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.	Years 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:	• Mode:
	• Communication type: Wireless M-Bus	Mode 5
	• Power:	Mode 7 (optional)
	<25 mW (868MHz)	• Encryption: AES-128
	• Transmitting frequency:	• Activation: Self-activated after passed 10L of
	868,95 MHz	volume
	• Band: 50 kHz	• Max bytes of data telegram: 255 bytes
	• Protocol:	• Data telegram structure: Selected according to
	T1 OMS	the data tables below
	S1 (optional)

© Danfoss | 2022.03

AQ409156171501en-010101 | 1

Operating guide	SonoMeter 40, SonoMeter 40c - Wireless M-Bus protocol description

2. OMS 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 service telegram	-
	M field	3-4	2	D3 10	Manufacturer code	-
					DFS – Danfoss A/S
	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	-
					Device type
	Medium	10	1	04	04 – Heating application	-
					0D – Heating / Cooling application
	CI field	11	1	xx	Control Information	-
	Count	12	1	xx	Progressive count (access number = transmission counter)	-
	Status byte	13	1	xx	Contains flag of alarm	-
	Signature	14-15	2	xx xx	Configuration word (ciphering OMS with profile A: xx xx or	-
					not ciphering: 00 00)
	AES-verify	16-17	2	2F 2F	Encryption verification field (if the transmission is not	Opt.
					enabled, this field is missing)
	Data	xx…xx	-	xx…xx xx	User Data telegram structure can be selected individually	-
				xx xx

3. Main User Data telegram structure

	Parameter	Bytes		No. of Data Bytes	Units	Description
		(DIF VIF)
	Date and Time	04 6D		4	Type F	32-bit integer
	Date and Time of error starting	34 6D		4	Type 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
		04 86 3B			kWh
	Energy for Heating	04 8E 3B		4	MJ	32-bit integer
		04 FB 8D 3B			Mcal
		04 86 3C			kWh
	Energy for Cooling*	04 8E 3C		4	MJ	32-bit integer
		04 FB 8D 3C			Mcal
		84 10 86	3x		kWh	32-bit integer
	Energy of Tariff 1 *	84 10 8E	3x	4	MJ	x = B – for Heating energy,
		84 10 FB 8D 3x			Mcal	x = C – for Cooling energy
		84 20 86	3x		kWh	32-bit integer
	Energy of Tariff 2 *	84 20 8E	3x	4	MJ	x = B – for Heating energy,
		84 20 FB 8D 3x			Mcal	x = C – for Cooling energy
	Volume	04 13		4	0,001 m3	32-bit integer
	Volume of Pulse Input 1 *	84 40 13		4	0,001 m3	32-bit integer
	Volume of Pulse Input 2 *	84 80 40 13		4	0,001 m3	32-bit integer
	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 on meter’s configuration and request

4. Hours Logger Data telegram structure

Parameter	Bytes (DIF VIF)			No. of Data 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	0,001 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 on meter’s configuration and request

2 | AQ409156171501en-010101

© Danfoss | 2022.03