E18 V1.2 ZigBee Ad Hoc Module
Chengdu Ebyte Electronic Technology Co., Ltd.
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Page 13 of 15 pages
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4. User instruction
ZigBee
4.1 networking role and notice
ZigBee
No.
Description
1
Module uses Zigbee ad hoc networking, consisting of one coordinator and random other
devices(routers and end-devices)
2
It has self-organization, self-routing and network multi-hopping function (By default the
network depth is 5, there are 20 son nodes and 6 son router nodes in total).
3
The father node device (coordinator and router) can save data for the end-devices in sleep.
The save time can be set by the user (by default it is 30 seconds, ranging from 0 to 120
seconds).
4
Only the end device has the sleep function, sleeping within 120S, the user can set by
themselves, the default 0 (with sleep mode off).
Note: The recommended sleep time must be less than the data storage time of father node ,
otherwise it will affect the data reception.
5
In network communication Short Address communication is used.
Note: The short address is randomly distributed when the device joins the network, the long
address of MacAddress is the only fixed one, if the short address is unknown, the network
Short Address can be found via corresponding commands according to the MacAddress ,
and point to point communication is conducted.
6
Coordinator is unique in the network, the short address is 0000.
7
If unicast address is FFFF，FFFD，FFFC，then it corresponds to three broadcast mode.
8
When PANID is FFFF, it means automatic distribution. Networking can not be realized if
PANID is different.
9
When network keys are not the same the network can not be joined. The module network
key of the module remains open, the user can not get the correct air data via software
packet capture .
10
All devices in the network have opened broadcast function. Multiple devices broadcasting
at the same time or a single device broadcasting at a higher frequency will lead to a serious
network congestion. Please try to avoid this situation.
11
When multicasting module does not need to join the group,but be directly multicasted to
any group according to communication usage guidance. After the multicast, the local group
number will not change due to different multicast number.
12
PWM function and sleep mode can not be used at the same time in network, please turn off
the sleep mode before turn on PWM function .
13
After sleep mode, it can be waked up via the serial port(UART).
Note: In the sleep state, the first frame of data waked up via UART is invalid.
Notes：see more in <E18 v1.2 communication protocol>
