I am an Asian research student in UK. I took part in a European project so that I have to attend some short courses and do experiment in Schengen countries for a short period. I spent 2 months in Schengen area using a tourist visa from mid-April to mid of June and my visa was expired in August. I flew back to UK to apply for a new tourist visa then I got a new 2-year visa from August. After that, I went back again to continue my work in Schengen countries and spent another 2 months there. Note that. When I entered again, the border asked me how long I will stay and I said two months (As I thought that the new visa has resetted the 90/180). Then he allowed me to get in without any concerns (He should have been noticed that I will stay more than 90days within the last 180days).
When I finished my work, I came back to UK without any issues. And I just knew about 90/180 from my friend that there is not rule of resetting 90/180. According to the 90/180, I spent more than 90days within the last 180 days. So I'm a little confused that why I did not get a penalty when I passed the border or the new visa can reset the 90/180? Which one is true?
And now it has been 6 months already that I have not entered the Schengen area. What do you think if I enter the Schengen area again as I will have to visit some many strict countries (e.g. Germany, Switzerland etc.) for a meeting in the near future. Who should I contact about my situation? I’m happy to pay the penalty fee before entering the Schengen zone to make sure that I will have no problem to pass the border or with any black stamp on my passport.
Thank you very much in advance