Cause : Two Control Units identified on the DRIVE-CLiQ line comes when in the actual topology, 2 Control Units are connected with one another through DRIVE-CLiQ. As standard, this is not permitted. It is only permitted, if the OA application OALINK is already installed on both Control Units.

- remove the DRIVE-CLiQ connection, restart the systems, install OALINK on both Control Units and commission.
- remove the connection to the second Control Unit and restart.
- for the S120M component DRIVE-CLiQ extension, interchange the hybrid cable (IN/OUT)