NI C Series User manual

USER GUIDE AND SPECIFICATIONS
NI 9795 WSN C Series Gateway
This user guide describes how to use the NI 9795 Wireless Sensor
Network gateway and lists specifications. The NI 9795 combines
with NI WSN-32xx nodes to form a wireless sensor network.
Figure 1. NI 9795 WSN Gateway

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Figure 2. NI WSN System Components
Figure 2 shows the components of the NI WSN system. A NI WSN
system consists of one NI WSN gateway, up to 36 NI WSN-32xx
nodes per gateway, and multiple PCs or Programmable
Automation Controllers (PACs) to receive and analyze the
distributed sensor data. When you connect the NI WSN gateway,
1NIWSN-32xx Nodes
2 NI CompactRIO Chassis
3 NI 9795 WSN Gateway
4 PC or NI Real-Time Hardware
Running Application Software
5 Ethernet Network (not pictured)
1
1
2
4
3

© National Instruments Corp. 3 NI 9795 User Guide and Specifications
you can use a separate host PC running Windows, or a PAC running
NI LabVIEW Real-Time, to display measurement results, status
information, and to change the NI WSN gateway and
NI WSN-32xx node settings.
Safety Guidelines
Operate the NI 9795 only as described in these operating
instructions.
Hot Surface This icon denotes that the component may be
hot. Touching this component may result in bodily injury.
Caution Do not operate the NI WSN product in a manner
not specified in the user manual or operating instructions.
Product misuse can result in a hazard. You can
compromise the safety protection built into the product if
the product is damaged in any way. If the product is
damaged, return it to National Instruments for repair.
Caution If you need to clean a NI WSN product, wipe it
with a dry towel. The product must be completely dry and
free from contaminants before you return it to service.

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Safety Guidelines for Hazardous Locations
The NI 9795 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 and
Ex nA IIC T4 hazardous locations; and nonhazardous locations
only. Follow these guidelines if you are installing the NI 9795 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.
Safety Guidelines for Hazardous Locations
The NI 9795 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4 and
Ex nL IIC T4 hazardous locations; and nonhazardous locations
only. Follow these guidelines if you are installing the NI 9795 in a
potentially explosive environment. Not following these guidelines
may result in serious injury or death.
Caution Do not install or remove the gateway unless
power has been switched off or the area is known to be
nonhazardous.
Caution Substitution of components may impair
suitability for Class I, Division 2.

© National Instruments Corp. 5 NI 9795 User Guide and Specifications
Caution For Zone 2 applications, install the WSN system
in an enclosure rated to at least IP 54 as defined by
IEC 60529 and EN 60529.
Special Conditions for Hazardous Locations Use in Europe
The NI 9795 has been evaluated as Ex nA nL IIC T4 equipment
under DEMKO Certificate No. 07 ATEX 0626664X. Each gateway
is marked II 3G and is suitable for use in Zone 2 hazardous
locations, in ambient temperatures of –40 °C ≤Ta ≤70 °C.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
as stated in the product specifications. These requirements and
limits are designed to provide reasonable protection against
harmful interference when the product is operated in its intended
operational electromagnetic environment.
This product is intended for use in industrial locations. There is no
guarantee that harmful interference will not occur in a particular
installation, when the product radio is operating in an environment,
or if the product is used in residential areas. To minimize the
potential for the product to cause interference to radio and

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television reception or to experience unacceptable performance
degradation, install and use this product in strict accordance with
the instructions in the product documentation.
Furthermore, any changes or modifications to the product not
expressly approved by National Instruments could void your
authority to operate it under your local regulatory rules.
The following statements contain important EMC information
needed before installing and using this product:
Caution This product is intended for use in industrial
locations. As a result, this product may cause interference
if used in residential areas. Such use must be avoided
unless the user takes special measures to reduce
electromagnetic emissions to prevent interference to the
reception of radio and television broadcasts.
Caution To ensure the specified EMC performance,
operate this product only with approved accessories.

© National Instruments Corp. 7 NI 9795 User Guide and Specifications
Software Overview
Note Refer to the NI WSN Readme, available on the
software installation disc included with your device or
from ni.com/drivers, for NI software application
version support. For information about which software
version supports your device, go to ni.com/info and
enter wsnsoftware.
The NI-WSN driver software includes NI Measurement and
Automation Explorer (MAX) as well as server and driver software
for easy integration into application software packages. These
software components manage the low-level communications and
hardware details, simplifying programmatic access to
I/O channels. The NI-WSN driver software is on the software
installation disc included with your NI 9795 gateway device. The
NI-WSN driver software is supported by Windows 7/Vista/XP and
contains the following components:
•NIMAX
• NI-WSN driver software

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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 2011 or later, and LabVIEW Real-Time 2011 or
later
• NI LabVIEW WSN Module (optional)
• NI-RIO 4.0 or later, included on software installation disc
included with your CompactRIO chassis
• NI-WSN 1.3 or later and NI Measurement & Automation
Explorer (MAX), on the software installation disc that shipped
with your gateway
• NI CompactRIO chassis with Scan Mode support. For more
information, visit ni.com/info and enter
rdsoftwareversion
Note Use only one NI 9795 WSN C Series Gateway per
NI CompactRIO chassis.
• NI 9795 WSN gateway

© National Instruments Corp. 9 NI 9795 User Guide and Specifications
•NIWSN-32xx node devices with an approved power supply or
four approved 1.5 V AA batteries for each node
• RJ45 Ethernet cable/Ethernet network
• NI CompactRIO approved power supply
• Related hardware and software documentation
Unpack the Device and Install the Antenna
Remove the device from the package and inspect the device.
Contact NI if the device appears damaged. Do not install a
damaged device.
Caution The device is static sensitive. Always properly
ground yourself and the equipment when handling or
connecting to the device.
To attach the antenna, align the antenna with the mount and screw
it on as shown in Figure 3.
Caution The antenna must be attached to the NI WSN
device in order for the NI WSN device to function
correctly.

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Figure 3. Attach Antenna to Device
Refer to the NI 9795 WSN Gateway Getting Started Guide for more
information about how to get started using your device.