Network
All IO devices connected via switches are located in one and the same network. All IO devices
in a network can communicate directly with one another.
The subnet mask is identical for all IO devices in the same network.
A network is physically limited by a router.
Note
If IO devices are to communicate with one another across network boundaries, you must
configure the router in such a way that it permits this communication.
The communication from PROFINET IO functions exclusively within a network. You have the
option of connecting various PROFINET IO networks via PN/PN coupler.
Additional information
You can find more detailed information in the SIMATIC NET manual Communication with
SIMATIC (https://support.industry.siemens.com/cs/ww/en/view/1254686).
You should also read the PROFINET Installation Guideline from the PROFIBUS User
Organization (http://www.profibus.com/download/).
You can find basic information in the manual SIMATIC NET Twisted Pair and Fiber Optic
Networks (https://support.industry.siemens.com/cs/ww/en/view/8763736).
Plant planning
4.1 Topology
ET 200SP HA Distributed I/O system
24 System Manual, 08/2019, A5E39261167-AD
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