Table of Contents

Send data to end-devices

Data can be sent to end-devices. It can be achieved using the web interface from the Fleet ⇒ Send data menu (but also from other interfaces).

Data can be sent manually or through a CSV file

The web interface only displays the last message sent. The web interface displays all the queued messages.

List of available status:

Tx data list

Sending data from a CSV file

LoRa frames can be sent to end-devices from a CSV file, and all send frames can be downloaded from the web interface.

File Format

Templates can be downloaded from the templates page.

Input fields description:

Example

xxxxxxxx_tx_data.csv
18B20000000BAA,2,true,3,dGVzdA==
18B20000000BAA,5,false,3,dGVzdA==
18B20000000BAA,2,false,2,dGVzdA==

Class A communication

“Following each uplink transmission the end-device opens two short receive windows. The receive window start times are defined using the end of the transmission as a reference.”

“If the network intends to transmit a downlink to an end-device, it will always initiate the transmission precisely at the beginning of one of those two receive windows.”

LoRa class A transmission

Extract from the LoRaWan Specification (LoRa-alliance)

Class C communication

“Class C devices implement the same two receive windows as Class A devices, but they do not close the RX2 window until they need to send again. Therefore they may receive a downlink in the RX2 window at nearly any time, including downlinks sent for the purpose of MAC command or ACK transmission. A short listening window on RX2 frequency and data rate is also opened between the end of the transmission and the beginning of the RX1 receive window.”

LoRa class B transmission

Extract from the LoRaWan Specification (LoRa-alliance)