Configuration options

Elvaco OTC app configuration options

Table 170. All configuration options

Field name (Abbr.)

Description

Default value

Locked device & correct PAK or open device

Locked device & no PAK

Downlink

Meter ID

Meter identification number of the meter. Not configurable.

N/A

Readable

Readable

N/A

Power mode

Used to activate/deactivate the module.

Passive

Readable / Writeable

Readable

N/A

Message format

The message format determines the structure and payload of the telegram sent from the module.

0x15 (Standard)

Readable / Writeable

Readable

Writeable

EcoMode

When activated, 11+1 years of battery-life is guaranteed by adapting the transmit interval of the module to current signal conditions.

On

Readable / Writeable

Readable

Writeable

Transmit interval

Sets the number of minutes between each transmission from the module

60 min

Readable / Writeable

Readable

Writeable

Date & Time

Date and time set for the meter.

N/A

Readable

Readable

N/A

Set absolute time

Sets the time of the meter.

N/A

Writeable

N/A

N/A

Set Time Relative

Adjusts the time of the meter relative to the current time

N/A

N/A

N/A

Writeable

Set UTC offset

Sets the UTC offset of the meter.

N/A

Readable / Writeable

Readable

Writeable

Configuration Lock

Locks the module to prevent unauthorized access.

Open

Readable / Writeable

Readable

Writeable

LoRaWAN® settings

Device EUI

Unique module identification number. Not configurable.

Device-unique 64-bit number

Readable

Readable

N/A

Activation type

Sets the way the device joins the LoRaWAN® network.

OTAA

Readable / Writeable

Readable

N/A

Network join

Displays whether the module has joined the LoRaWAN® network or not.

N/A

Readable

Readable

N/A

Join EUI

Application ID that determines where data ends up.

0x 94 19 3A 03 0B 00 00 01

Readable / Writeable

Readable

N/A

Device address

32-bit address used by the module to identify itself on the LoRaWAN® network.

N/A

Readable / Writeable

N/A

N/A

Current data rate

The current data rate used for the module.

N/A

Readable

Readable

N/A


Downlink configuration options

Table 171. Downlink commands

Field name

TLV

Number of bytes in configuration

Configuration

Example

Configuration lock

0x05

0x01

0x00 = Locked 

0x01 = Open

0x00050101 

(Enables configuration lock)

Transmit interval

0x06

0x02

0xNumber of minutes between transmission 

(lsByte -> msByte)

0x0006021E00 

(Sets the Tx interval to 30 minutes)

Message format

0x07

0x01

0x15 = Message format Standard 

0x16 = Message format Compact 

0x17 = Message format JSON

0x18 = Message format Scheduled-daily redundant

0x19 = Message format Scheduled-Extended 

0x1A = Message format Combined heat/cooling 

0x1B = Message format Heat Intelligence

0x00070116 

(Sets the message format to compact)

EcoMode

0x0F

0x01

0x00 = Disable EcoMode 

0x01 = Enable EcoMode

0x000F0100 

(Disables EcoMode)

Set Time Relative

0x13

0x04

0xNumber of seconds* (lsByte -> msByte) 

*Negative numbers supported.

0x0013043C000000 

(Adds 60 seconds to the current time)

0x0013043C000080

(Subtracts 60 seconds from the current time)

UTC offset

0x17

0x02

0xNumber of minutes*

(lsByte -> msByte)

0x17023C00 

(Sets the UTC offset to +60 minutes)

*Negative numbers supported.

0x17023C80 

(Sets the UTC offset to -60 minutes)

Reboot

0x22

0x02

0x759E is used to reboot device (note endianness, LSB first).

0x0022029E75 

(Reboots the device)


Message formats

To allow a flexible output from the device, CMi4140 has several message formats.

Table 172. CMi4140 message formats

Message format name

Message ID

Scheduled

Introduced in FW

Standard

0x15

No

1.0.1

Compact

0x16

No

1.0.1

JSON

0x17

No

1.0.1

Scheduled Daily Redundant

0x18

Yes

1.0.1

Scheduled Extended

0x19

Yes

1.0.1

Combined heating/cooling

0x1A

Yes

1.0.1

Heat Intelligence

0x1B

Yes

1.0.1

Scheduled Extended+

Due to size limitations, this message format is divided in two messages.

0x3B telegram 1

0x3C telegram 2

Yes

1.0.3


Unscheduled message formats

Standard

Table 173. Payload, message format Standard [0x15]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x15 (Standard)

1

Heat energy E1 / Cooling energy E3

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Volume

6 bytes

INT32

Volume ( m³ )

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³

0416xxxxxxxx = xxxxxxxx  m³

0417xxxxxxxx = xxxxxxxx * 10  m³

3

Power

4 bytes

INT16

Power (W) 

022Bxxxx = xxxx W 

022Cxxxx = xxxx * 10 W

022Dxxxx = xxxx * 100 W

022Exxxx = xxxx kW

022Fxxxx = xxxx * 10 kW

4

Flow

4 bytes

INT16

Flow ( m³/h)

023Bxxxx = xxxx * 0.001  m³/h 

023Cxxxx = xxxx * 0.01  m³/h 

023Dxxxx = xxxx * 0.1  m³/h

023Exxxx = xxxx  m³/h

023Fxxxx = xxxx * 10  m³/h

5

Fw temp

4 bytes

INT16

Forward temperature (°C)

0258xxxx = xxxx * 0.001 °C 

0259xxxx = xxxx * 0.01 °C 

025Axxxx = xxxx * 0.1 °C 

025Bxxxx = xxxx °C

6

Rt temp

4 bytes

INT16

Return temperature (°C)

025Cxxxx = xxxx * 0.001 °C 

025Dxxxx = xxxx * 0.01 °C 

025Exxxx = xxxx * 0.1 °C 

025Fxxxx = xxxx °C

7

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

8

Info bits

7 bytes

INT32

Error and warning flags 

04FD17xxxxxxxx 

For further information about Info bits please refer to the meter’s manual


Compact

Table 174. Payload, message format Compact [0x16]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x16 (Compact)

1

Heat energy E1 / Cooling energy E3

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

3

Info bits

7 bytes

INT32

Error and warning flags 

04FD17xxxxxxxx 

For further information about Info bits please refer to the meter’s manual


JSON

For message format JSON, the data is presented in a plain text format.

The following table contains a description of all field included in the telegram.

Table 175. Fields, message format JSON [0x17]

Field

Description

Message format identifier

0x17 (Message format JSON)

Energy

Energy consumption

Unit

Unit of energy consumption (Wh, kWh, MWh, GWh, J, kJ, MJ, GJ, Cal, kCal, MCal or GCal)

Meter ID

Identification number of the meter in which the module is mounted.


See the following example of a telegram for message format JSON:

{"E":12345678,"U":"kWh","ID":87654321} 

Scheduled message formats

For message formats of type “Scheduled” (Scheduled – Daily redundant and Scheduled – Extended), two types of messages will be transmitted from the module - a clock message and a data message.

The difference between a clock message and a data message is described in the following table.

Table 176. Clock message and data message

Message

Time interval

Description

Clock message

Once per day

The clock message presents the current time of the meter. It can be used to verify that the clock is correct and has not drifted more than accepted.

Data message

Determined by Transmit interval parameter

The actual meter data collected from the meter.


The following table contains a detailed description of the payload of the clock message.

Table 177. Payload, clock message

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0xFA (=Clock message)

1

Data/Time

6 bytes

32 bit binary integer M-Bus type F

046Dxxxxxx = Valid date/time message

346Dxxxxxx = Invalid date/time message


The clock message will be transmitted once every day and the data message at least (regulated by transmit interval parameter or EcoMode) once every day. The transmit interval can only be set the values listed in Table 178, “Transmit interval options ”.

Although the meter readout will occur on top-of-the-hour, the data message will not necessarily be transmitted at that exact time. The LoRaWAN® transmission will occur after a random delay of 0-15 minutes to decrease the risk of collisions. The readout for the clock message occurs at a random hour (00:00- 23:00) at a random minute in the 35-45 interval and will be transmitted immediately after the readout.

Note

When using message format Scheduled, the transmit interval cannot not be set to higher than 1440 (24 hours).

Table 178. Transmit interval options 

Parameter

Values

Unit

Transmit interval

60, 120, 180, 240, 360, 480, 720, 1440

Minutes


Scheduled - Daily Redundant

The data message of Scheduled mode-daily redundant contains an accumulated daily energy field, which is updated at 24:00 each day. In other words, depending on transmit interval settings and data rate, the field will be included in between 1-24 telegrams per day. This will increase the probability of the value being received. For example, if the transmit interval is set to “2”, the accumulated energy read at 24:00 will be transmitted 12 times during the 24 next coming hours (every 2nd hour).

Table 179. Payload, message format Scheduled – daily redundant [0x18]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x18 (Scheduled-daily redundant)

1

Heat energy E1 / Cooling Energy E3

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Volume

6 bytes

INT32

Volume ( m³ ) 

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³ 

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³ 

0416xxxxxxxx = xxxxxxxx  m³

0417xxxxxxxx = xxxxxxxx * 10  m³

3

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

4

Info bits

7 bytes

INT32

Error and warning flags 

04FD17xxxxxxxx 

For further information about Info bits please refer to the meter’s manual

5

Meter date/time

6 bytes

INT32

Meter date and time (YY-MM-DD HH:MM) 

046Dxxxxxxxx 

Bit 31-28 = Year-high* 

Bit 27-24 = Month 

Bit 23-21 = Year-low* 

Bit 20-16 = Day 

Bit 15 = Summertime flag** 

Bit 12-8 = Hour 

Bit 7 = Error flag*** 

Bit 6 = Reserved for future use*** 

Bit 5-0 = Minute 

*The year is read by combining the year-high and year-low field. For example, year-high = 0010 and year-low = 010 => year = 0010010

**0 = standard time, 1= daylight-saving time 

***0 = timestamp is valid, 1 = timestamp is not valid

6

Accumulated heat / cooling energy at 24:00

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

4400xxxxxxxx = xxxxxxxx,xxx Wh 

4401xxxxxxxx = xxxxxxxx,xx Wh 

4402xxxxxxxx = xxxxxxxx,x Wh 

4403xxxxxxxx = xxxxxxxx Wh 

4404xxxxxxxx = xxxxxxxx *10 Wh 

4405xxxxxxxx = xxxxxxxx *100 Wh 

4406xxxxxxxx = xxxxxxxx kWh 

4407xxxxxxxx = xxxxxxxx * 10 kWh 

440Exxxxxxxx = xxxxxxxx MJ 

440Fxxxxxxxx = xxxxxxxx * 10 MJ 

44FB0Dxxxxxxxx = xxxxxxxx MCal

44FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

44FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

Note: Before a midnight reading has been performed the Function field of the DIF is set to “value during error state” to indicate that the value is not valid.


Scheduled - Extended

The data message of Scheduled mode-Extended contains all the data fields from message format Standard. In addition to these, it also includes the meter date/time to transmit messages on the full hour. As for all Scheduled message formats, the transmit interval can only be set to the values included in Table 127, “Transmit interval options ”

The following tables contains a detailed description of the payload of message format Scheduled - Extended.

Table 180. Payload, message format Scheduled - Extended [0x19]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x19 (Scheduled-Extended)

1

Heat energy E1 / Cooling Energy E3

6-7 bytes 

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Volume 

6 bytes

INT32

Volume ( m³ ) 

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³ 

0416xxxxxxxx = xxxxxxxx  m³ 

0417xxxxxxxx = xxxxxxxx * 10  m³

3

Power / Flow / Fw temp / Rt temp

12 bytes

INT64

Byte 0-2 = DIF/VIF codes, 0x07FFA0 

Byte 3 = VIFE defining scaling of Power/Flow 

-Bit 6.4 (n), 10n-3 W, n = 0..7 

-Bit 2..0 (m), 10m-3  m³/h, m = 0..7 

Byte 4-5 = Fw temp (lsByte -> msByte), °C, 2 decimals 

Byte 6-7 = Rt temp (lsByte -> msByte), °C, 2 decimals 

Byte 8-9 = Flow (lsByte -> msByte), 10m-6  m³/h 

Byte 10-11 = Power (lsByte -> msByte), 10n-3 W

4

Meter ID / Info bits

11 bytes

INT96

Byte 0-2 = DIF/VIF codes, 0x07FF21 

Byte 3-6 = Info bits (lsByte -> msByte) 

Byte 7-10 = Meter ID (lsByte -> msByte)* *Sent in binary format

5

Meter date/time

6 bytes

INT32

Meter date and time (YY-MM-DD HH:MM) 

046Dxxxxxxxx 

Bit 31-28 = Year-high* 

Bit 27-24 = Month 

Bit 23-21 = Year-low* 

Bit 20-16 = Day 

Bit 15 = Summertime flag** 

Bit 12-8 = Hour 

Bit 7 = Error flag*** 

Bit 6 = Reserved for future use*** 

Bit 5-0 = Minute 

*The year is read by combining the year-high and yearlow field. For example, year-high = 0010 and year-low = 010 => year = 0010010

**0 = standard time, 1= daylight-saving time 

***0 = timestamp is valid, 1 = timestamp is not valid


Combined heat/cooling

Note

Message format Combined heat/cooling is only meant to be used in combined heat/cooling meters.

Table 181. Payload, message format Combined heat/cooling [0x1A]

DIB

Field

Size

Data type 

Description

0

Message format identifier

1 byte

-

0x1A (Combined heat/cooling)

1

Heat energy E1

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Cooling Energy E3

8-9 bytes

INT32

Energy consumption (Wh, J, Cal) 

0483FF02xxxxxxxx = xxxxxxxx Wh 

0484FF02xxxxxxxx = xxxxxxxx * 10 Wh 

0485FF02xxxxxxxx = xxxxxxxx * 100 Wh 

0486FF02xxxxxxxx = xxxxxxxx kWh 

0487FF02xxxxxxxx = xxxxxxxx * 10 kWh 

048EFF02xxxxxxxx = xxxxxxxx MJ 

048FFF02xxxxxxxx = xxxxxxxx * 10 MJ 

04FB8DFF02xxxxxxxx = xxxxxxxx MCal 

04FB8EFF02xxxxxxxx = xxxxxxxx * 10 MCal 

04FB8FFF02xxxxxxxx = xxxxxxxx * 100 MCal

3

Volume

6 bytes

INT32

Volume ( m³ ) 

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³ 

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³

0416xxxxxxxx = xxxxxxxx  m³ 

0417xxxxxxxx = xxxxxxxx * 10  m³

4

Fw temp

 4 bytes

INT16

Forward temperature (°C) 

0258xxxx = xxxx * 0.001 °C 

0259xxxx = xxxx * 0.01 °C 

025Axxxx = xxxx * 0.1 °C 

025Bxxxx = xxxx °C

5

Rt temp

4 bytes

INT16

Return temperature (°C)

025Cxxxx = xxxx * 0.001 °C 

025Dxxxx = xxxx * 0.01 °C 

025Exxxx = xxxx * 0.1 °C 

025Fxxxx = xxxx °C

6

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

7

Info bits

7 bytes

Unit32

Error and warning flags

04FD17xxxxxxxx 

For further information about Info bits please refer to the meter’s manual


Heat intelligence

This telegram will be adapted to the type of meter in which the module is mounted. That means that it will look slightly different depending on whether the module is mounted in a heat meter, a cooling meter or a combined heat/cooling meter.

Table 182. Payload, message format Heat Intelligence [0x1B]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x1B (Heat intelligence)

1

Heat energy E1

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2*

Cooling energy E3

8-9 bytes

INT32

Energy consumption (Wh, J, Cal) 

0480 FF02xxxxxxxx = xxxxxxxx,xxx Wh 

0481 FF02xxxxxxxx = xxxxxxxx,xx Wh 

0482 FF02xxxxxxxx = xxxxxxxx,x Wh 

0483FF02xxxxxxxx = xxxxxxxx Wh 

0484FF02xxxxxxxx = xxxxxxxx * 10 Wh 

0485FF02xxxxxxxx = xxxxxxxx * 100 Wh 

0486FF02xxxxxxxx = xxxxxxxx kWh 

0487FF02xxxxxxxx = xxxxxxxx * 10 kWh 

048EFF02xxxxxxxx = xxxxxxxx MJ 

048FFF02xxxxxxxx = xxxxxxxx * 10 MJ 

04FB8DFF02xxxxxxxx = xxxxxxxx MCal 

04FB8EFF02xxxxxxxx = xxxxxxxx * 10 MCal 

04FB8FFF02xxxxxxxx = xxxxxxxx * 100 MCal

3

Volume

6 bytes

INT32

Volume ( m³ ) 

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³ 

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³ 

0416xxxxxxxx = xxxxxxxx  m³ 

0417xxxxxxxx = xxxxxxxx * 10  m³

4

Meter ID / Info bits

16 bytes

INT96

Byte 0-2 = DIF/VIF codes, 0x07FF21 

Byte 3-6 = Info bits (lsByte -> msByte) 

Byte 7-10 = Meter ID (lsByte -> msByte)* 

*Sent in binary format

5

Energy E8

7 bytes

INT32

Energy ( m³ * °C) 

04FF07xxxxxxxx = xxxxxxxx  m³ * °C

6

Energy E9

7 bytes

INT32

Energy ( m³ * °C) 

04FF08xxxxxxxx = xxxxxxxx  m³ * °C


Heat intelligence

The data message of message format Scheduled mode-extended + contains three tariffs and all the meter data included in the Standard telegram. In addition to these, a timestamp from the meter (meter date/time) is included in each telegram. It also is divided into two telegrams for keeping each telegram below 45 bytes.

Table 183. Telegram 1 - Payload, message format Scheduled – Extended + [0x3B]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x3B (Scheduled-Extended +, telegram 1)

1

Heat energy E1 / Cooling energy E3

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 

0400xxxxxxxx = xxxxxxxx,xxx Wh 

0401xxxxxxxx = xxxxxxxx,xx Wh 

0402xxxxxxxx = xxxxxxxx,x Wh 

0403xxxxxxxx = xxxxxxxx Wh 

0404xxxxxxxx = xxxxxxxx * 10 Wh 

0405xxxxxxxx = xxxxxxxx * 100 Wh 

0406xxxxxxxx = xxxxxxxx kWh 

0407xxxxxxxx = xxxxxxxx * 10 kWh 

040Exxxxxxxx = xxxxxxxx MJ 

040Fxxxxxxxx = xxxxxxxx * 10 MJ 

04FB0Dxxxxxxxx = xxxxxxxx MCal 

04FB0Exxxxxxxx = xxxxxxxx * 10 MCal 

04FB0Fxxxxxxxx = xxxxxxxx * 100 MCal

2

Energy Tariff 2

8

INT32

840203xxxxxxxx = xxxxxxxx Wh

3

Energy Tariff 3

8

INT32

840303xxxxxxxx = xxxxxxxx Wh

4

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

5

Meter date/time

6 bytes

INT32

Meter date and time (YY-MM-DD HH:MM) 

046Dxxxxxxxx 

Bit 31-28 = Year-high* 

Bit 27-24 = Month 

Bit 23-21 = Year-low* 

Bit 20-16 = Day 

Bit 15 = Summertime flag** 

Bit 12-8 = Hour 

Bit 7 = Error flag*** 

Bit 6 = Reserved for future use*** 

Bit 5-0 = Minute 

*The year is read by combining the year-high and year-low field. For example, year-high = 0010 and year-low = 010 => year = 0010010 

**0 = standard time, 1= daylight-saving time 

***0 = timestamp is valid, 1 = timestamp is not valid


*This DIB is only included in combined heat/cooling meters, i.e. not in pure heat meters or pure cooling meters. 

Table 184. Telegram 2 - Payload, message format Scheduled – Extended +

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x3C (Scheduled-Extended +)

1

Volume

6 bytes

INT32

Volume ( m³ ) 

0411xxxxxxxx = xxxxxxxx * 0.00001 m³ 

0412xxxxxxxx = xxxxxxxx * 0.0001 m³ 

0413xxxxxxxx = xxxxxxxx * 0.001  m³ 

0414xxxxxxxx = xxxxxxxx * 0.01  m³ 

0415xxxxxxxx = xxxxxxxx * 0.1  m³ 

0416xxxxxxxx = xxxxxxxx  m³ 

0417xxxxxxxx = xxxxxxxx * 10  m³

2

Power

4 bytes

INT16

Power (W) 

022Bxxxx = xxxx W 

022Cxxxx = xxxx * 10 W 

022Dxxxx = xxxx * 100 W 

022Exxxx = xxxx kW 

022Fxxxx = xxxx * 10 kW

3

Flow

4 bytes

INT16

Flow ( m³/h) 

023Bxxxx = xxxx * 0.001  m³/h 

023Cxxxx = xxxx * 0.01  m³/h 

023Dxxxx = xxxx * 0.1  m³/h 

023Exxxx = xxxx  m³/h 

023Fxxxx = xxxx * 10  m³/h

4

Fw temp

4 bytes

INT16

Forward temperature (°C)

0258xxxx = xxxx * 0.001 °C 

0259xxxx = xxxx * 0.01 °C 

025Axxxx = xxxx * 0.1 °C 

025Bxxxx = xxxx °C

5

Rt temp

4 bytes

INT16

Return temperature (°C) 

025Cxxxx = xxxx * 0.001 °C 

025Dxxxx = xxxx * 0.01 °C 

025Exxxx = xxxx * 0.1 °C 

025Fxxxx = xxxx °C

6

Meter ID

6 bytes

According to M-Bus EN13757-3 identification field

Meter ID 

0C78xxxxxxxx

7

Meter date/time

6 bytes

INT32

Meter date and time (YY-MM-DD HH:MM) 

046Dxxxxxxxx 

Bit 31-28 = Year-high* 

Bit 27-24 = Month 

Bit 23-21 = Year-low* 

Bit 20-16 = Day 

Bit 15 = Summertime flag** 

Bit 12-8 = Hour 

Bit 7 = Error flag*** 

Bit 6 = Reserved for future use*** 

Bit 5-0 = Minute 

*The year is read by combining the year-high and year-low field. For example, year-high = 0010 and year-low = 010 => year = 0010010 

**0 = standard time, 1= daylight-saving time 

***0 = timestamp is valid, 1 = timestamp is not valid

8

Info bits

7 bytes

INT32

Error and warning flags 

04FD17xxxxxxxx 

For further information about Info bits please refer to the meter’s manual


Was this article helpful?

0 out of 0 found this helpful
Have more questions? Submit a request

Comments (0 comments)

Article is closed for comments.