Comark RF500 Instrukcja Użytkownika Pobierz pdf (Strona 14)

Meshing Transmitters and Backbone Transmitters

Whenever a RF512 or RF513 transmitter is powered by a RF520 mains adaptor it will

become a Meshing unit and will form part of the radio mesh network. However if external

power is removed it will revert back to a normal transmitter.

RF512 and RF513 have the option to become “Network Backbone” units or routers which

will intelligently forward messages on behalf of other transmitters. This option is enabled

using a setup option in the Gateway. See Adding Transmitters on page 28. Backbone

transmitters will form part of the mesh network continuously even when not powered by a

RF520. Due to the very large drain on the internal battery, backbone transmitters must be

powered using a RF520 mains adaptor. The internal battery is considered only as a

backup battery for backbone transmitters.

Automatic Data Retrieval (ADR)

The fact that transmissions between transmitters and the RF500 Gateway are

acknowledged ensures that the transmitters know exactly which data records have been

successfully transferred to the Gateway and those which must be re-transmitted.

Therefore if the Gateway is temporarily unable to receive or transmit messages for

whatever reason, data will not be lost during this period. When the Gateway is again able

to receive and transmit properly the transmitters will re-transmit those records which were

unable to be transmitted during the period of outage.

This re-transmission of data happens automatically without user intervention and results in

seamless graphical and tabular data with no gaps.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 41 42

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Comark RF500 Instrukcja Użytkownika Strona 14