Pressing the F5 (Enter) key takes you to the submenu:

From here the control's retention memory can be reset.

This operation, performed by pressing F4 and F8 at the same time, consists of an erasure of the retention memory data followed by a system restart.

The operation will not be performed if:

•The control is not in Loading Mode, in which case: Illegal status - operation not allowed is displayed.

•The operation has not been enabled by password, in which case is displayed: Not Allowed, Password protected!