DX SY
STEM

19

7.1 Connecting with an Ethernet Crossover cable To connect a secondary level DX Central with an Ethernet Crossover cable: Connect the Ethernet Crossover cable connectors to the Ethernet ports of the 2 DX Centrals units, as illustrated in Figure 16.
POWER
www.minicom.com
ETHERNET
SERIAL
SERVICEI
0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER
POWER
www.minicom.com
ETHERNET
SERIAL
SERVICE
I0
1234
18192017
SERVER
5678
22232421
1234
6785
9101112
26272825
13141516
30313229
USER

DX Central

- 1st level

DX Central

- Secondary level

Cascade
To User
ports
To Server
ports
Ethernet
Crossover
cable
CAT5 cables
1 for each DX User in
the system
Up to 8 for 8 x 32
Up to 4 for 4 x 32
To
Ethernet
ports

Figure 16 Cascaded DX Central units connected with a Crossover cable

The table below shows the Ethernet RJ 45 Connector pin-out.
1
8

Pin Assignment Pin Assignment

1 TX + 5 Not connected

2 TX - 6 RX -

3 RX + 7 Not connected

4 Not connected 8 Not connected

7.2 Connecting to a network hub/switch To connect to a network hub/switch: Connect Ethernet Straight cables to the Ethernet ports of the DX Centrals units, as illustrated in Figure 17.