fronius-meter.cpp

Demonstration of a SunSpec compatible Fronius electricity meter.

Connection in Modbus RTU serial mode.

#include <FroniusMeter.h>
#include <iomanip>
#include <iostream>
#include <memory>

int main(int argc, char *argv[]) {
  const std::string device =
      "/dev/serial/by-id/usb-FTDI_FT232R_USB_UART_AC009Y6C-if00-port0";

  std::unique_ptr<FroniusMeter> meter(new FroniusMeter());

  if (!meter->ConnectModbusRtu(device)) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }
  meter->SetModbusDebug(false);

  if (!meter->SetModbusAddress(240)) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }
  if (!meter->IsSunSpecMeter()) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }

  FroniusMeter::ModelType_t model;
  if (!meter->GetModelType(model)) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }
  std::cout << "SunSpec model: " << model.TypeStr << " (" << model.Type << ")"
            << std::endl;

  if (model.Type == 2) {
    std::cout << "Switching SunSpec model ..." << std::endl;
    if (!meter->SetModelType()) {
      std::cout << meter->GetErrorMessage() << std::endl;
      return EXIT_FAILURE;
    }
    if (!meter->GetModelType(model)) {
      std::cout << meter->GetErrorMessage() << std::endl;
      return EXIT_FAILURE;
    }
    std::cout << "SunSpec model: " << model.TypeStr << " (" << model.Type << ")"
              << std::endl;
  }

  std::ios::fmtflags old_settings = std::cout.flags();
  std::cout.setf(std::ios::fixed, std::ios::floatfield);

  double energy_export;
  if (!meter->GetAcEnergyExport(energy_export)) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }
  std::cout.precision(2);
  std::cout << "Energy exported: " << energy_export << " kWh" << std::endl;

  double energy_import;
  if (!meter->GetAcEnergyImport(energy_import)) {
    std::cout << meter->GetErrorMessage() << std::endl;
    return EXIT_FAILURE;
  }
  std::cout.precision(2);
  std::cout << "Energy imported: " << energy_import << " kWh" << std::endl;

  std::cout.flags(old_settings);
  return EXIT_SUCCESS;
}