Lenze I/O system 1000 - Page 466

Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17 466
9 PROFINET communication
9.1 About PROFINET
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Topology
Line: For the line structure, all nodes are connected in series. The line structure is achieved via
switches which have already been implemented in the PROFINET devices. If a node fails,
communication over the failed node is not possible.
Star: When nodes are connected to a switch with more than 2 PROFINET interfaces, a star-shaped
network topology is automatically formed. If a single PROFINET device fails, this does not cause a
complete network failure as in case of the other structures. The switch failure only causes a failure
of the sub-network.
Ring: In order to increase the availability, you can connect both open ends of a line structure via a
switch. When you parameterise the switch as redundancy manager, it will make the data be
transmitted via an intact network connection in the case of power failure.
Tree: When several star-shaped structures are interconnected, a tree-shaped network topology is
formed.
GSDML file
Lenze provides you with a GSDML file for your IO-Device. This file is either located on the enclosed
data medium or in the download area of www.lenze.de.
Install the GSDML file in your project planning tool. More information on how to install the GSDML
file can be found in the manual of your project planning tool. For configuration in your project
planning tool, the GSDML file contains all system modules as XML data.
Addressing
In contrast to the PROFIBUS address, each device in PROFINET can be identified non-ambiguously via
its PROFINET interface:
• IP address or MAC address
• Device name
Transmission medium
PROFINET is Ethernet-compatible according to the IEEE standards. The PROFINET IO field devices are
exclusively connected via switches as network components. It is either carried out as a star-shaped
structure via multiple port switches or line-shaped by means of switched implemented in the field
device.