User's Manual

Applications
Crescendo VHF Half-Duplex User Manual Page 48 of 74
7.2.2 Point-to-multipoint Network with Roaming Remote
In some applications the remote unit may be mobile, and needs to „roam‟ between areas of coverage. A
point-to-multipoint network configured for this purpose is shown in Figure 18.
Crescendo
Base
1000
Crescendo
Repeater
1002
Main
RTU
RADIO CONFIGURATION
Rx Address: 1002
Broadcast Retransmissions: 4
Store and Forward Repeater: True
Repeaters in Network: 1
PROTOCOL CONFIGURATION
Main Port: Point-to-multipoint
SERIAL CONFIGURATION
Main Port: 19200, 8N1, 2ms RX Timer
Crescendo
Repeater
1001
RADIO CONFIGURATION
Rx Address: 1001
Broadcast Retransmissions: 4
Store and Forward Repeater: True
Repeaters in Network: 1
PROTOCOL CONFIGURATION
Main Port: Point-to-multipoint
SERIAL CONFIGURATION
Main Port: 19200, 8N1, 2ms RX Timer
Crescendo
Remote
2000
RTU
RADIO CONFIGURATION
Rx Address: 2000
Broadcast Retransmissions: 4
Repeaters in Network: 1
PROTOCOL CONFIGURATION
Main Port: Point-to-multipoint
SERIAL CONFIGURATION
Main Port: 19200, 8N1, 2ms RX Timer
Main
RADIO CONFIGURATION
Rx Address: 1000
Broadcast Retransmissions: 4
Repeaters in Network: 1
PROTOCOL CONFIGURATION
Main Port: Point-to-multipoint
SERIAL CONFIGURATION
Main Port: 19200, 8N1, 2ms RX Timer
Figure 18: Point-to-multipoint network with roaming remote
As with other types of broadcast network, setting the max packet size will help fine tune the network. It is
also worth nothing that while there are two store-and-forward repeaters in the network, the repeaters in
network setting is set to one. Repeaters in network specifies the maximum number of repeaters a packet
must go through to reach a destination.