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9XTend‐PKG‐E™EthernetRFModem–ProductManualv2.x4x[2007.01.04]

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5.RFCommunicationModes

The network configurations covered in this chapter are described in terms of the following:

• Network Topology (Point-to-Point, Point-to-Multipoint or Peer-to-Peer)

• RF Communication Type (Basic or Acknowledged)

• RF Mode (Streaming, Multi-Transmit, Repeater, Acknowledged or Polling)

The following table provides a summary of the network configurations supported by the XTend RF

Modem.

*Assumedefaultvaluesforparametersnotlisted.Profilesdonotreflectaddressingimplementations.

**AM(Auto‐setMY)Commandmustbeissuedthroughaterminalprogramsuchastheoneincorporatedinthe

X‐CTUʹTerminalʹtab.

Table5‐01. SummaryofnetworktopologiessupportedbytheXTend

EthernetRFModem

Point-to-Point

Definition An RF data link between two modems.

Sample Network Profile *

(Broadcast Communications)

Use default values for all modems.

Sample Network Profile *

(Acknowledged Communications)

All modems:

ATAM [auto-set MY (Source Address) parameter] **

ATDT FFFF [set Destination Address to 0xFFFF]

Basic RF Modes Streaming, Multi-Transmit, Repeater

Acknowledged RF Mode Acknowledged Mode

Point-to-Multipoint

Definition RF data links between one base and multiple remotes.

Sample Network Profile *

(Basic Communications)

Base:

ATMY 0 [set Source Address to 0x00]

ATDT FFFF [set Destination Address to 0xFFFF]

Remotes:

ATAM [auto-set MY (Source Address) parameter] **

ATDT 0 [set Destination Address to 0x00]

Sample Network Profile *

(Acknowledged Communications)

Base:

ATMY 0 [set Source Address to 0x00]

ATDT FFFF [set Destination Address to 0xFFFF]

ATRR 3 [set number of Retries to 3]

Remotes:

ATAM [auto-set MY (Source Address) parameter] **

ATDT 0 [set Destination Address to 0x00]

ATRR 3 [set number of Retries to 3]

Basic RF Modes Streaming, Multi-Transmit, Repeater, Polling

Acknowledged RF Modes Acknowledged, Polling

Peer-to-Peer

Definition

RF modems remain synchronized without use of master/server

dependencies. Each modem shares the roles of master and slave.

MaxStream's peer-to-peer architecture features fast synch times

(35ms to synchronize modems) and fast cold start times (50ms

before transmission).

Sample Network Profile *

(Basic Communications)

Use default values for all modems.

Sample Network Profile *

(Acknowledged Communications)

All modems:

ATAM [auto-set MY (Source Address) parameter] **

ATDT FFFF [set Destination Address to 0xFFFF]

ATRR 3 [set number of Retries to 3]

Basic RF Mode Streaming

Acknowledged RF Mode Acknowledged

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 61 62

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