How do i create a new SCD file for RTU560 from merged another SCD files
There is SCD engineering tool called IET600 in ABB. In it create a new project and import the frist scd directly. In the same project, you create mulitple new IED's and import the content from second SCD one by one onto the new IED's using import option. The finallly make required configuration in this new project and export it as one single SCD.