Downlink Command

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

General Settings

Item Channel Type Byte Description
Reboot ff 10 1 ff
Report Interval ff 03 2 UINT16, Unit: s
LED Indicator ff 2f 1 00: Disable, 01: Enable
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 report interval as 20 minutes.
    ff03b004
    Channel Type Value
    ff 03 b004=>04b0=1200s=20 minutes

Time Settings

Item Channel Type Byte Parameter
UTC Time Zone ff 17 2 INT16/10
Device Time ff 11 4 Timestamp, UINT32, Unit: s
Examples:
  1. Set time zone as UTC-2.
    ff17ecff
    Channel Type Value
    ff 17 ecff=>ff ec=-20/10=-2

Screen Display Settings

Item Channel Type Byte Description
Screen Display ff 2d 1 00: disable, 01: enable
Last Update Display ff 85 1 00: disable, 01: enable
Screen Smart Mode ff 56 1 00: disable, 01: enable
Least Refresh Time ff 86 2 UINT16, Unit: min, Range: 2-1080
Screen Fresh Time ff 5a 2 UINT16, Unit: s
Hibernate Mode ff 75 6 Byte 1: 00=Disable, 01=Enable

Byte 2-3: Start Time, UINT16, Unit: minute, Range: 0-1439

Byte 4-5: End Time, UINT16, Unit: minute, Range: 0-1439

Byte 6: Repeat weekday, per bit 0=Disable, 1=Enable
Bit 7 6 ... 1 0
Sun. Sat. ... Mon. All
Note: If start time equals end time, it means all day.
Example:
  1. Disable the e-ink screen display.
    ff2d00
    Channel Type Value
    ff 2d 00: Disable the display
  2. Enable screen hibernate mode, set the hibernate time between 22:00 to next day 9:00 on week days (Monday to Friday).
    ff7501 2805 1c02 3e
    Channel Type Value
    ff 75

    Byte 1: 01 = screen hibernate enable

    Byte 2-3: 28 05=>05 28=1320 mins =22:00

    Byte 4-5: 1c 02 => 02 1c = 540 mins =9:00

    Byte 6: 3e=00111110 => Monday to Friday enable