Westermo MDI-112-F4G - Manual (Page 12)

8
2.4 Wiring Earth Ground
To ensure the system will not be damaged by noise or any electrical shock, we
suggest you to make exact connection with switch with Earth Ground.
For DC input, loosen the earth ground screw using a screw driver; then tighten
the screw after earth ground wire is connected.
2.5 Wiring Fast Ethernet Ports
The Fast Ethernet ports support 10Base-T and 100Base-TX, full or half duplex
modes. All the Fast Ethernet ports will auto-detect the signal from connected
devices to negotiate the link speed and duplex mode. Auto MDI/MDIX allows
users to connect another switch, hub or workstation without changing straight
through or crossover cables.
Note that crossover cables simply cross-connect the transmit lines at each end to
the received lines at the opposite end.
Straight-through Cabling Schematic Cross-over Cabling Schematic
Note that Ethernet cables use pins 1, 2, 3, and 6 of an 8-pin RJ-45 connector. The
signals of these pins are converted by the automatic MDI-X function, as shown in
the table below:
Pin MDI-X Signals MDI Signals
1 RD+ TD+
2 RD- TD-
3 TD+ RD+
6 TD- RD-
Connect one side of an Ethernet cable into any switch port and connect the other
side to your attached device. The LNK LED will light up when the cable is correctly
connected. Refer to the LED Indicators section for descriptions of each LED
indicator. Always make sure that the cables between the switches and attached
devices (e.g. switch, hub, or workstation) are less than 100 meters (328 feet).
The wiring cable types are as below.