According to the provisions of 802.11 protocol, different wireless networks can have a
same network name (ie SSID / ESSID), but must correspond to a unique BSSID address.
Illegal intruders can create a wireless network with the same SSID / ESSID, it will make
STAs in the network to join to the illegal AP,thereby and then network leakage happens.
Users can prevent STA from joining to illegal network by binding the BSSID address,to
improve wireless network security.
2.3.1.5
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Wireless Roam
This module supports 802.11 wireless roam. Wireless Roam is that, in order to expand
the coverage of a wireless network, multi-AP co-found the wireless network with a same
SSID/ESSID, each AP is used to cover different area, STA joined in the network can
choose a proximate AP(namely signal is the strongest) to access according to different
location, and mobile STA will switch among the different APs .
When wireless roam is enabled, the module will automatically initiate a scan in every
100 seconds, and according to the current scan result,module selects a recent AP to
access. During the wireless roaming, the network may be a brief interruption, therefore, it is
recommended to close as no need of roam.
What should be noted is that, when BSSID address is binded, wireless roaming is not
effective anymore.
2.3.1.6
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Region Setting
The module supports wireless region setting. Users can set the wireless channel list to
determine the channels of scanning range.
2.3.2
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Plug and Play Serial
The module supports serial transparent transmission and auto-work mode, it really
achieve the serial plug and play,and it does the greatest degree to reduce the use
complexity. In this mode, users only need to pre-set the required network parameters as
follow:
The paraments of wireless network,include:
network name(SSID);
security mode;
Key(if it’s need);
default TCP/UDP paraments, include:
protocol type
connetion type
server address
port number
Since then, after its power is on, module can automatically connect to the default
Содержание HLK-WIIF-M04
Страница 15: ...4 Then click search modules as shown below...
Страница 56: ...figure5 16 query the receiver buffer figure5 17 socket receiving...
Страница 62: ...figure5 23 instruction test...
