Specifications

Installation
3
NXB-KNX NetLinx KNX Interface
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. 1:
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. 2 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. 1 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. 2
Straight-Through Wiring
KNX
Control
Bus
NXB-KNXNetLinx Master
Ethernet 10/100 2-wire twisted pair
PoE injector