Installation

Mounting the module

Mount CMi6140 in a Kamstrup MC403, MC603, or MC803.

  1. Mount a SIM card (size: Nano) in the SIM card holder (5)

    CMi6140_parts_overview_.png

    SIM card mounting

  2. Grab the module by the outer edges.

  3. Gently press it into position in either module slot 1 or 2.

    CMi6140_mounting_.png

    Mounting the module in a Kamstrup meter

Note

Make sure to connect external antenna to the module MCX antenna connector.

Activating the module

Upon delivery, CMi6140 will be set to passive mode, which means that no messages will be transmitted from the module. Please make sure a SIM card (size: Nano) has been mounted before activating the module. There are two ways to activate the module:

By using the meter front buttons

  • On MULTICAL® 403: press and hold both buttons on the front of the meter until “CALL” is displayed.

  • On MULTICAL® 603 and MULTICAL® 803: Press down the two arrow buttons on the front of the meter until “CALL” is displayed.

By using the Elvaco OTC App

  1. Open Elvaco OTC app (downloadable via Google Play).

  2. Scan the module (make sure NFC is activated on the phone).

  3. Go to Apply mode.

  4. Set the power mode to “Active”.

  5. Place the phone next to the module. New settings are applied via NFC.

    To make sure that the module has joined the NB-IoT network correctly, check the “connection” field in the Inspect tab of the OTC App. The mobile phone should vibrate three times. This indicates that settings have successfully been applied.

Note

The NFC antenna of CMi6140 is best reached from backside of meter. This can result that the operator needs to dismantle the meter housing from the pie/wall mount to access the NFC antenna of CMi6140.

Read module status via meter display

In addition to the Elvaco OTC App, the status of the module can be read via the meter display.

To retrieve the status of the module via the meter display, enter the tech loop of the meter display and request the status information of the module. For detailed information, please refer to the Kamstrup MULTICAL Technical description.

See the following tables for information accessible in tech menu of the meter and how to interpret the status:

Table 24. Supported menus

Main-menu

Sub-menu

View ID

Name

Purpose

1

0

31

Module type

Show module type and config

1

1

70

Network status

Show the status of the network connection

1

2

71

Bootstrap status

Show the status of the LwM2M Bootstrap connection

1

3

72

DM status

Show the status of the LwM2M DM connection

1

4

73

MDM status

Show the status of the MDM connection

1

5

74

Network condition - RSRP

Show RSRP value for last transmission

1

6

75

Network condition - RSRQ

Show RSRQ value for last transmission

1

7

76

Network condition - ECL

Show ECL value for last transmission


Table 25. Module type

Digit

Meaning

Comment

0-2

Datagram description

Hardcoded to 100

3-4

System configuration

Hardcoded to 00

5-6

Module type

Hardcoded to the value 57

7

Not used, left blank


Table 26. Network status

Number

Meaning

0

Device is inactive, network is not used

1

Cannot read SIM

2

Attempting to register on the network

11111111

Successfully registered to the network


Table 27. Bootstrap status

Number

Meaning

0

Bootstrap not started

1

Bootstrapping

2

Bootstrap Failed

11111111

Device has bootstrapped


Table 28. DM Status

Number

Meaning

0

Device is inactive, network is not used

1

Device is configured to not use DM

11111111

Successfully registered to the DM server


Table 29. MDM Status

Number

Meaning

0

Device is inactive, network is not used

1

Device is configured to not use separate MDM connection

2

Attempting to register to MDM server

3

Failed to register due to issues with encryption or communication timeout

4

Registration denied

5

Setting up DTLS

6

Connecting to MDM Server, such as MQTT-SN Gateway

11111111

Last meter data transport successful


Example 3. RSPR Menu

The RSRP is shown as a signed floating point value.

Example: -112.7 → -112.7 dBm


Example 4. RSRQ Menu

The RSRQ is shown as a signed floating point value.

Example: -10.0 → -10.0 dB


Table 30. ECL Menu

Number

Meaning

0

ECL 0

1

ECL 1

2

ECL 2


Network connection

When activated, the module will attempt to connect to the mobile network. When the module succeeds in connecting to the mobile network, a meter readout will automatically be sent to the receiving system. The network status can be read through the Elvaco OTC app or the meter display. For more detailed information on how to read the module through the meter display, please refer to the Kamstrup MULTICAL Technical description.

If the module fails to join the mobile network, it will perform retries until it succeeds. The time between each attempt will increase for every attempt until it is performed once every day. A new join attempt cycle can be manually started anytime by deactivating and activating the module using the Elvaco OTC App.

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