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SIGFOX SENSORS - Mode d'emploi / User guide version V1.3
3. Radio frames
The SIGFOX SENSORS transmits raw information from meters using the SIGFOX network
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 commun elements to the SIGFOX SENSORS and SIGFOX SENSORS products. We will retain in this case that the
elements corresponding to SIGFOX SENSORS.
3.1. Frame format
•
SIGFOX EUROPE
•
RF data rate : 100bps
•
Uplink payload : up to 12 bytes
•
Downlink payload : up to 8 bytes
3.1.1 Uplink
Payload uplink up to 12 bytes, data format : Little endian, low significant byte first.
Frame types :
•
Code 0x00 : reserved
•
Code 0x01 : sensor measure datas
•
Code 0x03 : device configuration
Unsignificant bytes are not transmitted (X)
0
1
2
Code
Status
0x00
Cf Status
Sensor1
0x01
Cf Status
Type
Device
0x03
Cf Status
Type
3.1.2 Status
Product status.
•
Low bat error = 1 if supply voltage <= 2.5 V, else 0
•
Configuration switch error = 1 if no switch consistency, else 0
•
HW error = 1 if hardware failure, else 0
•
Configuration done = 1 if last downlink frame was a right frame and configuration done, else 0
Alarm/Status
Bit7
Frame counter
No error
Low bat error
Configuration
Switch error
HW error
Configuration
done
3
4
Measure sensor 1 (LSB First)
Channel
Transmit period
On/Off
Bit6
Bit5
0x0 à 0xF
5
6
7
PAYLOAD
RESERVED
Sensor2
Measure sensor 2 (LSB first)
Type
Channel
Channel
1 Type
2 Type
Bit4
Bit3
HW
0
0
0
1
0
8
9
10
X
SENSORS
Memo
Input
X
switch
type
Bit2
Bit1
Bit0
Switch
Low bat
Configuration
0
0
0
0
1
0
1
0
0
0
0
0
0
0
1
11
X
X
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