If the IP address of the PSD is no longer known, it can be reset to the factory defaults in the following way.
Two DIP switches are located on the front of the drive labeled S12 and S13 as shown below.
Set the switch S12 to "F" and switch S13 to "9" (Value of 249). Power cycle the drive. The IP address settings of the configuration port (X60 PC) will be reset to factory defaults: