FRIENDCOM PULSE915-LRW, Руководство пользователя

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PULSE915-LRW_User_Manual
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Checksum 1
Accumulate sum, the cumulative sum of one byte of data from the frame
header to the check
Terminator 1 Fixed 0x16
Take long data frame as an example
55 05 00 31 00 29 01 00 39 58 68 00 39 50 00 19 12 13 16 31 09 36 02 FD 16
Bytes Remarks
55 Frame header, fixed to 0x55
05 05 represents the 5th frame data sent by the module
00 31 00 29
It is the address of device, which is taken from the last four bits of DevEUI of
LoRaWAN module
01 Reserved, fixed to 0x01
00 39 58 68
It is the current reading of the meter, representing 395868 liters, converted to
395.868 cubic meters
00 39 50 00
It is the value of freezing in previous day, representing 395000 liters,
converted to 395 cubic meters
19 12 13 16 31 09
It is the current time of the equipment when transmitting this frame,
representing 16:31:09 on December 13, 2019
36 36 represents the current battery voltage is 3.6V
02
02 is converted to binary 00000010, at this time, B0 is 0, B1 is 1, and B2 is 0,
which respectively represents normal voltage, disconnected line and no
magnetic interference.
FD
FD is the checksum, cumulative sum from the frame header to the previous
byte
16 End character, fixed to 0x16
4.2
Setting Command
Parameters of PULSE915-LRW can be set and read by AT command, the format of
commands is shown in the following table.
Table 4- 1 Format of commands
Command Note Ack (Success) Ack (Failure)