Meter test


  1. Download and install the current release or beta version of the cFos Charging Manager.
  2. Make sure that your inverter or meter can be reached in the home network and that you know the IP address and port. For Modbus TCP you still need the slave ID.
  3. Open the website of the cFos Charging Manager in the browser by entering e.g. localhost: 4712. Then open the "System Configuration" page and activate Meter Test there. Enter, for example, SunSpec or SMA Inverter as the device type. As an address and ID that you can use to access your inverter or meter. Some devices require additional parameters that you should also set if necessary.

We would be very interested in what output the cFos Charging Manager delivers.

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 "SunSpec Solar Inverter" you can also try the following device types:

  • E3/DC Solar Device (Simple Mode)
  • SMA inverter
  • SMA home manager
  • Solar Log
  • Powerfox
  • Shelly 3EM
  • Sonnen... (various)

Then you can see if the cFos Charging Manager is compatible with your inverter.

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.