PROFIBUS networks
1.1 Local area networks in manufacturing and process automation
PROFIBUS Network Manual
10 System Manual, Edition 04/2009, C79000-G8976-C124-03
The basis of such communication systems is provided by local area networks (LANs) that
can be implemented in one of the following ways depending on certain conditions:
● Electrically
● Optically
● Wireless
● Combined electrical/optical/wireless
● Electrically, intrinsically safe
1.1.2 Overview of the SIMATIC NET system
SIMATIC NET
SIMATIC NET is the name of the communication networks connecting SIEMENS
programmable controllers, host computers, work stations and personal computers.
SIMATIC NET includes the following:
● The communication network consisting of the transmission medium, the corresponding
connection and transmission components, and the corresponding transmission methods
● Protocols and services used to transfer data between the devices listed above
● The modules of the automation system or computer that provide the connection to the
LAN (communications processors "CPs" or "interface modules").
To handle a variety of tasks in automation engineering, SIMATIC NET provides different
communication networks to suit the particular situation.
The topology of rooms, buildings, factories, and complete company complexes and the
prevalent environmental conditions mean different requirements. The networked automation
components also make different demands on the communication system.
To meet these various requirements, SIMATIC NET provides the following communication
networks complying with national and international standards:
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