ProSoft Technology PLX8X-MNET-61850 User Manual

Page 161

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PLX8x-MNET-61850 ♦ Communication Gateway

Reference

Modbus TCP/IP to IEC 61850

User Manual

ProSoft Technology, Inc.

Page 161 of 228

May 14, 2014

6.4.6 MMS

Part 8-1 of the protocol specification details the Specific Communication Service
Mapping (SCSM), which is mapping of data to MMS (ISO 9506-1 and ISO 9506-
2). The IEC-61850 driver is fully compliant to the MMS requirement.

In terms of the seven-layer OSI model, the new MMS stack looks like this:

Application

Association Control Service Element ( ACSE )- ISO 8649/8650

Presentation

Connection Oriented Presentation - ISO 8822/8823
Abstract Syntax Notation (ASN)- ISO 8824/8825

Session

Connection Oriented Session - ISO 8326/8327

Transport

ISO transport over TCP - RFC 1006
Transmission Control Protocol (TCP) - RFC 793

Network

Internet Control Message Protocol (ICMP) - RFC 792
Internet Protocol (IP)-
Address Resolution Protocol (ARP)- RFC 826

Link

IP datagrams over Ethernet - RFC 894
MAC - ISO 8802-3 [Ethernet]

Physical

Ethernet

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