National Instruments WSN-9791 User manual

GETTING STARTED GUIDE
NI WSN-9791 Ethernet Gateway
This guide describes how to install, configure, and verify the
National Instruments Wireless Sensor Network (WSN) 9791
gateway, NI WSN nodes, and NI software.
Figure 1. NI WSN-9791 Ethernet Gateway

NI WSN-9791 Getting Started Guide 2 ni.com
Figure 2. NI WSN System Components
The NI WSN system contains four main components as shown in
Figure 2: a PC running Windows and NI software, a NI WSN
gateway, NI WSN-32xx node(s), and an Ethernet network.
1NIWSN-32xx Nodes
2 NI WSN-9791 Gateway
3 PC Running NI Software
4 Ethernet Connection (not pictured)
2
1
1
3

© National Instruments Corp. 3 NI WSN-9791 Getting Started Guide
What You Need To Get Started
For information about which software version supports your
device, go to ni.com/info and enter wsnsoftware.
• Host PC running Windows and NI software
• NI LabVIEW WSN Module (Optional. Includes NI-WSN
driver software)
• NI-WSN software installation disc, which contains
NI Measurement & Automation Explorer (MAX)
• NI WSN-9791 gateway and appropriate power supply
•NIWSN-32xx node(s) with an approved power supply or four
approved 1.5 V AA batteries for each node
• RJ45 Ethernet cable/Ethernet network
• Related hardware and software documentation
Related Documentation
For a complete list of documentation related to NI WSN, refer to
ni.com/info and enter rdwsnrd. In addition to this guide, the
following documents may be useful when configuring your
NI WSN system.

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•NI WSN-9791 User Guide and Specifications
•NI WSN-32xx User Guide and Specifications
• MAX Help for WSN Devices , available in MAX from Start»
AllPrograms»National Instruments»NI-WSN»Configuring
WSN in MAX
• Refer to the NI-WSN book on the Contents tab of the LabVIEW
Help, which is available by selecting Help»LabVIEW Help in
LabVIEW
•NI-WSN Readme, available on the installation disc included
with your device
Caution Before installing your device, read all product
documentation to ensure compliance with safety, EMC,
and environmental regulations.
Step 1. Unpack and Set Up the Device
Remove the device from the packaging and inspect it. Contact NI
if the device appears damaged. Do not install a damaged devices
Caution The device is static sensitive. Always properly
ground yourself and the equipment when handling or
connecting to the device.

© National Instruments Corp. 5 NI WSN-9791 Getting Started Guide
Powering on and Mounting the NI WSN Device
Refer to the NI WSN device documentation for more information
about powering on and mounting your device. Before setting up
NI WSN nodes, remove and save the serial number sticker located
on the back of NI WSN device for future use when configuring
your device in software.
Step 2. Install NI-WSN Software on the Host PC
For information about which software version supports your
device, go to ni.com/info and enter wsnsoftware. You must be
an Administrator or have administrator privileges to install NI
software and devices on your computer. To install the NI-WSN
software, complete the following steps:
1. Close all other applications.
2. Install NI LabVIEW.
3. Install the NI LabVIEW WSN Module (optional).
4. Install the NI-WSN driver software.

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Step 3. NI WSN-9791 Firmware
Ensure that the firmware version of your NI WSN-9791 matches
the version of NI-WSN software installed in step 2. For more
information, refer to ni.com/info and enter wsnsoftware.
To verify the software, complete the following steps:
1. Launch MAX.
2. Expand Remote Devices and select your WSN 9791 gateway.
Note If MAX is not detecting your device, refer to
step 2 of Step 4. Configuring the NI WSN System.
3. Select the Gateway firmware tab and verify the firmware
version.
4. If needed, update the firmware by selecting Browse and
selecting the file ni9791fwROM.cfg. If using LabVIEW 2009
or earlier, select ni9791fwROM-LV861_LV2009.cfg.

© National Instruments Corp. 7 NI WSN-9791 Getting Started Guide
Step 4. Configuring the NI WSN System
You must configure the NI WSN devices in MAX before using
NI LabVIEW to take measurements. To confirm device
recognition and configure the NI WSN system, complete the
following steps:
1. Launch MAX.
2. Expand Remote Systems to confirm that MAX detects the
NI WSN-9791 gateway. If plugged into an Ethernet port on the
local subnet or directly into the PC host, the device appears in
Remote Systems. If the device is plugged into a port that is not
on your subnet, try manually adding it by right-clicking
Remote Systems and selecting Create New. Select Remote
Device (not on the local subnet). Click Next.
• If your DHCP server is set up to automatically register
hostnames, the hostname is registered as
NI-WSN9791<serial number>. Enter the hostname and
click Finish.
• If you know the device IP address, such as 192.168.0.2,
enter it and click Finish.

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Note If you are still unable to detect your device, wait until
the POWER LED on the device is green and the STATUS
LED turns off. Wait one minute to allow the device to
connect to the network and then press <F5> to refresh
MAX. If the device does not appear, contact your system
administrator to confirm that the network is functioning
properly and that a firewall is not interfering with device
discovery. For more information about the ports used for
device discovery and communication, refer to the
NI WSN-9791 User Guide and Specifications.
3. Select the NI WSN gateway and open the Network Settings tab.
a. Confirm or change the default settings.
b. For the Configure IPv4 Address field, select DHCP or
Link Local or Static.
c. Click Apply to save changes.

© National Instruments Corp. 9 NI WSN-9791 Getting Started Guide
Adding a Node to the NI WSN Gateway
1. Select the NI WSN-9791 and then click the WSN Nodes tab.
2. Click Add Node.
3. In the Add Node dialog box:
a. Select the Type.
b. Enter the NI WSN-32xx device serial number, which is
listed on the sticker on the underside of the device, and an
ID Number (number between 1 and 50).
4. Click Done if you are done adding nodes. If you want to add
other nodes, click Add Another.
Note Upon completion, these changes are automatically
applied.

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5. After nodes are added in MAX, nodes connect automatically
when they are in range of a gateway.
Note If your node does not connect automatically, refer
to ni.com/info and enter exxhqv for troubleshooting
information.

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For more information about configuring the WSN system, refer to
Start»All Programs»National Instruments»NI-WSN»
Configuring WSN in MAX.
Step 5. Attach Sensors and Signal Lines
Attach sensors and signal lines to the terminal block or accessory
terminals for each node. For device pinouts, refer to the device
documentation.
Step 6. Start Using the NI WSN System
To use the NI WSN system, open a new LabVIEW project. If the
gateway is on the local subnet, complete the following steps:
1. Right-click the project name and select New»Targets and
Devices. In the Add Targets and Devices on My Project dialog
box, select Existing target or device and expand the
WSN Gateway folder. When you expand the WSN Gateway
folder, the network is scanned for any connected NI WSN
gateway devices. Wait for device detection.
2. Once detected, click the NI WSN gateway device you wish to
use and click OK. Clicking OK adds the NI WSN-9791 to the
Project Explorer window.

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3. Expand the listing for the NI WSN gateway in the NI LabVIEW
project to see the NI WSN-32xx nodes connected to it. Expand
each node to list the I/O variables.
If the gateway is not on the local subnet, complete the
following steps:
a. Right-click the project name and select New»Targets and
Devices,click Existing target or device, and click
Specify a target or device by IP address.
b. Select IP Address and enter the IP address.
c. Expand the WSN Gateway folder and select the Gateway
type and click OK.
d. To add the nodes, right-click the gateway in the project and
select New»Targets and Devices. Expand the WSN Node
folder, select the node, and click OK.

© National Instruments Corp. 13 NI WSN-9791 Getting Started Guide
4. To configure the I/O variables properties (such as Range and
Sample Interval), right-click on the node and select
Properties.
5. To acquire data, create a new VI, and drag the I/O variable to the
block diagram, create an indicator, and click Run. For more
information about configuring the WSN system in NI LabVIEW,
select Help»Search the LabVIEW Help and enter WSN.

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Programming Examples
NI LabVIEW includes example programs to help you develop an
application. To locate LabVIEW examples, go to ni.com/info
and enter wsnexamples. For additional examples, refer to
zone.ni.com.
Where to Go for Support
The National Instruments Web site is your complete resource for
technical support. At ni.com/support you have access to
everything from troubleshooting and application development
self-help resources to email and phone assistance from
NI Application Engineers.
National Instruments corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504.
National Instruments also has offices located around the world to
help address your support needs. For telephone support in the
United States, create your service request at ni.com/support
and follow the calling instructions or dial 512 795 8248. For
telephone support outside the United States, visit the Worldwide
Offices section of ni.com/niglobal to access the branch office
Web sites, which provide up-to-date contact information, support
phone numbers, email addresses, and current events.

© 2011 National Instruments Corp. All rights reserved.
373730A-01 Aug11
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