SEND DATA response - MD30

MD30 Interface Description

Document code
M212201EN
Revision
D
Language
English (United States)
Product
MD30
Document type
User guide

Format

<message start> <message sender ID> <message receiver ID> <message ID> <message number> <data length> <interface version number> <error code> <data analyze count> <data status warning> <data status error> <air temperature> <relative humidity> <dew point temperature> <frost point temperature> <surface temperature> <surface state> <EN 15518 surface state> <grip> <water layer thickness> <ice layer thickness> <snow layer thickness> <unit status info> <unit error bits> <CRC>
Field

Offset

Size in bytes

Message start

0 1

Message sender ID

1 1

Message receiver ID

2 1

Message ID

3 1

Message number

4 1

Data length

5 ... 6 2

Interface version

7 1

Error code

8 1
Data analyze count 9 ... 10 2
Data status warning 11 ... 12 2
Data status error 13 ... 14 2
Air temperature 15 ... 18 4
Relative humidity 19 ... 22 4
Dew point temperature 23 ... 26 4
Frost point temperature 27 ... 30 4
Surface temperature 31 ... 34 4
Surface state 35 1
EN 15518 surface state 36 1
Grip 37 ... 40 4
Water layer thickness 41 ... 44 4
Ice layer thickness 45 ... 48 4
Snow layer thickness 49 ... 52 4
Unit status info 53 ... 56 4
Unit error bits 57 ... 60 4

CRC

61 ... 62 2

Example

0xab 0x01 0x00 0x20 0x0a 0x36 0x00 0x44 0x00 0xfc 0xee 0x00 0x00 0x00 0x00 0x66 0x66 0xc4 0x41 0x5c 0x8f 0x51 0x42 0xad 0x83 0x57 0x41 0xad 0x83 0x57 0x41 0x3a 0x0a 0xbf 0x41 0x01 0x01 0x85 0xeb 0x51 0x3f 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x52 0xb3
Field Bytes Value

Message start

0xab 0xab

Message sender ID

0x01 1

Message receiver ID

0x00 0

Message ID

0x20 0x20

Message number

0x0a 10

Data length

0x36 0x00 54

Interface version

0x44 D

Error code

0x00 0
Data analyze count 0xfc 0xee 61180
Data status warning 0x00 0x00 0
Data status error 0x00 0x00 0
Air temperature 0x66 0x66 0xc4 0x41 24.55
Relative humidity 0x5c 0x8f 0x51 0x42 52.39
Dew point temperature 0xad 0x83 0x57 0x41 13.47
Frost point temperature 0xad 0x83 0x57 0x41 13.47
Surface temperature 0x3a 0x0a 0xbf 0x41 23.88
Surface state 0x01 1 = Dry
EN 15518 surface state 0x01 1 = Dry
Grip 0x85 0xeb 0x51 0x3f 0.82
Water layer thickness 0x00 0x00 0x00 0x00 0.00
Ice layer thickness 0x00 0x00 0x00 0x00 0.00
Snow layer thickness 0x00 0x00 0x00 0x00 0.00
Unit status info 0x00 0x00 0x00 0x00 0
Unit error bits 0x00 0x00 0x00 0x00 0

CRC

0x52 0xb3 -

The data analyze count starts from 0 and is incremented at the maximum measurement rate supported by the mobile road sensor. The counter goes to 0 after reaching the maximum value

When continuous sending is initiated, the message number of the request message is used in the first data message and then incremented by 1 every time a new message is generated and sent.