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Chapter 4: Network Topologies
There are no specific factory default settings to configure modems for E2E operation.
To establish a basic E2E network:
Master
• Enter into Command Mode.
• Load the &F1 factory default settings.
• Change the Network Type (S133) to 2.
• Change Packet Retransmissions (S113) from 5 to 0 (increase from 0 if required).
• Save the change using the AT&W command.
• Go online with the ATA command.
Slaves
• Enter into Command Mode.
• Load the &F2 factory default settings.
• Change the Network Type (S133) to 2.
• Change the Unit Address (S105) to a unique number (range: 2–65534).
• Change the Destination Address to 65535 (the broadcast address).
• Save the change using the AT&W command.
• Go online with the ATA command.
NOTES:
An E2E network requires a Master modem.
The data being transmitted from remote units in an E2E network travels to the Master and is then re-broadcast to all other
remotes.
The following factors must be considered when preparing to configure the modems:
• The application.
• Network topology.
• Physical distribution of the network.
Components involved in the configuration process of the MDR100A-R5 or MDR112A-R5:
• Interfacing with the module, and
• Inputting the desired values into a variety of registers.
Interfacing to the MDR100A-R5 or MDR112A-R5 to configure it may be done in a number of ways:
If mounted in a MDR100A-R5 or MDR112A-R5 Interface Card combination:
• Rear RS-232 connector, 9-pin straight-through cable, and PC running communications program, or
• Front SERIAL DIAG RJ45 port, MHS configuration cable, and PC running the System Diagnostics software (RadioNetwork).
If mounted in a MDR100A-R5 or MDR112A-R5:
• Rear RS-232 connector, 9-pin straight-through cable, and PC running communications program, or
• Front RS-232 connector, 9-pin straight-through cable, and PC running the System Diagnostics software (RadioNetwork).
