Danfoss SonoMeter 40, SonoMeter 40c Operating guide
Operating guide
SonoMeter 40, SonoMeter 40c
Wireless M-Bus protocol description
Table of Contents 1. Description .............................................................................................................................. 1
2. OMS telegram structure ......................................................................................................... 2
3. Main User Data telegram structure ....................................................................................... 2
4. Hours Logger Data telegram structure ................................................................................ 2
5. Days Logger Data telegram structure................................................................................... 3
6. Months Logger Data telegram structure .............................................................................. 3
7. Ye a r s Logger Data telegram structure ................................................................................. 4
8. Definition of the Type F format ............................................................................................. 4
9. Definition of the Type G format ............................................................................................. 4
10. Definition of the Status code ................................................................................................. 4
11. Example of data telegram ...................................................................................................... 4
1. Description Main data:
• Communication type: Wireless M-Bus
• Power:
<25 mW (868MHz)
• Transmitting frequency:
868,95 MHz
• Band: 50 kHz
• Protocol:
T1 OMS
S1 (optional)
• Mode:
Mode 5
Mode 7 (optional)
• Encryption: AES-128
• Activation: Self-activated after passed 10L of
volume
• Max bytes of data telegram: 255 bytes
• Data telegram structure: Selected according to
the data tables below
© Danfoss | 2022.03 AQ409156171501en-010101 | 1
Operating guide SonoMeter 40, SonoMeter 40c - Wireless M-Bus protocol description
2. OMS telegram structure
3. Main User Data telegram
structure
Field Code Byte pos. No. of Bytes Value Description Note
L field 1 1 xx Message length C field 2 1 xx Control Field: indicates ser vice telegram -
M field 3-4 2 D3 10
A field 5-6 -7-8 4 xx xx xx xx Serial number of the device (8-digit) -
Generation 9 1 xx wMbus generation of the device -
Medium 10 1 04
CI field 11 1 xx Control Information -
Count 12 1 xx Progressive count (access number = transmission counter) -
Status by te 13 1 xx Contains flag of alarm -
Signature 14 -15 2 xx xx
AES-verify 16 -17 2 2F 2F
Data xx…xx -
Parameter
Date and Time 04 6D 4 Typ e F 32-bit integer
Date and Time of error starting 34 6D 4 Typ e F 32-bit integer
Error code 34 FD 17 4 - 32-bit integer
Battery operation time 04 20 4 sec 32-bit integer
Working time without error 04 24 4 sec 32-bit integer
Energy for Heating
Energy for Cooling*
Energy of Tariff 1 *
Energy of Tariff 2 *
Volume 04 13 4 0,0 01 m
Volume of Pulse Input 1 * 84 40 13 4 0,0 01 m
Volume of Pulse Input 2 * 84 80 40 13 4 0, 001 m
Power 04 2B 4 W 32-bit integer
Flow rate 04 3B 4 0, 001 m3/h 32-bit integer
Flow Temperature 02 59 2 0.01 °C 16-bit integer
Return Temperature 02 5D 2 0.01 °C 16-bit integer
Temperature Difference 02 61 2 0.01 K 16-bit integer
Serial Number 0C 78 4 - 32-bit integer BCD8
* Depends o n meter’s configuration a nd request
xx…xx xx
Bytes
(DIF VIF)
04 86 3B
04 8E 3B
04 FB 8D 3B
04 86 3C
04 8E 3C
04 FB 8D 3C
84 10 86 3x
84 10 8E 3x
84 10 FB 8D 3x
84 20 86 3x
84 20 8E 3x
84 20 FB 8D 3x
Manufacturer code
DFS – Danfoss A/S
Device type
04 – Heating application
0D – Heating / Cooling application
Configuration word (ciphering OMS with profile A: xx xx or
not ciphering: 00 00)
Encryption verification field (if the transmission is not
enabled, this field is missing)
User Data telegram structure can be selected individually -
xx xx
No. of Data Bytes Units Description
4
4
4
4
kWh
MJ
Mcal
kWh
MJ
Mcal
kWh
MJ
Mcal
kWh
MJ
Mcal
x = B – for Heating energy,
x = C – for Cooling energy
x = B – for Heating energy,
x = C – for Cooling energy
3
3
3
32-bit integer
32-bit integer
32-bit integer
32-bit integer
32-bit integer
32-bit integer
32-bit integer
-
-
-
Opt.
4. Hours Logger Data
telegram structure
Parameter Bytes (DIF VIF) No. of D ata Bytes Units Description
Logger Date and Time C4 86 03 6D 4 Type F 32-bit integer
Average Power C4 86 03 2B 4 W 32-bit integer
Average Flow Rate C4 86 03 3B 4 0,0 01 m3/h 32-bit integer
Average Flow Temperature C2 86 03 59 2 0 .01 °C 16-bit integer
Average Return Temperature C2 86 03 5D 2 0.01 °C 16-bit integer
Logger Minimum Flow E4 86 03 3B 4 0,001 m3/h 32-bit integer
Logger Maximum Flow D4 86 03 3B 4 0,001 m3/h 32-bit integer
Logger Minimum Temperature Difference E2 86 03 61 2 0.01 K 16-bit integer
Logger Maximum Temperature Difference D2 86 03 61 2 0.01 K 16-bit integer
Logger error code F4 86 03 FD 17 4 - 32-bit integer
Logger working time without error C4 86 03 24 4 sec 32-bit integer
* Depends o n meter’s configuration a nd request
2 | AQ409156171501en-010101 © Danfoss | 2022.03
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