Downlink Command

This device supports downlink commands for configuration and control. The downlink application port is 85 by default.

General Setting

Item Channel Type Byte Description
Reboot ff 10 1 ff
Collect Interval ff 02 2 UINT16, Unit: s
Report Interval ff 03 2 UINT16, Unit: s
Data Storage ff 68 1 00: Disable, 01: Enable
Data Retransmission ff 69 1 00: Disable, 01: Enable
Data Retransmission Interval ff 6a 3 Byte 1: 00

Byte 2-3: UINT16, Unit: s, Range: 30~1200, Default: 600
Example:
  1. Reboot the device.
    ff10ff
  2. Set collect interval as 20 minutes.
    ff02b004
    Channel Type Value
    ff 02 b004=>04b0=1200s=20 minutes
  3. Set the data retransmission interval as 1200s.
    ff6ab004
    Channel Type Value
    ff 6a b004=>04b0=1200s

Temperature Threshold Setting

Channel Type Byte Description
ff 06 9 Byte 1: c8=Disable, c9=Below (min. threshold), ca=Over (max. threshold), cb=Within, cc=Below or over

Byte 2-3: Minimum threshold, INT16/10, Unit: °C

Byte 4-5: Maximum threshold, INT16/10, Unit: °C

Byte 6-9: 00000000
Example:
When temperature is below 20°C or over 30°C, it will upload current value immediately.

ff06cc c8002c0100000000
Channel Type Value
ff 06

cc=>11001 100100=> below or over

Min. threshold: c8 00=>00 c8=200/10=20°C

Max. threshold: 2c 01 => 01 2c =300/10=30°C