User Manual

SWH - Grain Condition Monitoring Device - Installation
and configuration Manual
6/(10)
Prod. #
Doc. #
Rev
Date
Author
010102
03
C
02/09/2022
SMV
SGS - IOT COMPETENCE CENTER
This document and information contained in it are confidential and are the property of Société Générale de Surveillance (SGS) . They may not in any
way be disclosed, copied, or used by anyone except as expressly authorized by SGS. The document should always be kept in a secure place and
should be destroyed or returned to SGS when it is no longer needed.
- The device covers an area of 8m of diameter and 350 Tons of grain:
4 LORAWAN SENSOR CONFIGURATION
In this section, the configuration of the device is explained.
4.1 DEFAULT CONFIGURATION
After powering the device, the led will light up in all possible combinations. Then, the device will try to connect to the
LoRa gateway, the led will blink red during the process. As soon as it is connected to the network, it will send an uplink
message and the led will flash
green. Then, it will send frames every 6 hours.
4.2 DOWNLINK COMMANDS TO CHANGE THE CONFIGURATION
It is possible to change the configuration of the device through the LoRa gateway via downlink frames. You can check if
the downlink has been correctly sent because the led will light up blue. The following are the different payloads for the
GCM v3 device:
1. Time Update (Little Endian)
To change the date and time of the device send a 4 byte frame with desired value in UNIX Timestamp on Port 4.
Example:
- Fri Oct 15 2021 06:45:14 GMT+0000
- 1634280314
- 6169237A
- 7A 23 69 61
2. Change transmission windows (Little endian)
To change the times at which the device sends data send a 2 byte frame with desired value in minutes (UTC Time)
on Port 5.
Example:
- Sending at 00:00 / 12:00
- 0 / 720 (Minutes)
- 0 / 2D0 (Big Endian)
- 00 00 / D0 02 (Little Endian)
3. Change region
To change the region in which the device must operate, send 1 byte on Port 6.
• REGION_AS923 → 00
• REGION_AU915 → 01
• REGION_EU868 → 05