SENA ProBee-ZU10 User Manual

Page 25

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ProBee-ZU10 User Guide Rev.1.5

Optionally, set up the PAN ID and/or the extended PAN ID. Otherwise, the ZU10 will scan and join

the ZigBee network found automatically.

Configure the settings for sleep interval.

Please refer to the section 3.2 Setting up ZU10 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 ZU10 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 only. 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 ZU10 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 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.

ATS55=n, where n is rejoin timeout and the default is 10.

When the connection to the parent node is broken for S55 in seconds, the child node tries to rejoin the

current network.

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