3.27 Unlock Connector

The UnlockConnector message in OCPP 1.6J is sent by the central system to remotely unlock a specific connector, allowing the user to safely disconnect the charging cable. It specifies the connector ID of the connector to be unlocked. The charge point responds to confirm whether the unlock operation was successful. This feature is essential for user convenience and safety after a charging session.

Example:

            if(connectorDetails.connectorStatus == GOOD_CONNECTION)
            {
                char ChargePointStatus[CHARGE_POINT_STATUS_SIZE];
                static char IdTag[CISTRING_20TYPE_LENGTH]={NULL_VALUE};
                SetUnlockConnectorStatus(UNLOCK_CONNECTOR_UNLOCKED);
                (void)SendUnlockConnectorResponse();
                GetAuthorizeIdTag(IdTag);
                GetChargePointStatus(ChargePointStatus);
                LogDebug("APP_LOG", " charge point status:%s\n\r",ChargePointStatus);
                if((strncmp(ChargePointStatus, "Charging", strlen(ChargePointStatus)) == 0) )
                {
                    int  transactionId;
                    LogDebug("APP_LOG", " UnlockConnector: Stop charging\n\r");
                    transactionId = GetStartTransactionResponseTransactionId();
                    UpdateAndSendStopTransaction(IdTag, OCPP_METER_READING, transactionId, UNLOCKCOMMAND, OCPP_KWH);
                }
            }
            else
            {
              LogDebug("APP_LOG", " UnlockConnector: Bad connector connection\n\r");
              SetUnlockConnectorStatus(UNLOCK_CONNECTOR_UNLOCKFAILED);
              SendUnlockConnectorResponse();
            }

Example:

void OCPPMessagesInit(void)
{
    DataTransferInit();
    ResetInit();
    MeterValueStructInit();
    SetLocalListVersionNumber(DEFAULT_SEND_LOCAL_LIST_VERSION);   
    SetChargePointConnectorId(CHARGEPOINT_DEFAULT_CONTROLLER);
    SetChargePointError(NOERROR);
    SetChargePointStatus(AVAILABLE);
    SetAuthorizeStatus(AUTHORIZE_INVALID);
    SetRemoteStartTransactionStatus(REMOTE_START_STOP_REJECTED);
    SetOCPPWebsocketOnlineMode();
    UnlockConnectorInit();
    ReserveNowInit();
    ChangeAvailabilityInit();
    ClearCacheInit();
    ChangeConfigurationInit();
    CancelReservationInit();
    GetAllIDsFromDB();
    CheckAndStartClockAlignedMeterValueTimer();
}

Example:

void UnlockConnector(uint16_t responsecode)
{
    (void)responsecode;
    uint8_t connectorId;
    CONNECTOR_DETAILS connectorDetails;
    
    GetUnlockConnectorParms(&connectorId);
    LogDebug("APP_LOG", " UnlockConnector requested connectorId:%d\n\r",connectorId);