General
If a slave can´t be detected by a network scan or if it is not present in the Device Catalog, it´s commonly the case of not choosing the correct file type upon importing the ESI file in SyCon.net.
Please make sure to choose EtherCAT DFF whilst importing the salve´s description file:
Master
Title 2 provides an entry in the table of contents as x.1 + n
Slave
Title 3 provides an entry in the table of contents as x.1 + n.1 + m
etc.