Compiler error C0046

Message: Identifier '<identifier name>' not defined

Possible error cause: An identifier is used that is not declared.

Error correction: Declare the variables that you want to use.

Example of the error:

PROGRAM PLC_PRG
VAR

END_VAR

i := 1;


--> C0018: 'i' is no valid assignment target
--> C0046: Identifier 'i' not defined

Error correction:

Example:
VAR
	i : INT;
END_VAR