axpert-monitor/lib/queries/QPIWS.js

Monitor Voltronic/Axpert inverter via USB

const _ = require("lodash");

const STATUS_FALSE = "OK";
const STATUS_WARN = "Warning";
const STATUS_FAULT = "Fault";
const STATUS_COMPILE = "compile";

const WARNING_BITS = {
  inverterFault: { offset: 1, status: STATUS_FAULT },
  busOver: { offset: 2, status: STATUS_FAULT },
  busUnder: { offset: 3, status: STATUS_FAULT },
  busSoftFail: { offset: 4, status: STATUS_FAULT },
  lineFail: { offset: 5, status: STATUS_WARN },
  opvShort: { offset: 6, status: STATUS_WARN },
  inverterVoltageLow: { offset: 7, status: STATUS_FAULT },
  inverterVoltageHigh: { offset: 8, status: STATUS_FAULT },
  overTemp: { offset: 9, status: STATUS_COMPILE },
  fanLocked: { offset: 10, status: STATUS_COMPILE },
  batteryVoltageHigh: { offset: 11, status: STATUS_COMPILE },
  batteryLowAlarm: { offset: 12, status: STATUS_WARN },
  batteryUnderShutdown: { offset: 14, status: STATUS_WARN },
  overLoad: { offset: 16, status: STATUS_COMPILE },
  eepromFault: { offset: 17, status: STATUS_WARN },
  inverterOverCurrent: { offset: 18, status: STATUS_FAULT },
  inverterSoftFail: { offset: 19, status: STATUS_FAULT },
  selfTestFail: { offset: 20, status: STATUS_FAULT },
  opDcVoltageOver: { offset: 21, status: STATUS_FAULT },
  batOpen: { offset: 22, status: STATUS_FAULT },
  currentSensorFail: { offset: 23, status: STATUS_FAULT },
  batteryShort: { offset: 24, status: STATUS_FAULT },
  powerLimit: { offset: 25, status: STATUS_WARN },
  pvVoltageHigh: { offset: 26, status: STATUS_WARN },
  mpptOverloadFault: { offset: 27, status: STATUS_WARN },
  mpptOverloadWarning: { offset: 28, status: STATUS_WARN },
  batteryTooLowToCharge: { offset: 29, status: STATUS_WARN },
};

function format(rawResponse) {
  const inverterFault = rawResponse[1] === "1";
  const result = {};

  _.forEach(WARNING_BITS, (property, name) => {
    const bitSet = rawResponse[property.offset] === "1";

    if (!bitSet) {
      result[name] = STATUS_FALSE;
      return;
    }

    if (property.status === STATUS_COMPILE) {
      result[name] = inverterFault ? STATUS_FAULT : STATUS_WARN;
    } else {
      result[name] = property.status;
    }
  });

  return result;
}

module.exports = format;