Chengdu Ebyte Electronic Technology Co.,Ltd. E90-DTU(xxxSLxx-ETH)_V2.0 User Manual
Copyright ©2012–2023，Chengdu Ebyte Electronic Technology Co.,Ltd.
24
4.2.5 Communication key
The web configuration always shows 0 (configuration range 0 to 65535), the communication key is used for
user encryption to avoid interception of over-the-air wireless data by similar modules. the DTU will internally use
these two bytes as a calculation factor to transform the encryption process for the over-the-air wireless signal.
Web page configuration needs to configure the key every time, otherwise the device will encrypt the
communication data with 0.
AT command and the upper computer can query the communication key of the current device, web
configuration cannot query the communication key fixed return 0.
4.2.6 LBT
DTU has Listen before talk (LBT) function, when this function is turned on, the wireless data will actively
listen to the channel environment noise before transmitting, the noise exceeds the threshold value will delay the
transmission, this function can greatly improve the communication success rate of DTU in harsh environment, can
be used for network transmission, anti-collision processing, but may bring data delay, LBT maximum dwell time 2
seconds.
4.2.7 WOR role
WOR off. the DTU works in transmission mode, the user input data through Ethernet, the DTU will start
wireless transmitting out. Wireless receive function is on, and wireless data is received and output through Ethernet.
WOR transmitting side. DTU transmitting and receiving is on, and a certain time wake-up code is added when
transmitting data.
WOR receiver. the DTU can not transmit data, working in WOR listening mode, the longer the WOR listening
interval cycle time, the lower the average power consumption, but the greater the data delay, the receiving and
transmitting sides must be consistent (very important).
To Next Page
Loading...
Need help?
General
