How to use the Mbus Scan

This article explains how to use the Mbus Scan.

The Mbus bus is a serial bus powered by the master (Tower or Bridge) with 37V, the Tower/Bridge can handle natively 3.6mA (3*UL) on the bus.
If you want to scan/communicate with more than 3 devices, you should use an Mbus repeater.

Hardware installation

• Polarity is respected 
• Make sure that you have the Bus powered only by the Tower/Bridge (around 37V)
• All devices are on the same network configuration (baudrate/unique M-bus address/etc..)
• Wire are communication twisted pair 
• Make sure that your topology respect this one

Step 1 :

Go on the configuration tab and add a new equipment using the configuration Wizard.

Then select the "Scan M-bus network" button.

Select the baudrate of your M-bus network.

Step 2 :

Run a scan on primary address

-> You can choose to run the scan on primary address by using a "Full scan"

-> Or you can choose to run the scan between an address range

Run a scan on secondary address

Once the method is selected, click on the "launch the scan" button and wait for the scan to be finished.

The scan duration can take more than 6 minutes, depending on how many meter are on the bus and the baudrate.

Step 3 :

Select the datapoints you wish to monitor.

Please contact us if you need any additional information : Wattsense Support