CAT5/6 standard cables have eight wires (four twisted pairs), as shown in the diagram
below. Wire colors may differ from one cable to another. You can use either wiring
standard, as long as both sides of the cable have the same pin-out and color-coding.
RJ45 Pin #
Wire Color
(1)
10Base-T Signal
100Base-TX Signal
T568B
T568A
1
White/Orange
White/Green
T
2
Orange
Green
Transmit-
3
White/Green
White/Orange
4
Blue
Blue
Reserved
5
White/Blue
White/Blue
Reserved
6
Green
Orange
Received-
7
White/Brown
White/Brown
Reserved
8
Brown
Brown
Reserved
Figure 15: Standard cable wiring
6. Use a pre-crimped cable to connect via gland #1 to the RJ45 plug on the inverter's
communication board or, if using a spool of cable, connect as follows:
a. Insert the cable through gland #1.
b. Remove the cable’s external insulation using a crimping tool or cable cutter and
expose eight wires.
c. Insert the eight wires into an RJ45 connector, as described in
d. Use a crimping tool to crimp the connector.
e. Connect the Ethernet connector to the RJ45 port on the board.
(1)The connection does not support RX/TX polarity change. Supporting crossover Ethernet cables depends on the switch
capabilities.
Chapter 3: Connecting the Firefighter Gateway to the Installation
26
Firefighter Gateway Installation Guide MAN-01-00113-1.4