Compiler Warning C0406
Message: The implicit check function '<name of check function>' is hidden by another variable or function. Checks will not be performed! Resolve the conflict and clean the application to use the check function.
Possible error cause: A method of a POU has the same name as an implicit check function.
Error correction: Rename the method or remove the implicit check function.
Example 474. Example of the warning
// Automatically generated code: Do not edit FUNCTION CheckBounds: DINT VAR_INPUT index, lower, upper:DINT; END_VAR FUNCTION_BLOCK TestFB VAR a:ARRAY [0..1] OF INT; i : INT; END_VAR a[i] := i; METHOD CheckBounds:DINT VAR_INPUT index, lower, upper : DINT; END_VAR
The array access in the TestFB function block produces the following warning.
Message:
C0406: The implicit check function 'CHECKBOUNDS' is hidden by another variable or function. Checks will not be performed! Resolve the conflict and clean the application to use the check function.