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Appendix B: Terms
and Definitions
Many terms and denitions that are specic to the SCADA and control systems
community may conict with other industrial terms, denitions, acronyms, etc. The
following glossary is meant to provide a useful reference of terms, denitions, and
acronyms that are specic to this community. Please note that several of the glossary
items listed may be indicative of other communities, such as information technology
(IT) (e.g., “local area network” or “LAN” is IT-specic).
*
AC Drive: Alternating current drive; synonymous with Variable frequency drive
(VFD).
Application server: A computer responsible for hosting app