Enabling I/O devices

After the IO Timing Configurator has been closed, all I/O devices can be enabled again in the Solution Explorer.

Enabling I/O devices 1:
Expand Solution Explorer > TwinCAT Project > I/O > Devices
Press and hold the Ctrl key to select the XTS relevant devices
Right-click on the XTS relevant devices to open the context menu
Click Disable in the context menu