def METHOD_NAME(self):
    if self.ilbit == '1':
        raise RuntimeError('Interlock failure - this should reset automatically')
    il, = self._query('GLF') # Get Latched Failure. 
    self.ilbit = format(int(il,16), '#018b')[-10] #convert the response to 16-bit binary and take the interlock bit
    #print '647 laser interlock bit:' + self.ilbit
    if self.ilbit == '1':
        raise RuntimeError('Interlock failure - this should reset automatically')