User Manual
R-GWR SERIES
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BE REPRODUCED WITHOUT PRIOR PERMISSION.
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Doc: MI00568-1-EN
Page 8
OPERATING PRINCIPLE
3.
The radio sensors send data via the Lora radio system. This technology allows you to travel long distances
and keep battery consumption at very low levels.
SENDING DATA FROM THE SENSORS TO THE R-GWR GATEWAY
3.1.
The radio sensor can send data in two ways:
1)
Timed
2)
Timed + Event
In mode 1 the sensor sends data with a configurable time interval.
In mode 2 the sensor sends the data with a configurable time interval but, in the event of a digital input event,
it immediately sends the data.
Each R-GWR gateway can manage up to a maximum of 32 sensors.
COMMUNICATION WITH THE R-GWR GATEWAY
3.2.
When the gateway receives a packet from an associated sensor it responds with an acknowledge packet.
If the acknowledge packet is not received, the sensor adds a random time (from 1 to 8 seconds) to the next
sending.
If sending an alarm packet (and if sending on "alarm" event is enabled) the sensor makes 5 attempts with a
random delay between them before returning to low consumption again.
When the R-GWR gateway sends the acknowledge packet, it also appends the current configuration (so if you
change the sensor configuration in the gateway this will be sent with the next communication).
When the ALARM parameter is active, an IN0 or IN1 input event immediately activates the sending of the
packet.
ATTENTION!
IT IS ALWAYS POSSIBLE TO FORCE SENDING CURRENT DATA FROM THE SENSOR TO THE
GATEWAY BY PRESSING THE IN3 PAIRING BUTTON.
ATTENTION!
IF THE R-GWR GATEWAY REMAINS OFF FOR A LONG TIME, IT IS NECESSARY TO TURN OFF THE
RADIO SENSORS IN ORDER TO NOT DISCHARGE THE BATTERIES
