SENA ProBee-ZE10 User Manual
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ProBee-ZE10 User Guide Rev.1.5
3.4
Setting up ZE10 as a Sleepy End-Device
A sleepy end-device can turn off radio to save power. To configure the ZE10 as a ZigBee sleepy end-
device, please follow the steps below.
Configure the ZE10 node as a sleepy end-device.
Optionally, select the channel mask. Otherwise, the ZE10 will use the default channel mask.
Optionally, set up the PAN ID and/or the extended PAN ID. Otherwise, the ZE10 will scan and join
the ZigBee network found automatically.
Configure the settings for sleep interval.
Please refer to the section 3.2 Setting up ZE10 as a Router for the AT commands regarding the node
type selection, the channel mask configuration and the PAN ID/Extended PAN ID configuration.
One of the unique features of the ZigBee device is its extreme low power consumption which is mainly
achieved by its efficient sleep and wake-up mechanism. While ZigBee coordinator and routers are
required to be in operation all the time, ZigBee sleepy end-devices can be configured to be in the sleep
mode most of the time and only wake up at pre-configured time interval for data transmission before it
goes into the sleep mode again. The ZE10 sleep interval can be configured by setting the S-registers
using the AT commands as below.
ATS51=n, where n is poll timeout in seconds and the default is 60.
This value is for a parent node. If a sleepy end-device does not send a poll request to its parent
coordinator or router within the poll timeout, the sleepy end-device is removed from the child table.
Unlike the non-sleepy end-device, sleepy end-device does not use S56 as the poll period. Instead, it uses
S53 as the sleep duration which works similar to the poll period, except it goes to sleep mode.
ATS53=n, where n is sleep duration in quarter seconds and the default is 8.
The ZE10 sleeps for sleep duration and turns off radio.
ATS52=n, where n is poll period in milliseconds and the default is 100.
Sleepy end-device wakes up from the sleep mode if S53 timer expires or GPIO0 interrupt is generated or
serial data is received. Once the sleepy end-device wakes up, it polls the parent node at poll period
defined by S52 until it goes to sleep mode again. Since the sleepy end-device exchanges data with the
parent node only by polling, S52 poll period is usually configured as around 100 ms.
ATS54=n, where n is standby timeout in seconds and the default is 5.
If there is no RF data or serial data for S54 seconds, the sleepy end-device goes to sleep mode again. If
any serial or RF data is sent or received, the timer will reset and the sleepy end-device waits for another
S54 seconds before it goes to sleep mode again.