User's Guide

16
6.3 Downlink Commands
WS302 supports downlink commands to configure the device. The application port is 85 by
default.
Example:
1. Set reporting interval as 20 minutes.
2. Set weighting mode to A-weighting and disable fast time weighting.
3f 02 => 02 3f = 575, L
AF
= 575÷10 = 57.5 dBA
da 01 => 01 da = 474, L
Aeq
= 474÷10 = 47.4 dBA
6a 02 => 02 6a = 618, L
AFmax
= 618÷10 = 61.8 dBA
Channel
Type
Description
ff
03 (Set Reporting Interval)
2 Bytes, unit: s
06 (Set Threshold Alarm)
5 Bytes
Byte 1-3: 0a0000
Byte 4-5: threshold value*10
2f (LED Indicator)
00: disable, 01: enable
5d (Set Weighting Mode)
2Bytes
Byte 1:
01: A-weighting,
02: C-weighting
Byte 2:
00: disable time weighting,
01: enable fast time weighting
10 (Reboot Device)
1 Byte, ff
ff03b004
Channel
Type
Value
ff
03 (Set Reporting
Interval)
b0 04 => 04 b0 = 1200s
= 20 minutes
ff5d0100
Channel
Type
Value
ff
5d (Set Weighting Mode)
01: A-weighting,
00: disable time weighting