R70SR SNAP SIGNAL™ Serial Data Radio
June 23, 2023
page
5
DIP Switch Settings for the R70SR in MultiHop Mode
Device Settings
DIP Switches
1
2
3
4
MultiHop Data Radio Mode
ON
Power/Radio Selection 900 MHz models are set to 1 W (30dBm) transmit power; 2.4 GHz
models are set to GFSK Radio modulation (transmit power remains at 65 mW)
OFF
Power/Radio Selection - 900 MHz models are set to 250 mW (24dBm) transmit power; 2.4
GHz models are set to FLRC Radio modulation (transmit power remains at 65 mW)
ON
Set this radio to be a MultiHop server radio
OFF
OFF
Set this radio to be a MultiHop client radio
OFF
ON
Set this radio to be a MultiHop repeater radio
ON
OFF
Reserved
ON
ON
Network Topologies in MultiHop Mode
Cable Replacement Configuration for Point-to-Point Networks--In this simple cable replacement application, the radio system knows all data
originating at one end must be transmitted to the other end. This allows the radio system to automatically correct for transmission problems
and it also provides the greatest throughput. This is the fastest configuration.
Simple cable replacement configuration for a point-to-point network
Client radio
Server radio
Device Settings
DIP Switches
1
2
3
4
Client configuration
On
Off
Off
On
Server configuration
On
Off
Off
Off
Cable Replacement Configuration for with Repeaters--In this simple cable replacement application with a repeater radio, the radio system
still knows all data originating at one end must be transmitted to the other end. In this application, no serial devices are connected to the
repeater(s). The system still corrects for transmission problems, but it takes time to repeat the message. The network delay is double that of
a system with no repeater.
Simple cable replacement configuration for a point-to-point network with a repeater
Client radio
Server radio
Repeater radio
Device Settings
DIP Switches
1
2
3
4
Client configuration
On
Off
Off
On
Repeater configuration
On
Off
On
Off
Server configuration
On
Off
Off
Off
MultiHop Mode (Star Network)
--In this more complex star topology, the client radio at the center of the network can communicate with many
server radios. A common example would be a PLC at the center communicating with many remote I/O systems. The star topology is slower
than a point-to-point network but faster than a tree network.
© Banner Engineering Corp.
