Navigation in the Ladder editor
You can use the keys and key combinations as described below to switch between cursor positions in the editor. Switching also works across networks.
→ ←  | Change to the adjacent cursor position, along the signal flow, i.e. from left to right and vice versa.  | 
↑ ↓  | Change to the next cursor position above or below the current position, if this adjacent position belongs to the same logical group. A logical group is formed by all the connections of a box, for example. If such a logical group does not exist: Move to the first cursor position in the next upper or lower adjacent element. In the case of elements connected in parallel, navigation takes place along the first branch.  | 
Not currently implemented. Ctrl + Pos1  | Change to the first network; this is selected.  | 
Ctrl + End  | Change to the last network; this is selected.  | 
Page Up ↑  | Scroll up 1 page. The top network on this page is selected.  | 
Page Down ↓  | Scroll down 1 page. The bottom network on this page is selected.  |