I/O Line Monitoring; I/O Samples; Queried Sampling - Digi XBee Manual

XBee/XBee‐PRO DigiMesh 2.4 RF Modules
Associate LED
The Associate pin (pin 15) can provide indication of the device's sleep status and diagnostic information. To take
advantage of these indications, an LED can be connected to the Associate pin as shown in the figure above. The
Associate LED functionality is enabled by setting the D5 command to 1 (enabled by default). If enabled, the Associ-
ate pin is configured as an output and will behave as described in the following sections.
The Associate pin indicates the synchronization status of a sleep compatible node. On a non-sleep compatible node
the pin functions has a power indicator. The following table describes this functionality:
The LT command can be used to override the blink rate of the Associate pin. When set to 0, the device uses the
default blink time (500ms for sleep coordinator, 250ms otherwise).
LED Behavior
Sleep
compatible?
No
Yes
Yes
Yes
Diagnostics Support
The Associate pin works with the commissioning pushbutton to provide additional diagnostics behaviors to aid in
deploying and testing a network. If the commissioning push button is pressed once the device transmits a broadcast
node identification packet at the beginning of the next wake cycle if sleep compatible, or immediately if not sleep
compatible. If the Associate LED functionality is enabled (D5 command), a device that receives this transmission will
blink its Associate pin rapidly for 1 second.

I/O Line Monitoring

I/O Samples

The modules support both analog input and digital IO line modes on several configurable pins.

Queried Sampling

Parameters for the pin configuration commands typically include the following:
Pin Command Descriptions
Pin Command Parameter
Setting the configuration command that corresponds to a particular pin will configure the pin:
LED Status
On, blinking
On, solid
On, slow blinking
(500ms blink time)
On, fast blinking
(250ms blink time)
Description
0 Unmonitored digital input
Reserved for pin-specific
1
alternate functionalities.
Analog input (A/D pins) or
2
PWM output (PWM pins)
3 Digital input, monitored.
4 Digital output, default low.
5 Digital output, default high.
Alternate functionalities, where
6-9
applicable.
© 2010 Digi International, Inc.
Meaning
The device is powered and operating properly.
The device has not synchronized with the
network or has lost synchronization with the
network.
The device is acting as the network sleep
coordinator and is operating properly.
The device is properly synchronized with the
network.
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