ProSoft Technology PLX81-EIP-61850 - Manual (Page 152)

Glossary of Terms PLX8x-EIP-61850 ♦ Communication Gateway
User Manual Server to
IEC 61850 Client
Page 152 of 167 ProSoft Technology, Inc.
July 2, 2015
Interface Related Station Level Functions
Functions representing the interface of the SAS local station-operator HMI to a
remote control center Tele-Control Interface (TCI) or to the remote engineering
Tele-Monitoring Interface (TMI) for monitoring and maintenance purposes. These
functions communicate via the logical interfaces 1 and 6 with the bay level and
via logical interface 7 to technical services and via the remote control interface to
the outside world. Logically, there is no difference if the HMI is local or remote. In
the context of the substation, there exists at least a virtual interface for the SAS
at the boundary of the substation. The same is true for both the TCI and TMI.
These virtual interfaces may be realized in some implementations such as proxy
servers.
Internet Protocol
TCP/IP standard internet protocol defines the datagram that provides the basis of
connectionless packet delivery. It includes control and error message protocol
providing the equivalent functions to network services, layer 3, of the OSI
reference model for Open Systems Interconnection.
Interoperability
Ability of two or more IEDs from the same vendor, or different vendors, to
exchange information and use that information for correct execution of specified
functions.
ISO/IEC 8802-3
Communication technology according to ISO/IEC 8802-3.
L
Life Cycle
All phases from the feasibility/concept phase through to the final
decommissioning phase.
Link Layer
See Data Link Layer.
Local Area Network (LAN)
Communications network which typically covers the area within a building or
small industrial complex. In the context of the IEC 61850 standard, the area
within the substation.
Log
Record of chronologically ordered data, for example: events with time tags and
annotations.
Logical Connection
Communication link between logical nodes.