Get the S95 Standards from ISA
All parts are available from ISA via printed copy or downloadable electronic copy. Or you can order a CD with all parts on it.
ANSI/ISA-95.00.01-2000 - Enterprise-Control System Integration, Part 1
Models and terminology.
ANSI/ISA-95.00.02-2001 - Enterprise-Control System Integration, Part 2
Object Model Attributes.
Get a CD with all S95 parts
Also includes seven ISA technical papers on manufacturing enterprise systems.