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10 Communication
IEC61850-4:
System and project management
IEC61850-5:
Communications and requirements for functions and device models
IEC61850-6:
Configuration description language for communication in electrical substations
related to IEDs
IEC61850-7-1:
Basic communication structure for substation and feeder equipment -
Principles and models
IEC61850-7-2:
Basic communication structure for substation and feeder equipment - Abstract
communication service interface (ACSI)
Basic communication structure for substation and feeder equ ipment –
IEC61850-7-3:
Common data classes
Basic communication structure for substation and feeder equipment –
IEC61850-7-4:
Compatible logical node classes and data classes
Specific Communication Service Mapping (SCSM) – Mappings to MMS (ISO
IEC61850-8-1:
9506-1 and ISO 9506-2) and to ISO/IEC8802-3
Specific Communication Service Mapping (SCSM) – Sampled values over
IEC61850-9-1:
serial unidirectional multi-drop point to point link
Specific Communication Service Mapping (SCSM) – Sampled values over
IEC61850-9-2:
ISO/IEC8802-3
IEC61850-10:
Conformance testing
These documents can be obtained from the IEC (http://www.iec.ch). It is strongly recommended
that all those involved with any IEC61850 implementation obtain this document set.
10.4.2 Communication Profiles
The PCS-9600 series relay supports IEC61850 server services over TCP/IP communication
protocol stacks. The TCP/IP profile requires the PCS-9600 series relay to have an IP address to
establish communications. These addresses are located in the submenu "Comm Settings", see
Section 7.6 for further details.
MMS Protocol
IEC61850 specifies the use of the Manufacturing Message Specification (MMS) at the upper
(application) layer for transfer of real-time data. This protocol has been in existence for a number
of years and provides a set of services suitable for the transfer of data within a substation LAN
environment. Actual IEC61850-7-2 abstract services and objects are mapped to MMS protocol
services in IEC61850-8-1.
Client/server
This is a connection-oriented type of communication. The connection is initiated by the client, and
communication activity is controlled by the client. IEC61850 clients are often substation computers
running HMI programs or SOE logging software. Servers are usually substation equipment such
as protection relays, meters, RTUs, instrument transformers, tap changers, or bay controllers.
Please note that gateways can be considered as clients and servers subject to the communication
10-8
Date: 2014-04-08
PCS-9611 Feeder Relay
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