51
In this case you should rename one of the function blocks that are in
the device project or add new function block an
d set name “MAIN” to it.
4.4
Unconnected inputs
If you get a message like in the figure below, you should check your
FBD for unconnected pins (they are marked as red circles).
Figure 75 – Unconnected inputs error
Figure 76 - Unconnected input