Description
3.3 System description of SCALANCE X-400
SCALANCE X-400
Operating Instructions, 06/2015, C79000-G8976-C186-12
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Ports of SCALANCE X-400
Ports
IE Switches X-400 provide you with electrical ports that can be used as gigabit and ring
ports. The expansion with media modules provides you with additional optical ports.
By using an extender module, you can increase the number of ports on the
SCALANCE X414-3E by a maximum of eight ports.
10Base-T / 100Base-TX
Transmission rate
The transmission rate of the electrical ports is 10 Mbps or as Fast Ethernet ports 100 Mbps.
The transmission mode for 10Base-T / 100Base-TX is specified in the IEEE 802.3i / IEEE
802.3u standards of the Institute of Electrical and Electronic Engineers.
Autonegotiation (automatic detection of the best transmission modes) is default. The order in
which they are selected is:
● 100Base-TX full duplex
● 100Base-TX half duplex
● 10Base-T full duplex
● 10Base-T half duplex
Two communication modes are possible:
● Half duplex
Two-way alternate transmission mode - it is only possible to either send or receive over
the interfaces at any one time.
● Full duplex mode
Two-way simultaneous - both communication partners can send and receive at the same
time.
Connections to other switches can use half or full duplex; connections to hubs are possible
only in half duplex mode.
Data transmission at 10 Mbps and at 100 Mbps is over two wire pairs (pin 1, 2, 3, 6) of the
twisted pair cable. For 10 Mbps, at least a category 3 (Cat 3) and for 100 Mbps, at least a
four-wire (2x2) category 5 (Cat 5) cable is necessary.
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