Siemens SIMATICS PCS7 brochure Topologies, Basic topologies, Media versions

© Siemens AG 2011

Topologies

Basic topologies

Differently structured telecontrol networks can be implement- ed in the wide area network (WAN) based on the following four basic topologies.

Media versions

Depending on the support provided by the selected telecon- trol protocol, various transmission media are available for these basic topologies, e.g. dedicated line, private wireless networks, mobile radio networks, dial-up networks (wire- less/landline), DSL over Internet.

Some of these media versions are shown in the example of the star topology.

Point-to-	Multi-point
point

Star via	Star via
dedicated line	wireless

Star

Dial-up

network via

wireless

Ring

Star via Internet

Combinations of basic topologies and media versions

Through a combination of several basic topologies of the same or different media versions, it is additionally possible to design more complex network topologies, even with redun- dant communication paths.

This allows adaptation to the respective local conditions and to the existing infrastructure.

Star +	Nodes	Path	Path
multi-point		redundancy,	redundancy,
		1 medium	2 media

Complex network structure,	Complex network structure,
example of SINAUT ST7/DNP3		example of IEC 870-5-104
communication			communication

SIMATIC PCS 7 TeleControl system architecture 9