples. The source code for the Plastic Application is provided free of charge, which makes it possible to edit and extend the solution in any way. Therefore, the Base Application is ideal as a basis for starting a new project.
Concrete structure
In addition to the vertical division into Sample Code and Plastic Base Application, the project can also be differentiated horizontally: PLC and HMI.

For the horizontal division, there are two projects on the PLC side, which implement the functions of the Plastic Application in a coordinated manner.
In the vertical distinction, both projects are divided into a general part (Plastic Base Application) and a machine-specific part (Type specific PLC project). This division ensures that even after the start of a project, the further development of the Plastic Application can be benefited from.
![]() | Editing the Plastic Base Application not recommended Editing the Plastic Base Application is quite possible. However, the option of support from Beckhoff Automation in terms of adaptations and extensions is thereby forfeited. Normally, you only edit the machine-specific part (Sample Code) and use the Plastic Base Application as a library. |
Currently, the Plastic Application supports the following machine types:
- Blow molding machines
- Extrusion machines
Further machine types are planned for future development.