The problems with the communication to the drive system were finally solved by changing to a different adapter. It should be noted that at all times we have asked and followed the instruction and advice from Siemens, and still have so many problems and delays is rather disappointing. All the required functionalities of the system have now been verified and tested and the procedure to replace motors has also been tested and documented. The whole set-up of the new system with the required changes in the setting from the current values has been documented. One main issue remains with the main earth leakage breaker for the drive system sometimes tripping on power up which can also cause the weather station fuse to blow. A possible solution has been proposed by Siemens.