Radio Frames; Frame Format; Uplink - Analog Input - ADEUNIS SIGFOX SENSOR Mode D'emploi

SIGFOX SENSORS - Mode d'emploi / User guide version V2.1.1

4. RADIO FRAMES

The SIGFOX SENSORS transmits raw information from meters using the SIGFOX network
• A periodic data frame for the analog measure
• A event data frame for the digital input
• A keep-alive data frame (only in dry contact using)
This section contains information you can use to decode the frame as well as the location in the frame of information concerning the meter or
meters associated with the SIGFOX SENSORS.
Note: this chapter describes the elements dedicated to the SIGFOX SENSORS.

4.1. Frame format

• SIGFOX EUROPE
• RF data rate : 100bps
• Uplink payload : up to 12 bytes
• Downlink payload : up to 8 bytes

4.1.1 Uplink - Analog Input

Data Frame timing for a analog product
UPLINK
Periodicity
0x03
0x01
Product start
(with magnet)
Starting Frame
• Code 0x01 : Sensor measure datas
• Code 0x03 : Device configuration
Payload uplink up to 12 bytes, data format : Little endian, low significant byte first.
Unsignificant bytes are not transmitted (X)
0 1 2
Code Status
Channel 1
0x01 Cf Status
Type
Device
0x03 Cf Status
Type
Numerical value conversion
For a 4-20mA sensor : Value = NumericalValue * 2.048/(2^20*99.8)
For a 0-10V sensor : Value = NumericalValue * (2.048*337,3)/(2^20*67.3)
Example NumericalValue :
Read value : 32 2A 00 00
Hexadecimal value : 00 00 2A 32
NumericalValue = 10 802
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0x01
0x01
Data Frame
3 4 5
Measure sensor 1 (LSB First)
Channel
Transmit period
On/Off
0x03
New JOIN demand
(with magnet)
6 7 8
PAYLOAD
Channel 2
Measure sensor 2 (LSB first)
Type
Channel 1 Channel NA
Type 2 Type (0x00)
0x01
0x01
9 10 11
X X
Switch
X X
Value
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