Multi-Point Interface: Difference between revisions

Revision as of 07:22, 23 March 2011

Revision as of 13:28, 22 September 2011

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The '''Multi -Point Interface -– Siemens''' ('''MPI''') is a [[Proprietary hardware|proprietary]] [[Interface (computer science)|interface]] of the [[Programmableprogrammable Logiclogic Controllercontroller]] SIMATIC S7 of the company [[Siemens AG | Siemens]].

It is used for connecting the stations programming (PG or [[Personalpersonal Computer | PC]]computer), operator consoles, and other devices in the SIMATIC family. This technology has inspired the development of [[Protocol (computing)|protocol]] [[Profibus]].

The MPI is based on the [[Technical standard|standard]] [[EIA-485]] (formerly RS-485) and works with a speed of 187.5 [[Baud | kBd]].

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The [[computer network|network]] MPI must have [[resistor | resistance]] at the end of the line generally included in the [[electrical connector|connector]] and activated by a simple switch.

Manufacturers using MPI technology offer a range of connections to a PC: MPI cards, [[Personal Computer Memory Card International Association | PCMCIA]] cards, [[Universal Serial Bus | USB]] adapters or [[Ethernet]].

(1) Article in original language : http://fr.wikipedia.org/wiki/Multi_Point_Interface_-_Siemens