Autonegotiation
Autonegotiation means the automatic detection of the functionality of the port at the opposite
end. Using autonegotiation, repeaters or end devices can detect the functionality available at
the port of a partner device allowing automatic configuration of different types of device. With
autonegotiation, two components connected to a link segment can exchange parameters and
set themselves to match the supported communication functionality.
Note
The SCALANCE X204RNA EEC (PRP and HSR and PRP/HSR) operates permanently in
autonegotiation mode and can therefore be connected to other devices that either also use
the autonegotiation mode or the "100 Mbps mode FD (full duplex)".
Note
The SCALANCE X204RNA EEC (PRP and HSR) is a plug-and-play device that does not
require settings to be made for commissioning.
MDI / MDIX autocrossover function
The advantage of the MDI /MDIX autocrossover function is that straight-through cables can
be used throughout and crossover Ethernet cables are unnecessary. This prevents
malfunctions resulting from mismatching send and receive wires. This makes installation much
easier for the user.
The SCALANCE X204RNA EEC (PRP and HSR) supports the MDI / MDIX autocrossover
function.
Note
Please note that the direct connection of two ports on the switch or accidental connection over
several switches causes an illegal loop. Such a loop can lead to network overload and network
failures.
Transmission speed
The transmission speed of the Fast Ethernet ports is 100 Mbps full duplex.
Descriptions of the products
4.5 SCALANCE X204RNA EEC
SCALANCE X-200RNA
Operating Instructions, 10/2016, C79000-G8976-C342-04
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Summary of Contents for SCALANCE X-200RNA
Page 6: ...Table of contents SCALANCE X 200RNA 6 Operating Instructions 10 2016 C79000 G8976 C342 04 ...
Page 12: ...Introduction SCALANCE X 200RNA 12 Operating Instructions 10 2016 C79000 G8976 C342 04 ...
Page 16: ...Safety notices SCALANCE X 200RNA 16 Operating Instructions 10 2016 C79000 G8976 C342 04 ...
