Compiler error C0066

Message: Cannot compare type '<data type>' with type '<data type>'

Possible error cause: Two data types are compared which cannot be compared with each other.

Error correction: Compare only data types that can be compared with each other.

Example of the error:

PROGRAM PLC_PRG
VAR
	i : INT;
	re : REAL;
	str: STRING;
	b : BOOL;
END_VAR

b := i > str;


--> C0066: Cannot compare type 'INT' with type 'STRING'

Error correction:

Example:
b := i > re;