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CHAPTER2 Ethernet Unit
2-14-3 UTP (STP) cable

The Ethernet cables are standardized by ANSI/TIA/EIA568A. To avoid miswiring and

malfunction, we recommend using cables conforming to this standard. When using

10BASE-T cables, it must have transmission characteristics of category 3 or higher.

■ Straight-through cable

Use this cable to connect the HUB to the controller and other party’s device.

■ Crossover cable

Use this cable to connect the controller directly with other party’s device. This cable is

also used to connect HUBs in cascade(when HUBs have a cascade port).

Signal name
TD+
TD-
RD+
Not use
Not use
RD-
Not use
Not use
Signal name
TD+
TD-
RD+
not use
not use
RD-
Not use
Not use
Pin No
1
2
3
4
5
6
7
8
Pin No
1
2
3
4
5
6
7
8
Color
Green/White
Green
Orange/White
Blue
Blue/White
Orange
Brown/White
Brown
Color
Green/White
Green
Orange/White
Blue
Blue/White
Orange
Brown/White
Brown
* Pins 4, 5, 7, 8 are not used for 10BASE-T.
* Straight-through cable also connects between T-568B and T-568B.
Between T-568A Between T-568A
Signal name
TD+
TD-
RD+
Not use
Not use
RD-
Not use
Not use
Signal name
TD+
TD-
RD+
not use
not use
RD-
Not use
Not use
Pin No
1
2
3
4
5
6
7
8
Pin No
1
2
3
4
5
6
7
8
Color
Green/White
Green
Orange/White
Blue
Blue/White
Orange
Brown/White
Brown
Color
Orange
/White
Orange
Green
/White
Blue
Blue/White
Green
Brown/White
Brown
* Pins 4, 5, 7, 8 are not used for 10BASE-T.
Between T-568A Between T-568B