License protection

The DLL and all related functions are only available in TwinCAT systems.

A valid license is required to use the DLL.

As of DLL Version V1.0.22.1, at least a basic license is required in order to use the DLL. It cannot be used only by means of an options package.

The kernelv_startup() checks for the presence of a license when the simulation kernel is started. If a valid license is not found, the start of the simulation kernel is aborted and the error code ERR_NO_LICENSE is returned.

If errors occur on accessing license information, the error code ERR_REGISTRY_ACCESS is returned. This may occur if

• VNCK was incorrectly installed under TwinCAT 2 or
• no trial license was generated under TwinCAT 3.

In addition, license packs are also required to used certain functions, e.g. transformations or when the number of axes is > 8. The presence of these license packs is checked during kernelv runtime and if necessary a CNC error message is output.