Murata Electronics North America CCT24 Manual Do Utilizador
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CCT24
2.12 Tree-Routing Systems
As discussed in Section 2.8.4, CCT24 tree-routing systems can cover much larger areas than other
CCT24 networks, with the trade-off that tree-routing increases message transmission latency. Tree-
routing systems are well suited to many industrial, commercial and agricultural applications. Compared to
other CCT24 network configurations, however, tree-routing systems require somewhat more initial plan-
ning and commissioning steps, as discussed in this Section.
CCT24 networks, with the trade-off that tree-routing increases message transmission latency. Tree-
routing systems are well suited to many industrial, commercial and agricultural applications. Compared to
other CCT24 network configurations, however, tree-routing systems require somewhat more initial plan-
ning and commissioning steps, as discussed in this Section.
2.12.1 Example Tree-Routing System
An example tree routing system is shown in Figure 2.12.1.1. In this example, seven sensor locations
need to be monitored over a several acre outdoor site. All of the sensor data must be sent back to a
central location, the base radio, for collection and analysis. Due to obstructions, remotes R1, R3, R6, and
R7 are prevented from communicating directly with the base radio. R1, R3, and R6 have direct communi-
cations with either R2 or R5, both of which have direct communications with the base radio. R7 has direct
communications with R6 and can use R6 to route messages to and from the base through R5.
need to be monitored over a several acre outdoor site. All of the sensor data must be sent back to a
central location, the base radio, for collection and analysis. Due to obstructions, remotes R1, R3, R6, and
R7 are prevented from communicating directly with the base radio. R1, R3, and R6 have direct communi-
cations with either R2 or R5, both of which have direct communications with the base radio. R7 has direct
communications with R6 and can use R6 to route messages to and from the base through R5.
Using the tree routing function of the CCT24, all nodes will be able to send and receive data to and from
the centrally located base. R2, R5, and R6 which are configured to relay data to and from other nodes in
addition to sending their own sensor data are called routing remotes, or routers. Note that there is no
hardware or firmware difference between CCT24 base, remote and router nodes - they are simply config-
ured for the particular mode of operation.
the centrally located base. R2, R5, and R6 which are configured to relay data to and from other nodes in
addition to sending their own sensor data are called routing remotes, or routers. Note that there is no
hardware or firmware difference between CCT24 base, remote and router nodes - they are simply config-
ured for the particular mode of operation.
As the system is powered up, R2, R4, and R5 will join by registering with the base radio. R2 and R5, once
they have registered with the base radio, will start sending out beacons so that R1, R3, and R6 can join
the tree-routing system through them. In the case of R6, it will wait until it has joined the system through
R5 before sending out the beacons that will let R7 join the system through it.
they have registered with the base radio, will start sending out beacons so that R1, R3, and R6 can join
the tree-routing system through them. In the case of R6, it will wait until it has joined the system through
R5 before sending out the beacons that will let R7 join the system through it.
Figure 2.12.1.1
CCT24 Tree Routing
System
System