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12
Information about planning and application
12.1
Mesh network
1
Fig. 23:
Mesh network principle
[1] Radio switch
[2] Interrupted signal path
[3] New signal path
[4] Actuator/lamp
In a mesh network the integrated devices or participants communicate with each other wireless,
e.g via Bluetooth or WLAN. This happens either directly, if they are within range of each other,
or indirectly via one or several communication nodes.
Mesh networks do not have a central cable through which the entire data traffic flows. The data
are sent from a device to a device in close proximity until the send signal has reached the target
device.
Benefits
■
Fail-safe:
–
If a connection fails, the information is exchanged between all participants via all
connections that are still available.
■
Transmission range:
–
Every participant operates in the network as repeater (tranferer). With Bluetooth
connections and a free path the transmission range from device to device is
approximately 15 meters. Walls and ceilings reduce the radio transmission coverage.
With the mesh network topology larger paths and obstacles can be overcome.
–
The control device, e.g. a smartphone, must only be within the transmission range of
one participant in the network to be able to control the entire system.
Disadvantages:
■
Number of participants
–
In classic networks the number of participants is limited to 127.
–
In evolution networks the number of participants is limited to 250.
Product manual 2CKA001373B5323
Information about planning and application
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