Milesight LoRaWAN EM320-TH - Page 22

22
Note:
1. The device only uploads no more than 300 data records per range enquiry.
2. When enquiring the data in time point, it will upload the data which is closest to the search
point within the reporting interval range. For example, if the device reporting interval is 10
minutes and users send command to search for 17:00’s data, if the device find there is data
stored in 17:00, it will upload this data; if not, it will search for data between 16:50 to 17:10 and
upload the data which is closest to 17:00.
Example:
1. Enquire historical data between 2022/10/12 15:15:00 to 2022/10/12 16:35:00.
Reply:
-END-
20
ce (Historical Data)
Data time stamp (4 Bytes) + Data Contents (Mutable)
fd6c 74694663 347c4663
Channel
Type
Value
fd
6c (Enquire data in time
range)
Start time: 74694663 => 63466974 =
1665558900 =2022/10/12 15:15:00
End time: 347c4663 => 63467c34 =
1665563700 =2022/10/12 16:35:00
fc6c00
Channel
Type
Value
fc
6c (Enquire data in time range)
00: data enquiry success
20ce 9e744663 1001 5d
Channel
Type
Time Stamp
Value
20
ce (Historical
Data)
56991a63 =>
2022/10/12
16:03:53
Temperature: 1001=>0110=27.2°C
Humidity: 5d=>93=56.5%