Elvaco CMi4110 User Manual

CMi4110 User’s Manual English

CMi4110 User’s Manual English v1.3

page | 2 (27)

[2018-06]

V1.3

Contents

1 DOCUMENT NOTES ..................................................................................................... 3

1.1 COPYRIGHT AND TRADEMARK ......................................................................................... 3

1.2 CONTACTS ..................................................................................................................... 3

2 IMPORTANT USAGE AND SAFETY INFORMATION ................................................... 4

3 USING THIS MANUAL .................................................................................................. 5

3.1 PURPOSE AND AUDIENCE ............................................................................................... 5

3.2 ONLINE RESOURCES ...................................................................................................... 5

3.3 SYMBOLS ....................................................................................................................... 5

4 INTRODUCTION ............................................................................................................ 6

4.1 PURPOSE ....................................................................................................................... 6

4.2 APPLICATION DESCRIPTION ............................................................................................. 6

4.3 PRODUCT FEATURES ...................................................................................................... 6

4.4 COMPATIBILITY ............................................................................................................... 7

5 GETTING STARTED ...................................................................................................... 8

5.1 PURPOSE ....................................................................................................................... 8

5.2 PRODUCT SPECIFICATION ............................................................................................... 8

5.3 MOUNT AND START-UP THE DEVICE ................................................................................. 8

5.3.1 Mounting and connection ............................................................................................ 8

5.3.2 Connection of antenna ................................................................................................ 8

5.3.3 Start-up and LED indications....................................................................................... 9

5.3.4 Switch off/reboot module ........................................................................................... 10

6 ADMINISTRATION REFERENCE ................................................................................ 11

6.1 PURPOSE ..................................................................................................................... 11

6.2 SECURITY AND ACCESS CONTROL ................................................................................. 11

6.3 CONFIGURATION OPTIONS ............................................................................................ 11

6.4 ADAPTIVE DATA RATE (ADR) ........................................................................................ 12

6.5 TRANSMIT INTERVAL ..................................................................................................... 12

6.5.1 EcoMode ................................................................................................................... 12

6.6 MESSAGE FORMATS ..................................................................................................... 13

6.6.1 Message structure ..................................................................................................... 13

6.6.2 Structure and payload ............................................................................................... 14

6.7 DOWNLINK ................................................................................................................... 21

7 TECHNICAL SPECIFICATIONS .................................................................................. 23

8 TYPE APPROVALS ..................................................................................................... 25

9 DOCUMENT HISTORY ................................................................................................ 26

9.1 VERSIONS .................................................................................................................... 26

10 REFERENCES ................................................................ ............................................. 27

10.1 TERMS AND ABBREVIATIONS ......................................................................................... 27

10.2 NUMBER REPRESENTATION .......................................................................................... 27

CMi4110 User’s Manual English v1.3

page | 3 (27)

[2018-06]

V1.3

1 Document notes

All information in this manual, including product data, diagrams, charts, etc. represents information on products at the time of publication, and is subject to change without prior notice due to product improvements or other reasons. It is recommended that customers contact Elvaco AB for the latest product information before purchasing a CMi Series product.

The documentation and product are provided on an “as is” basis only and may contain deficiencies or

inadequacies. Elvaco AB takes no responsibility for damages, liabilities or other losses by using this product.

1.1 Copyright and trademark

CMi Series is a trademark of Elvaco AB, Sweden.

1.2 Contacts

Elvaco AB Headquarter Kabelgatan 2T 434 37 Kungsbacka SWEDEN Phone: +46 300 30250 E-Mail: [email protected]

Elvaco AB Technical Support Phone: +46 300 434300 E-Mail: [email protected]

Online: http://www.elvaco.com

CMi4110 User’s Manual English v1.3

page | 4 (27)

[2018-06]

V1.3

2 Important usage and safety information

The following safety precautions must be observed during all phases of the operation, usage, service or repair of any CMi Series product. Users of the product are advised to convey the information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product. Failure to comply with these precautions violates safety standards of design, manufacture and intended

use of the product. Elvaco AB assumes no liability for customer’s failure to comply with these

precautions. CMi4110 receives and transmits radio frequency energy while switched on. Remember that interference

can occur if the product is used close to TV sets, radios, computers or inadequately shielded equipment. Follow any special regulations and always switch off the product wherever forbidden, or when you suspect that it may cause interference or danger.

CMi4110 User’s Manual English v1.3

page | 5 (27)

[2018-06]

V1.3

3 Using this manual

3.1 Purpose and audience

This manual provides all information needed to mount, deploy and configure CMi4110 (Landis+Gyr description: WZU-LoRa) and targets system integrators.

3.2 Online resources

To download the latest version of this user’s manual, or to find information in other languages, please

visit http://www.elvaco.com/.

3.3 Symbols

The following symbols are used throughout the manual to emphasize important information and useful tips:

The Note symbol is used to mark information that is important to take into consideration for safety reasons or to assure correct operation of the meter connectivity module.

The Tip symbol is used to mark information intended to help you get the most out of your product. It can for example be used to highlight a possible customization option related to the current section.

Table 1 provides information on how the product should be used.

Symbol

Description

Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Contact your Local Authority for recycling advise.

Electrostatic-sensitive device. Please observe the necessary ESD protective measures when installing the module.

Table 1: Usage information

CMi4110 User’s Manual English v1.3

page | 6 (27)

[2018-06]

V1.3

4 Introduction

4.1 Purpose

This chapter provides a general description of CMi4110. In the next-coming sections you will learn more about possible applications for the product and how CMi4110 can be combined with other products to build versatile solutions.

4.2 Application description

CMi4110 is a cost-effective LoRaWAN meter connectivity module, which is mounted in a Landis+Gyr UH50 meter or a UC50 calculator. It uses a very energy-efficient scheme to deliver meter data to a receiving (application) server over a LoRaWAN network. Meter data is securely transmitted, using LoRaWAN end-to-end security scheme.

CMi4110 can both be retrofitted into deployed meters or mounted before deployment.

4.3 Product features

CMi4110 has the capability to offer a combination of battery operation with very long lifetime and a versatile application through its many configuration options. Key features of the module include:

• Long battery lifetime The module’s EcoMode feature enables the module to achieve a battery-lifetime of at least 11+1 years.

• No meter installation needed As soon as the meter connectivity module has been mounted and started up, it will join the LoRaWAN network and start delivering meter data, i.e. no manual steps need to be taken in order to install the product in the meter.

• Quick commissioning The product uses Elvaco’s One-Touch Commissioning (OTC) solution to securely and quickly configure products deployed. Using Elvaco’s OTC App, simply enter your desired settings and place your phone on the right side of the L+G UH50 meter / UC50 calculator. New settings will be applied instantaneously via NFC.

• A unique and flexible message scheme

• Meter data aligned with meter’s internal clock and redundant daily energy values enables

coordinated high-precision readouts without network congestion and assures reliable delivery of daily energy consumption.

• Several message formats to choose between, including JSON, gives the right fit for the unique demands of each application.

CMi4110 User’s Manual English v1.3

page | 7 (27)

[2018-06]

V1.3

4.4 Compatibility

CMi4110 is compatible with all L+G UH50 meters using software version 5.15 or higher as well as with all L+G UC50 calculators using software version 8.06 or higher.

CMi4110 is supplied with power from the UH50/UC50 D cell battery. The module is also compatible with Elvaco’s 230V CMip2110 PSUs and with the following PSUs from Landis+Gyr: WZU-AC230, WZUAC110, WZU-ACDC24-00.

CMi4110 User’s Manual English v1.3

page | 8 (27)

[2018-06]

V1.3

5 Getting started

5.1 Purpose

This chapter provides instructions on how to get started with the CMi4110. After reading and carefully following each step of this chapter, your meter connectivity module will be mounted, connected and started up.

5.2 Product specification

5.3 Mount and start-up the device

5.3.1 Mounting and connection

CMi4110 is mounted in module slot 2 of a L+G UH50 heat meter or a L+G UC50 heat calculator.

5.3.2 Connection of antenna

If using CMi4110Ext, the SMA connector (6) is used to connect an external antenna. Please order your desired antenna (wall-mount or magnet-mount) from the Elvaco (or L+G) accessory assortment.

Make sure to mount the antenna at least 0.5 meters away from the meter in order not to disturb the meter and attached cables.

1. Meter interface

2. Push button

3. Green LED

4. Red LED

5. Tamper switch (optional)

6. External antenna connector (optional)

7. LoRa antenna

8. NFC antenna

CMi4110 User’s Manual English v1.3

page | 9 (27)

[2018-06]

V1.3

5.3.3 Start-up and LED indications

Module activation

Upon delivery, CMi4110 is set to passive mode, which means no messages will be transmitted from the module. There are two ways to activate the module:

1. Press down the push button (2) for at least 5 seconds until the green LED lights up, then release the button. A few seconds (1 to 11 seconds) later, CMi4110 will indicate start-up by flashing red and green LEDs for one second.

2. Via the Elvaco OTC app. Go to Apply mode, set the Module power to “active” and click Apply settings. Place the phone on the right side of the meter. The mobile phone should vibrate three times. This indicates that settings have successfully been applied.

Network join

After activation, CMi4110 will attempt to join the LoRaWAN network. The phase is indicated by short flashes every 5th second on the green LED. When CMi4110 succeeds in joining the LoRaWAN network, the green LED will lighten up for 8 seconds, as illustrated by Figure 1.

If the module fails to join the LoRaWAN network 6 times, it will wait for 60 minutes before another join attempt is initiated in order to conserve battery. A new join attempt cycle can be manually started anytime by pressing down the push button (2) for at least 5 seconds, until the green LED lights up, and then release the button.

When the module has joined the LoRaWAN network, meter data will initially be transmitted from the module every minute (regardless of transmit interval settings) in order to set the right data rate. After 10 minutes of calibration, the module will start to deliver meter data using its configured settings.

Figure 1: Network join LED indication

When activation-by-personalization (ABP) is used, the module does not perform a join operation before sending messages. Therefore, the 8-second indication of connection will

not appear in ABP mode.

Soft start

In rare cases, if the battery is weak, the module will perform a soft start to be able to start-up despite the condition of the battery. The soft start takes 10 minutes to complete. The red LED will blink shortly every 10th second until the start-up has completed.

Figure 2: Soft start LED indication

CMi4110 User’s Manual English v1.3

page | 10 (27)

[2018-06]

V1.3

5.3.4 Switch off/reboot module

To reboot the module, press and hold the push button (2) for 5-15 seconds. Release the button when the green LED is lit.

To switch off the module, press and hold the push button (2) for 15-20 seconds. Release the button when the red LED is lit.

Figure 3: Reboot/switch off module

CMi4110 User’s Manual English v1.3

page | 11 (27)

[2018-06]

V1.3

6 Administration reference

6.1 Purpose

This chapter contains detailed information about configuring options for CMi4110 and format of the different message types transmitted from the module.

6.2 Security and access control

CMi4110 has a configuration lock feature, which prevents unauthorized access to the module. When configuration lock has been enabled, a Product Access Key will be needed to access the device. For more information about security and access control for CMi4110, please refer to the One-touch commissioning (OTC) documentation, available on the Elvaco website.

6.3 Configuration options

CMi4110 is configured via the Elvaco OTC app. It uses NFC to transfer settings to the module. Downlink may also be used to for some applications, see section 6.7 Downlink for more information.

Please note that the Elvaco OTC app is only compatible with Android phones with Android

5.0 or later.

Table 2 provides a summary of all settings.

Field name (Abbr.)

Description

Default value

Device access

Locked device &

correct Product

Access Key

or

Open device

Device access

No

Product

Access

Key

Downlink

Meter ID

Meter identification number of the meter. Not configurable.

N/A

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.

0

(Compact)

Readable /

Writeable

Readable

N/A

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

Maximum daily transmissions

Maximum number of transmissions allowed per day.

Inactive

Readable /

Writeable

Readable

Writeable

Date & Time

Date and time set for the meter.

Current

date/time

Readable /

Writeable

Readable

Writeable

Set Time Relative

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

N/A

Writeable

N/A

Writeable

CMi4110 User’s Manual English v1.3

page | 12 (27)

[2018-06]

V1.3

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

N/A

Activation type

Sets the way the device joins the LoRaWAN network.

OTAA

Readable /

Writeable

Readable

N/A

Network join

Used to display whether the module has joined the LoRaWAN network.

N/A

Readable

N/A

Join EUI

Application ID that determines where data ends up.

0x 00 00 00 00 00

00 00 00

Readable /

Writeable

Readable

N/A

Application key

Encryption key for payload data (only applicable in OTAA mode).

Device-unique 128-bit number

Writeable

N/A

Application session key

Encryption key for payload data (only applicable in ABP mode).

Device-unique

128-bit number

Writeable

N/A

Device address

Unique address used by the device to identify itself on the LoRaWAN network (only applicable in ABP mode).

Device-unique 32-bit number

Writeable

N/A

Network session key

Encryption key for payload data (only applicable in ABP mode).

Device-unique

128-bit number

Writeable

N/A

Current data rate

The current data rate used for the module.

N/A

Readable

N/A

Table 2: Configuration options

6.4 Adaptive data rate (ADR)

ADR is part of the LoRaWAN standard where the network server determines the optimal rate of communication for the module based on current signal conditions. In best case, the module will use its highest data rate (DR5) in order to be as energy-efficient as possible. When signal conditions are poor, the network server will incrementally lower the data rate until it is able to receive the message. When the data rate is low, the energy consumption per telegram will increase.

6.5 Transmit interval

6.5.1 EcoMode

When EcoMode is active, a battery-lifetime of at least 11+1 years is guaranteed for the module. The module is able to achieve this by adapting its transmit interval to current signal conditions on the LoRaWAN network. In other words, when signal conditions are poor (and data rate is low), the module will send data less frequently in order to conserve battery-life. When signal conditions are decent, the module will be able to send data more frequently.

CMi4110 User’s Manual English v1.3

page | 13 (27)

[2018-06]

V1.3

Table 3 summarizes the transmit interval for different data rates.

Data rate

Transmit interval

DR0

60 minutes

DR1 - DR2

30 minutes

DR3 - DR5

15 minutes

Table 3: Data rate and transmit interval

Set the transmit interval manually

If the transmit interval needs to be set to a fixed value, EcoMode can be disabled. Use the Elvaco OTC App to configure the transmit interval.

If EcoMode has been disabled, guarantees about battery-life no longer apply, even if EcoMode is activated later on.

Set an upper limit for number of daily telegrams In some cases, it might be necessary to limit the number of daily telegrams that the module should be allowed to send. By using the MaxDTx parameter, such a limit can be easily set. For example, by setting MaxDTx to “24”, no more than 24 telegrams will be transmitted each day (regardless of the data rate). Table 4 provides a set of examples.

MaxDTx value

Maximum transmit interval

1

Once per day

24

Once per hour

48

Once per 30 minutes

96

Once per 15 minutes

Table 4: MaxDTx setting

To achieve a battery life time of 16+1 (storage) years, the MaxDTx parameter needs to be set to 9 or lower.

6.6 Message formats

CMi4110 has five different message formats: Standard, Compact, JSON, Scheduled-daily redundant and Scheduled-extended. Each message type will be described in detail in this section. All data messages

from the module will be transmitted on LoRa port 2.

6.6.1 Message structure

All message formats except for JSON are encoded according to M-Bus standard. Each telegram begins with one byte specifying the message format. Then follows a sequence of data information blocks (DIBs). The data and structure of the DIBs depends on the message type set. Each DIB contains a data information field (DIF), a value information field (VIF) and a data field (DATA), where the actual payload is stored. The structure is illustrated by Figure 4.

CMi4110 User’s Manual English v1.3

page | 14 (27)

[2018-06]

V1.3

Figure 4: CMi4110 M-Bus message structure

For message type JSON, the data is presented as plain text.

Field

Size

Description

Message type

1 byte

0 = Standard 1 = Compact 2 = JSON 3 = Scheduled – daily redundant 4 = Scheduled - extended

Table 5: Message type field

6.6.2 Structure and payload

In this section, a detailed description of each message format is provided.

6.6.2.1 Standard

Figure 5 illustrates the structure of the message type for message format Standard. For a detailed description of the data included in each field, see Table 6.

Figure 5: Structure, message format Standard

CMi4110 User’s Manual English v1.3

page | 15 (27)

[2018-06]

V1.3

DIB

Field

Size

Data type

Description

1

Energy

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Energy consumption (MWh, kWh, MJ, GJ) Mapped to OBIS 6.8 0C06xxxxxxxx = MWh, 3 decimals = kWh

0C07xxxxxxxx = MWh, 2 decimals 0CFB00xxxxxxxx = MWh, 1 decimal 0CFB01xxxxxxxx = MWh, 0 decimals 0C06xxxxxxxx = kWh 0C0Exxxxxxxx = GJ, 3 decimals 0C0Fxxxxxxxx = GJ, 2 decimals 0CFB08xxxxxxxx = GJ, 1 decimal 0CFB09xxxxxxxx = GJ, 0 decimals

2

Volume

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Volume (m3) Mapped to OBIS 6.26 0C14xxxxxxxx = m3, 2 decimals

0C15xxxxxxxx = m3, 1 decimal 0C16xxxxxxxx = m3, 0 decimals

3

Power

5 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Power (kW) Mapped to OBIS 6.4 0B2Bxxxxxx = kW, 3 decimals

0B2Cxxxxxx = kW, 2 decimals 0B2Dxxxxxx = kW, 1 decimal 0B2Exxxxxx = kW, 0 decimals

4

Flow

5 bytes (including DIF/VIF)

BCD6 M-Bus Type A

Flow (m3/h) Mapped to OBIS 6.27 0B3Bxxxxxx = m3/h, 3 decimals

0B3Cxxxxxx = m3/h, 2 decimals 0B3Dxxxxxx = m3/h, 1 decimal 0B3Exxxxxx = m3/h, 0 decimals

5

Fw temp

4 bytes (including DIF/VIF)

BCD4

Forward temperature (°C) Mapped to OBIS 6.29 0A5Axxxx = °C, 1 decimal

0A5Bxxxx = °C, 0 decimals

6

Rt temp

4 bytes (including DIF/VIF)

BCD4

Return temperature (°C) Mapped to OBIS 6.28 0A5Exxxx = °C, 1 decimal

0A5Fxxxx = °C, 0 decimals

7

Meter ID

6 bytes (including DIF/VIF)

According to MBus EN13757-3 identification field

Meter ID 0C78xxxxxxxx

CMi4110 User’s Manual English v1.3

page | 16 (27)

[2018-06]

V1.3

8

Error flags

5 bytes (including DIF/VIF)

Uint16 M-Bus Type C

Error and warning flags 02FD17xxxx

Table 6: DIB fields, message type standard

6.6.2.2 Compact

Figure 6 illustrates the structure for message format Compact. For a detailed description of the data included in each field, see Table 7.

Figure 6: DIB structure, message type compact

DIB

Field

Size

Data type

Description

1

Energy

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Energy consumption (MWh, kWh, MJ, GJ)

Mapped to OBIS 6.8 0C06xxxxxxxx = MWh, 3 decimals =kWh

0C07xxxxxxxx = MWh, 2 decimals 0CFB00xxxxxxxx = MWh, 1 decimal 0CFB01xxxxxxxx = MWh, 0 decimals 0C06xxxxxxxx = kWh 0C0Exxxxxxxx = GJ, 3 decimals 0C0Fxxxxxxxx = GJ, 2 decimals 0CFB08xxxxxxxx = GJ, 1 decimal 0CFB09xxxxxxxx = GJ, 0 decimals

2

Meter ID

6 bytes (including DIF/VIF)

According to M-Bus EN13757-3 identification field

Meter ID 0C78xxxxxxxx

3

Error flags

5 bytes (including DIF/VIF)

Uint16 M-Bus Type C

Error and warning flags 02FD17xxxx =Error and warning flags

Table 7: DIB fields, message type compact

JSON

For message format JSON, the data is presented in a plain text format. Table 8 provides a description of all fields included in the telegram.

Field

Description

Energy

Energy consumption

Unit

Unit of energy consumption

Meter ID

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

Table 8: Fields, message type JSON

In Figure 7 an example of a message type JSON telegram is presented.

Figure 7: JSON message example

CMi4110 User’s Manual English v1.3

page | 17 (27)

[2018-06]

V1.3

6.6.2.4 Scheduled mode

When using message format Scheduled, two types of messages will be transmitted from the module: a clock message and a data message. The difference between the two is described in Table 9. There are two types of scheduled mode message types: daily redundant and extended.

Message

Time interval

Description

Clock message

Once per day

The clock message presents the current time of UH50/UC50. It can be used to verify that the clock is correct and has not drifted more than accepted.

Byte 0 = 0xFA Byte 1 = DIF, 0x04 = valid, 0x34 =invalid Byte 2 = VIF, 0x6D Byte 3-6 = 32-bit date/time encoded as M-Bus format F

Data message

Determined by MaxDTx parameter.

The data message contains the fields listed in Table 11.

Table 9: Clock message and data message

The clock message will be transmitted once every day and the data message at least (regulated by MaxDTx parameter) once every day (on LoRa port 3). Figure 8 illustrates the principle. Note that although the meter readout will occur on top-of-the-hour, the data message will not necessarily be transmitted at that exact time. The LoRa transmission will occur after a random delay of 1-30 minutes. The meter readout for the clock message occurs at a random hour (00:00-23:00) at a random minute in the 35-45 interval. The clock message will be transmitted immediately after readout.

When using message type Scheduled, the MaxDTx cannot not be set higher than 24.

The transmit interval of the data message is adapted to current data rate and MaxDTx settings. Note that for message type Scheduled, the MaxDTx parameter can only assume the values listed in Table 10.

Parameter

Values

MaxDTx

1, 2, 3, 4, 6, 8, 12, 24

Table 10: MaxDTx values for message type scheduled

CMi4110 User’s Manual English v1.3

page | 18 (27)

[2018-06]

V1.3

Scheduled- daily redundant

The data message of message format Scheduled mode-daily redundant contains an accumulated daily energy field, which is updated at 24:00 each day. Depending on MaxDTx settings and data rate, the field will be included in between 1-24 data messages per day. This will increase the probability of the value being received. For example, if MaxDTx is set to “12”, the accumulated energy read at 24:00 will be transmitted 12 times during the 24 next coming hours.

Figure 9: DIB structure, message type scheduled – daily redundant

DIB

Field

Size

Data type

Description

1

Energy

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Energy consumption (MWh, kWh, MJ, GJ)

Mapped to OBIS 6.8 0C06xxxxxxxx = MWh, 3 decimals = kWh

0C07xxxxxxxx = MWh, 2 decimals 0CFB00xxxxxxxx = MWh, 1 decimal 0CFB01xxxxxxxx = MWh, 0 decimals 0C0Exxxxxxxx = GJ, 3 decimals 0C0Fxxxxxxxx = GJ, 2 decimals 0CFB08xxxxxxxx = GJ, 1 decimal 0CFB09xxxxxxxx = GJ, 0 decimals

2

Meter ID

6 bytes (including DIF/VIF)

According to M-Bus EN13757-3 identification field

Meter ID 0C78xxxxxxxx

Figure 8: Data messages and MaxDTx settings

CMi4110 User’s Manual English v1.3

page | 19 (27)

[2018-06]

V1.3

3

Meter date/time

6 bytes (including DIF/VIF)

M-Bus Type F

Meter date and time (YY-MM-DD HH:MM) Mapped to OBIS 9.36 046Dxxxxxxxx Bit 31-28 = Year-high*

Bit 27-24 = Month Bit 23-21 = Year-low* Bit 20-16 = Day Bit 15 = Summer time flag** Bit 14-13 = Century 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 yearhigh 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

4

Accumulated energy at 24:00

6 Bytes (including DIF/VIF)

BCD8 M-Bus Type A

Energy consumption (MWh, kWh, MJ, GJ)

Mapped to OBIS 6.8 4C06xxxxxxxx = MWh, 3 decimals = kWh

4C07xxxxxxxx = MWh, 2 decimals 4CFB00xxxxxxxx = MWh, 1 decimal 4CFB01xxxxxxxx = MWh, 0 decimals 4C0Exxxxxxxx = GJ, 3 decimals 4C0Fxxxxxxxx = GJ, 2 decimals 4CFB08xxxxxxxx = GJ, 1 decimal 4CFB09xxxxxxxx = GJ, 0 decimals

4

Error flags

5 bytes (including DIF/VIF)

Uint16 M-Bus Type C

Error and warning flags 02FD17xxxx =Error and warning flags

Table 11: DIB fields, message type scheduled – daily redundant

Scheduled-extended

The data message of message format Scheduled mode-extended contains 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.

CMi4110 User’s Manual English v1.3

page | 20 (27)

[2018-06]

V1.3

DIB

Field

Size

Data type

Description

1

Energy

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Energy consumption (MWh, kWh, MJ, GJ) Mapped to OBIS 6.8 0C06xxxxxxxx = MWh, 3 decimals = kWh

0C07xxxxxxxx = MWh, 2 decimals 0CFB00xxxxxxxx = MWh, 1 decimal 0CFB01xxxxxxxx = MWh, 0 decimals 0C0Exxxxxxxx = GJ, 3 decimals 0C0Fxxxxxxxx = GJ, 2 decimals 0CFB08xxxxxxxx = GJ, 1 decimal 0CFB09xxxxxxxx = GJ, 0 decimals

2

Volume

6 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Volume (m3) Mapped to OBIS 6.26 0C14xxxxxxxx = m3, 2 decimals

0C15xxxxxxxx = m3, 1 decimal 0C16xxxxxxxx = m3, 0 decimals

3

Power

5 bytes (including DIF/VIF)

BCD8 M-Bus Type A

Power (kW) Mapped to OBIS 6.4 0B2Bxxxxxx = kW, 3 decimals

0B2Cxxxxxx = kW, 2 decimals 0B2Dxxxxxx = kW, 1 decimal 0B2Exxxxxx = kW, 0 decimals

If first byte is set to “3B” instead of “0B”, this indicates (value during error state)

4

Flow

5 bytes (including DIF/VIF)

BCD6 M-Bus Type A

Flow (m3/h) Mapped to OBIS 6.27 0B3Bxxxxxx = m3/h, 3 decimals

0B3Cxxxxxx = m3/h, 2 decimals 0B3Dxxxxxx = m3/h, 1 decimal 0B3Exxxxxx = m3/h, 0 decimals

5

Fw temp

4 bytes (including DIF/VIF)

BCD4

Forward temperature (°C) Mapped to OBIS 6.29 0A5Axxxx = °C, 1 decimal

0A5Bxxxx = °C, 0 decimals

6

Rt temp

4 bytes (including DIF/VIF)

BCD4

Return temperature (°C) Mapped to OBIS 6.28 0A5Exxxx = °C, 1 decimal

0A5Fxxxx = °C, 0 decimals

CMi4110 User’s Manual English v1.3

page | 21 (27)

[2018-06]

V1.3

7

Meter ID

6 bytes (including DIF/VIF)

According to MBus EN13757-3 identification field

Meter ID 0C78xxxxxxxx = Meter ID

8

Meter date/time

6 bytes (including DIF/VIF

M-Bus Type F

Meter date and time (YY-MM-DD HH:MM) Mapped to OBIS 9.36 046Dxxxxxxxx Bit 31-28 = Year-high*

Bit 27-24 = Month Bit 23-21 = Year-low* Bit 20-16 = Day Bit 15 = Summer time flag** Bit 14-13 = Century 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

9

Error flags

5 bytes (including DIF/VIF)

Uint16 M-Bus Type C

Error and warning flags 02FD17xxxx

Meter communication error message

When CMi4110 is unable to communicate with UH50/UC50, an error message will be transmitted on the LoRaWAN network. Table 12 describes that error message for each message type.

Message type

Error message

Standard

0E00

Compact

0E00

JSON

{ }

Scheduled-daily redundant

0E00

Table 12: Meter communication error message

6.7 Downlink

CMi4110 supports configuration via downlink, i.e. sending commands to an end-device via the LoRaWAN network. Note that this feature should only be used sparingly due to bandwidth consideration. Communication via downlink can only be made in a short window after an uplink transmission from module to server. Therefore, time-critical communication should not be performed over downlink.

Some appropriate use of downlink commands is:

• Adjusting the meter clock when message type scheduled is used.

• Adjusting the MaxDTx parameter in order to optimize the performance of CMi4110 on the

CMi4110 User’s Manual English v1.3

page | 22 (27)

[2018-06]

V1.3

LoRaWAN network.

Downlink are sent on port 2, structured according to the following format: “0x00” "TLV" "Number of bytes in configuration" "Configuration". For a complete description of all available downlink commands, see Table 13.

Field name

TLV (Type Length Value)

Number of bytes in configuration

Configuration

Configuration lock

0x05

0x01

0x00 = Locked 0x01 = Open

Transmit interval (only applies when EcoMode is inactive)

0x06

0x02

0xNumber of minutes (lsByte -> msByte)

Message format

0x07

0x01

0x00 = Message format Standard 0x01 = Message format Compact 0x02 = Message format JSON 0x03 = Message format Scheduled-daily

redundant

0x04 = Message format Scheduled-extended

Date & Time

0x11

0x02

0xHHMM

Set Date

0x12

0x03

0xYYMMDD

Set Time Relative

0x13

0x02

0xNumber of minutes*

*Negative numbers supported.

EcoMode

0x0F

0x01

0x00 = Disable EcoMode

0x01 = Enable EcoMode

Maximum daily transmissions

0x21

0x01

0xNumber of transmissions

Table 13: Downlink commands

Example: To set the MaxDTx parameter to 24, the following command would be sent by downlink: 0x00 21 01 18

CMi4110 User’s Manual English v1.3

page | 23 (27)

[2018-06]

V1.3

7 Technical specifications

Type

Value

Unit

Comments

Mechanics

Protection class

IP54

-

Dimensions (w x h x d)

80 x 38 x 23

mm

Weight

35 g

Mounting

In Landis+Gyr UH50/UC50 module slot 2

External antenna connector

SMA female

-

Electrical connections

Supply voltage

Internal meter battery or PSU

-

PSU options: Elvaco CMip2110 230V, Landis+Gyr WZU-AC230-xx or WZUACDC24-00

Electrical characteristics

Nominal voltage

3.0 - 5.0

VDC

Power consumption (max)

40

mA

Power consumption (sleep mode)

2.2

µA

Environmental specifications

Operating temperature

5 - 55

ºC

Operating humidity

0 - 93

% RH

No condensation

Operating altitude

2000

m

Pollution degree

Degree 1

-

Usage environment

Indoors

-

Storage temperature

-20 - 60

ºC

Radio characteristics

Frequency

868

MHz

Output power

14

dBm

Receiver sensitivity

-135

dBm

LoRaWAN characteristics

Device class

Class A

-

Bi-directional

LoRa version

1.0 -

Activation

OTAA or ABP

-

Data rate

DR0 - DR5

-

250 – 5470 bit/s

User interface

Green LED

Status

-

Red LED

Error

-

Push button

Start-up / reboot / switch off module

-

CMi4110 User’s Manual English v1.3

page | 24 (27)

[2018-06]

V1.3

Configuration

NFC via Elvaco OTC app or downlink data

-

CMi4110 User’s Manual English v1.3

page | 25 (27)

[2018-06]

V1.3

8 Type approvals

CMi4110 is designed to comply with the directives and standards listed below.

Approval

Description

EMC

EN 301 489-1, EN 301 489-3

CMi4110 User’s Manual English v1.3

page | 26 (27)

[2018-06]

V1.3

9 Document history

9.1 Versions

Version

Date

Description

Author

v1.0

2018-07

Initial version

Anton Larsson

v1.1

2018-10

Information about Scheduled – extended added

Anton Larsson

v1.2

2019-03

Corrected DIF/VIF for energy DIB

Anton Larsson

v1.3

2019-04

Added information about EcoMode

Anton Larsson

CMi4110 User’s Manual English v1.3

page | 27 (27)

[2018-06]

V1.3

10 References

10.1 Terms and abbreviations

Abbreviation

Description

DIB

Data Information Block

DIF

Data Information Field

VIF

Value Information Field

MCM

Meter Connectivity Module

10.2 Number representation

• Decimal numbers are represented as normal number, i.e. 10 (ten).

• Hexadecimal numbers are represented with prefix 0x, i.e. 0x0A (ten)

• Binary numbers are represented with prefix 0b, i.e. 0b00001010 (ten)