To protect your telescoop and camera setup from crashing with the mount once the mount is past the meridian it's recommended to set meridian limits. When the mount reaches the limits it will stop guiding and/or can park your scope and/or can start a meridian flip.
A good video which explain how to set meridian limits through EQASCOM can be found
here.Disabling meridian limits in EQASCOM is possible by checking out the "mount limitsbox".
