BECKHOFF CP-Link3 - Manual (Page 71)

Page 71
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 :
If the version of TcUsb.sys is older than 2.10.0.54 it is necessary to update the file.
Perform update
Note
Version check of TcUsb.sys
Always check if TcUsb.sys needs to be updated (see above).
BECKHOFF CP-Link 3: Miscellaneous