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Quick Start Guide

NetLinx Hub Cards and Modules

 NXC-NH/HS/HE

Overview - NetLinx Hub Cards and Modules

NetLinx Hub Cards distribute ICSP (Internet Control System Protocol) 
throughout a NetLinx control system. ICSP packets can move easily between 
different kinds of networks including Ethernet, Internet, and the NetLinx (ICSNet) 
control bus.

The NetLinx Hub Cards covered in this document are:

NXC-NH ICSNet Hub Card (

FG2060

)

NXC-HS ICSHub Server Card (

FG2061

)

NXC-HE ICSHub Expander Card (

FG2062

)

The NXS-MHS Modules (

FG2009

) provide enclosures for the Hub Cards. The 

NetLinx ICSNet control network branches from a NetLinx Master to ICSNet 
devices via ICSHub data links. An ICSNet Hub Card can then distribute data and 
power to up to eight system devices through multiple ICSNet wiring runs. Each 
ICSNet wiring run can support up to 16 devices connecting from one to another, 
in a daisy-chain fashion. FIG. 1 shows a sample application using a connection 
from the Master to the ICSNet Hub Card, then to external ICSNet devices.  .

ICSHub and ICSNet links can extend up to 1,000 feet (304.8 m). Each link is fully 
regenerated at every ICSHub connection to allow systems to connect over 
virtually unlimited distances. Hub Cards can be installed in an NXI (NetLinx 
Integrated Controller), NXF (CardFrame), or NXM-MHS (Module) for stand-alone 
operation.

Specifications

NXC-NH ICSNet Hub Card

The NXC-NH ICSNet Hub Card provides eight ICSNet ports. FIG. 2 shows its 
rear panel components. 

This card connects to external ICSNet devices. 

  

Rear Panel LEDs

FIG. 3 shows the layout of the ICSNet and ICSHub LEDs.

NXC-HS ICSHub Server Card

The NXC-HS Server Card provides nine ICSHub OUT ports for connecting 
NetLinx Controllers and Hubs, and one ICSHub IN port. FIG. 4 shows its rear 
panel components. This card connects to either ICSNet Hubs or other Hub 
servers.   

FIG. 1  

Sample ICSNet Hub Card Daisy-chain configuration

Specifications

Power Requirements:

• NXC-NH - 180 mA @ 12 VDC
• NXC-HS - 160 mA @ 12 VDC
• NXC-HE - 110 mA @ 12 VDC

PWR connector/LED:

2-pin 12 VDC power connector (green); supply depends on load.
Green LED lights to indicate power.

ICSNet OUT (NXC-NH):

Eight RJ-45 connectors that supply power and data to external 
ICSNet devices. Max. current draw = 500 mA.
• Yellow LEDs (one per port) blink when sending data on the 

associated port(s).

ICSHub OUT (NXC-HS):

Nine RJ-45 ports for ICSHub data.
• Yellow LEDs blink when receiving data on the associated OUT 

ports.

ICSHub IN: NXC-HS

RJ-45 connector that supplies data to other NetLinx Controllers and 
Hubs, and wired using a daisy-chain configuration. The OUT port of 
one ICSHub must be connected to the IN connector of a 
downstream ICSHub Module or Card.
• Yellow LED blinks when receiving data.

Specifications (Cont.)

ICSHub IN/OUT:

NXC-NH

• RJ-45 connectors that supply data to other ICSHubs connected 

to the Master Card. The OUT port of one ICSHub must be 
connected to the IN connector of a downstream ICSHub Module 
or card.

• Yellow LEDs blinks when receiving data on the associated IN/

OUT ports.

NXC-HE

• RJ-45 connectors that supply data to other Hubs connected to 

the Master Card, and wired using a daisy-chain configuration. 
The ICSHub OUT connector of one Hub must be connected to 
the ICSHub IN connector on the downstream Hub.

• Yellow LEDs blink when receiving data on the associated IN/OUT 

ports.

Optional Accessories:

NXM-MHS module

Metal with black matte finish·
Plastic gray faceplate with translucent viewing window.

12 VDC power supply

• PS2.8 (

FG423-05

)

• PSN6.5 (

FG423-41

)

Rack Kit

AC-RK Accessory (

FG515

)

Dimensions (HWD):

1.5" x 5.0" x 8.8" (45 mm x 127 mm x 224 mm)

Weight:

26 oz (737 g)

FIG. 2  

NXC-NH Card (shown mounted in NXM-MHS Module - rear view)

FIG. 3  

Layout of the ICSNet and ICSHub IN/OUT LEDs

FIG. 4  

NXC-HS Card/Module (shown mounted in NXM-MHS Module - rear view)

PWR

ICSNet

ICSHub

OUT

IN

12VDC

NXC-NH

ICSNet Hub

ICSHub IN/OUT 
connectors and LEDs

Power Supply indicator LED (green)

12 VDC Power Supply connector

ICSNet OUT connectors and LEDs

ICSNet

OUT

ICSHub

IN

ICSHub IN LED 
(yellow): lights to 
indicate data transfer 
activity on this port

ICSNet LEDs (yellow):

light to indicate data

output activity on

these ports

ICSHub IN LED (yellow): 
lights to indicate data 
input activity on this port

ICSHub Server

NXC-HS

12VDC

PWR

ICSHub OUT

ICSHub

OUT

IN

ICSHub

IN/OUT 

connectors 

and LEDs

12 VDC Power Supply connector

Power Supply indicator LED (green)

ICSHub OUT connectors and LEDs

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