The System Scan searches for stations on the network and requests all needed configuration data from each station. Since the size of the data depends on the Type and possible installed options, the required time for a System Scan may vary greatly. For a huge system containing more than 1000 members, it can take up to one minute or more.
The <Ctrl> button together with 'Initiate System Scan' to perform a 'Full System Scan'. This ensures that all data is retrieved from all stations, similar to the situation when you start the software.