Siemens SIMATIC ET 200AL, System Manual

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Description
2.2 Setting up PROFINET
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
33
Router
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 ).
2.2.2 Cabling technology
Cables for PROFINET
Electrical and optical cables are available for PROFINET. The type of cable depends on the
data transfer requirements and on the ambient conditions.
Simple method for the prefabrication of twisted pair cables
When you set up your PROFINET system, you can cut the twisted-pair cable to the required
length on site, strip it with the stripping tool (for Industrial Ethernet), and fit the Industrial
Ethernet Fast Connect RJ45 plugs using the cut-and-clamp method. For more information on
installation, refer to the installation instructions in the "SIMATIC NET Industrial Ethernet
Network Manual" ( http://support.automation.siemens.com/WW/view/en/8763736 ).
Note
A maximum of four plug-in pairs are allowed between two switches per Ethernet path.