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Last Revised: 2014-11-06 07:15:07.0

NI 9795
C Series WSN Gateway

Elegantly add wireless I/O to your NI CompactRIO system

2.4 GHz, IEEE 802.15.4 radio to communicate with up to 36 distributed WSN nodes
per chassis

Insert into any available slot in your CompactRIO chassis (one gateway per chassis
currently supported)

Up to 200 m outdoor range with line of sight

Data from distributed WSN measurement nodes is available from the host or within
your CompactRIO real-time application

Overview
The National Instruments wireless sensor network (WSN) platform delivers low-power measurement nodes that offer industrial certifications, reliable networking, and optional
weatherproof outdoor enclosures for long-term, remote monitoring applications.
Using the NI 9795 C Series WSN gateway, you can elegantly combine the benefits of distributed WSN monitoring with high-performance CompactRIO measurement and control
systems. With this flexibility, you can create complete wired and wireless measurement and control solutions that meet your unique application needs.
The NI 9795 plugs into any available slot in your CompactRIO chassis and manages the wireless network of distributed WSN measurement nodes. Through the RIO Scan
Interface, WSN I/O data is made available in your deployed LabVIEW Real-Time application, where you can integrate WSN I/O with the rest of your measurement and control
system. Conversely, you can also access WSN I/O data directly from a host machine connected to the CompactRIO system. Because the data is passed through the scan
interface, you can use the NI 9795 only in CompactRIO chassis that work with the scan interface. Additionally, only one NI 9795 is supported per CompactRIO chassis at this
time.
With graphical NI LabVIEW software, you can easily configure your network, collect measurement data, trigger alarms through SMS or email, and even view monitoring data
within a web browser. With the LabVIEW Real-Time Module, you can deploy embedded applications to run on CompactRIO to perform local processing, data hosting, and
communication with other devices through serial or Ethernet. With the LabVIEW Wireless Sensor Network (WSN) Module, you can customize the behavior of programmable NI
WSN measurement nodes. Use this module to optimize node behavior for your application, customize sample and transmission rates, perform onboard analysis or data reduction,
respond to digital value changes, perform local control of digital I/O lines, and even store data to flash memory.
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Application and Technology
System and Network Architectures
NI wireless sensor networks (WSNs) are ideally suited for long-term remote monitoring applications focusing on subjects such as the environment, water quality, structural health,
energy consumption, transportation, and machine conditioning. NI WSN measurement nodes can withstand outdoor and industrial environments and reliably monitor assets or
surroundings to provide enhanced visibility into the overall health of your systems or processes.
The NI WSN system is built on a low-power, reliable IEEE 802.15.4 network. The WSN gateway coordinates the wireless network, performing functions such as device
authentication, message buffering, and network topology administration.
The gateway, routers, and end nodes work together to form a mesh network. Measurement nodes can operate as routers or end nodes, providing the flexibility to extend the
range of your sensor network. When nodes are configured as routers, they can repeat messages from end nodes and extend network range while acquiring measurement data.

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