code: def status(self, record=None):
          
          if record is not None:
              self.last_status = {'Source': ustr(record['Source']),
                                  'StatusType': ustr(record['StatusType']),
                                  'StatusCode': record['StatusCode'],
                                  'StatusMessage': ustr(record['StatusMessage']),
                                  'Request': ustr(record['Instrument'])}
          return self.last_status
docs: Extract status from the retrieved data and save it as a property of an object.
             If record with data is not specified then the status of previous operation is
             returned.
  
             status - dictionary with data source, string with request and status type,
                      code and message.
  
             status['StatusType']: 'Connected' - the data is fine
                                   'Stale'     - the source is unavailable. It may be
                                                 worthwhile to try again later
                                   'Failure'   - data could not be obtained (e.g. the
                                                 instrument is incorrect)
                                   'Pending'   - for internal use only
             status['StatusCode']: 0 - 'No Error'
                                   1 - 'Disconnected'
                                   2 - 'Source Fault'
                                   3 - 'Network Fault'
                                   4 - 'Access Denied' (user does not have permissions)
                                   5 - 'No Such Item' (no instrument with given name)
                                   11 - 'Blocking Timeout'
                                   12 - 'Internal'