Manufacturing Message Specification

The Standard Manufacturing Messaging Specification (MMS ) is used for object-oriented exchange of data in the production area and is used for coupling of distributed automation systems. It is specified in accordance with ISO standard 9506 ( message formats for production purposes).

MAP / MMS was created in the 1980s as a project at General Motors with the aim of achieving an integration of various manufacturing systems through a unified communication interface. This work culminated in 1988 in the ISO 9506 standard. Important features of MAP / MMS are:

  • The general utility in a variety of applications. So-called ' Companion Standards contain detailed specifications for specific device types ( NC, robots, etc. ), but only to build on the general MMS services.
  • Defined objects (variables, programs, events, etc.) and their services
  • An object abstracts the implementation-dependent features (eg, memory addressing); the icon-based access is implemented on the server side
  • The telegram definition MMS is detached from the transport protocol used and the network physics (eg series with ADLC, Ethernet over OSI and TCP / IP)
  • The transfer of syntactic information for data decoding in the message, thus is a browsing of the server objects possible
  • Increase the data throughput by matching power physics (eg 100BaseT )
  • Low costs by using standard components from the office (network cards, routers, address assignment)

The standard is the basis for the transmission protocols IEC 61850 and IEC 60870-6 ( TASE.2 ).

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