I have a question.. I have a OSP5000-M and OSP5000-L . On the M when you are in MDI, you do not have to press F1 Data input every time you enter a command in MDI, But on the Lathe, if you dont press F1, it gives you a 2151 Command Character Error. Is there a setting different between the two? If you dont press the F1, and it throws the error, it forgets all the previous entries and just is annoying sometimes.