More energy meters on a single Modbus RTU bus

Steps for configuring energy meters

1. Unbind the bus terminal

   • Go to Settings → Hardware → TapHome Bus.
   • Unbind the bus terminal to which the energy meters are connected.

2. Add new interface

   • Go to Settings → Hardware → Add new interface → Modbus RTU.
   • Go to Add from template , locate your energy meter and select Add .

3. Assign the terminal

   • Open the meter details.
   • At the top, go to Terminals and assign Bus1, Bus2 or Bus3.

4. Connect the meters one by one

   • Do not connect all meters at once; start with the first meter.

5. For the first meter, assign a high Slave ID

   • Avoid setting the Slave ID to 1 (the default value from the factory).
   • Example: If you have 5 meters, set the Slave ID of the first meter to 5.

6. Adjust the Slave ID in the service settings

   • Click on Service settings .
   • Scroll down and click on Slave ID (the service action “Slave ID”, not the module communication setting).
   • Assign the value 5 (if you are configuring 5 meters).
   • Save Service settings .

7. Connect the second meter

   • Now connect the second meter to the same bus as the first meter.
   • Repeat the same sequence:
     • Set a higher Slave ID
     • Go to Service settings
     • Scroll down
     • Click on Slave ID
     • Assign the value 4 (if this is the second of 5 meters).

8. Repeat for the remaining meters

   • Continue configuring each meter one by one, following the same procedure.