Table of Contents
Advertisement
Description of the device
4.4 TP ports (twisted pair)
Note
Permitted cable lengths
TP cords or TP-XP cords with a maximum length of 10 m can be connected to the TP port with
the RJ-45 jack.
With the IE FC cables and IE FC RJ-45 plugs 180, an overall cable length of a maximum of 100
m is permitted between two devices depending on the cable type.
Autonegotiation
With the autonegotiation mechanism, repeaters and end devices can automatically determine
the transmission speed and the transmission mode of the partner port. This makes it possible
to configure different devices automatically.
Two components connected to a link segment can exchange information about the data
transfer and can adapt their settings to each other. The mode with the highest possible speed
is set.
Note
Devices not supporting autonegotiation must be set permanently to 100 Mbps half duplex or
10 Mbps half duplex.
Note
The IE switches of the SCALANCE X-100 product line are plug-and-play devices that require
no settings during commissioning.
Auto polarity exchange
If the pair of receiving cables is connected incorrectly (RD+ and RD- interchanged), the polarity
is adapted automatically.
MDI / MDI-X autocrossover function
With the MPI/MDI-X autocrossover function, the send and receive contacts of an Ethernet port
are assigned automatically. The assignment depends on the cable with which the
communications partner is connected. This means that it does not matter whether the port is
connected using a patch cable or crossover cable. This prevents malfunctions resulting from
mismatching send and receive wires. This makes installation much easier for the user.
24
Operating Instructions, 02/2019, A2B00060666-10
SCALANCE X-100
Advertisement
Table of Contents
