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ATIM_ACW-MR4_UG_EN_V1.5
Downlink
This functionality is available on ACW-MR4 fulfilling the following conditions:
Application software:
Radio firmware:
Sigfox version
V1.0.4
V5.9.3.2
LoRaWAN version
V1.0.4
V5.1.1
The operation of the Downlink is explained in the document ATIM_ACW-DLConfig_UG_FR_v1.4, relating to version
V1.2.0 of the ATIM Downlink Protocol (see this document for all parameters and commands common to all products).
The parameters specific to ACW-MR4 are as follows:
Configuration of the frame parameters (sending period, number of samples, etc.)
Parameter
code (Byte 1)
Payload
Length (Byte 2)
Parameter
Index (Byte 3)
Parameter
value (Byte 4)
Parameter
value (Byte 5)
Parameter value
(Byte 6)
0xD4
0x04
0x00
0b00YY0ZZZ
0xYY
0xZZ
For byte 4, the two bits YY correspond to the history depth (max = 3) and the three bits ZZZ correspond to the number
of samples per frame (max = 7).
Bytes 5 and 6 correspond to the period for sending a frame (= 0xYYZZ) ranging from 1 minute to 255 hours (15,300
minutes).
EXEMPLE
Byte 4 = 0x13
4 samples per frame + addition of the 4 samples sent to the previous frame.
Byte 5 = 0x3C and byte 6 = 0x00
Emission period = 0x0254 = 596 minutes
Inputs setup
Parameter code (Byte 1)
Parameter value (Byte 2)
0xXX
(depends on the input to configure)
0bAABB0CCC
Each input being independently configurable, there is a different parameter code for each of them:
Input 1 => parameter code = 0x16
Input 2 => parameter code = 0x17