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myBOX USER MANUAL

4.1.Connecting to networks via ethernet interface #

The Ethernet communication channel allows your device to be connected to a local area network for various devices, providing 10 Mbps/100Mbps transfer rate. Shielded 6E category twisted-pair 10/100Base-T cables with RJ-45 connectors are only supported. The maximum cable length between the Ethernet port of the device and the 10/100Base-T port on an Ethernet router/switch (without repeaters or fiber) should be 100 m (323 ft). However, in industrial application the cable length should be kept to a minimum.

The connections are made directly from the device to an Ethernet router or switch via 8-wire twisted-pair straight-through cables. The following Ethernet settings are supported (mode selection is automatic):

  • 10 Mbps half duplex or full duplex
  • 100 Mbps half duplex or full duplex

The Ethernet cabling with straight-through method is recommended as below.

PLEASE MAKE SURE YOU DO NOT MAKE AN INCORRECT CONNECTION!

Pin

Pin name

Cable color

1

Tx+ Transmit Data

Orange/White

2

Tx– Transmit Data

Orange

3

Rx+ Receive Data

Green/White

4

No used by 10/100Base-T

Blue

5

No used by 10/100Base-T

Blue/White

6

Rx- Receive Data

Green

7

No used by 10/100Base-T

Brown/White

8

No used by 10/100Base-T

Brown

 

4.1.1

 

Useful Information on Ethernet Wiring:

The most common wiring for RJ-45 cables is the “straight-through” cable, which means that the pin 1 of the plug on one end is connected to the pin 1 of the plug on the other end. The straight through RJ-45 cable is commonly used for connecting network cards with hubs on 10Base-T and 100Base-Tx networks. On network cards, the pair 1-2 serves as a transmitter, and the pair 3-6 as a receiver. The other two pairs are not used. On hubs the pair 1-2 is the receiver and 3-6 the transmitter. It may be best to wire your cables with the same color sequence. In this cable layout, all pins are wired one-to-one to the other side. The pins on the RJ-45 connector are assigned in pairs and every pair carries one differential signal. Each line pair has to be twisted.

In a small network with only two computers the use of the “crossover” RJ-45 cable is necessary, where the transmitting and receiving lines on both RJ-45 connectors are cross connected. The color-coding for the crossover RJ-45 cable has been defined in the EIA/TIA 568A standard. In the crossover cable layout you should remember that one end is normal and the other end has the crossover configuration.

 

4.1.2

 

 

4.1.3

 

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