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User Manual v1.4.3
HYDRODIGIT
Payload LoRaWAN
he payload is composed by a total of 9 bytes (11 bytes if the temperature data sending is enabled):
Field
Byte
Application code
45
Absolute meter counting (size 1 byte LSB)
XX
Absolute meter counting (size 1 byte)
XX
Absolute meter counting (size 1 byte)
XX
Absolute meter counting / reverse flow (size 1 byte MS-nibble for X/Y)
XY
Reverse flow (size 1 byte LSB)
YY
Reverse flow (size 1 byte)
YY
Reverse flow (size 1 byte)
YY
Alarms (bit 0...5)
Diameter (bit 6)
KK
Medium (bit 7)
Temperature (size 1 byte MSB)
TT
Temperature (size 1 byte LSB)
TT
Absolute meter counting means: ABS [Positive flow counting (X) – Negative flow counting (Y)].
The temperature must be defined up to the tenth part of a degree (°C).
The VIF is defined as a constant (liters) for absolute counting and reverse flow.
The temperature is handled with a 2-complement. Negative temperature, for example, will be FF 33 to
represent -20.5 ° C.
Alarms:
Bit 0: Water leak
Bit 1: wrong installation
Bit 2: Overflow
Bit 3: Burst
Bit 4: Reverse flow
Bit 5: Low battery
