Tamper Detection - ADEUNIS LoRaWAN AS-923 Pulse Guide Utilisateur

LoRaWAN AS-923 Pulse - Guide utilisateur / User guide version V1.0.0
• Enabling and Configuring inputs (register 320)
• History configuration (register S321)
• Debounce timer period (register S322)
• Flow calculation period (register S325)
• Alarm thresholds (registers S326 and S327)
A complete list of the registers can be found in paragraph 3.4.
FR
Example :
Register Value encoding
S320 Hexadecimal
EN
S321 Hexadecimal
S322 Hexadecimal
S325 Decimal
S326 Decimal
S327 Decimal

2.2.4 Tamper detection

The product allows detection of state change on the tamper input of each channel (rising edge detected on the input normally held to ground).
The product wakes up regularly (according to the periods defined in registers S332 and S334) and checks the status of the tamper input of each
of the channels having active fraud detection.
The tamper alarm is stored if there are several successive detections (configurable in registers S333 and S335) and transmitted within the next
daily frame.
The alarm is automatically deactivated after the daily frame is sent.
The settings associated with this mode of operation are:
• Enabling and Configuring inputs (register 320)
• Période de scrutation de la fraude 1 (registre 332)
• Seuil de détection fraude 1 (registre S333)
• Période de scrutation de la fraude 2 (registre 334)
• Seuil de détection fraude 2 (registre S335)
A complete list of the registers can be found in paragraph 3.4.
Value Result
0x39 Channel A :
• Activated
• Meter other than gas
• Tamper input activated
Channel B :
• Activated
• Gas meter
• Tamper input disabled
0x02 Channels A and B : historical mode with backup of the counters every hour and
transmission every 24h so 24 values per counter
0x57 Debounce :
• Channel A = 500ms
• Channel B = 100ms
60 Flow calculation period (channels A and B) = 60min
10 000 Flow alarm threshold (channel A) = 10,000 pulses per hour
30 000 Flow alarm threshold (channel B) = 30,000 pulses per hour
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