Can any body tel me whether the Panel View gets time from PLC or use its Real time clock, if its use its own can we change this time for Time synching purpose?
If you can create tags for (any or all of) Month, Day, Year, Hour, Minute, Second, then yes, you can have the PanelView+ sync to those tags (again, under Project, Global Settings).
In other words, if you can display external time/date information on a screen, you can have the PV+ Sync to them.