PULSE915-LRW_User_Manual
Page
13
/
23
Short data frame format:
Name
Byte
Note
Frame header
1
Fixed 0x56
Frame number
and status
1
Bit 4- Bit 7: Frame number
Bit 3: NC
Bit 2: Magnetic interference flag, 0 means normal, 1 means abnormal.
Bit 1: Broken line sign, 0 means normal, 1 means abnormal
Bit 0: Low voltage alarm flag, 0 means normal, 1 means abnormal
Address field
4
The device address, the factory default is the last 4 bytes of LoRaWAN
module DevEUI, which can be modified by command.
Data area
4
BCD code
，
Unit L, current cumulative number
Checksum
1
Accumulate sum, the cumulative sum of one byte of data from the frame
header to the check
Long data frame format:
Name
Byte
Note
Frame header
1
Fixed 0x55
Frame number
1
Data frame accumulator, value range 0 to 255, cyclic accumulation
Address field
4
The device address, the factory default is the last 4 bytes of LoRaWAN
module DevEUI, which can be modified by commands.
Function code
1
Fixed 0x01
Data area
4
BCD code, unit L, current cumulative number
Freeze data on
previous day
4
BCD code, unit L
Clock
6
Format is Year, month, day, hour, minute
Battery voltage
1
Current battery voltage, the actual voltage value needs to be divided by
10
Status byte
1
Bit 4-Bit 7: Reserved, the default is 0
Bit 3: NC, the default is 0
Bit 2: Magnetic interference flag, 0 means normal, 1 means abnormal.
Bit1: Broken line sign, 0 means normal, 1 means abnormal
Bit 0: Low voltage alarm flag, 0 means normal, 1 means abnormal
