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
UTC Time Zone ff 17 2 INT16/10
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 report interval as 20 minutes.
    ff03b004
    Channel Type Value
    ff 03 b004=>04b0=1200s=20 minutes
  4. Set time zone as UTC-2.
    ff17ecff
    Channel Type Value
    ff 17 ecff=>ff ec=-20/10=-2

Temperature Threshold Setting

Channel Type Byte Description
ff 06 9 Byte 1: 08=Disable, 09=Below (min. threshold), 0a=Over (max. threshold), 0b=Within, 0c=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:
Set a temperature threshold as below 15°C or over 30°C.
ff060c96002c0100000000
Channel Type Value
ff 06 0c=Below or over

Min. threshold: 96 00=>00 96=150/10=15°C

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

Interface Setting

Item Channel Type Byte Description
Interface Type ff c3 1

01: Digital, 02: Counter
Pulse Filter ff a3 2 0100: Disable, 0101: Enable
Modify Count Value ff 92 5 Byte 1: 01

Byte 2-5: Initial counting value, UINT32
Pulse Value Conversion ff a2 9 Byte 1: 00=Disable, 01=Enable

Byte 2-3: Water conversation value, UNIT16/10

Byte 4-5: Pulse conversation value, UINT16/10

Byte 6-9: Unit, ASCII code
Pulse Counter ff 4e 2

0100: Clean the count, 0101: Stop counting

0102: Start counting
Example:
Set pulse conversion: 1ml=10 pulses.

ffa2 01 0a00 6400 6d6c0000
Channel Type Value
ff a2 01=Enable

Water conversion: 0a00=>00 0a=10/10=1

Pulse conversion: 6400=>00 64=100/10=10

Unit: 6d 6c 00 00=>ml (hex to ascii)

Water Flow Alarm Setting

Item Channel Type Byte Description

Duration for Water Flow Determination

 ff a4 2 UINT16, unit: s

Water Flow Threshold Alarm

 ff a1 7 Byte 1: 01

Byte 2: 00=Water flow threshold setting, 01=Water flow timeout alarm, 02=Water outage timeout alarm

Byte 3: 00=Disable, 01=Enable

Byte 4-7: timeout interval, unit: s
Example:
Enable water outage timeout alarm and set timeout interval as 10 minutes.

ffa1 01 0001 00000000 ff a1 01 0201 0a000000
Channel Type Value
ff a1 00=Water flow threshold setting

01=Enable
ff a1 02=Water outage timeout alarm

01=Enable

0a000000=>0000000a=10 minutes

D2D Setting

Item Channel Type Byte Description
D2D Key ff 35 8 The first 16 digits of D2D key, and the last 16 digits are fixed as 0.
D2D Feature ff 79 4 Byte 1:

01=Water outage timeout alarm

02=Water outage timeout alarm release

03=Water flow timeout alarm

04=Water flow timeout alarm release

05=DI from low to high

06=DI from high to low

Byte 2: 00=Disable, 01=Only D2D, 03=D2D & LoRa Uplink

Byte 3-4: D2D Command
Example:
  1. Set D2D Key as 12345678123456780000000000000000.
    ff35 1234567812345678
    Channel Type Value
    ff 35 1234567812345678
  2. When water outage timeout alarm triggers, send D2D command 0110.

    ff7901011001
    Channel Type Value
    ff 79 01=Water outage timeout alarm

    01=Only D2D

    D2D Command: 10 01=>0110