Moxa Technologies Switch EDS-508 Manuel d'utilisateur télécharger pdf (Page 36)

MOXA EtherDevice Switch Hardware Installation Guide

4-4

On FX port’s 100 Mbps is active

Blinking

Data is being transmitted at 100 Mbps

100M

(FX)

GREEN

Off 100BaseFX port is inactive

Auto MDI/MDI-X Connection

The Auto MDI/MDI-X function allows users to connect MOXA

EDS-508’s 10/100BaseTX ports to any kind of Ethernet device, without

paying attention to the type of Ethernet cable being used for the

connection. To understand the meaning of this statement, you simply

need to remember that there are two types of Ethernet ports, and two

types of Ethernet cables. See the 10/100BaseTX Ethernet Port Connection

section from Chapter 3 for detailed Pinout and Cable Wiring diagrams. In

this section, we give a short primer of the terminology, and indicate

which cable should be used to connect which types of ports.

There are two types of Ethernet port in use. The first type is called an

MDI (Medium Dependant Interface) port, and is what you find on your

PC’s NIC (Network Interface Card). The second type is called an MDI-X

(Medium Dependant Interface, Crossover) port, and is the type of port

found in a standard HUB or switch. For this reason, we often refer to an

MDI port as being NIC-type, and an MDI-X port as being

HUB/Switch-type.

There are also two types of Ethernet cable in use. The first type is a

straight-through cable, and the second type is a cross-over cable. The

general connection rules are:

?? A straight-through cable is used to connect dislike ports:

MDI ? MDI-X.

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Moxa Technologies Switch EDS-508 Manuel d'utilisateur Page 36