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4 System description

4.3 Network topologies

Lenze · Controller-based Automation - Visualisation · System Manual · DMS 1.5 EN · 04/2014 · TD17

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Functions

• Access to Siemens S7-300/400 control systems via PROFIBUS (MPI)

• Access to VIPA control systems via PROFINET (RFC1006)

• Visualisation variables can be imported from STEP7®

From the view of wiring, a PROFINET network is not a bus in the true sense, but a "switched"

Ethernet with point-to-point connections.

• This structure is described below. The real time data transfer runs via the connections printed in

violet.

• The connections printed in yellow are purely used for Ethernet data transfer. Data are also

transferred via PROFINET without real time interferences.

 Note!

The data of the PROFINET field devices connected cannot be accessed directly! As an

alternative, the variables of the field devices should be accessed via the control system.

Access to the control system and the field devices connected

( 28)

 For more information regarding the use of PROFINET®, please see the following sets of

documentation:

• "Controller-based Automation" system manual

• "Controller-based Automation - PROFINET®" communication manual

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Lenze Controller-based Automation Manuale Utente Pagina 44