Table of Contents
Advertisement
06.91
1
General
Communication systems are used in various areas and, depending on their application and
environment, they must meet specific quality requirements in order to fulfil their tasks.
Local communication networks are used in three major fields of application:
•
Laboratory
•
Factory
•
Office
This description deals only with communication in the factory environment via industrial bus
and serial connections.
Industrial bus according to MAP
Let us briefly review the history of the MAP industrial bus. General Motors (GM) approached
all electronics manufacturers at the end of the seventies asking them to cooperate. GM have
worked on LANs since 1979. As early as 1980 they started to develop the MAP protocol.
During the NCC 84 US computer show in July 1984, GM introduced a local area network on
the basis of a broad band token bus. They showed a MAP network up to the fourth (transport)
layer, using different computer and control systems of IBM, Hewlett Packard, Digital
Equipment, Motorola, Allen Bradley, Gould and Concord Data Systems. At the September
1985 Autofact in Detroit, Siemens was represented on the bus with a programmable controller
together with other companies. The SIMATIC S5-150S was connected to the token bus via a
301 EU interface module and the 310 Intel development system.
SINEC H1
The SINEC H1 industrial bus (ETHERNET) has been implemented by the Siemens Automation
Group. This bus ensures the heterogeneous integration of Siemens programmable controllers.
A uniform protocol is necessary to enable communication to take place with different
automation equipment such as numerical controls, personal computers, process control
computers etc. in a production automation environment.
For SINEC H1 the framework protocol architecture has been implemented using international
standards in the transport-oriented layers (1 to 4) and the SINEC-AP1 Siemens standard in the
application-oriented layers (5 to 7).
© Siemens AG 1989 All Rights Reserved
SINUMERIK 840/880 (PJ)
6FC5 197-0AB20-0BP0
1 General
1–1
Advertisement
Table of Contents
