AeroComm CL4490-1000 用户手册
CL4490 User’s Manual
3. Network Topologies
Topology refers to the shape of a network, or the network's layout. How different nodes in a
network are connected to each other and how they communicate, is determined by the network's
topology. The CL4490s support a Point-to-Point and a Point-to-Multipoint network topology.
network are connected to each other and how they communicate, is determined by the network's
topology. The CL4490s support a Point-to-Point and a Point-to-Multipoint network topology.
3.1 Point-to-Point
A point-to-point system is a simple arrangement consisting of just two CL4490s - a Server and a
Client. Sometimes referred to as a wireless bridge, a point-to-point link replaces a single
communications cable. A point-to-point link might be used to connect a PLC to a remote
monitoring station.
Client. Sometimes referred to as a wireless bridge, a point-to-point link replaces a single
communications cable. A point-to-point link might be used to connect a PLC to a remote
monitoring station.
Figure 8- Point-to-Point Network
OEM HOST
(Remote Monitoring
Station)
(Remote Monitoring
Station)
OEM HOST
(PLC)
(PLC)
Client
Server
3.2 Point-to-Multipoint
Point-to-Multipoint systems have one base station, or access point, that controls communications
with all of the other wireless nodes in the network. This allows for the creation of a wireless
network consisting of multiple nodes. By programming each CL4490 with a network specific
Channel Number and System ID multiple networks can be created see (Fig 9).
with all of the other wireless nodes in the network. This allows for the creation of a wireless
network consisting of multiple nodes. By programming each CL4490 with a network specific
Channel Number and System ID multiple networks can be created see (Fig 9).
Figure 9- Multiple Networks of Point-to-Multipoint CL4490s
Example: Channel Number = 13
System ID = 123
Example: Channel Number = 25
System ID = 256
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