LV Mastery Bringing Your LabVIEW™ Capabilities to Light

sir,
myself M.E Instrumentation student from VIT,Doing my pg project from NCL.I want to do serial communication through labview.i have configured the serial parameters ,written the data in visa write given delay and now want to read the data that was transmitted.for that i have used a visa read.after visa read the session was closed by using visa close.there are no errors but still i dont get any output.can u plz shed some light on this.
ms k k kulkarni