Transmission Of The Keep Alive Frame - ADEUNIS TEMP V4 IP68 LoRaWAN 863-870 Guide Utilisateur

TEMP V4 IP68 LoRaWAN 863-870 - Guide utilisateur / User guide version V3.1.1

2.4.5 Transmission of the Keep Alive frame

In the event mode, it is possible that the product would never send data frames. So to be sure that it is working properly a Keep Alive frame is
transmitted regularly (following diagram). Furthermore, in order to enable to measure the temperature on demand it is possible to cause the
sending of this frame using a magnet on the product during 3 seconds (at the same place of the start-up) or sending a 0x05 frame.
Parameters associated to this operating mode:
• Activation of the probes (register 324).
• Transmission period of the keep alive frame, from 20 seconds to 7 days
(register 300).
Example:
Register Encoding Value
S300 Decimal 8640
2.5. Class C LoRaWAN
The TEMP product is in class A by default but can be switched to Class C by configuration.
The class C enables the product to be in constant listening when it is not transmitting (no need for an uplink to receive a downlink). Thanks to
this mode it is possible to measure at any moment remotely the temperature (manually with a downlink).
WARNING: this mode can be activated only if the product is supplied by an external supply.
When the product is running in Class C, if the supply is cut off, the product enter in safety mode and activate a degraded mode (explained in the
Stop listening and
Measure and save
T° on the activated
Result
The keep alive frame is sent every:
8640x10 seconds =1440min so
24h (so once per day)
Return to class C
Power cut
Sending 0x36
«Power cut» «Power restored»
sending frames
probes
Sending memorized
operating mode
- 5 first alarm frames registered
- Last periodical frame registered
Sending 0x36
JOIN process
Yes
Power is back?
No
Stand-by mode
Period reached No
or magnet
detected?
Yes
Measure of the tem-
perature on activated
probes
Sending 0x30
frames
here-under diagram) that still allows
the product to ensure continuity of
measurement:
FR
EN
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