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National Instruments Corporation
16
NI WSN-3230/3231 User Guide and Specifications
WSN Connect Button
Note
Refer to your NI WSN gateway documentation for detailed instructions about how to connect
a NI WSN-3230/3231 to the NI WSN gateway.
The NI WSN-3230/3231 is equipped with a WSN connect button, as shown in Figure 12. The button
controls network connection and the LEDs, which display connection status.
Pressing the WSN connect button results in the device responses shown in Table 2.
Reset Button
The NI WSN-3230/3231 is equipped with a reset button as shown in Figure 12.
Pressing the reset button results in the following device responses:
•
When pressed for fewer than 5 seconds, the device reboots with the current configuration.
•
When pressed for 5 seconds or more, the device reboots into Factory Default Mode, which returns
the device user configuration to the factory-set defaults
Using the NI WSN-3230/3231 Device
The NI WSN-3230/3231 is a programmable interface to serial sensors, laboratory instruments,
industrial devices and embedded circuits. These nodes can interrogate and control serial devices and
share data over an NI wireless sensor network. By programming your node with the NI LabVIEW WSN
Module, you can create a high-performance and power-managed device interface that optimizes traffic
on your wireless connection and the battery life of your node. You can send and receive serial traffic,
parse and process strings, and selectively send data wirelessly back to your host system.
The sample interval of the node and how the node interacts with serial sensors is determined by the
NI LabVIEW WSN Module application running on the node. The node sample interval, which
determines how often the node wakes up to execute the sample case is configurable by WSN
configuration nodes or in MAX. Typically, the sample case will contain your serial transmission or
reception and any string processing or data reduction. Because of the sampling behavior of NI-WSN,
the NI WSN-3230/3231 are not intended for applications requiring a streaming, wireless serial
connection. Refer to the
LabVIEW Wireless
Sensor Network Module Help
for more information.
RS-232 and RS-485 Compatibility
The NI WSN-3230 has one RS-232 DTE port. The port is fully compatible with the ANSI/EIA/TIA-232
standard. The NI WSN-3231 has one RS-485 DTE port. The port is fully compatible with the
ANSI/EIA/TIA-485 standard.
For more information about RS-232 and RS-485, refer to the
NI Serial
Hardware Specifications and Features Guide
at
ni.com/manuals
.
Table 2.
WSN Connect State/Device Status
Current Device State
Duration of Button Press
Result
Initial power on,
not connected
Any duration
Node turns on and searches for an available network.
Connected to a
NI WSN gateway
<5 seconds
Node blinks all four signal strength LEDs twice, and
then displays the signal strength as shown in Table 1.
≥
5 seconds
Node leaves current network and searches for a new
network.
