Type system

TwinCAT 3 provides a type system for the management of data types. The type system consists of system basic types and can be extended by custom data types through the customer project.

This documentation describes the TwinCAT 3 type system and the management of data types. The TMC editor, with which the data types are created and described, is described in the documentation entitled “C++” in the TwinCAT Module Class Editor (TMC) section.