Applications
RFI-9256 Radio Modem User Manual
Page 56 of 109
6.12 Point-to-point Auxiliary I/O with a Back-to-back Repeater
Auxiliary I/Os can also be routed through back-to-back repeaters by connecting the outputs on one radio to
the inputs on the second radio. Such a configuration is shown in Figure 25.
Back-to-back Repeater
RFI-9256
Master 1
RFI-9256
Repeater
Slave 1
RFI-9256
Repeater
Master 2
RFI-9256
Slave 2
1
RADIO CONFIGURATION
Unit is a MASTER
Network Address: 52
Hopping Pattern: 22
Rx Address: 1000
PROTOCOL CONFIGURATION
Main Port: Point-to-point to 20
AUXILIARY I/O CONFIGURATION
Auxiliary I/O Follows Remote ENABLED
Direction: Bit0 = output; Bit1 = input
Power-up default: Bit0 = Low; Bit1 = N/A
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 52
Hopping Pattern: 22
Rx Address: 20
PROTOCOL CONFIGURATION
Main Port: Point-to-point to 1000
AUXILIARY I/O CONFIGURATION
Auxiliary I/O Follows Remote ENABLED
Direction: Bit0 = input; Bit1 = output
Power-up default: Bit0 = N/A, Bit1 = Low
RADIO CONFIGURATION
Unit is a MASTER
Network Address: 52
Hopping Pattern: 23
Rx Address: 20
PROTOCOL CONFIGURATION
Main Port: Point-to-point to 3000
AUXILIARY I/O CONFIGURATION
Auxiliary I/O Follows Remote ENABLED
Direction: Bit1 = input
RADIO CONFIGURATION
Unit is a SLAVE
Network Address: 52
Hopping Pattern: 23
Rx Address: 3000
PROTOCOL CONFIGURATION
Main Port: Point-to-point to 20
AUXILIARY I/O CONFIGURATION
Auxiliary I/O Follows Remote ENABLED
Direction: Bit1 = output
Power-up default: Bit1 = Low
0 1
0
1
Figure 25: Point-to-point auxiliary I/O with a back-to-back repeater
In this scenario, I/O 0 has been configured as an output on Master 1, and as an input on Slave 1, thus output
0 on Master 1 will mirror input 0 on Slave 1.
Auxiliary I/O 1 on Master 1 has been routed to I/O 1 on Slave 2 via the back-to-back repeater. This is
achieved by configuring I/O 1 as an output on Slave 1 and as an input on Master 2. Thus, the value of I/O 1
will be mirrored on Slave 1 from Master 1, which is passed on to Master 2, and Slave 2 will mirror the value
of I/O 1 on Master 2.
