Installation
3
NXB-KNX KNX Communications Gateway
Installation
Wiring and Connections
The NXB-KNX is installed between the NetLinx Master and the KNX control bus, and passes NetLinx control
commands to the KNX control bus via 2-wire twisted pair cabling, as indicated in FIG. 2:
After you have completed the installation, consult the
Configuration
section on page 5.
Ethernet 10/100 Base-T RJ-45 Wiring Configuration
The table below describes the pinouts, signals, and pairing for the Ethernet 10/100 Base-T connector and cable.
FIG. 3 diagrams the RJ-45 pinouts and signals for the Ethernet RJ-45 connector and cable.
To avoid any damage to the electronic component, installation must be performed in
an ESD safe environment.
Do not connect power to the NXB-KNX until the wiring is complete.
FIG. 2
NXB-KNX installation
Ethernet Pinouts and Signals
Pin Signals
Connections Pairing
Color
1
TX +
1 --------- 1
1 --------- 2
White-Orange
2
TX -
2 --------- 2
Orange
3
RX +
3 --------- 3
3 --------- 6
White-Green
4
no connection
4 --------- 4
Blue
5
no connection
5 --------- 5
White-Blue
6
RX -
6 --------- 6
Green
7
no connection
7 --------- 7
White-Brown
8
no connection
8 --------- 8
Brown
FIG. 3
Straight-Through Wiring
KNX
Control
Bus
NXB-KNX
NetLinx Master
Ethernet 10/100
2-wire twisted pair
PoE injector
