Why does the warning11:" ...symbol not defined..." appears?

FAQ #100526

 

Problem
On build a warning as below appears:

Warning 11: Regelung.fbd: Line 10: Fupla block symbol not defined, in ';; Block:': Fupla file needs re-compile

Reason
PG5 1.3.120 checks if all COB's have a name. If COB 0 per example has no symbol name, this warning will appear.

Solution
This warning will no more appear in newer PG5 versions. You can either give a name to COB 0 or ignore the message since it won't generate any problems in your project.