XTR-8LR-USB
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User Manual
The technical features can change without forecasting. AUR°EL S.p.A doesn’t assume any responsability of demage due to the improper use of the device.
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AUR°EL S.p.A.
Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com
- email:
Rev 1.3 18/11/2019
Page
6
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17
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Source Address: Module or Node address from which the data packet starts (sender), composed by 2
bytes for a maximum node capability of 65536 nodes each network editable via AT command. (It’s
present only in net modality S10=1)
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Destination Address: 2 bytes destination node address. This address can be changed via AT
command. It must be forwarded on serial port before the payload.
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0xFF (default) address means a broadcasting message: in this case every node joining the network
(same network_ID) receives the message (It’s present only in net modality S10=1)
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Payload: from 1 to 247 bytes. When received, the message is forwarded to UART output only in case
Network_ID and Destination address are corresponding, otherwise it's eliminated. In case of
transmission, data coming from UART port are included in payload field.
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Payload CRC: checksum 2 Bytes
In normal TX and RX operations, it is mandatory to set up the 2 needed addresses for network functionality
in command mode, then move to NORMAL mode and send/receive data (payload) via UART port. To
transmit a radio data packet, User must sent on UART the Destination address before the payload. Data are
not yet encryped.
Picture 2:
Data radio packet frame in NORMAL Mode with addressing
In NORMAL mode no network (register S10=0) fields NETWORK ID, SOURCE ID e DESTINATION
ADDRESS will not present on radio protocol and 255 bytes payload will be at disposal
Picture 3:
Data radio packet frame in NORMAL Mode no network
Note:
By selecting spreading factor 6, the Header field is excluded. The payload must be length 15
Byte. This method is expected to LORA modulation in order to limit flight time and duty-cycle
transmission .
Payload of different length of 15 Byte, will be transmitted but rejected by the receiving unit.
Installing procedure and use
To start using the XTR-8LR-USB, proceed as follows:
