Historical Data Enquiry - IME Milesight EM300 Series User Manual

06 (Set Threshold
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4. Set D2D settings of temperature threshold trigger.
Channel
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5.4 Historical Data Enquiry

EM300 series sensor supports sending downlink commands to enquire historical data for
specified time point or time range. Before that, ensure
storage feature was enabled to store the
Command format:
Channel
fd 6b (Enquire data in time point)
fd 6c (Enquire data in time range)
fd 6d (Stop query data report)
ff 6a (Report Interval)
Reply format:
Channel Type
fc 6b/6c
20 ce (Historical Data)
Data format:
Sensor
EM300-TH
Alarm)
ff 79 01011001
Type
Number: 01, temperature threshold trigger
79 (Set D2D
settings )
data.
Type
4 Bytes, unix timestamp
Start time (4 bytes) + End time (4 bytes),
Unix timestamp
ff
2 Byte, unit:s,
Range: 30~1200s (60s by default)
00: data enquiry success
01: time point or time range invalid
02: no data in this time or time range
Data time stamp (4 Bytes) + Data Contents (Mutable)
Temperature + Humidity
CTRL:cc =>11001100
100 = below or above
Min:96 00=> 00 96 = 15°C
Max: 2c 01=>01 2c = 30°C
Value
Function: 01, only use D2D
D2D Command: 1001=>0110
the device time is correct and data
Description
Description
Description
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