License Response File

The Volume License Response File is stored in the TwinCAT 3 license dongle or in the Beckhoff IPC with this volume license.

If you have lost the Volume License Response File for your volume license (e.g. due to a hard disk crash), you can request it again from Beckhoff support.

The License Response File contains a general TwinCAT 3 license for all IPCs or EL6070 license key terminals with the corresponding volume system ID. It can thus be transferred to all systems with the same volume system ID if they meet the requirements (operating system and TwinCAT 3 platform level of the respective volume license).

The License Response File is stored on the target system in directory c:\twincat\3.1\target\license.

	For a dongle-based volume license, License Response Files have been delivered on license dongles since mid-2017.

Storing the license information (License Response File)

TwinCAT 3 license dongles have a memory function so that the license file can be stored on the license dongle and easily transported together with the dongle.

TwinCAT 3 does not access the license file on the license dongle directly, but creates a working copy on the hard disk of the IPC. The name of this working copy starts with "Cache…".

The license information (License Response File) is always stored on the hard disk of the IPC (directory: c:\twincat\3.1\target\license).

Prerequisite for using the memory function

Use TwinCAT 3.1 Build 4022 or higher (TwinCAT 3 Engineering and TwinCAT 3 Runtime) to utilize the memory function.

For systems with Windows Embedded Compact (formerly Windows CE), automatic download of the license file is only supported with TwinCAT 3.1 Build 4022 or higher.

	All currently available TwinCAT license dongles have a memory function The very first version of EL6070 and C9900-L100 did not yet support the memory function. However, the memory function is now standard for TwinCAT license dongles. The following description therefore only applies to the first generation of EL6070 and C9900-L100.

Memory function of the EL6070 License Key Terminal

The EL6070 License Key Terminal supports the function of storing the TwinCAT 3 License Response Files on the terminal (from hardware revision 17 and firmware revision 04). The firmware version can be read from the type number of the terminal.

	Older versions cannot be updated.

Memory function of the C9900-L100 license key USB stick

The license key USB stick supports the function of storing TwinCAT 3 License Response Files on the USB stick in all versions.

The license key USB stick is NOT a normal memory USB stick. It can only be accessed via TwinCAT and is therefore not visible in Windows Explorer. Files can only be saved or read from the license key USB stick via TwinCAT 3.

The installation of TwinCAT 3 also includes the installation of the required Windows drivers for the license key USB stick.

The TwinCAT 3 license key USB stick cannot be used without installing the TwinCAT Runtime, since the TwinCAT Runtime is responsible for validating TwinCAT licenses.