Hi stevieg, it is probably too late, maybe this will help somebody ... http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo〈=en&objid=18548070&caller=view On step 3 : "Note: Some USB serial converters are mostly assigned another port as COM1 interface. You must select the relevant available COM interface and execute the procedure described above." Regards ...