Compiler Error C0175

Message: 'RETAIN' or 'PERSISTENT' not allowed in this place

Possible error cause: 'RETAIN' or 'PERSISTENT' is used in a function.

Error correction: Use 'RETAIN' or 'PERSISTENT' at the intended locations.

Example of the error:

PROGRAM MAIN
VAR
END_VAR

POU_1();

FUNCTION POU_1
VAR RETAIN
END_VAR

Message:

C0175: 'RETAIN' or 'PERSISTENT' not allowed in this place