src/charging-station/ocpp/1.6/OCPP16RequestService.ts

   1 // Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
   2
   3 import { ACElectricUtils, DCElectricUtils } from '../../../utils/ElectricUtils';
   4 import { AuthorizeRequest, OCPP16AuthorizeResponse, OCPP16StartTransactionResponse, OCPP16StopTransactionReason, OCPP16StopTransactionResponse, StartTransactionRequest, StopTransactionRequest } from '../../../types/ocpp/1.6/Transaction';
   5 import { CurrentType, Voltage } from '../../../types/ChargingStationTemplate';
   6 import { DiagnosticsStatusNotificationRequest, HeartbeatRequest, OCPP16BootNotificationRequest, OCPP16IncomingRequestCommand, OCPP16RequestCommand, StatusNotificationRequest } from '../../../types/ocpp/1.6/Requests';
   7 import { MeterValueUnit, MeterValuesRequest, OCPP16MeterValue, OCPP16MeterValueMeasurand, OCPP16MeterValuePhase } from '../../../types/ocpp/1.6/MeterValues';
   8
   9 import Constants from '../../../utils/Constants';
  10 import { ErrorType } from '../../../types/ocpp/ErrorType';
  11 import MeasurandPerPhaseSampledValueTemplates from '../../../types/MeasurandPerPhaseSampledValueTemplates';
  12 import MeasurandValues from '../../../types/MeasurandValues';
  13 import { MessageType } from '../../../types/ocpp/MessageType';
  14 import { OCPP16BootNotificationResponse } from '../../../types/ocpp/1.6/Responses';
  15 import { OCPP16ChargePointErrorCode } from '../../../types/ocpp/1.6/ChargePointErrorCode';
  16 import { OCPP16ChargePointStatus } from '../../../types/ocpp/1.6/ChargePointStatus';
  17 import { OCPP16DiagnosticsStatus } from '../../../types/ocpp/1.6/DiagnosticsStatus';
  18 import { OCPP16ServiceUtils } from './OCPP16ServiceUtils';
  19 import OCPPError from '../OCPPError';
  20 import OCPPRequestService from '../OCPPRequestService';
  21 import { RequestCommand } from '../../../types/ocpp/Requests';
  22 import Utils from '../../../utils/Utils';
  23 import logger from '../../../utils/Logger';
  24
  25 export default class OCPP16RequestService extends OCPPRequestService {
  26   public async sendHeartbeat(): Promise<void> {
  27     try {
  28       const payload: HeartbeatRequest = {};
  29       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.HEARTBEAT);
  30     } catch (error) {
  31       this.handleRequestError(OCPP16RequestCommand.HEARTBEAT, error);
  32     }
  33   }
  34
  35   public async sendBootNotification(chargePointModel: string, chargePointVendor: string, chargeBoxSerialNumber?: string, firmwareVersion?: string,
  36       chargePointSerialNumber?: string, iccid?: string, imsi?: string, meterSerialNumber?: string, meterType?: string): Promise<OCPP16BootNotificationResponse> {
  37     try {
  38       const payload: OCPP16BootNotificationRequest = {
  39         chargePointModel,
  40         chargePointVendor,
  41         ...!Utils.isUndefined(chargeBoxSerialNumber) && { chargeBoxSerialNumber },
  42         ...!Utils.isUndefined(chargePointSerialNumber) && { chargePointSerialNumber },
  43         ...!Utils.isUndefined(firmwareVersion) && { firmwareVersion },
  44         ...!Utils.isUndefined(iccid) && { iccid },
  45         ...!Utils.isUndefined(imsi) && { imsi },
  46         ...!Utils.isUndefined(meterSerialNumber) && { meterSerialNumber },
  47         ...!Utils.isUndefined(meterType) && { meterType }
  48       };
  49       return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.BOOT_NOTIFICATION, true) as OCPP16BootNotificationResponse;
  50     } catch (error) {
  51       this.handleRequestError(OCPP16RequestCommand.BOOT_NOTIFICATION, error);
  52     }
  53   }
  54
  55   public async sendStatusNotification(connectorId: number, status: OCPP16ChargePointStatus,
  56       errorCode: OCPP16ChargePointErrorCode = OCPP16ChargePointErrorCode.NO_ERROR): Promise<void> {
  57     try {
  58       const payload: StatusNotificationRequest = {
  59         connectorId,
  60         errorCode,
  61         status,
  62       };
  63       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.STATUS_NOTIFICATION);
  64     } catch (error) {
  65       this.handleRequestError(OCPP16RequestCommand.STATUS_NOTIFICATION, error);
  66     }
  67   }
  68
  69   public async sendAuthorize(connectorId: number, idTag?: string): Promise<OCPP16AuthorizeResponse> {
  70     try {
  71       const payload: AuthorizeRequest = {
  72         ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_IDTAG },
  73       };
  74       this.chargingStation.getConnector(connectorId).authorizeIdTag = idTag;
  75       return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.AUTHORIZE) as OCPP16AuthorizeResponse;
  76     } catch (error) {
  77       this.handleRequestError(OCPP16RequestCommand.AUTHORIZE, error);
  78     }
  79   }
  80
  81   public async sendStartTransaction(connectorId: number, idTag?: string): Promise<OCPP16StartTransactionResponse> {
  82     try {
  83       const payload: StartTransactionRequest = {
  84         connectorId,
  85         ...!Utils.isUndefined(idTag) ? { idTag } : { idTag: Constants.TRANSACTION_DEFAULT_IDTAG },
  86         meterStart: this.chargingStation.getEnergyActiveImportRegisterByConnectorId(connectorId),
  87         timestamp: new Date().toISOString(),
  88       };
  89       return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.START_TRANSACTION) as OCPP16StartTransactionResponse;
  90     } catch (error) {
  91       this.handleRequestError(OCPP16RequestCommand.START_TRANSACTION, error);
  92     }
  93   }
  94
  95   public async sendStopTransaction(transactionId: number, meterStop: number, idTag?: string,
  96       reason: OCPP16StopTransactionReason = OCPP16StopTransactionReason.NONE): Promise<OCPP16StopTransactionResponse> {
  97     try {
  98       let connectorId: number;
  99       for (const connector in this.chargingStation.connectors) {
 100         if (Utils.convertToInt(connector) > 0 && this.chargingStation.getConnector(Utils.convertToInt(connector))?.transactionId === transactionId) {
 101           connectorId = Utils.convertToInt(connector);
 102           break;
 103         }
 104       }
 105       const transactionEndMeterValue = OCPP16ServiceUtils.buildTransactionEndMeterValue(this.chargingStation, connectorId, meterStop);
 106       // FIXME: should be a callback, each OCPP commands implementation must do only one job
 107       (this.chargingStation.getBeginEndMeterValues() && !this.chargingStation.getOutOfOrderEndMeterValues())
 108         && await this.sendTransactionEndMeterValues(connectorId, transactionId, transactionEndMeterValue);
 109       const payload: StopTransactionRequest = {
 110         transactionId,
 111         ...!Utils.isUndefined(idTag) && { idTag },
 112         meterStop,
 113         timestamp: new Date().toISOString(),
 114         ...reason && { reason },
 115         ...this.chargingStation.getTransactionDataMeterValues() && { transactionData: OCPP16ServiceUtils.buildTransactionDataMeterValues(this.chargingStation.getConnector(connectorId).transactionBeginMeterValue, transactionEndMeterValue) },
 116       };
 117       return await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.STOP_TRANSACTION) as OCPP16StartTransactionResponse;
 118     } catch (error) {
 119       this.handleRequestError(OCPP16RequestCommand.STOP_TRANSACTION, error);
 120     }
 121   }
 122
 123   // eslint-disable-next-line consistent-this
 124   public async sendMeterValues(connectorId: number, transactionId: number, interval: number, debug = false): Promise<void> {
 125     try {
 126       const meterValue: OCPP16MeterValue = {
 127         timestamp: new Date().toISOString(),
 128         sampledValue: [],
 129       };
 130       const connector = this.chargingStation.getConnector(connectorId);
 131       // SoC measurand
 132       const socSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.STATE_OF_CHARGE);
 133       if (socSampledValueTemplate) {
 134         const socSampledValueTemplateValue = socSampledValueTemplate.value
 135           ? Utils.getRandomFloatFluctuatedRounded(parseInt(socSampledValueTemplate.value), socSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 136           : Utils.getRandomInt(100);
 137         meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(socSampledValueTemplate, socSampledValueTemplateValue));
 138         const sampledValuesIndex = meterValue.sampledValue.length - 1;
 139         if (Utils.convertToInt(meterValue.sampledValue[sampledValuesIndex].value) > 100 || debug) {
 140           logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/100`);
 141         }
 142       }
 143       // Voltage measurand
 144       const voltageSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.VOLTAGE);
 145       if (voltageSampledValueTemplate) {
 146         const voltageSampledValueTemplateValue = voltageSampledValueTemplate.value ? parseInt(voltageSampledValueTemplate.value) : this.chargingStation.getVoltageOut();
 147         const fluctuationPercent = voltageSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT;
 148         const voltageMeasurandValue = Utils.getRandomFloatFluctuatedRounded(voltageSampledValueTemplateValue, fluctuationPercent);
 149         if (this.chargingStation.getNumberOfPhases() !== 3 || (this.chargingStation.getNumberOfPhases() === 3 && this.chargingStation.getMainVoltageMeterValues())) {
 150           meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(voltageSampledValueTemplate, voltageMeasurandValue));
 151         }
 152         for (let phase = 1; this.chargingStation.getNumberOfPhases() === 3 && phase <= this.chargingStation.getNumberOfPhases(); phase++) {
 153           const phaseLineToNeutralValue = `L${phase}-N`;
 154           const voltagePhaseLineToNeutralSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.VOLTAGE,
 155             phaseLineToNeutralValue as OCPP16MeterValuePhase);
 156           let voltagePhaseLineToNeutralMeasurandValue: number;
 157           if (voltagePhaseLineToNeutralSampledValueTemplate) {
 158             const voltagePhaseLineToNeutralSampledValueTemplateValue = voltagePhaseLineToNeutralSampledValueTemplate.value ? parseInt(voltagePhaseLineToNeutralSampledValueTemplate.value) : this.chargingStation.getVoltageOut();
 159             const fluctuationPhaseToNeutralPercent = voltagePhaseLineToNeutralSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT;
 160             voltagePhaseLineToNeutralMeasurandValue = Utils.getRandomFloatFluctuatedRounded(voltagePhaseLineToNeutralSampledValueTemplateValue, fluctuationPhaseToNeutralPercent);
 161           }
 162           meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(voltagePhaseLineToNeutralSampledValueTemplate ?? voltageSampledValueTemplate,
 163             voltagePhaseLineToNeutralMeasurandValue ?? voltageMeasurandValue, null, phaseLineToNeutralValue as OCPP16MeterValuePhase));
 164           if (this.chargingStation.getPhaseLineToLineVoltageMeterValues()) {
 165             const phaseLineToLineValue = `L${phase}-L${(phase + 1) % this.chargingStation.getNumberOfPhases() !== 0 ? (phase + 1) % this.chargingStation.getNumberOfPhases() : this.chargingStation.getNumberOfPhases()}`;
 166             const voltagePhaseLineToLineSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.VOLTAGE, phaseLineToLineValue as OCPP16MeterValuePhase);
 167             let voltagePhaseLineToLineMeasurandValue: number;
 168             if (voltagePhaseLineToLineSampledValueTemplate) {
 169               const voltagePhaseLineToLineSampledValueTemplateValue = voltagePhaseLineToLineSampledValueTemplate.value ? parseInt(voltagePhaseLineToLineSampledValueTemplate.value) : Voltage.VOLTAGE_400;
 170               const fluctuationPhaseLineToLinePercent = voltagePhaseLineToLineSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT;
 171               voltagePhaseLineToLineMeasurandValue = Utils.getRandomFloatFluctuatedRounded(voltagePhaseLineToLineSampledValueTemplateValue, fluctuationPhaseLineToLinePercent);
 172             }
 173             const defaultVoltagePhaseLineToLineMeasurandValue = Utils.getRandomFloatFluctuatedRounded(Voltage.VOLTAGE_400, fluctuationPercent);
 174             meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(voltagePhaseLineToLineSampledValueTemplate ?? voltageSampledValueTemplate,
 175               voltagePhaseLineToLineMeasurandValue ?? defaultVoltagePhaseLineToLineMeasurandValue, null, phaseLineToLineValue as OCPP16MeterValuePhase));
 176           }
 177         }
 178       }
 179       // Power.Active.Import measurand
 180       const powerSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT);
 181       let powerPerPhaseSampledValueTemplates: MeasurandPerPhaseSampledValueTemplates = {};
 182       if (this.chargingStation.getNumberOfPhases() === 3) {
 183         powerPerPhaseSampledValueTemplates = {
 184           L1: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT, OCPP16MeterValuePhase.L1_N),
 185           L2: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT, OCPP16MeterValuePhase.L2_N),
 186           L3: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.POWER_ACTIVE_IMPORT, OCPP16MeterValuePhase.L3_N),
 187         };
 188       }
 189       if (powerSampledValueTemplate) {
 190         OCPP16ServiceUtils.checkMeasurandPowerDivider(this.chargingStation, powerSampledValueTemplate.measurand);
 191         const errMsg = `${this.chargingStation.logPrefix()} MeterValues measurand ${powerSampledValueTemplate.measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${this.chargingStation.getCurrentOutType()} currentOutType in template file ${this.chargingStation.stationTemplateFile}, cannot calculate ${powerSampledValueTemplate.measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
 192         const powerMeasurandValues = {} as MeasurandValues;
 193         const unitDivider = powerSampledValueTemplate?.unit === MeterValueUnit.KILO_WATT ? 1000 : 1;
 194         const maxPower = Math.round(this.chargingStation.stationInfo.maxPower / this.chargingStation.stationInfo.powerDivider);
 195         const maxPowerPerPhase = Math.round((this.chargingStation.stationInfo.maxPower / this.chargingStation.stationInfo.powerDivider) / this.chargingStation.getNumberOfPhases());
 196         switch (this.chargingStation.getCurrentOutType()) {
 197           case CurrentType.AC:
 198             if (this.chargingStation.getNumberOfPhases() === 3) {
 199               const defaultFluctuatedPowerPerPhase = powerSampledValueTemplate.value
 200                 && Utils.getRandomFloatFluctuatedRounded(parseInt(powerSampledValueTemplate.value) / this.chargingStation.getNumberOfPhases(), powerSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 201               const phase1FluctuatedValue = powerPerPhaseSampledValueTemplates?.L1?.value
 202                 && Utils.getRandomFloatFluctuatedRounded(parseInt(powerPerPhaseSampledValueTemplates.L1.value), powerPerPhaseSampledValueTemplates.L1.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 203               const phase2FluctuatedValue = powerPerPhaseSampledValueTemplates?.L2?.value
 204                 && Utils.getRandomFloatFluctuatedRounded(parseInt(powerPerPhaseSampledValueTemplates.L2.value), powerPerPhaseSampledValueTemplates.L2.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 205               const phase3FluctuatedValue = powerPerPhaseSampledValueTemplates?.L3?.value
 206                 && Utils.getRandomFloatFluctuatedRounded(parseInt(powerPerPhaseSampledValueTemplates.L3.value), powerPerPhaseSampledValueTemplates.L3.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 207               powerMeasurandValues.L1 = (phase1FluctuatedValue ?? defaultFluctuatedPowerPerPhase) ?? Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
 208               powerMeasurandValues.L2 = (phase2FluctuatedValue ?? defaultFluctuatedPowerPerPhase) ?? Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
 209               powerMeasurandValues.L3 = (phase3FluctuatedValue ?? defaultFluctuatedPowerPerPhase) ?? Utils.getRandomFloatRounded(maxPowerPerPhase / unitDivider);
 210             } else {
 211               powerMeasurandValues.L1 = powerSampledValueTemplate.value
 212                 ? Utils.getRandomFloatFluctuatedRounded(parseInt(powerSampledValueTemplate.value), powerSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 213                 : Utils.getRandomFloatRounded(maxPower / unitDivider);
 214               powerMeasurandValues.L2 = 0;
 215               powerMeasurandValues.L3 = 0;
 216             }
 217             powerMeasurandValues.allPhases = Utils.roundTo(powerMeasurandValues.L1 + powerMeasurandValues.L2 + powerMeasurandValues.L3, 2);
 218             break;
 219           case CurrentType.DC:
 220             powerMeasurandValues.allPhases = powerSampledValueTemplate.value
 221               ? Utils.getRandomFloatFluctuatedRounded(parseInt(powerSampledValueTemplate.value), powerSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 222               : Utils.getRandomFloatRounded(maxPower / unitDivider);
 223             break;
 224           default:
 225             logger.error(errMsg);
 226             throw new OCPPError(ErrorType.INTERNAL_ERROR, errMsg, RequestCommand.METER_VALUES);
 227         }
 228         meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(powerSampledValueTemplate, powerMeasurandValues.allPhases));
 229         const sampledValuesIndex = meterValue.sampledValue.length - 1;
 230         const maxPowerRounded = Utils.roundTo(maxPower / unitDivider, 2);
 231         if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxPowerRounded || debug) {
 232           logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxPowerRounded}`);
 233         }
 234         for (let phase = 1; this.chargingStation.getNumberOfPhases() === 3 && phase <= this.chargingStation.getNumberOfPhases(); phase++) {
 235           const phaseValue = `L${phase}-N`;
 236           meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(powerPerPhaseSampledValueTemplates[`L${phase}`] ?? powerSampledValueTemplate, powerMeasurandValues[`L${phase}`], null,
 237             phaseValue as OCPP16MeterValuePhase));
 238           const sampledValuesPerPhaseIndex = meterValue.sampledValue.length - 1;
 239           const maxPowerPerPhaseRounded = Utils.roundTo(maxPowerPerPhase / unitDivider, 2);
 240           if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesPerPhaseIndex].value) > maxPowerPerPhaseRounded || debug) {
 241             logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesPerPhaseIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: phase ${meterValue.sampledValue[sampledValuesPerPhaseIndex].phase}, connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesPerPhaseIndex].value}/${maxPowerPerPhaseRounded}`);
 242           }
 243         }
 244       }
 245       // Current.Import measurand
 246       const currentSampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.CURRENT_IMPORT);
 247       let currentPerPhaseSampledValueTemplates: MeasurandPerPhaseSampledValueTemplates = {};
 248       if (this.chargingStation.getNumberOfPhases() === 3) {
 249         currentPerPhaseSampledValueTemplates = {
 250           L1: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.CURRENT_IMPORT, OCPP16MeterValuePhase.L1),
 251           L2: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.CURRENT_IMPORT, OCPP16MeterValuePhase.L2),
 252           L3: this.chargingStation.getSampledValueTemplate(connectorId, OCPP16MeterValueMeasurand.CURRENT_IMPORT, OCPP16MeterValuePhase.L3),
 253         };
 254       }
 255       if (currentSampledValueTemplate) {
 256         OCPP16ServiceUtils.checkMeasurandPowerDivider(this.chargingStation, currentSampledValueTemplate.measurand);
 257         const errMsg = `${this.chargingStation.logPrefix()} MeterValues measurand ${currentSampledValueTemplate.measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: Unknown ${this.chargingStation.getCurrentOutType()} currentOutType in template file ${this.chargingStation.stationTemplateFile}, cannot calculate ${currentSampledValueTemplate.measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER} measurand value`;
 258         const currentMeasurandValues: MeasurandValues = {} as MeasurandValues;
 259         let maxAmperage: number;
 260         switch (this.chargingStation.getCurrentOutType()) {
 261           case CurrentType.AC:
 262             maxAmperage = ACElectricUtils.amperagePerPhaseFromPower(this.chargingStation.getNumberOfPhases(), this.chargingStation.stationInfo.maxPower / this.chargingStation.stationInfo.powerDivider, this.chargingStation.getVoltageOut());
 263             if (this.chargingStation.getNumberOfPhases() === 3) {
 264               const defaultFluctuatedAmperagePerPhase = currentSampledValueTemplate.value
 265                 && Utils.getRandomFloatFluctuatedRounded(parseInt(currentSampledValueTemplate.value), currentSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 266               const phase1FluctuatedValue = currentPerPhaseSampledValueTemplates?.L1?.value
 267                 && Utils.getRandomFloatFluctuatedRounded(parseInt(currentPerPhaseSampledValueTemplates.L1.value), currentPerPhaseSampledValueTemplates.L1.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 268               const phase2FluctuatedValue = currentPerPhaseSampledValueTemplates?.L2?.value
 269                 && Utils.getRandomFloatFluctuatedRounded(parseInt(currentPerPhaseSampledValueTemplates.L2.value), currentPerPhaseSampledValueTemplates.L2.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 270               const phase3FluctuatedValue = currentPerPhaseSampledValueTemplates?.L3?.value
 271                 && Utils.getRandomFloatFluctuatedRounded(parseInt(currentPerPhaseSampledValueTemplates.L3.value), currentPerPhaseSampledValueTemplates.L3.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT);
 272               currentMeasurandValues.L1 = (phase1FluctuatedValue ?? defaultFluctuatedAmperagePerPhase) ?? Utils.getRandomFloatRounded(maxAmperage);
 273               currentMeasurandValues.L2 = (phase2FluctuatedValue ?? defaultFluctuatedAmperagePerPhase) ?? Utils.getRandomFloatRounded(maxAmperage);
 274               currentMeasurandValues.L3 = (phase3FluctuatedValue ?? defaultFluctuatedAmperagePerPhase) ?? Utils.getRandomFloatRounded(maxAmperage);
 275             } else {
 276               currentMeasurandValues.L1 = currentSampledValueTemplate.value
 277                 ? Utils.getRandomFloatFluctuatedRounded(parseInt(currentSampledValueTemplate.value), currentSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 278                 : Utils.getRandomFloatRounded(maxAmperage);
 279               currentMeasurandValues.L2 = 0;
 280               currentMeasurandValues.L3 = 0;
 281             }
 282             currentMeasurandValues.allPhases = Utils.roundTo((currentMeasurandValues.L1 + currentMeasurandValues.L2 + currentMeasurandValues.L3) / this.chargingStation.getNumberOfPhases(), 2);
 283             break;
 284           case CurrentType.DC:
 285             maxAmperage = DCElectricUtils.amperage(this.chargingStation.stationInfo.maxPower / this.chargingStation.stationInfo.powerDivider, this.chargingStation.getVoltageOut());
 286             currentMeasurandValues.allPhases = currentSampledValueTemplate.value
 287               ? Utils.getRandomFloatFluctuatedRounded(parseInt(currentSampledValueTemplate.value), currentSampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 288               : Utils.getRandomFloatRounded(maxAmperage);
 289             break;
 290           default:
 291             logger.error(errMsg);
 292             throw new OCPPError(ErrorType.INTERNAL_ERROR, errMsg, RequestCommand.METER_VALUES);
 293         }
 294         meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(currentSampledValueTemplate, currentMeasurandValues.allPhases));
 295         const sampledValuesIndex = meterValue.sampledValue.length - 1;
 296         if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxAmperage || debug) {
 297           logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxAmperage}`);
 298         }
 299         for (let phase = 1; this.chargingStation.getNumberOfPhases() === 3 && phase <= this.chargingStation.getNumberOfPhases(); phase++) {
 300           const phaseValue = `L${phase}`;
 301           meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(currentPerPhaseSampledValueTemplates[phaseValue] ?? currentSampledValueTemplate,
 302             currentMeasurandValues[phaseValue], null, phaseValue as OCPP16MeterValuePhase));
 303           const sampledValuesPerPhaseIndex = meterValue.sampledValue.length - 1;
 304           if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesPerPhaseIndex].value) > maxAmperage || debug) {
 305             logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesPerPhaseIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: phase ${meterValue.sampledValue[sampledValuesPerPhaseIndex].phase}, connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesPerPhaseIndex].value}/${maxAmperage}`);
 306           }
 307         }
 308       }
 309       // Energy.Active.Import.Register measurand (default)
 310       const energySampledValueTemplate = this.chargingStation.getSampledValueTemplate(connectorId);
 311       if (energySampledValueTemplate) {
 312         OCPP16ServiceUtils.checkMeasurandPowerDivider(this.chargingStation, energySampledValueTemplate.measurand);
 313         const unitDivider = energySampledValueTemplate?.unit === MeterValueUnit.KILO_WATT_HOUR ? 1000 : 1;
 314         const energyMeasurandValue = energySampledValueTemplate.value
 315           // Cumulate the fluctuated value around the static one
 316           ? Utils.getRandomFloatFluctuatedRounded(parseInt(energySampledValueTemplate.value), energySampledValueTemplate.fluctuationPercent ?? Constants.DEFAULT_FLUCTUATION_PERCENT)
 317           : Utils.getRandomInt(this.chargingStation.stationInfo.maxPower / (this.chargingStation.stationInfo.powerDivider * 3600000) * interval);
 318         // Persist previous value on connector
 319         if (connector && !Utils.isNullOrUndefined(connector.energyActiveImportRegisterValue) && connector.energyActiveImportRegisterValue >= 0 &&
 320             !Utils.isNullOrUndefined(connector.transactionEnergyActiveImportRegisterValue) && connector.transactionEnergyActiveImportRegisterValue >= 0) {
 321           connector.energyActiveImportRegisterValue += energyMeasurandValue;
 322           connector.transactionEnergyActiveImportRegisterValue += energyMeasurandValue;
 323         } else {
 324           connector.energyActiveImportRegisterValue = 0;
 325           connector.transactionEnergyActiveImportRegisterValue = 0;
 326         }
 327         meterValue.sampledValue.push(OCPP16ServiceUtils.buildSampledValue(energySampledValueTemplate,
 328           Utils.roundTo(this.chargingStation.getEnergyActiveImportRegisterByTransactionId(transactionId) / unitDivider, 4)));
 329         const sampledValuesIndex = meterValue.sampledValue.length - 1;
 330         const maxEnergy = Math.round(this.chargingStation.stationInfo.maxPower * 3600 / (this.chargingStation.stationInfo.powerDivider * interval));
 331         const maxEnergyRounded = Utils.roundTo(maxEnergy / unitDivider, 4);
 332         if (Utils.convertToFloat(meterValue.sampledValue[sampledValuesIndex].value) > maxEnergyRounded || debug) {
 333           logger.error(`${this.chargingStation.logPrefix()} MeterValues measurand ${meterValue.sampledValue[sampledValuesIndex].measurand ?? OCPP16MeterValueMeasurand.ENERGY_ACTIVE_IMPORT_REGISTER}: connectorId ${connectorId}, transaction ${connector.transactionId}, value: ${meterValue.sampledValue[sampledValuesIndex].value}/${maxEnergyRounded}`);
 334         }
 335       }
 336       const payload: MeterValuesRequest = {
 337         connectorId,
 338         transactionId,
 339         meterValue: [meterValue],
 340       };
 341       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.METER_VALUES);
 342     } catch (error) {
 343       this.handleRequestError(OCPP16RequestCommand.METER_VALUES, error);
 344     }
 345   }
 346
 347   public async sendTransactionBeginMeterValues(connectorId: number, transactionId: number, beginMeterValue: OCPP16MeterValue): Promise<void> {
 348     try {
 349       const payload: MeterValuesRequest = {
 350         connectorId,
 351         transactionId,
 352         meterValue: [beginMeterValue],
 353       };
 354       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.METER_VALUES);
 355     } catch (error) {
 356       this.handleRequestError(OCPP16RequestCommand.METER_VALUES, error);
 357     }
 358   }
 359
 360   public async sendTransactionEndMeterValues(connectorId: number, transactionId: number, endMeterValue: OCPP16MeterValue): Promise<void> {
 361     try {
 362       const payload: MeterValuesRequest = {
 363         connectorId,
 364         transactionId,
 365         meterValue: [endMeterValue],
 366       };
 367       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.METER_VALUES);
 368     } catch (error) {
 369       this.handleRequestError(OCPP16RequestCommand.METER_VALUES, error);
 370     }
 371   }
 372
 373   public async sendDiagnosticsStatusNotification(diagnosticsStatus: OCPP16DiagnosticsStatus): Promise<void> {
 374     try {
 375       const payload: DiagnosticsStatusNotificationRequest = {
 376         status: diagnosticsStatus
 377       };
 378       await this.sendMessage(Utils.generateUUID(), payload, MessageType.CALL_MESSAGE, OCPP16RequestCommand.DIAGNOSTICS_STATUS_NOTIFICATION);
 379     } catch (error) {
 380       this.handleRequestError(OCPP16RequestCommand.METER_VALUES, error);
 381     }
 382   }
 383
 384   public async sendError(messageId: string, error: OCPPError, commandName: OCPP16RequestCommand | OCPP16IncomingRequestCommand): Promise<unknown> {
 385     try {
 386       // Send error
 387       return await this.sendMessage(messageId, error, MessageType.CALL_ERROR_MESSAGE, commandName);
 388     } catch (err) {
 389       this.handleRequestError(commandName as OCPP16RequestCommand, err);
 390     }
 391   }
 392 }