Configuration options

Elvaco OTC app configuration options

Table 199. 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.

0x1E (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 Time Relative

Adjusts the time of the meter relative to the current time.

N/A

N/A

N/A

Writeable

Set absolute time

Sets the time of the meter. When synchronizing the time via the Elvaco OTC App, the date, time and UTC offset settings of the phone will be applied to the meter.

N/A

Writeable

N/A

N/A

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 03 00 00 01 (internal antenna version)

0x 94 19 3A 03 04 00 00 01 (external antenna version)

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 200. 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

0x1E = Message format Standard

0x1F = Message format Compact

0x20 = Message format JSON

0x21 = Message format Scheduled-daily redundant

0x22 = Message format Scheduled - Extended

0x23 = Message format Combined heat/cooling

0x00070101F

(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)

*Negative numbers supported.

0x17023C00

(Sets the UTC offset to +60 minutes)

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

CMi4160 has several different message formats.

Table 201. CMi4160 message formats

Field

Size

Description

Message format identifier

1 byte

0x1E = Standard

0x1F = Compact

0x20 = JSON

0x21 = Scheduled – Daily redundant

0x22 = Scheduled – Extended

0x23 = Combined heat/cooling

0x3D = Scheduled Extended+ telegram 1*

0x3E = Scheduled Extended+ telegram 2*

* Only from FW 1.0.5


*Scheduled Extended+telegram 2 cannot be selected as a telegram type. It is the ID of the second telegram when using message format Scheduled Extended+.

Unscheduled message formats

Standard

Table 202. Payload, message format standard [0x1E]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x1E (Standard)

1

Energy

6-7 bytes

INT32

Energy consumption (Wh, J, Cal) 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)

0413xxxxxxxx = xxxxxxxx * 0.001 m3

0414xxxxxxxx = xxxxxxxx * 0.01 m3

0415xxxxxxxx = xxxxxxxx * 0.1 m3

3

Power

4 bytes

INT16

Power (kW)

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

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 address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID (BCD8, lsByte -> msByte)

Byte 6-7 = Meter manufacturer (lsByte -> msByte)

Byte 8 = Meter version

Byte 9 = Device type

8

Error flags

4 bytes

INT8

Error and warning flags

01FD17xx

For further information about Alarm codes please refer to the meter’s manual


Compact

Table 203. Payload, message format Compact [0x1F]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x1F (Compact)

1

Energy

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

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 address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID (BCD8, lsByte -> msByte)

Byte 6-7 = Meter manufacturer (lsByte -> msByte)

Byte 8 = Meter version

Byte 9 = Device type

3

Error flags

4 bytes

INT8

Error and warning flags

01FD17xx

For further information about Error flags please refer to the meter’s manual


JSON

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

Table 204. Fields, message format JSON [0x20]

Field

Description

Message format identifier

20 (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.


Below shows an example of a telegram sent using the JSON message format.

{"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 205. 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 206. 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 207, “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 207. 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).

The following table contains a detailed description of the payload of message format Scheduled - Daily redundant

Table 208. Payload, message format Scheduled – Daily redundant [0x21]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x21 (Scheduled-daily redundant)

1

Energy

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

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)

0413xxxxxxxx = xxxxxxxx * 0.001 m3

0414xxxxxxxx = xxxxxxxx * 0.01 m3

0415xxxxxxxx = xxxxxxxx * 0.1 m3

0416xxxxxxxx = xxxxxxxx m3

0417xxxxxxxx = xxxxxxxx * 10 m3

3

Meter address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID, BCD8

Byte 6-7 = Meter manufacturer

Byte 8 = Meter version

Byte 9 = Device type

4

Error flags

4 bytes

INT8

Error and warning flags

01FD17xx

For further information about Error flags 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 energy at 24:00

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

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 table contains a detailed description of the payload of message format Scheduled - Extended.

Table 209. Payload, message format Scheduled - Extended [0x22]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x22 (Scheduled-Extended)

1

Energy

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

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)

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 = Scaling of Power/Flow

-Bit 6.4 (n), 10n-3 W, n = 0..7

-Bit 2..0 (m), 10m-6 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 / Error flags

13 bytes

INT72

Byte 0-3 = DIF/VIF codes, 0x0DFF21E9

Byte 4 = Error flags

Byte 5-8 = Meter ID (BCD8, lsByte -> msByte)

Byte 9-10 = Meter manufacturer (lsByte -> msByte)

Byte 11 = Meter version

Byte 12 = Device type

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

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

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


Combined heat/cooling

Message format Combined heat/cooling is developed to be used in meters that measures both heating and cooling energy.

Note

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

The following table contains a detailed description of the payload of message format Combined heat/cooling.

Table 210. Payload, message format Combined heat/cooling [0x23]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x23 (Combined heat/cooling)

1

Heat energy

6-7 bytes

INT32

Energy consumption (Wh, J, Cal)

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

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)

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)

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)

025Exxxx = °C, 1 decimal

6

Meter address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID, BCD8

Byte 6-7 = Meter manufacturer

Byte 8 = Meter version

Byte 9 = Device type

7

Error flags

4 bytes

INT8

Error and warning flags

01FD17xx

For further information about Error flags please refer to the meter’s manual


Scheduled - Extended+

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.

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

Table 211. Payload Scheduled Extended, telegram 1 [0x3D]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x3D (Scheduled Extended+ telegram 1)

1

Energy

7 bytes

INT32

Energy consumption (Wh, J, Cal)

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 1

8 bytes

INT32

Energy Tariff 1

Same encoding as heat energy, e.g.,

841003xxxxxxxx = xxxxxxxx Wh

3

Energy Tariff 2

8 bytes

INT32

Energy Tariff 2

Same encoding as heat energy, e.g.,

842003xxxxxxxx = xxxxxxxx Wh

4

Meter address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID, BCD8

Byte 6-7 = Meter manufacturer

Byte 8 = Meter version

Byte 9 = Device type

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

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

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


Table 212. Payload Scheduled Extended, telegram 2 [0x3E]

DIB

Field

Size

Data type

Description

0

Message format identifier

1 byte

-

0x3E (Scheduled Extended+ telegram 2)

1

Volume

6 bytes

INT32

Volume (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 (kW)

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 address

10 bytes

According to M-Bus EN13757-3 identification field

Meter address

Byte 0-1 = DIF/VIF code

Byte 2-5 = Meter ID, BCD8

Byte 6-7 = Meter manufacturer

Byte 8 = Meter version

Byte 9 = Device type

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

**0 = standard time, 1= daylight-saving time ***0 = timestamp is valid, 1 = timestamp is not valid

8

Error flags

4 bytes

INT8

Error and warning flags

01FD17xx

For further information about Error flags please refer to the meter’s manual


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