Meter test


  1. Unzip this ZIP file under Windows into a directory, e.g. c:\charging_manager.
    Make sure that existing subdirectories are also created and extracted
  2. Make sure that your inverter can be reached from Windows and that you know the IP address and port. For Modbus TCP you still need the slave ID.
  3. Open a command line window, change to the directory of the cFos Charging Manager, cd c:\charging_manager and enter the following:
    charging_manager.exe meter meter_sunspec <addr>:<port> <slave_id>
    As <addr> enter the IP address of the inverter, as <port> the port it listens on, as <slave_id> the Modbus TCP slave id,
    for example charging_manager.exe meter meter_sunspec 3.

We would be very interested to know what output the cFos Charging Manager provides.
Please let us know with an exact type designation of your inverter. We will then publish a list of compatible inverters.

By the way: Many additional devices, such as solar energy managers or storage units also work with the SunSpec, so they may also run with the cFos Charging Manager. You are also welcome to send us the output from such devices.

Instead of meter_sunspec you can also try the following device types:

  • meter_sma_inverter for SMA inverters
    so for example charging_manager.exe meter meter_sma_inverter 3.
  • meter_sunspec for E3/DC inverter (Sunspec model)
    so e.g. charging_manager.exe meter meter_sunspec 3 40000,1. This will let you skip the first Sunspec model and select the second one, as this devices may be built to include more than one meter.
  • meter_e3dc for E3/DC inverters in Simple Mode
    so e.g. charging_manager.exe meter meter_e3dc 3 40068.

Then you can see if the cFos Charging Manager is compatible with your inverter.
For certain devices, there are parameters that you should be aware of: List of parameters

Thank you for trying!
You are helping us and other owners of solar systems and energy storage devices.

Successfully tested inverters / meters


You can integrate these as a producer meter with the latest version of cFos Charging Manager without having to install an extra intermediate meter.

Thank you for testing to:
Adrian A.
Thomas B.
Jonas D.
Manuel G.
Jan H.
Max H.
Hendrik J.
Simon K.
Marco L.
Andreas M.
Guido S.
Klaus S.
Martin S.