Compiler error C0037

Message: '<invalid input>' is no input of '<function name>'

Possible error cause: A local variable is defined in a function call.

Error correction: Declare the variable as an input parameter.

Example of the error:

PROGRAM PLC_PRG
VAR
	 i : INT;
END_VAR
i := TEST(iVar := 1);

FUNCTION TEST : INT
VAR
	iVar : INT;
END_VAR


--> C0037: 'iVar' is no input of 'TEST'

Error correction:

Example:
VAR_INPUT
	iVar : INT;
END_VAR