User's Manual
-14-
Frames
7.1.5. Start frames
:KHQWKHQRGHVWDUWVWRZRUNLQWKHSDUNLQJVORWLWZLOOVHQGIUDPHV7KHȴUVWRQHLVGHGLFDWHGWRWKHVHQVRUDQG
WKHEDWWHU\7KHVHFRQGRQHLVXVHGWRVHQGVRPHSDUDPHWHUVDERXWWKHFKRVHQFRQȴJXUDWLRQ
7.1.5.1. Start frame number 1
Byte Name Description
0 Basic data Detailed description in section “Frame”
1 Frame counter Detailed description in section “Frame”
2 Temperature
Temperature (Celsius degrees) from the node's internal sensor. The value
of temperature is a signed integer.
3 X axis reference MSB
Reference value from the sensor associated to the X axis. The value stored
in these two bytes is a 16-bit value in 2’s complement form.
4 X axis reference LSB
5 Y axis reference MSB
Reference value from the sensor associated to the Y axis. The value stored
in these two bytes is a 16-bit value in 2’s complement form.
6 Y axis reference LSB
7 Z axis reference MSB
Reference value from the sensor associated to the Z axis. The value stored
in these two bytes is a 16-bit value in 2’s complement form.
8 Z axis reference LSB
9 Battery voltage MSB
Battery voltage in millivolts. The value stored in these two bytes is an
unsigned 16-bit value.
10 Battery voltage LSB
Figure : Start frame number 1 structure
7.1.5.2. Start frame number 2
Byte Name Description
0 Basic data Detailed description in section “Frame”
1 Frame counter Detailed description in section “Frame”
2 )Ζ50:$5(B9(56Ζ21 Firmware version
3 10B67$57 Beginning hour of the night mode
4 10B3(5Ζ2' Duration in hours of the night mode
5 10B6/((3B7Ζ0( Sleep time between consecutive sensor measurements (during night mode)
6 10B.((3B$/Ζ9(
Elapsed time since last transmission to trigger a Keep-Alive frame (during
night mode)
7 5$'Ζ2B02'(
Selected transmission mode between Sigfox, LoRaWAN y their
combinations
8 6/((3B7Ζ0( Sleep time between consecutive sensor measurements
9 .((3B$/Ζ9( Elapsed time since last transmission to trigger a Keep-Alive frame
10 THRESHOLD Threshold for detecting a vehicle over the parking slot
Figure : Start frame number 2 structure