User's Manual

WA020100 - Smart Irrigation Controller
UMAOC001 Rev G
USER MANUAL
Page 9 of 33
5.2 Setting LoRaWAN communication parameters
5.2.1 Understanding Watersens LoRaWAN profile class
Watersens can be integrated in a LoRaWAN network as a class A device. It means the device implements a
bi-directional communication profile in which the data sent by server only can be received by the node after
performing an uplink transmission. Is in this moment when the node opens two short receive windows for the
downlink as it is shown in the figure below.
Figure 7. Uplink & Downlink diagram for a class A end device
This communication profile is the best option to preserve the life battery as it is the profile which the quantity
of node transmissions is minimal.
5.2.2 LoRaWAN communication parameters
Time to update status
Each 15 minutes Watersens checks if an irrigation operation must be performed. In case of any change, the
new output status is transmitted to the gateway.
On other hand it is possible to force an interval transmission according to the time defined in time to update
status parameter. The value can be from 0 to 100:
 0 - minimum update time. Each 3 minutes a transmission is done. This value is recommended only
to verify the communication or to accelerate the datarate adjustment in case of datarate adjustment
by the network.
 1...96 - number of 15 minutes lapses between forced transmissions carried out by Watersens (1:
15 minutes, 2: 30 minutes, ...)
 100 - Watersens transmission only in case of output status change