Yaskawa Ladder Works Operation Manual - Manual (Page 137)

5.5 OPERATION IN LADDER EDITOR
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5.5.3 Unregistered Symbol List
The new symbols in the ladder program are assigned to the unregistered symbol list.
The unregistered symbol can be assigned to the symbol database in the unregistered symbol list
Display Unregistered Symbol List
1.
Select Tool (T) - Symbol System (S) - Unregistered symbol list (U) from the menu.
2.
The unregistered symbol list window is displayed in the docked mode. The symbols that
have not been registered to the symbol database can be viewed.