ProSoft Technology PLX8X-MNET-61850 - Manual (Page 205)

PLX8x-MNET-61850 ♦ Communication Gateway Glossary of Terms
Modbus TCP/IP to IEC 61850 User Manual
ProSoft Technology, Inc. Page 205 of 228
May 14, 2014
Glossary of Terms
Symbols & Numeric
(n)-Layer
Any specific layer.
(n)-Protocol
Set of rules and formats (semantic and syntactic) which determines the
communication behavior of (N)-entities in the performance of (n)-functions.
(n)-Protocol Data Unit
Unit of data specified in an (n)-protocol and consisting of (n)-protocol-control-
information and possibly (n)-user-data.
A
Access Point
Communication access point to an IED. This may be a serial port, an Ethernet
connection, or a Client or server address dependent on the stack being used.
Each access point of an IED to a communication bus is uniquely identified. Each
server has only one logical access point.
Active master
Interface allowing communication with IEDs (Intelligent Electronic Devices) that
use any protocol. The interface works by standardizing attributes of all possible
functions, so that these can be mapped to functions used by the IED.
Application and Transport Profiles (A-Profile and T-Profile)
Set of protocols for a specific purpose.
Application Layer
Layer 7 in the OSI reference model. It is the OSI layer closest to the end user,
providing an interface between the Open Systems Interconnection environment
and the end user's application.
Association
Conveyance path established between a Client and a server for the exchange of
messages.
Attribute
Named element of data which has a specific type.