Description
2.2 Setting up PROFINET
PROFINET with STEP 7 V15
32 Function Manual, 12/2017, A5E03444486-AH
Selection Guide for Switches
To use PROFINET with the RT class "RT", you can use any switch of "PROFINET
Conformance Class A" or higher. All switches of the SCALANCE product family meet these
requirements.
If you want to use PROFINET functions that provide an additional value, such as topology
recognition, diagnostics, device exchange without exchangeable medium/programming
device, you have to use a switch of the "PROFINET Conformance Class B" or higher.
To use PROFINET with the RT class "IRT", you must use a switch of "PROFINET
Conformance Class C". With switches of the SCALANCE product family, watch out for the
catalog feature "IRT PROFINET IO switch".
To select appropriate switches, we recommend the SIMATIC NET Selection Tool on the
Internet (http://support.automation.siemens.com/WW/view/en/39134641
).
Switches of the SCALANCE product family
Use the switches of the SCALANCE product family if you want to use the full scope of
PROFINET. They are optimized for use in PROFINET IO.
In the SCALANCE X device family, you will find switches with electrical and optical ports and
with a combination of both variants. SCALANCE X202-2IRT, for example, has two electrical
ports and two optical ports and supports IRT communication.
Beginning with the SCALANCE X200, you can configure, diagnose and address switches of
the SCALANCE X device series as PROFINET IO devices using STEP 7.
A router connects separated network segments with each other (e.g. management level and
control level). The volume of data volume must be coordinated with the services of the
respective network segment. A router also separates two networks and acts as a mediator
between both networks. It thus reduces the network load. Routing functionality is provided in
the SCALANCE X device family, with SCALANCE X300 or higher.
Communication devices on different sides of a router can only communicate with one
another if you have explicitly enabled communication between them via the router.
If you want to access manufacturing data directly from SAP, for example, use a router to
connect your Industrial Ethernet in the factory with the Ethernet in your office.
Note
If devices need to communicate beyond the limits of a network, you must configure the
router so
that it allows this communication to take place.
Information on routing with STEP 7 is available in the function manual Communication
(http://support.automation.siemens.com/WW/view/en/59192925
).
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