Communication Protocol
314 PRS-7367
IEC 61850-9-1: Specific Communication Service Mapping (SCSM) – Sampled values over
serial unidirectional multidrug point to point link
IEC 61850-9-2: Specific Communication Service Mapping (SCSM) – Sampled values over
ISO/IEC 8802-3
IEC 61850-10: Conformance testing
These documents can be obtained from the IEC (http://www.iec.ch). It is strongly recommended
that all those involved with any IEC 61850 implementation obtain this document set.
9.4.2 Communication Profiles
The PRS-7000 series relay supports IEC 61850 server services over TCP/IP communication
protocol stacks. The TCP/IP profile requires the PRS-7000 series to have an IP address to
establish communications.
9.4.2.1 MMS protocol
IEC 61850 specifies the use of the Manufacturing Message Specification (MMS) at the upper
(application) layer for transfer of real-time data. IEC 61850-7-2 abstract services and objects are
mapped to actual MMS protocol services in IEC61850-8-1.
9.4.2.2 Client/server
The core ACSI defined by IEC 61850 is mapped to manufacturing message specifications (ISO
9506-1, ISO 9506-2). This is a connection-oriented type of communication. The connection is
initiated by the client, and communication activity is controlled by the client.
The rules to map the ACSI services supported by PRS-7000 series units to the MMS are as shown
in following table
Table 9.4-1 Mapping of ACSI to MMS service
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