Message: Recursion in base function block list: <function name>
Possible error cause: A base function block is extended by itself.
Error correction: Recursion in base function block lists is not possible.
Example of the error:
PROGRAM PLC_PRG VAR inst : FB; END_VAR FUNCTION_BLOCK FB EXTENDS FB VAR END_VAR --> C00091: Recursion in base function block list: FB -> FB