AeroComm CL4424 user manual Network Topologies, Point-to-Point, Point-to-Multipoint

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CL4424 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 CL4424s support a Point-to-Point and a Point-to-Multipoint network topology.

3.1Point-to-Point

A point-to-point system is a simple arrangement consisting of just two CL4424s - 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.

Figure 8- Point-to-Point Network

OEM HOST

(Remote Monitoring

Station)

Server

Client

OEM HOST (PLC)

3.2Point-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 CL4424 with a network specific Channel Number and System ID multiple networks can be created as shown below.

Figure 9- Multiple Networks of Point-to-Multipoint CL4424s

Example: Channel Number = 23

Example: Channel Number = 25

System ID = 123

System ID = 256

6/21/2005

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Contents CL4424 Limited Warranty Document InformationThis material is preliminary FCC Information FCC Notice RF Exposure/Installation InstructionsTable of Contents Overview FeaturesCL4424 RF Transceiver CL4424 User’s ManualSpecifications CL4424 CL4424 User’s Manual CL4424 SpecificationCL4424 User’s Manual CL4424 Interface CL4424 Status LEDsDescription RS-485 2-wire Half Duplex Terminal Block Pin Assignments RS-232 Pin AssignmentsPin Description CL4424 Mechanical Diagram CL4424 Mechanical DiagramDTE Pin DTE Signal Interfacing ProtocolNull Modem Pin CL4424 User’s Manual RS-232CL4424 User’s Manual DCE to DCE Interface RS-485 2-wire Half DuplexCL4424 User’s Manual Hardware Flow Control Network Topologies Point-to-PointPoint-to-Multipoint CL4424 Configuration Utility Software InstallationCL4424 Settings US and International RF Channel Number Settings ConnexLink SettingsRate setting of its host device Optional Settings PC SettingsAdditional Features CL4424 User’s Manual Programming The CL4424 units Problem Solution Troubleshooting