User Manual

Applications
RFI-9256 Radio Modem User Manual Page 46 of 96
5.10 SCADA Network with a Back-to-back Repeater
SCADA networks can use back-to-back repeaters in order to extend the network coverage. This scenario is
shown in Figure 19.
RFI-9256
Master
RFI-9256
Repeater
Slave
Main
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 12
Hopping Pattern: 8
Local Address: 30
PROTOCOL CONFIGURATION
Main Port: Modbus
Default Route: 1000:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
RADIO CONFIGURATION
Unit is a MASTER
Network Address: 12
Hopping Pattern: 8
Local Address: 1000
PROTOCOL CONFIGURATION
Main Port: Modbus
Single Route: 21 -> 2000:00
Range Route: 40-41 -> 30:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
RFI-9256
Repeater
Master
RFI-9256
Slave 3
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 12
Hopping Pattern: 9
Local Address: 4008
PROTOCOL CONFIGURATION
Main Port: Modbus
Default Route: 30:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
Main Null Modem Cable
Back-to-back Repeater
RADIO CONFIGURATION
Unit is a MASTER
Network Address: 12
Hopping Pattern: 9
Local Address: 30
PROTOCOL CONFIGURATION
Main Port: Modbus
Mapped Route: 40-41 -> 4007:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
RFI-9256
Slave 1
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 12
Hopping Pattern: 8
Local Address: 2000
PROTOCOL CONFIGURATION
Main Port: Modbus
Default Route: 1000:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
Main
RFI-9256
Slave 2
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 12
Hopping Pattern: 9
Local Address: 4007
PROTOCOL CONFIGURATION
Main Port: Modbus
Default Route: 30:00
SERIAL CONFIGURATION
Main Port: 9600, 8O1, No Flow
Main
Main
RTU
MASTER
RTU 21
RTU 40
RTU 41
Figure 19: SCADA network with a back-to-back repeater