Mentioned in my other thread but wanted to ask the specific question

With my 8050, if I try to load a file thats not on the disk, the drive responds by switching the bi-coloured LED to red, but the 3032 PET with basic 2.0 stays at 'loading' rather than showing any error. I can abort the load by pressing RUN/STOP

I cant get a clear answer by searching and would like to know if this is expected behavior and what I should see transmitted over the GPIB.