Update of TcUsb.sys

Depending on the installed version of TwinCAT and the installation order of CP-Link 3 and TwinCAT it might be necessary to update the driver file TcUsb.sys.

▪: If you install CP-Link 3 on a PC with an already installed TwinCAT, the version of the driver file TcUsb.sys will be checked and, if necessary, replaced by a newer version. In this case an update is not necessary.

▪: If you install TwinCAT on a PC with an already installed CP-Link 3, the installation process of TwinCAT might replace the driver file TcUsb.sys by an older version. In this case you need to check the version and, if necessary, update the file.

Version check

Open Windows Explorer and navigate to: C:\Windows\System32\drivers. If TwinCAT is installed this folder contains the file TcUsb.sys. The version number can be checked via the file properties (right click -> Properties) on the tab Version:

tcusb_installedfileproperties

If the version of TcUsb.sys is older than 2.10.0.54 it is necessary to update the file.

Perform update

Version check of TcUsb.sys

Always check if TcUsb.sys needs to be updated (see above).

Open Windows Explorer and navigate to: C:\Windows\System32\drivers. Rename the file TcUsb.sys, e.g. to TcUsb_old.sys. The subfolder "Drivers" of the CP-Link 3 program directory contains the file TcUsb.sys. Copy this file to C:\Windows\System32\Drivers.

Restart the operating system

After the update of TcUsb.sys you need to restart the operating system!