XT09-SI-MESH Digi International, XT09-SI-MESH Datasheet - Page 53

• Manufacturer Part Number: XT09-SI-MESH
• Description: MODULE RF 900MHZ 1W 115K W/RPSMA
• Manufacturer: Digi International

Specifications of XT09-SI-MESH

• Frequency: 900MHz
• Modulation Or Protocol: FHSS, FSK
• Power - Output: 1W
• Sensitivity: -100dBm
• Voltage - Supply: 2.8 V ~ 5.5 V
• Current - Receiving: 80mA
• Antenna Connector: RP-SMA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Data Interface: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 602-1183

5. DigiMesh
Introduction
DigiMesh Feature Set
Data Transmission and Routing
Unicast Addressing
XTend RF Modules containing firmware version 8020 (or above) now feature DigiMesh™ mesh net-
working support. Mesh networking allows messages to be routed through several different nodes
to a final destination. The DigiMesh firmware allows system integrators to bolster their networks
with the self-healing attributes of mesh networking. In the event that one RF connection between
nodes is lost (due to power-loss, environmental obstructions, etc.) critical data can still reach its
destination due to the mesh networking capabilities embedded inside the modules.
A Sample DigiMesh Network Topology
XTend RF Modules containing firmware version 8020 (or above) support the following features:
Note that Sleep (low power) modes and encryption are not supported in this release.
When transmitting while using Unicast communications, reliable delivery of data is accomplished
using retries and acknowledgements. The number of retries is determined by the NR (Network
Retries) parameter. RF data packets are sent up to NR + 1 times and ACKs (acknowledgements)
are transmitted by the receiving node upon receipt. If a network ACK is not received within the
time it would take for a packet to traverse the network twice, a retransmission occurs.
To send Unicast messages, set the DH and DL on the transmitting module to match the corre-
sponding SH and SL parameter values on the receiving module.
© 2010 Digi International Inc.
• Self-healing - Any node may enter or leave the network at any time without causing the net-
• Peer-to-peer architecture - No hierarchy and no parent-child relationships are needed.
• Quiet Protocol - Routing overhead will be reduced by using a reactive protocol similar to
• Selective acknowledgements - Only the destination node will reply to route requests
• Unicast and Broadcast addressing supported
• Reliable delivery - Reliable delivery of data is accomplished by means of acknowledgements.
work as a whole to fail.
AODV. Rather than maintaining a network map, routes will be discovered and created only
when needed.
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