When configuring a heat meter to work with a Guru Hub, upon the commissioning of the Hub a meter needs to have specific values set inside the commissioning app. The recommended settings are listed in the table below.

Please also note that whilst we try to ensure a broad range of compatibility, we cannot guarantee results of meters we have not tested, or meters which we have tested but where there may be a firmware version difference. If you do notice a firmware version difference then please get in touch.

In every case, please consult the manufacturer's documentation on how to connect the meter and in some cases configure the meter to support mbus fully.

To search for a meter name quickly, press Ctrl + F on your keyboard and type the name of the meter you're looking for.

Things to remember: If more than one meter exists on a Guru hub then the mbus addresses must not be the same on each meter. You will need to have the mbus addresses reconfigured for each of the meters 

Click on the name of the meter to see associated data sheets where they are available.


Mbus Heat Meters


Approved by Guru
Default Mbus address
Preferred Baud Rate
Minimum read interval on battery power **
Minimum read interval on mains power 
Danfoss Sonometer 1100
 Yes
 Old generation meters are mbus/0, new models are the last two digits of the serial number.
 2400
180 Seconds 5 seconds
Sharky Hydrometer 775 
 Yes
Old generation meters are mbus/1, new models are the last two digits of the serial number.
 2400
180 Seconds 5 seconds
Kamstrup 402 
 Yes
Last 2 digits of the serial number of the meter where the last 3 digits are less than 250 otherwise the last 3 digits.
 2400 or 9600
180 Seconds 5 seconds
Kamstrup 403
 Yes
Last 2 digits of the serial number of the meter where the last 3 digits are less than 250 otherwise the last 3 digits.
 2400 or 9600
180 Seconds 360 Seconds
Landis & Gyr UH 50 / T550 
 Yes
mbus/0
 2400
 900 Seconds - this is a firmware limitation that cannot be shortened by Guru
 900 Seconds - this is a firmware limitation that cannot be shortened by Guru
Landis & Gyr T230 / Ista Ultego Ultrasmart III 
 No*
 mbus/0 or last 2/3 digits
 2400
180 Seconds
 5 seconds
Itron CF Echo II 
 Yes
 mbus/0
 2400
180 Seconds
 5 seconds
Itron CF Ultramaxx V 
 Yes
 mbus/0
 2400
180 Seconds
 5 seconds
Zenner zelcius C5-IUF 
 Yes
 mbus/0
 2400
180 Seconds
 5 seconds
Sonoselect 10 
 Yes
 4th and 5th digits of the meter serial number
 2400
180 Seconds
 5 seconds
Kamstrup 602**/ 603
 Yes
Last 2 digits of the serial number of the meter where the last 3 digits are less than 250 otherwise the last 3 digits
 2400
180 Seconds
 5 seconds
Micronics U1000-HM
 Yes
 mbus/0
 2400
180 Seconds
 5 seconds
Sonometer 1000****
 Yes
mbus/0 or Loop 3 – 1 press is secondary address; 2 presses is primary address.
 2400
180 Seconds
 5 seconds
Sontex Superstatic 749
 Yes
 mbus/0
 2400
180 Seconds
 5 Seconds


Mbus Cooling Meters

Danfoss 1100 with cooling tariff 
 Yes
 Last 2 digits of the serial number with correct flags from the mbus frame.
 2400
 360 Seconds
 5 seconds
 Kamstrup 403 / 603 with cooling tariff
 Yes
 Last 2 digits of the serial number of the meter where the last 3 digits are less than 250 otherwise the last 3 digits, then include the correct mbus flags from the mbus frame. Power & Energy
 2400
 360 Seconds
 5 seconds

Mbus electricity meters

 Inepro PRO 1 -Mb
 Yes
 Last 2 digits of the serial number with correct flags from the mbus frame.
 2400
 360 Seconds
 5 seconds
 BMeters B21 113-100
 Yes
Mbus/0
 2400
 360 Seconds
 5 seconds
Eastron SDM230 M-Bus V2
 Yes
Mbus/1

(Please note only total kWh are displayed for meter and billing purposes)
 2400
 360 Seconds
 5 seconds


Pulse Meters

  • Most pulse meters are accepted by the hub, if however there is an abnormal length of pulse signal then this can cause misreads due to how the pulse is supposed to work.
  • In order to add a pulse meter, you will need to insert the pulse rate per unit after the pulse addressing. e.g. pulse/0/100 for 100 pulses per
  • A pulse signal length can be determined by holding a multimeter on its continuity setting and then attaching the wires from the meter and running consumption through the meter, this will give an audible noise when the pulse contact is made.


Caveats

*The Landis and Gyr T230 / Ista Ultego Smart III is not approved on Guru Top Units with a serial number lower than A0155600 at present due to comms with the meter being unreliable. 

** For battery-powered meters, please confirm the maximum polling frequency with your meter supplier to ensure battery life is not adversely affected. Setting this to 5 seconds will severely shorten battery life.

***If the return the temp becomes greater than the flow temp, the Kamstrup does not flag this up as negative consumption. It does however not add to the total consumption, but it does skew the instantaneous demand when viewing on the HES.

****Mbus register for power must be added to the meter to send it to the hub. If this is not done, there is no instantaneous demand given to the hub. Please seek correct documentation from the manufacturer.