def Start_scan(self):
        self.StatusMonitor(True, 'stas_scan')
        threadscan_check = self.configure.xmlSettings('advanced',
                                                      'Function_scan', None,
                                                      False)
        self.tables.clear()
        self.data = {'IPaddress': [], 'Hostname': [], 'MacAddress': []}
        if threadscan_check == 'Nmap':
            try:
                from nmap import PortScanner
            except ImportError:
                QMessageBox.information(
                    self, 'Error Nmap',
                    'The modules python-nmap not installed')
                return
            if self.txt_gateway.text() != '':
                self.movie_screen.setDisabled(True)
                self.tables.setVisible(False)
                config_gateway = str(self.txt_gateway.text())
                scan = ''
                config_gateway = config_gateway.split('.')
                del config_gateway[-1]
                for i in config_gateway:
                    scan += str(i) + '.'
                self.ThreadScanner = ThreadScan(scan + '0/24')
                self.connect(self.ThreadScanner,
                             SIGNAL('Activated ( QString ) '),
                             self.thread_scan_reveice)
                self.StatusMonitor(True, 'stas_scan')
                self.ThreadScanner.start()
            else:
                QMessageBox.information(self, 'Error in gateway',
                                        'gateway not found.')

        elif threadscan_check == 'Ping':
            if self.txt_gateway.text() != '':
                config = str(self.txt_gateway.text())
                t = threading.Thread(target=self.scanner_network,
                                     args=(config, ))
                t.daemon = True
                t.start(), t.join()
                self.StatusMonitor(False, 'stas_scan')
            else:
                QMessageBox.information(self, 'Error in gateway',
                                        'gateway not found.')
        else:
            QMessageBox.information(self, 'Error on select thread Scan',
                                    'thread scan not selected.')