What name is given to an abeam waypoint in the FMS?
From the Thales Pilot Guide:


  If ABEAM PTS are desired:
  ABEAM PTS [3R] .......... Confirm/Press
  If Option 1 is defaulted, ABEAM PTS is displayed yellow, if not press [3R].  
  
  ND shows direct track (dashed yellow), as entered, superimposed on existing ACTIVE F-PLN.
  Abeam WPTs are named ABxxxxx, xxxxx representing the first five characters of the relative WPTs.
  Ex: ABADAIB, ABBOKNO, ABDEVRO  


Honeywell FMS is different:


  Abeam Points (ABEAM PTS)  
  
  Push -  
  
  
  creates place bearing distance waypoint on the Direct To leg abeam
  the bypassed waypoint if the bypassed waypoint was a database
  airport, navaid, NDB, or waypoint
  creates latitude/longitude waypoint on the Direct To leg abeam the
  bypassed waypoint if the bypassed waypoint was a
  latitude/longitude waypoint
  


So in the Honeywell FMS the abeam points will use the Place Bearing Distance name or the Lat/Lon name depending on the type of original waypoint.