Operation
RFI-9256 Radio Modem User Manual
Page 39 of 109
When the decoder finds RTU address 21 it subtracts it from the base RTU address, leaving a result
of 1. This is then added to the base radio address of 1000 giving a radio address of 1001 which has
RTU 21 attached.
NOTE:
When using the mapped route configuration, the RTUs have to be connected to the same
port which is used by the base radio address.
Range route:
This route mode routes any RTU address between a start and end RTU address to a
single radio address.
5.3.5 Mixed Protocol Networks
The RFI-9256 offers dual independent serial ports that can be used for different network configurations. This
allows for any combination of the following network configurations to co-exist in a single radio network.
Point-to-point configurations.
Point-to-multipoint broadcast configurations.
Hayes dial-up configurations.
SCADA protocol configurations.
The most common use for this co-existence is to allow remote monitoring of radios without disrupting the
main data path through the network. This is achieved by configuring the main data path on the main port,
and leaving the auxiliary port on the master unit for Hayes dial-up. Hayes commands can then be used to
connect to the terminal menu of each individual radio in the network.
5.3.6 Network Link and Online Determination
There are two important indications given by the RFI-9256 as to the current network status, network link and
online. These two parameters have different functionality when running in point-to-point, point-to-
multipoint broadcast, Hayes dial-up, and SCADA routing modes as shown in Table 11.
